Bell and Gossett 70E Guide

INSTALLER: PLEASE LEAVE THIS MANUAL FOR THE OWNER’S USE.
SAFETY
INSTRUCTION
This safety alert symbol will be used in this manual and on the
70E/70M Safety Instruction decal to draw attention to safety
related instructions. When used, the safety alert symbol means
ATTENTION! BECOME ALERT! YOUR SAFETY IS
INVOLVED! FAILURE TO FOLLOW THESE INSTRUCTIONS
MAY RESULT IN A SAFETY HAZARD!
INSTRUCTION MANUAL
S12228
REVISION A
Installation, Operation, & Maintenance Instructions
70E/70M Multiple Pump & Control
Pressure Booster Systems
70E
DESCRIPTION
Microprocessor controlled frame mounted multiple pump
pressure boosting system with combination pressure reducing
and non-slam check valves for maintaining system pressure.
The motors are controlled by a control panel with micro-
processor, starters, overload protection, virtual H-O-A switches,
optional short circuit protection, and control transformer.
The microprocessor control consists of an operator interface
with 2 line backlit display and membrane key pad, input/
output board with 24V power supply, and microcontrolled
kW transducer.
BELL & GOSSETT®
OPERATIONAL LIMITS
See unit nameplate for pump capacity, boost, full load current
draw, and operating voltage. The pump discharge pressure
must not exceed 125 PSI unless special piping modifications
are made.
Bell & Gossett®

2
70E/70M Pressure Booster
INSTRUCTIONS
UNIT IDENTIFICATION
The unit nameplate gives identification and rating information as identified in Figure 1.
Permanent records for this unit are kept by the factory number and it must therefore be
used with all correspondence and spare parts orders.
Model No.
Factory No.
Wired for Volts Hz Ph
System FL Amps
Largest Motor HP
System Flow GPM
Suction Pressure PSIG
Discharge Pressure PSIG
Pump TDH Feet
FIGURE 1 - 70E/70M NAMEPLATE

3
Preface
The following manual describes the 70E/70M Pressure Boosters with emphasis on the new micropro-
cessor based Technologic Controller. This unit is in the tradition of the other members of the Technologic
Control Panels as it incorporates many original, novel, and proprietary features that may only be found on
B&G controllers. Some of these features require special emphasis here.
The controller is best described as a specific purpose programmable pump controller. This means that
the hardware and software have been created for the control and diagnostics of pumps with considera-
tion for their inherent characteristics. This results in an optimum pump controller without the cost of gen-
eral purpose control hardware. Software is dedicated and established for the unit only after extensive
testing. Changes to this software are not taken lightly and must pass rigid version control.
The controller has the unique patented analog input protection of other members of the control family.
Upon inadvertent higher than normal input voltage the analog input resistor is sacrificed. An on-board
spare is used to replace the plug-in resistor. Extreme hi-voltage is protected against by additional
components.
Unique to this new controller are virtual selector switches. Microprocessor control coupled with discrete
logic allows the pump keys to act as 3 position selector switches. The 3 positions are hand-off-auto.
Virtual selector switches surpass standard selector switches in that they can be changed from auto to
hand automatically upon a fault in order to maintain a process. It is novel that just as a standard selector
switch can change position (by human hand) with power off, so can the virtual selector switch similarly
change position.
Combined with the virtual selector switches is redundant control with discrete logic which is activated
upon a microprocessor fault. This is explained in detail in Section 5.4.
In addition to this unique hardware the controller has provision for three 4-20mA analog signals and two
RTD temperature inputs. Bell & Gossett is able to offer suction, system, and temperature inputs as stan-
dard. The third 4-20mA is used for an optional flow transmitter.
Bell & Gossett is thereby able to offer staging of pumps by any one of 4 methods, i.e.: watts, amps, PSI
and GPM (flow). The main changes occur in the menu entries.
Staging by watts is standard. A power transducer of Bell & Gossett design is included. This transducer is
factory calibrated, single conductor sensing, wide current and voltage range, and automatic adaptability
to Wye or Delta systems either grounded or ungrounded. At the customer’s discretion it may be used for
amp staging with the watt feature used to display total system power.

4
TABLE OF CONTENTS
SECTION 1 –GENERAL
Purpose of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Safety Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Additional Safety Requirement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Temperature and Ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Ground Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Power Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Field Connection Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
SECTION 2 –INSTALLATION
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Leveling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Unit Support and Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Wiring
Power Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Analog Signal Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Pressure Transmitter Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Temperature Sensor Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Flow Sensor/Transmitter Wiring and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Differential Pressure Switch Piping and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Remote Start/Stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Remote Alarm Indication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Pump On/Off Remote Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
SECTION 3 –START UP
Putting Unit into Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
SECTION 4 –SETUP AND FEATURES
Power-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Setup and System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Key Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Normal Operating Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
SECTION 5 –OPERATION
Power Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Auto Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Manual Operation (CPU OK) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Manual Operation (CPU Fails) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5
SECTION 6 –MAINTENANCE
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Technical Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Digital Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Analog Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
CPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Diagnostics (Service Test) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Read Only –Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Read Only –Analog Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Manual Control –Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Digital Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Pre-Determined Fault and Fault Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Fault Isolation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Instruments and Their Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Field Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Serial No. and Firmware Version No. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Maintenance (Physical) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
APPENDIX A
System Piping and Unit Installation –Final Check List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
APPENDIX B
Electrical Wiring and Control Settings –Final Check List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
APPENDIX C
Procedure for Field Balancing 70E/70M PRV’s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
APPENDIX D
Troubleshooting Combination Pressure Reducing and Check Valves . . . . . . . . . . . . . . . . . . . . . . . . . 24
PRV Repair Kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
APPENDIX E
Service Test Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
APPENDIX F
Power Transducer Board (PTB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
NOTE:
The information contained in this manual is intended to assist operating personnel by providing information
on the characteristics of the purchased equipment.
It does not relieve the user of the responsibility to adhere to local codes and ordinances and the use of
accepted practices in the installation, operation and maintenance of this equipment.
Further information pertaining to the installation, operation, and maintenance of your 70E/70M Pressure
Boosting System can be found in the I.O.M.s for the associated equipment provided:
A. ITT Bell & Gossett 1510 (IOM Part #P81673)
B. ITT Bell & Gossett 1531 (IOM Part #P81567)
C. Pressure Reducing Valve –CLA-VAL Co. Manual #TM90-01
D. Flow Sensor/Transmitter Manufacturers IOM

1.1 PURPOSE OF MANUAL
1.1.1 This manual is furnished to acquaint you with some
of the practical ways to install, operate, and maintain
this unit. Read it carefully before doing any work on
your unit and keep it handy for future reference.
1.1.2 Equipment cannot operate well without proper care.
To keep this unit at top efficiency, follow the recom-
mended installation and servicing procedures out-
lined in this manual.
1.1.3 SAFETY INSTRUCTION
This safety alert symbol will be used in this manual
and on the unit safety instruction to draw attention to
safety related instructions. When used the safety alert
symbol means ATTENTION BECOME ALERT!
YOUR SAFETY IS INVOLVED! FAILURE TO FOL-
LOW THIS INSTRUCTION MAY RESULT IN A
SAFETY HAZARD.
1.1.4 Your Technologic 70E/70M Series Pump Controller
should have a safety instruction decal (Part #S11550).
If the decal is missing or illegible contact your local
B&G representative for a replacement.
1.2 ADDITIONAL SAFETY REQUIREMENTS
1.2.1 Motor must have a properly sized starter with properly
sized overload block to provide overload and under-
voltage protection. Ground fault protection should be
sized properly.
1.2.2 Refer to the motor manufacturer’s I.O.M. for specific
installation information.
1.2.3 Even when the motor is stopped, it should be consid-
ered “alive”as long as its controller is energized.
Keep hands away from the output shaft until the
motor has completely stopped and power is discon-
nected from the pump controller.
1.2.4 Motor control equipment and electronic controls are
connected to hazardous line voltages. When servic-
ing electronic controls, there will be exposed compo-
nents at or above line potential. Extreme care should
be taken to protect against shock. Stand on an insu-
lating pad and make it a habit to use only one hand
when checking components. Always use accurate
test meters when checking electrical components.
Always work with another person in case of an emer-
gency. Disconnect power when performing mainte-
nance. Be sure equipment is properly grounded.
Wear safety glasses whenever working on electronic
control or rotating equipment.
1.3 STORAGE
For long periods of storage, the unit should be cov-
ered to prevent corrosion and contamination from
dirt. It should be STORED in a clean, dry location
between -20 and +75˚C. The relative humidity should
not exceed 85%. The unit should be checked period-
ically to ensure that no condensation has formed.
After storage, again check that it is dry before apply-
ing power.
1.4 HANDLING
1.4.1 Care should be taken to prevent damage due to
dropping or jolting when moving the unit. Inspect the
unit thoroughly for damage upon receipt.
Transportation damage should be brought to the car-
rier’s attention immediately. Ensure that sensing lines
are free of crimps and kinks.
1.4.2 The units should be unloaded and handled by quali-
fied personnel. The unit is top heavy due to the posi-
tion of the motors. Use the motor eyebolts to stabilize
the unit while lifting to prevent overturning. Do not
use the motor eyebolts to lift.
1.5 TEMPERATURE AND VENTILATION
All electrical equipment is susceptible to failure if
operated in ambient temperatures outside of its rat-
ing. The OPERATING temperature range for this unit
is 0 to 40˚C. The relative humidity should not exceed
95% non-condensing. The unit should not be oper-
ated outside these extremes.
1.6 GROUND CONNECTIONS
A grounding terminal is provided for a dedicated
ground wire connection. All provisions of the National
Electrical Code and local codes must be followed.
1.7 POWER WIRING
Power wire types and sizes must be selected based
upon conformance with the National Electrical Code
and all local codes and restrictions. In addition, only
copper (Cu) wire rated for 75˚C (minimum) may be
used for the power connections. Refer to the input
current as listed on the nameplate on the enclosure
door when sizing wire.
6
SECTION 1 –GENERAL
WARNING: Motor can start automatically. Keeps
hands away from output shaft until motor is com-
pletely stopped and input power is removed from the
motor control panel. Lockout main power switch while
working near the motor shaft. Failure to follow these
instructions could result in serious personal injury,
death, and/or property damage.
DANGER: Troubleshooting live control panels ex-
poses personnel to hazardous voltages. Electrical
troubleshooting must only be done by a qualified electri-
cian. Failure to follow these instructions could result in
serious personal injury, death, and/or property damage.
WARNING: Prevent electrical shocks. Disconnect
the power supply before beginning installation.
Failure to follow these instructions could result
in serious personal injury, death, and/or property
damage.
WARNING: Falling Objects Hazard. Eyebolts or lift-
ing lugs, if provided, are for lifting only the compo-
nents to which they are attached. Failure to follow these
instructions could result in serious personal injury,
death, and/or property damage.
WARNING: Conduit grounds are not adequate. A
separate ground wire must be attached to the
ground lug provided in the enclosure to avoid potential
safety hazards. Failure to follow these instructions
could result in serious personal injury, death, and/or
property damage.

2.0 LOCATION
2.1 Locate the pumping unit for ease of inspection, main-
tenance and service.
2.2 INSTALLATION
This unit is built to give you years of service; install it
properly and provide a suitable foundation. A base of
concrete weighing 21/2times the weight of the unit is
recommended. (Check the shipping ticket for the unit
weight.) Tie the concrete pad in with the finished
floor. Use foundation bolts and larger pipe sleeves to
give room for final bolt location.
2.3 LEVELING
Place the unit on its concrete foundation, supporting
it with steel wedges or shims totaling 1" in thickness.
These wedges or shims should be put on both sides
of each anchor-bolt to provide a means of leveling
the base.
2.4 UNIT SUPPORT AND LOCATION
The Bell & Gossett Series 70E/70M Pressure Booster
should be installed where there will be sufficient room
for future inspection and service. If the unit is to be
located near a noise sensitive area, consult a sound
specialist. Special precautions should be taken to
avoid sound and vibration transmission.
2.5 PIPING
2.5.1 Important. Do not install and operate ITT Bell &
Gossett 70E/70M Pressure Booster in a closed sys-
tem unless the system is constructed with properly
sized devices and control devices. Such devices
include the use of properly sized and located pres-
sure relief valves, compression tanks, pressure con-
trols, temperature controls and flow controls as
appropriate. If the system does not include these
devices, consult the responsible engineer or architect
before making pumps operational.
2.5.2 Make all necessay system piping connections. Be
aware that connecting dissimilar metals to the headers
can lead to corrosion damage due to galvanic corro-
sion. The rate of corrosion is dependant on various
factors some of which are: the potential between the
dissimilar metals, electrolyte conductivity, geometry
and areas of the metals. Dielectric connections are
recommended between dissimilar metals at the
header connection. Be sure to eliminate any pipe
strain on the unit. Support all pipes independently by
use of pipe hangers near the unit. DO NOT ATTEMPT
TO FORCE THE SUCTION OR DISCHARGE LINES
INTO POSITION. Refer to assembly drawing for cus-
tomer piping connections.
2.5.3 Eccentric increasers can be used in the suction lines
when increasing the pipe size, with straight sides of
increaser on top to eliminate air pockets.
2.5.4 As a rule, ordinary wire or band hangers are not ade-
quate to maintain alignment. It is very important to
provide a strong, rigid support for the suction line. A
saddle hanger is recommended.
2.5.5 For critical installations, equipment for absorbing
expansion and vibration should be installed in the
inlet and outlet connections of the unit.
2.5.6 After hydrotesting, drain plugs are removed, to facili-
tate system drainage, placed in a cloth bag and
secured to the unit. Drain plugs shall be reinstalled
prior to filling the system with fluid. Inspect all unit
piping connections. Joints may also become loose
during transit due to vibration and shock. All joints
are to be checked for tightness. Flanged joints should
be checked for proper torque of all flange bolts prior
to filling the system with fluid.
2.5.7 On an open system with a suction lift, use a foot
valve of equal or greater area than the pump suction
piping. Prevent clogging by using a strainer at the
suction inlet next to the foot valve. The strainer
should have an area three times that of the suction
pipe. Provisions must be made to prime the pump
suction piping on start up. Do not start the pump
unless all suction piping is full of water.
2.5.8 A thermal relief valve (B&G Part #S51260) is installed
on the discharge header to prevent potentially dan-
gerous thermal buildup in the package. This valve
acts as a safety device and it should never be re-
moved or tampered with. It is factory set to open and
discharge when the water temperature in the dis-
charge header exceeds 125˚F. The 3/8" NPT opening
of this valve must be piped to a floor drain.
2.6 LUBRICATION
Before starting, all pumps and motors should be
checked for proper lubrication.
7
SECTION 2 –INSTALLATION
DANGER: Heavy load, may drop if not lifted prop-
erly. Do not lift the entire unit by the motor eyebolts.
Lift the unit with slings placed under the unit base rails.
Failure to follow these instructions could result
in serious personal injury, death, and/or property
damage.
DANGER: The heating of water and other fluids
causes volumetric expansion. The associated forces
may cause failure of system components and releases of
high temperature fluids. This will by prevented by install-
ing properly sized and located pressure relief valves and
compression tanks. Failure to follow these instructions
could result in serious property damage and serious
personal injury or death.
1.8 FIELD CONNECTION DIAGRAMS
1.8.1 Refer to the pump Installation, Operation, and Main-
tenance Manual for specific details unique to the
pump.
1.8.2 Refer to the flow sensor/transmitter Installation,
Operation, and Maintenance Manual for specific
details unique to the flow sensor/transmitter.
1.8.3 The following field connection diagrams should be
reviewed prior to unit installation and operation.
Drawing # Description
Job Specific Print(s) Wiring Diagram(s)
Job Specific Print Dimensional Drawings
CAUTION: Failure to reinstall drain plugs, check all
joints for tighteness and flange bolts for proper
torque could result in leaks and/or flooding. Failure to
follow these instructions could result in property
damage and or moderate personal injury.

8
2.7 WIRING
2.7.1 POWER WIRING
The 70E/70M Pump Control Panel can be set up to
operate across a broad range of voltages. It was fac-
tory set to operate on the voltage shown on the
nameplate. Verify proper transformer primary wiring
per the job-specific wiring diagram. Check power
leads in accordance with wiring diagram enclosed in
control cabinet. The voltage tolerance is +10%/-10%.
2.7.2 ANALOG SIGNAL WIRING
If installing the panel on an existing system, shielded
cable (#22 AWG, Belden type 8762, Alpha #2411 or
equal) should be installed for the DC control wiring.
The shield must be terminated in the 70E/70M con-
trol panel. Do not connect the shield at the other end
of the cable! Insulate the shield so that no electrical
connection is made at the other end of the cable. A
twisted pair of #22 AWG conductors (Belden 8442 or
equal) can be used in place of shielded cable. The
cable length must be limited to 3000 feet for #22
AWG wire.
2.7.2.1 PRESSURE TRANSMITTER WIRING
(4-20 mA Analog Signals)
2.7.2.2 TEMPERATURE SENSOR WIRING
(Analog Resistance Input)
The 70E/70M uses resistance temperature detectors
(RTDs) to sense the suction and discharge water
temperatures. These devices change their resistance
as the water temperature changes.
2.7.2.3 FLOW SENSOR/TRANSMITTER WIRING AND
INSTALLATION (4-20 mA Analog Signal) (Optional)
The flow sensor should be installed at an angle no
greater than 45 degrees from top dead center in a
horizontal installation (see manufacturer’s IOM). See
the Bell & Gossett drawing for installation instruc-
tions. The signal wiring should be terminated in the
70E/70M panel at the terminals below.
2.7.3 DIGITAL SIGNAL WIRING
2.7.3.1 DIFFERENTIAL PRESSURE SWITCH PIPING
AND WIRING (Digital Signal) (Optional)
Differential pressure switches installed to sense the
increase in pressure between the pump suction and
discharge gauge taps are used to determine whether
a pump is running. Each switch should be wired from
the normally closed contact to the terminals below.
2.7.3.2 LOW LEVEL CONTROL WIRING
(Digital Signal) (Optional)
The low water level control option is utilized when
drawing water from a tank. In this control circuit, two
electrodes sense the water level inside of a water
tank. When the water level drops below its minimum
level, the pressure booster will shut down.
2.7.3.3 REMOTE START-STOP (Digital)
Install a non-powered dry contact digital input to ter-
minals J4-1 and J4-2. With the LOCAL-REMOTE-
OFF switch in the REMOTE position this contact
closure will provide the start signal.
2.7.3.4 REMOTE ALARM INDICATION (Digital Signal)
A digital output dry contact rated 2 Amps at 115V is
supplied on terminals J5-7 and J5-8. This output
closes to indicate that an alarm condition exists.
2.7.3.5 PUMP ON/OFF REMOTE SIGNAL (Digital Signal)
A digital output dry contact (one per pump) rated 2
Amps at 115V is provided for remote monitoring of
pump On/Off status. This contact closes when a
pump is running.
Terminals (J3) + - Shield
Suction Pressure 3 2 4
System (discharge) Pressure 3 6 4
Temperature Sensor (RTD) Wiring Terminals (J3)
Low Temperature Sensor (suction) 13, 14
High Temperature Sensor (discharge) 16, 17
Optional Flow Sensor/Transmitter + - Shield
Terminals (J3) 9 8 10
Pump # 1 2 3
Terminals (J4) 9, 8 10, 11 11, 12
Pump On Pump Off
Ground Electrode Electrode
Terminals (J4) 66 67 68
Pump On/Off Signal Pump #1 Pump #2 Pump #3
Terminals (J5) 9, 10 11, 12 13, 14
3.0 PUTTING THE UNIT INTO SERVICE
3.1 PUMP ROTATION, 3 PHASE MOTORS ONLY
With the disconnect switch engaged to the “ON”
position, momentarily start and stop each motor with
the pump motor key on the key pad. See Paragraph
5.3 on page 16. Observe the pump shaft rotation.
3.2 If incorrect, turn the main disconnect off and inter-
change any two wire leads leaving the starter over-
load block and going to the motor.
3.3 Unit is now ready for operation (factory assembled
tested units only).
SECTION 3 –START UP
WARNING: Rotating shafts can catch loose cloth-
ing. Do not operate the pump without all guards in
place. Failure to follow these instructions could result in
serious personal injury, death, and/or property damage.
CAUTION: Seal Damage may occur. Do not run
pumps dry. Fill and vent the pump volute prior to
operation. Failure to follow these instructions could re-
sult in property damage and/or moderate personal injury.
DANGER: High Voltage 3 phase power can kill.
Disconnect and lockout power prior to servicing
unit. Failure to follow these instructions could result in
serious personal injury, death, and/or property damage.
DANGER: Electrical shock hazard. Inspect all elec-
trical connections prior to powering the unit. Wiring
connections must be made by a qualified electrician in
accordance with all applicable codes, ordinances, and
good practices. Failure to follow these instructions
could result in serious personal injury, death, and/or
property damage.

9
4.1 GENERAL NOTES
4.1.1 The HELP key can be pressed at any time without
disrupting system operation. The HELP key will give
details on alarm conditions or if used in conjunction
with any function key will give a detailed explanation
of the function key application.
4.1.2 The key names are shown in CAPITAL LETTERS and
the operator interface responses are shown in bold
CAPITAL LETTERS.
4.2 POWER-UP
4.2.1 Put LOCAL-REMOTE-OFF (LRO) switch in the
LOCAL position.
4.2.2 Turn main disconnect on.
4.2.3 The operator interface will display the ITT Bell &
Gossett corporation signature.
4.2.4 The operator interface will perform a lamp test and
display test.
4.2.5 Press CLEAR to stop the test.
4.2.6 The START-STOP led will be red.
4.2.7 If the START-STOP led is not illuminated as des-
cribed above, press the START-STOP button once to
obtain the red LED.
4.2.8 The Auto-Hand led should be green for auto opera-
tion. If not green, press the AUTO-HAND key to
obtain green led.
4.2.9 Press the PUMP 1 ON/OFF key to obtain a flashing
green light. On two pump systems, press the PUMP
2 ON/OFF key to obtain a flashing green LED and
press PUMP 3 ON/OFF key, for 3 pump systems, to
obtain a flashing green LED. Refer to Section 5 for
operation.
4.3 SETUP & SYSTEM CONFIGURATION
4.3.1 Press the SETUP key. Enter the serial number of the
assembly by pressing the appropriate numeric keys.
Press the ENTER key. The serial number may always
be found by reading the 4th message after power up
and the word “booting”disappears.
4.3.2 Confirm the system setup values per the following
table. Use the UP or DOWN ARROW keys to move
through the menu. To change values, press ENTER,
modify the value using the numeric key pad or UP and
DOWN ARROW keys, press ENTER to accept the
modification.
SECTION 4 –SETUP AND FEATURES
WARNING: Electrical shock hazard. Inspect all elec-
trical connections prior to powering the unit. Wiring
connections must be made by a qualified electrician in
accordance with all applicable codes, ordinances, and
good practices. Failure to follow these instructions
could result in serious personal injury, death, and/or
property damage.
WARNING: Electrical shock hazard. Multiple power
sources. The off position of the LOCAL-REMOTE-
OFF switch does not disconnect all of the power sources
in the technologic panel. All power sources must be dis-
connected prior to entering the control panel. Failure to
follow these instructions could result in serious per-
sonal injury, death, and/or property damage.
Default Allowable Field
Line # DISPLAY ➀Value Range Values
1 Number of Pumps 1
Number of Pumps on the System (1-2-3) 1 1 - 3
2 Alternation Sequence None
Use up/down keys to select: None, Duplex, Triplex - all, None As Listed
Triplex - 132A
3 Auto Alt. Period 0
O = Manual only, for Auto Enter 0 0 - 6553
Alternation period in hours
4 Reset Pump 1 Time No
Yes = arrow key to reset No Y/N
5 Reset Pump 2 Time No
Yes = arrow key to reset No Y/N
6 Reset Pump 3 Time No
Yes = arrow key to reset No Y/N
7 Staging Type Watts
Use up/down keys to select the primary method of Watts As Listed
pump staging: Watts, AMPs, PSI, GPM, TEMP
8 Pump #1 HP 0
Enter Motor #1 nameplate horsepower 0 0 - 99.9
9 Pump #2 HP 0
Enter Motor #2 nameplate horsepower 0 0 - 99.9
10 Pump #3 HP 0
Enter Motor #3 nameplate horsepower 0 0 - 99.9
11 Pump 1 AMPs 0
Enter Motor #1 nameplate FLA 0 0 - 175

10
Default Allowable Field
Line # DISPLAY ➀Value Range Values
12 Pump 2 AMPs 0
Enter Motor #2 nameplate FLA 0 0 - 175
13 Pump 3 AMPs 0
Enter Motor #3 nameplate FLA 0 0 - 175
14 Pump #1 GPM 0
Enter Staging GPM of Pump #1 0 0 - 30,000
15 Pump #2 GPM 0
Enter Staging GPM of Pump #2 0 0 - 30,000
16 Pump #3 GPM 0
Enter Staging GPM of Pump #3 0 0 - 30,000
17 1 - 2 Stage % 80
Enter percent of NPHP, NPFLA, or GPM to stage 2nd
pump in sequence 80 0 - 100
18 2 - 3 Stage % 80
Enter percent of NPHP, NPFLA or GPM to stage 3rd
pump in sequence 80 0 - 100
19 Destage % 90
Enter percent of stage percent for destaging with HP,
AMPs, or GPM only 90 0 - 99
20 Staging PSI 0
Enter pressure to stage in PSI mode after entering system 0 0 - System Span
pressure span (see Line 38)
21 Destaging PSI
Enter pressure to destage in PSI mode after entering system 0 0 - System Span
pressure span (see Line 38)
22 Forced Destg Tmr. 60
Enter in minutes (0 - 99) value of a timer after which the 60 0 - 99
pump will be forced to de-stage; ‘0’disables this function
23 GPM Xmiter Span
Enter value equal to GPM transmitter calibration 0 0 - 30,000
24 2nd Stage Proof 2
2nd pump stage proof time in seconds 5 1 - 180
25 3rd Stage Proof 2
3rd pump stage proof time in seconds 5 1 - 180
26 Display Watts YES
Use up/down keys to enter yes or no Yes Y/N
27 Three phase Watts YES
Use up/down keys to enter yes or no, YES = three phase, Yes Y/N
NO = single phase
28 Display AMPs YES
Use up/down keys to enter yes or no Yes Y/N
29 Display GPM No
Use up/down keys to enter yes or no No Y/N
30 Suction Press. Span 100
Enter value equal to suction pressure span 100 0 - 999
31 High Suct. Press. 0
Enter value of the high suction pressure above which an 0 0 - 100
alarm will be set
32 High Suct. Pr. TMR. 0
Enter in seconds (0 - 999) value of high suction cutout 0 0 - 999
proof timer, ‘0’disables this function
33 High Suct. Reset 0
Enter value of the high suction reset pressure 0 0 - 100
34 Low Suct. Press. 5
Enter value of the low suction pressure below which an 5 0 - 100
alarm will be set
35 Low Suct. Pr. TMR. 20
Enter in seconds (0 - 999) value of low suction proof timer; 20 0 - 999
‘0’disables this function
36 Low Suct. Reset 10
Enter value of the low suction reset pressure 10 0 - 100

11
37 Low Suct. Auto RST Yes
To change the Low Suction reset, use UP/DOWN key Yes Y/N
to enter yes or no
38 System Press. Span 300
Enter value equal to system pressure span 300 0 - 999
39 High Sys. Press. 125
Enter value of the high system pressure above 125 0 - SPAN
which an alarm will be set
40 High Sys. PR. TMR. 20
Enter in seconds (0 - 60) value of proof timer, 20 0 - 60
‘0’disables this function
41 Audible Alarm 0
Enter 1 for low suction only, 2 for high system only, 3 for 0 0 - 3
low suction and high system, 0 to disable audible alarm
42 Low Sys. Press. 0
Enter value of low system pressure below 0 0 - Span
which an alarm will be set
43 Low Sys. Pr. Tmr. 0
Enter in seconds (0 - 60) value of proof timer, 0 0 - 60
‘0’disables this function
44 High Temp Cut Out 125
Enter value of the high temp cut-out in deg. F above 125 0 - 200
which an alarm will be set
45 High Temp PR. TMR. 20
Enter in seconds (0 - 60) value of proof timer, 20 0 - 60
‘0’disables this function
46 High Temp. Reset 100
Enter value of the high temp. Reset in deg. F 100 0 - 199
47 FS NFSD PR TMR
Enter in seconds (5 - 60) value of the 0 5-60
no flow condition proof timer, ‘0’disables the function
48 NFSD Temp. Cut Out 0
Enter NFSD temp differential, ‘0’disables this function 5 0-10
49 NFSD Min. Run TMR. 10
Time period (minutes) to ignore no flow sequence 10 0 - 999
after restart from no flow shut down
50 NFSD Restart PSI 0
Enter value of system pressure to restart 0 0 - SPAN
51 NFSD Test Pr. TMR. 0
Enter in seconds (0 - 999), value of the no flow condition 0 0 - 999
proof timer ‘0’disables this function
52 DP 1 Start Time 30
Time period in seconds to allow pump 1 to start prior 30 15-60
to detecting pump failure
53 DP2 Start Time 30
Time period in seconds to allow pump 2 to start prior 30 15-60
to detecting pump failure
54 DP3 Start Time 30
Time period in seconds to allow pump 3 to start prior to 30 15-60
detecting pump failure
55 DP 1 Proof Time 3
Pump #1 failure proof time in seconds 3 0-30
56 DP 2 Proof Time 3
Pump #2 failure proof time in seconds 3 0-30
57 DP 3 Proof Time 3
Pump #3 failure proof time in seconds 3 0-30
58 Minimum Run Timer 5
Minimum time a pump will run after auto start in minutes 5 0-25
59 Backup Staging WATTS, AMPS,
Select method of backup staging in the event WATTS PSI, GPM,
the primary method fails TEMP

60 TEMP Xmitr Span
Enter value equal to remote temperate transmitter span.
Note this input is used for temperature staging requiring 0 999
a 4-20mA temperature transmitter.
61 Stage TEMP Rise
Select yes to stage pumps on temperature rise Yes Y/N
based on setpoint.
62 Temp Staging H
Enter the high temperature for staging/destaging. 75 999
63 Temp Staging L
Enter the low temperature for staging/destaging. 50 999
64 Standby
When yes is selected disables the staging of the N Y/N
last pump in sequence.
65 DI SUC ALARM
0 = Low Level 0 0-1
1 = Low Pressure
66 DI SA PT (DI ALARM TMR)
Enter in seconds proof timer for alarm. 1 0-99
“0”disables this function.
67 Default All ? N
Set all parameters to factory default N Y/N
In every case above the message scrolls right to left twice and blanks out. Press CLEAR twice to exit.
NOTE: Keys from Line 2 through Line 12 (except clear) also have numbers for numerical entry within a menu.
NOTES: ➀One pump must be enabled to obtain start function. Has green - run and red - stop LED.
➁To change selection the START-STOP key must be in stop. Green LED-AUTO, red LED-HAND.
➂The alternation sequence will be according to the user menu selection and will be displayed according to the message of 4.5 below
to match that selection.
12
4.4 KEY FUNCTIONS
4.3.3 Press the CLEAR key. You will return to the standard
operating display.
HELP MESSAGES. PRESS HELP AFTER
CLEARING ANY ALARMS
LINE KEY MESSAGE
➀1 Start/Stop Used to start and stop pumps.
➁2 Auto/Hand Used to select auto or manual operation.
3 Pump 1 Used to start/stop pump 1; green = run, flashing green = enable,
Enable flashing red = failure.
4 Pump 2 Used to start/stop Pump 2; green = run, flashing green = enable,
Enable flashing red = failure.
5 Pump 3 Used to start/stop Pump 3; green = run, flashing green = enable,
Enable flashing red = failure.
➂6 Alternation Used to alternate pump sequence.
7 Service Test Used to perform service test.
8 Reset/Silence Used to reset alarm after its correction and to silence audible alarm.
9 Used for selection in a menu.
10 Set Up Used to define system parameters - security.
11 Clear Clears latest entry (operation and data).
12 Help User assistance; press: Help + Key/Item.
13 Enter Used to accept data and operation input.
➔
➔
NOTES:
➀The top line of each display is stationary while the changeable value, if any, is flashing. The bottom line scrolls from right to left continuously. To scroll from
display to display continuously press either arrows. At any display the data may be changed by pressing enter, pressing the key or keys to change data, and
pressing ENTER again. If a value to be entered is out of range the following is displayed:
Top Line - value out of range Bottom Line - X1 < = Value < = X2 With X1 being the minimum value and X2 the maximum value of the range
➁Note: For software version 3.28 or greater.

13
4.5 NORMAL OPERATING MESSAGES
4.5.1
NORMAL SCROLL AUTO OR HAND
LOCAL OR REMOTE ➀➁
MESSAGE CONDITION
Alternation ➂“None”According to menu entry for simplex,
or duplex or triplex.
“1-2, 2-1”
or
“1-2-3
2-3-1”
3-1-2
or
“1-2-3
1-3-2”
Elapsed Time P1 Hours XXX
Elapsed Time P2 Hours XXX If 2 pumps selected
Elapsed Time P3 Hours XXX If 3 pumps selected
High suction cutout ➂Bottom Line Only
No flow shut down ➂Bottom Line Only
Suction Pressure PSI XX If span is entered
System Pressure PSI XX If span is entered
Suction Temperature XX F˚If high temperature cut-out is entered
System Temperature XX F˚If high temperature cut-out is entered
Total AMPS XXX If selected in menu
Total KW XXXX If selected in menu
Flow = XXXXX ➃GPM If span entered
* Alarm (flashing) When an alarm occurs
Startup —Standby Bottom Line Only
Alternation Engaged Standby Bottom Line Only
Pump Not Available Bottom Line Only
Please Enable a Pump Bottom Line Only
Not Allowed Bottom Line Only
User Setup Lost Top Line
Call Factory For Assistance Bottom Line Only
NOTES:
➀Press ENTER and ARROW keys for scroll lock.
➁Display is blank if CPU fails.
➂Not scrolled in hand operation.
➃XXXX reverts to ??? if span is entered and signal is less than 4mA.
*See 4.5.2 for alarm messages.

4.5.2 ALARMS
ALARMS
CONDITION HELP MESSAGE
Overload X Failure Check AMP draw, use manual reset if OK
High Suction PSI High suction pressure –check suction
pressure and trip point
Low Suction PSI Low suction detected –check suction
pressure and trip point
High System PSI High pressure detected in the system –
check trip point
Low System PSI Low pressure detected in the system –
check PRV and set point
Water Level Low Check water level in holding tank
Water Temp High Check water temperature
Pump X Off Need pump in system –if OK enable pump
Suction Trans Fail Check wiring, piping, polarity, and continuity
System Trans Fail Check wiring, piping, polarity, and continuity
Flow Trans Fail Check wiring, piping, polarity, and continuity
Suction RTD1 Fail Check wiring, continuity
System RTD2 Fail Check wiring, continuity
Power Fail Check cable connections and plug insertions
Pump X Failure Check DP switch, impeller, coupler, motor
Remote Contact Open ➀
7 Day Timer Off ➀
NOTES:
➀Bottom line only. No help message.
14

15
5.1 POWER UP
5.1.1 Initial –turn selector switch to local or remote with
power on.
5.1.2 Message Scroll
A. “Booting”
B. “ITT Bell & Gossett”
“Pressure Booster”
C. “Technologic 70E”
“Pump Controller”
D. “Copyright 1995”
“Fluid Handling Division”
E. “FW Release VX.XX”
“Serial # XXXXX”
F. Normal Scroll per 4.5 commences
5.1.3 Set Up and System Configuration. User Menu.
A. Press the SETUP key. Enter the serial number fol-
lowed by the ENTER key.
B. Press the UP or DOWN arrow key to step through
user menu of paragraph 4.3.2. To change any
value press ENTER, modify the default value using
the numeric key pad, and then press ENTER to
load. Press CLEAR to exit menu.
5.2 AUTO OPERATION
5.2.1 Local (turn selector switch to local or remote).
5.2.2 Auto/Hand –select Auto.
5.2.3 Enable/Pump/s by pressing 1, 2, or 3 PUMP ENABLE
keys according to number of pumps in menu. Green
LED’s flash.
5.2.4 Start/Stop –Press START/STOP key momentarily.
Green LED is on. Note: Only if selector switch is
turned to local or remote and at least 1 pump is
enabled. Message: Top Line –see below. Bottom
Line –“start up standby”.
5.2.5 Pump Start –The first pump in the alternation
sequence starts and LED turns to solid green. Only 1
pump is on.
5.2.6 Alternation –If the alternation key is pressed the next
pump in sequence starts and both pumps then run
for 5 seconds at which time the first pump stops.
During alternation: Top Line –normal scroll. Bottom
Line –“Alt. Engaged standby”.
If Alternation Timer picks up the action is the same as
above provided an entry other than 0 is made in the
user menu.
5.2.7 Staging –According to the method of staging selected
in the user menu, i.e., HP, AMPs, PSI, GPM the 2nd
pump in the alternation sequence will turn on when:
1. HP matches % stage value
or 2. AMP value matches % stage value
or 3. GPM value matches % stage value
or 4. Pressure matches PSI stage value
The third pump in the alternation sequence turns on
similarly.
Staging will not occur if:
1. No flow condition is on.
2. High suction is on.
3. Low suction is on.
4. High temperature is on.
5. High system in on.
6. Timed de-stage is on.
7. Starter feedback is not on.
The 3rd pump stages in the same manner as the sec-
ond pump according to the menu entry for that pump.
5.2.8 Destaging occurs when:
1. HP or AMPs (selected method of stating) of the
last pump staged, plus the cumulative value of all
other running pumps, reaches the destage percent
value entered in the user menu, and a proof timer
and the minimum run timer time out.
2. GPM decreased to the value of the destage GPM
in the menu. The pump stops after a proof timer
and then a minimum run timer.
3. PSI setting of the destage PSI value in the menu
is reached. The destage PSI is higher than stage
PSI and a proof timer and the minimum run timer
time out.
All of these methods of destaging are exclusive and
may not be mixed.
5.2.9 Pump Shut Down occurs when:
5.2.9.1 High Suction Pressure analog signal triggers when
“High Suction Pressure”of the menu is reached and
the “High Suction Pressure Timer”of the menu ex-
pires. All pumps stop. Alarm message is set. Pumps
start when “High Suction Reset”is reached.
5.2.9.2 Low Suction analog signal reaches the level of “Low
Suction Pressure”in the menu and “Low Suction
Pressure Timer”in menu times out. All pumps stop.
Alarm message is set. Audio visual alarm is set.
Pumps restart when “Low Suction Reset”setting in
the menu is reached. Auto reset.
5.2.9.3 High System Pressure analog signal triggers when
“High System Pressure”of the menu is reached and
“High System Pressure Timer”of menu setting ex-
pires. All pumps stop. Alarm message is set. A-V
alarm turns on. Manual reset to start pumps.
5.2.9.4 Low System Pressure analog reaches menu setting
“Low System Pressure”and after “Low System
Pressure Timer”menu setting times out the alarm
message is set. Does not stop pumps. Auto reset.
5.2.9.5 High Temperature analog reaches “High Temperature
Cut Out”value of the menu. The “High Temperature
Pressure Timer”times out. Alarm message set.
Pump/s stop. Auto reset occurs when “High Temp-
erature Reset”of the menu is reached. NOTE: A value
must be entered for temperature display.
5.2.9.6 Low Level probes detect low level. After non-
accessible proof timer of 5 seconds the pumps stop.
Alarm message is set. When level returns to normal
and another non-accessible proof timer of 5 seconds
times out the pumps start. Auto reset.
SECTION 5 –OPERATION

16
5.2.9.7 NFSD analog RTD inputs reach a temperature within
“NFSD Cut Out”in the menu and after “NFSD Test
Pressure Timer”the pump stops. Pump will start
when “NFSD Restart Pressure”analog input reaches
this point in the menu setting. Auto reset. NFSD can-
not occur again until “NFSD Minimum Run Timer”
setting in the menu elapses. NOTE: NFSD will only
occur while one pump is running.
5.2.9.8 O.L.X. Failure from digital inputs from starters 1M, 2M
and 3M from pumps 1, 2 and 3, respectively trip and
shut down the associated pump. The next pump in
the sequence will start. “Alarm”message flashes.
Manual reset. Upon manually resetting the tripped
starter and pushing the reset key the previously
tripped starter starts it pump and the pumps run
together for 5 seconds and then return to normal
operation.
5.2.9.9 Pump X Failure from digital inputs from DP switches
1 through 3, respectively trip and shut down the
associated pump 1, 2, or 3 respectively. The next
pump in sequence then starts. Pump fail message
set. Manual reset. Shut off pump now restarts with 2
seconds delay.
5.2.9.10 (B) Alarms –are listed in Table 4.5.2. Most alarms are
discussed with the balance self-explanatory.
5.2.9.11 Normal Stop –with power on press start/stop key.
Enabled pumps have flashing green LEDs. All faults
are in memory and do not reset. Status of the 3 pump
keys is written to memory.
5.2.9.12 Stop –with power failure, alarms are reset but status
of start-stop key and 3 pump keys is held in memory.
5.3 MANUAL OPERATION (Watchdog LED Off)
5.3.1 Choose local or remote operation.
5.3.2 AUTO/HAND Key –select HAND.
5.3.3 Enable Pumps by pressing 1, 2 or 3 PUMP keys.
5.3.4 Start/Stop as 5.2.4 above.
5.3.5 Pump Start as 5.2.5 above.
5.3.6 Alternation –none.
5.3.7 Staging –none.
5.3.8 De-staging –none.
5.3.9 Pump Shut Down –none. However, all alarms of
Table 4 are active but do not shut the pumps down.
Some items are not in normal scroll. See foot note of
Table 3. Note that motors are still protected with O.L.
relays as part of the respective starter.
5.4 MANUAL OPERATION
(CPU Fails, Watchdog LED On)
The 70E/70M has a redundant feature allowing criti-
cal operation even though the microprocessor and its
support I.C.’s may have failed. Although this is a rare
occurrence, B&G has planned for this possibility.
When the Watchdog LED is “on”a separate section
of LOGIC is used to bypass the problem area. This
LOGIC has its own memory which is held with power
off by a small clock battery (B1). This memory must
be pre-set for operation as desired upon CPU failure.
To set this memory perform the following (assuming
unit is running in auto):
1. Press STOP Key –Red stop LED is on.
2. Press AUTO/HAND Key –Red HAND LED is on.
3. Press PUMP ENABLE Keys in any order for pumps
to run upon a CPU failure. Associated green LED’s
will flash.
4. Press AUTO/HAND Key –green AUTO LED is on.
5. ENABLE PUMPS as required and press
START/STOP key –green LED on.
The unit is now running in auto. If the CPU fails the
system reverts to the manual operation that was pre-
set in steps above. Pumps do not stop except for
overload trip. Press the PUMP ENABLE key to stop a
specific pump or press START/STOP key to stop all
pumps.
Press PUMP ENABLE key to re-start a pump. Only
the hand and pump LED’s are active. All other LED’s
and the display are off.

17
6.0 Preface: The following is a description of the hard-
ware, diagnostics, and corrective action to maintain
a process being controlled by the Technologic
70E/70M.
NOTE: The following should not be interpreted as the
maximum configuration of this controller, rather this
describes its application as a technologic 70E/70M
only.
6.1 TECHNICAL OVERVIEW
The Technologic 70E/70M is a micro-processor
based dedicated pump controller unique to and
exclusively manufactured by ITT Bell & Gossett. All
aspects of this unit are strictly proprietary to ITT Bell
& Gossett.
It consists of 3 electronic assemblies. The first
assembly consists of 3 circuit boards, i.e., display,
keyboard, and central processor unit (CPU) and is
referred to as the operator interface panel (OIP).
This operator interface is connected (with ribbon
cable) to a large board assembly known as the input/
output (I/O) board. This board contains a 24 volt DC
power supply to power the unit, all I/O, and a limited
number of sensors. It also has the terminals to con-
nect to external devices. All hard wire interface to the
outside world resides on this board and is protected
from the external environment.
The third electronic assembly is the power board
which connects to the OIP with a special cable. This
board senses amps, voltage, and calculates the total
power for staging and display on the OIP.
6.2 DIGITAL INPUTS
The controller has provision for digital inputs with a
voltage operating range of 22 to 26.4 VDC. This sig-
nal voltage must be obtained from the on-board 24
VDC power supply. Eighteen terminals are provided
with 6 of these terminals used to connect to the 24
VDC power supply.
It is not recommended that other power sources
be used without factory approval.
The terminal will accommodate (2) No. 18 AWG wires.
6.3 DIGITAL OUTPUTS
The controller has provision for relay outputs to con-
trol 120V 50/60 HZ devices.
Sixteen terminals are provided. All terminals will
accept up to (2) No. 14 AWG wires.
The relays are not removable. If defective the I/O
board must be returned to the factory for repair.
All relays operate as single pole single throw. Com-
ponents are provided to reduce contact arc and ex-
tend electrical life.
6.4 ANALOG INPUTS
Analog inputs are provided on the I/O board for
process variables and for flow readout. All analog
inputs operate at 4-20mA. They may be powered
from 24 VDC on board or self powered, in any mix,
without isolators.
Each analog input has 4 terminals associated with it,
i.e., 2 for signal input, 1 for 24 VDC, and 1 for shield
chassis ground.
Each analog input terminal will accommodate (2) No.
18 AWG conductors.
6.5 MEMORY
6.5.1 The EPROM is the only removable chip. However, it
is not recommended that it be changed by other than
the factory.
The EPROM is programmed by ITT Bell & Gossett
and its code is copyrighted. On power up the soft-
ware version is displayed as FW RELEASE VX.XX on
the top line and unit assembly serial No. on the bot-
tom line.
6.5.2 The EEPROM holds all data entered by the operator.
It is not removable. Old data is erased with new. All
data may be erased by the factory at which time all
data reverts back to default values published else-
where in this manual.
6.5.3 The RAM chip is not replaceable and requires no
maintenance.
6.6 CPU
The CPU does not require any maintenance, and
cannot be replaced as a field repair.
6.7 POWER SUPPLY
The power supply provides 24 VDC for all digital and
analog signals. It is specifically rated only for the con-
troller and other loads should not be applied without
factory approval.
The power supply also supplies 5 VDC for all TTL
devices.
The power supply is protected with Fuse F1 located
near the 120 VAC line terminals.
6.8 DIAGNOSTICS (Service Test)
The Technologic 70E/70M has built in I/O diagnostic
capabilities activated with a SERVICE TEST key while
in normal message scroll. It consists of 2 menus, i.e.,
read only and read/write. Read/write overrides the
program and requires a security code.
NOTE: Service test cannot be used if any of the fol-
lowing occur:
1. Power is off.
2. Display and or the start/stop LED is off (red or
green).
3. Watch dog LED (CR6) on the I/O board on.
6.9 READ ONLY –Digital Inputs
6.9.1 To Enter –press CLEAR key twice and then press
SERVICE TEST key once while in normal scroll.
6.9.2 Display –numbers 1 through 12 (implied) on the top
line and status on the second line. Status is displayed
as a “1”for signal on and “0”for signal off.
SECTION 6 –MAINTENANCE

18
6.9.3 Interpretation –compare the status shown to the
following terminals and the wiring diagram. For
example, starter 1M “on”signal at J4 4 and 8 is dis-
play No. 3 and should be a “1”if the 1M starter is
energized.
Input J4 Input No.
Signal Terminals On Display
Local ** 1 to 2 1
Remote 3 to 2 2
1M 4 to 5 3
2M 6 to 5 4
3M 7 to 8 5
* DP1 9 to 8 6
* DP2 10 to 11 7
* DP3 12 to 11 8
* Low Level 18 to 17 12
* 7 Day Timer 19 to 20 13
* Optional
** This input is also used for remote start when the selector switch
is in the REMOTE position.
NOTE: Terminal No.’s on the right, e.g., 2, 5, 8, etc. are all in common.
6.9.4 Corrective Action –compare the inputs on to the
device/s connected to the digital inputs and trigger
same. If a “1”is not received check the associated
wiring or the particular device and correct or replace
the cause of the fault.
6.9.5 Controller Operation –the keyboard (except the
CLEAR key) and all LED’s cannot change state. The
display is dedicated to the digital input display. The
program is otherwise active.
6.9.6 Exit –press CLEAR twice and then press ENTER
twice.
6.10 READ ONLY ANALOG INPUTS
6.10.1 To enter (from normal scroll) –press CLEAR key
twice and press SERVICE TEST key once. Then
press CLEAR key once.
6.10.2 Display –ANALOG INPUT TEST on top line and input
type and measurement on bottom line. Press key 1,
2, 3 or 4 to read channels 1, 2, 3 or 4 in % with 4mA
@ 20% and 20mA at 100%. Six other items may be
accessed with the up arrow key. These items are:
RTD 1(˚F), RTD 2(˚F), Dc supply (DCV), and power
board readings. “Power Board Readings”is now dis-
played on top line. These readings are: voltage in
volts, current in amps, and power in watts.
6.10.3 Interruption –read channel values from connected
devices with channel 1 as suction pressure, channel
2 as system pressure, channel 3 as flow input
(optional) and channel 4 is unused at this time.
If there is a problem replace the analog source with a
known source such as a 20mA signal generator.
Connections to terminal block J3 are as follows:
Source 2 Wire
*Step Signal Input Terms Terms
1 Suction 1 1-, 2+ 2-, 3+
2 System 2 5-, 6+ 6-, 3+
3 Flow 3 7-, 8+ 8-, 9+
Polarity shown is that of the signal analyzer
and not the markings on the I/O board.
4 not used 4 ——
5 RTD1 RTD in 1 —13, 14
6 RTD2 RTD in 2 —16, 17
A substitute 100 OHM resistor @ terms.
13 & 14, or 16 & 17 will result in a temperature
reading of 32˚F.
7 DC Supply = 24.00 VDC ± 10% satisfactory.
8 Display top line changes to: Power Board
Readings.
8 Voltage = XXX VAC equal to system line
voltage.
9 Current = XXX amps equal to actual load.
10 Power = XXX watts actual power.
* Step = each momentary step of up arrow key.
6.10.4 Corrective Action –correct the wiring or a faulty
device. If a signal is good with a signal generator then
the inter-connection wires are good and the sensor is
bad. In the case of RTD’s a substitute 100 OHM
resistor will isolate a problem to the sensor.
Power board readings may be confirmed by a sepa-
rate clamp-on line current readings, line voltage read-
ing, and calculations for watts.
6.10.5 Controller Operation –keyboard (except arrows,
clear, 1, 2, 3, 4) and all LED’s cannot change state.
The display is dedicated to the analog input display.
The program is otherwise active.
6.10.6 Exit –press CLEAR once and then press ENTER
twice.
6.11 MANUAL CONTROL –OUTPUTS
To enter this section a user code (serial no.) is
required. Since the program is being overridden cau-
tion must be exercised.
IF NOT SURE CALL THE FACTORY. IF “USER
CODE”IS DISPLAYED PRESS THE ENTER KEY
TWICE TO RETURN TO NORMAL SCROLL.
DO NOT LEAVE UNIT IN SERVICE TEST.
6.12 DIGITAL OUTPUTS
6.12.1 To enter:
A. Normal scroll on display
B. Press CLEAR twice
C. Press SERVICE TEST
D. Press CLEAR twice
E. Enter user code (serial no.)
F. Press ENTER key
WARNING: Prevent electrical shocks. Disconnect
the power supply before beginning installation.
Failure to follow these instructions could result in
serious personal injury, death, and/or property damage.
DANGER: Troubleshooting live control panels ex-
poses personnel to hazardous voltages. Electrical
troubleshooting must only be done by a qualified electri-
cian. Failure to follow these instructions could result
in serious personal injury, death, and/or property
damage.

19
6.12.2 Display = output #1 through 8 on top line and state,
either 0 or 1, on bottom line. A “1”= output “on”
(relay coil energized) and a “0”= off. Toggle output
with a numerical key to match the output #.
6.12.3 Interpretation –this is an output forcing operation to
allow checking of wiring and the connected device.
Since some outputs are normally closed the following
must be observed.
Relay
Contact
Output Relay with a Output
# Function # State of 1" Terminals
1 1M control K5 Closed J5 1-2
2 2M control K6 Closed J5 3-4
3 3M control K7 Closed J5 5-6
4 Alarm K8 Open J5 7-8
5 Pump 1 on K1 Closed J5 9-10
6 Pump 2 on K2 Closed J5 11-12
7 Pump 3 on K3 Closed J5 13-14
8 not used K4 Closed J5 15-16
Correlate output terminals to the wiring diagram for
actual practice.
NOTE: It is important to view status on the display
before any state is changed. This shows the actual
output state of the program as it was presently
running.
6.12.4 Corrective Action –if a fault is suspected trigger the
associated output to confirm that either connections
to the connected device is the problem.
6.12.5 Controller Operation –all outputs are static and con-
trolled by the numerical keys. The program is static.
Confine operation to numerical keys. LEDs are static.
6.12.6 Exit –press CLEAR and ENTER. All forced outputs
are cleared.
6.13 PRE-DETERMINED FAULT AND FAULT CONTROL
6.13.1 Pre-determined Fault –a software timer known as a
watch dog times out upon a software or CPU failure
and shuts down in a predicable manner. LED CR6 on
the I/O board turns on and all outputs are turned off.
OIP board components are now used to determine
the state of all relays according to LOGIC installed by
the factory.
6.13.2 Fault Control –operates as follows:
A. Press START-STOP key for stop.
B. Press AUTO-HAND key for HAND.
C. Enable pump/s as desired. (Press PUMP keys) to
run upon control failure.
D. Press AUTO-HAND key for auto.
Press START-STOP key to start.
E. Upon a CPU or software fault the unit will revert to
pumps selected in C above.
If power is momentarily interrupted the unit will return
to the same “hand”operation as before provided
pump keys were not pressed while the power was off.
6.14 PROTECTION
6.14.1 Analog inputs –the analog inputs provided on the
Technologic 70E/70M must be wired according to the
wiring diagram that shipped with the unit.
6.14.2 Protection –all analog inputs are protected from high
voltage, crossed wiring, etc. A 1 AMP fuse (F1) fast
acting 3AG located just above relays K6, K7 and K8
protects all analog inputs up to 600V (in error only). A
sustained fault may blow this fuse and burn out the
input resistors. They are located just below terminals
J3 and are numbered R3, R4, R1 and R2 for chan-
nels, 1, 2, 3 and 4 respectively.
6.14.3 Field Repair –resistors R1, R2, R3 and R4 plug in
and are easily replaced.
Unplug a bad resistor by pulling it from the socket
and replace with a 124 OHM, 1/4watt, 1%, metal film
(no substitute). Cut leads and bend to fit sockets.
Resistors are also available from the factory.
NOTE: It is not always clear that a resistor is bad by
observation. It may be brown or black. The best way
to check is unplug the resistor and check with an
ohm-meter. DO NOT check resistors on board. It may
cause other problems and will not give a true reading.
6.14.4 Digital Inputs –as long as input power is derived from
the integral 24VDC power supply they are protected.
6.14.5 Digital Outputs –each output shall not exceed 1 AMP
@ 115 VAC (6 AMP inrush).
6.14.6 Power Supply –the power supply has inherent short
circuit protection, thermal overload shutdown, tran-
sient protection, and line noise filtering. To reset the
power supply cycle input power off and on.
6.14.7 Protection –fuse F1 located near terminal J4 (power
in) protects the power supply. It is rated 1 AMP fast
acting #3 AG.
6.14.8 Operator Interface –it is protected by the I/O board.
6.15 FAULT ISOLATION
Certain messages, common sense, observation, and
diagnostics allow fault isolation of an on-board fault.
6.15.1 CONDITION: RAM Error on the display and
auto/hand red LED on. Watch dog LED CR6 is on.
Corrective Action:
Pumps will run in manual operation according to
paragraph 5.4 above. Replace the operator interface.
6.15.2 CONDITION: Comm Error in the display and pump 1
red LED is on. Watch dog LED CR6 is on.
Corrective Action:
Pumps will run in manual operation according to
paragraph 5.4 above. Replace the operator interface.
CAUTION: Do not trigger outputs unless the resul-
tant action is known. Do not trigger all outputs on at
one time or trigger at random. Failure to follow these
instructions could result in property damage and/or
personal injury.
WARNING: Electrical shock hazard. Multiple power
sources. The off position of the HAND-OFF-AUTO
switch does not disconnect all of the power sources in
the Technologic panel. All power sources must be dis-
connected prior to entering the control panel. Failure to
follow these instructions could result in serious per-
sonal injury, death, and/or property damage.

20
6.15.3 CONDITION: I/O Error on the display and pump 2
red LED is on. Watch dog LED CR6 is on.
Corrective Action:
Pumps will run in manual operation according to
paragraph 5.4 above. Replace the operator interface
and the I/O board.
6.15.4 CONDITION: E2 Bad. System Halted. Call factory
for assistance. Watch dog LED CR6 is on.
Corrective Action:
Pumps will run in manual operation according to
paragraph 5.4 above. Replace the operator interface.
6.15.5 CONDITION: No Program Found on the display and
pump 3 red LED is on. Watch dog LED CR6 is on.
Corrective Action:
Pumps will run in manual operation according to
paragraph 5.4 above. Replace the operator interface.
6.15.6 CONDITION: E2 Defaults Set on the display. Watch
dog LED CR6 is not on.
Corrective Action:
Remove EPROM. Watch dog LED CR6 will turn on.
Pumps will run in manual operation to paragraph 5.4
above. Replace the operator interface.
6.15.7 Display Blank
A. Watch dog LED CR6 is off.
Corrective Action:
Confirm power to OIP with at least 1 LED on or
measure 120 volt. A. C. at J6 L1 and N. If power
present reboot and if display stays off, replace OIP.
B. Watch dog LED CR6 is on.
Corrective Action:
None. No display. This condition except back light
is on. Unit will run in manual per paragraph 5.4.
6.15.8 Key Board Inoperative
A. Watch dog LED CR6 is off.
Corrective Action:
Be sure power is on by checking or observing dis-
play or at least one LED. Press RESET and HELP
keys. If condition prevails replace OIP.
B. Watch dog LED CR6 is on.
Corrective Action:
Only 4 keys are active: START/STOP, PUMP 1,
PUMP 2, and PUMP 3. If these keys are inopera-
tive replace the OIP. Unit will run in manual per
paragraph 5.4.
6.15.9 LEDs Malfunction
A. Observe that all LEDs turn on during the booting
process. Watch dog LED CR6 is off.
Corrective Action:
If any fail to operate replace the OIP.
B. Watch dog LED CR6 is on. Only the red HAND
LED and the 3 green LEDs with one for each
pump key will turn on, or off. Unit will run in manual
per paragraph 5.4.
Corrective Action:
Replace OIP.
C. Watch dog LED CR6 is off but all LEDs or some
LEDs are off.
Corrective Action:
1. Check that the ribbon cable is plugged in.
2. Check for ribbon cable damage.
3. If all LEDs off check incoming power and
fuse F1.
4. Reboot.
5. Replace OIP unit.
6.15.10 Selector Switch Malfunctions
Press SERVICE TEST –
A. In local, input 1 should be “1”(J4).
B. In remote, input 1 = 0 with remote contact open
and input 2 = “1”(J4).
Corrective Action:
A and B are not present; correct wiring or replace
the switch. See wiring diagram for correct wiring.
A new switch may be obtained from the factory.
6.15.11 Suction Transducer Fault
A. Alarm per 4.5.2 indicates this fault.
B. Confirm with analog input test of CHNL 1 per 6.10.3.
Corrective Action:
1. Disable transducer by entering user menu per
4.3 and changing suction pressure span (item
11) to “0”. Alarm message turns off. Low and
high suction is disabled.
2. Replace this transducer.
6.15.12 System Transducer Fault
A. Alarm per 4.5.2 indicates this fault.
B. Confirm with analog input test of CHNL 2 per 6.10.3.
Corrective Action:
1. Disable transducer by entering user menu per
4.3 and changing system pressure span (item
37) to “0”. Alarm message will turn off. Low and
high system PSI and PSI staging is inoperative.
2. Replace this transducer.
DANGER: Troubleshooting live control panels ex-
poses personnel to hazardous voltages. Electrical
troubleshooting must only be done by a qualified electri-
cian. Failure to follow these instructions could result in
serious personal injury, death, and/or property damage.
WARNING: Electrical shock hazard. Multiple power
sources. The off position of the HAND-OFF-AUTO
switch does not disconnect all of the power sources in
the Technologic panel. All power sources must be dis-
connected prior to entering the control panel. Failure to
follow these instructions could result in serious per-
sonal injury, death, and/or property damage.