Quincy Compressor QSB Series User manual

QSB Series
Rotary Screw Belt Drive Air Compressor
Instruction Manual
This manual contains important safety information and should be made available to
all personnel who operate and/or maintain this product. Carefully read this manual
before attempting to operate or perform maintenance on this equipment.
Manual No. 65001-RA
December 2001 Edition

Table of Contents
Quincy Compressor® - QSB/T™
Section I - General
Standard Warranty.............................................................................................................................................................. 1
Safety Alert Symbols ......................................................................................................................................................... 2
Safety Precautions .............................................................................................................................................................. 3
Spare Parts Ordering Information....................................................................................................................................... 4
Serial/Model Identification Plate........................................................................................................................................ 4
Model Identification ........................................................................................................................................................... 5
Section II - Description
General Description............................................................................................................................................................ 6
The Compression Cycle ..................................................................................................................................................... 6
Air Flow ............................................................................................................................................................................. 7
Cooling System .................................................................................................................................................................. 7
Capacity Control System.................................................................................................................................................8-9
Electrical System .............................................................................................................................................................. 10
Indicators.......................................................................................................................................................................... 11
Gauges.............................................................................................................................................................................. 11
Section III - Installation
Receiving ......................................................................................................................................................................... 12
Moving the Unit to the Installation Site ........................................................................................................................... 12
Location ........................................................................................................................................................................... 13
Piping Connections .......................................................................................................................................................... 14
Relief Valves .................................................................................................................................................................... 14
Pressure Vessels ............................................................................................................................................................... 14
Electrical .......................................................................................................................................................................... 15
Guards .............................................................................................................................................................................. 15
Manual Vent and Shutoff Valves ..................................................................................................................................... 15
Water and Sewer Facilities at the Installation Site ........................................................................................................... 16
Compressor Rotation........................................................................................................................................................ 16
Fan Rotation ..................................................................................................................................................................... 16
Section IV - Operating Procedures
Prior To Starting............................................................................................................................................................... 18
Starting the Compressor ................................................................................................................................................... 18
Stopping the Compressor - Normal Operation ................................................................................................................. 19
Stopping the Compressor - Emergency Operation ........................................................................................................... 19
Electronic Control Operation (optional)......................................................................................................................19-21
Section V - Maintenance or Service Preparation
Maintenance or Service Preparation................................................................................................................................. 22

Table of Contents
Quincy Compressor® - QSB/T™
Section VI - Servicing
Safety ............................................................................................................................................................................... 24
Water Removal................................................................................................................................................................. 24
Air/Fluid Separator Element............................................................................................................................................. 25
Air Filter........................................................................................................................................................................... 25
Control Line Filter............................................................................................................................................................ 25
Shaft Seal ....................................................................................................................................................................26-27
Differential Pilot Valve .................................................................................................................................................... 28
Pressure Switch ................................................................................................................................................................ 28
Water Temperature Regulating Valve (Water-cooled Units Only) .................................................................................. 28
V-belt Drive Maintenance ...........................................................................................................................................28-31
Belt Replacement/Tension Adjustment .......................................................................................................................32-33
Electronic Control (optional)............................................................................................................................................ 34
Air and Fluid Tubing........................................................................................................................................................ 34
O-ring Fittings .................................................................................................................................................................. 35
Section VII - Compressor Fluids
Fluid Specifications.......................................................................................................................................................... 36
Lubrication ....................................................................................................................................................................... 37
Fluid Level ....................................................................................................................................................................... 37
Fluid Filter........................................................................................................................................................................ 38
Factors Affecting Fluid Life ............................................................................................................................................. 38
Fluid Analysis Program - General .................................................................................................................................... 39
QuinSyn PG ..................................................................................................................................................................... 40
QuinSyn XP ..................................................................................................................................................................... 41
QuinSyn Plus.................................................................................................................................................................... 42
QuinSyn Fluids ................................................................................................................................................................ 43
QuinSyn Flush.................................................................................................................................................................. 44
Cleaning and Flushing With QuinSyn Flush.................................................................................................................... 45
Converting to QuinSyn PG .............................................................................................................................................. 46
Converting to QuinSyn XP .............................................................................................................................................. 47
Converting to QuinSyn Plus............................................................................................................................................. 47
Converting to QuinSyn .................................................................................................................................................... 48
Sampling Procedures........................................................................................................................................................ 49
Analysis Report (sample) ................................................................................................................................................. 50
Understanding the Analysis Report.................................................................................................................................. 51
Fluid Parameters..........................................................................................................................................................52-53
Section VIII- Troubleshooting
Troubleshooting ..........................................................................................................................................................54-65
Section IX - Maintenance Schedule
Maintenance Schedule...................................................................................................................................................... 66
Appendix A - Dimensional Drawings
Dimensional Drawings ................................................................................................................................................68-73
Appendix B - Technical Data
Technical Data.............................................................................................................................................................74-79

Section I - General
Quincy Compressor® - QSB/T™1
Seller warrants products of its own manufacture against
defects in workmanship and materials under normal use
and service, as follows:
QSB/T™Packaged Compressors - Twelve (12) months
from date of start-up or twenty-four (24) months from
date of shipment from the factory, whichever occurs first.
Airend on Packaged Compressors (for service at full-
load pressure below 150 psig) - Twenty-four (24)
months from date of start-up or thirty-six (36) months
from date of shipment from the factory, whichever occurs
first.
Airend on Packaged Compressors (for service at full-
load pressure at or above 150 psig) - Twelve (12)
months from date of start-up or twenty-four (24) months
from date of shipment from the factory, whichever occurs
first.
ExtendedAirend Warranty - Five (5) and ten (10) year
extended airend warranties are available. Contact factory
for details.
RemanufacturedAirend - Twelve (12) months from date
of shipment from the factory.
Parts - Ninety (90) days from date of Distributor sale or
one (1) year from date of factory shipment.
With respect to products not manufactured by Seller,
Seller will, if practical, pass along the warranty of the
original manufacturer.
Notice of the alleged defect must be given to Seller in
writing with all identifying details including serial
number, model number, type of equipment and date of
purchase, within thirty (30) days of the discovery of same
during the warranty period.
Standard Warranty
Quincy Compressor®
Industrial Screw Products
QSB/T™- Rotary Screw Air Compressors
Seller’s sole obligation on this warranty shall be, at its
option, to repair, replace or refund the purchase price of
any product or part thereof which proves to be defective.
If requested by Seller, such product or part thereof must
be promptly returned to Seller, freight collect for
inspection.
Seller warrants factory repaired or replaced parts of its
own manufacture against defects in material and
workmanship under normal use and service for ninety
(90) days or for the remainder of the warranty on the
product being repaired, whichever is longer.
This warranty shall not apply and Seller shall not be
responsible nor liable for:
a) Consequential, collateral or special losses or
damages;
b) Equipment conditions caused by fair wear and tear,
abnormal conditions of use, accident, neglect or
misuse of equipment, improper storage or damages
resulting during shipment;
c) Deviation from operating instructions,
specifications, or other special terms of sales;
d) Labor charges, loss or damage resulting from
improper operation, maintenance or repairs made
by person(s) other than Seller or Seller’s authorized
service station.
e) Improper application of product.
In no event shall Seller be liable for any claims, whether
arising from breach of contract or warranty of claims of
negligence or negligent manufacture, in excess of the
purchase price.
NOTICE!
This warranty is the sole warranty of seller. Any other warranties, expressed or implied,
including any warranties of merchantability or fitness for a particular use are hereby
excluded.

Section I - General
2Quincy Compressor® - QSB/T™
• Safety Alert Symbols
• Safety Precautions
• Spare Parts Ordering Information
• Serial/Model Identification Plate
• Model Identification
Safety Alert Symbols
WARNING!
Thissymbolidentifieshazardsorunsafepractices
which could result in personal injury, death or
substantial property damage.
CAUTION!
Identifieshazardsorunsafepracticeswhichcould
result in minor personal injury or property
damage.
NOTICE!
Identifies important installation, operation or
maintenance information which is not hazard
related.
IMPORTANT!
Throughout this manual we have identified key hazards. The following symbols identify the level of hazard
seriousness:
DANGER!
This symbol identifies immediate hazards which
will result in severe personal injury, death or
substantial property damage.
DANGER!
This symbol identifies life threatening electrical
voltage levels which will result in severe personal
injury or death. All electrical work must be
performed by a qualified electrician.
CAUTION!
This symbol identifies hot surfaces which could
result in personal injury or property damage.
DANGER!
Air from this compressor will cause severe injury or death if used for
breathing or food processing. Air used for these processes must meet
OSHA29CFR1910 or FDA21XDE178.3570 regulations.

Section I - General
Quincy Compressor® - QSB/T™3
Safety Precautions
Read this manual and follow all instructions prior to
installing or operating the compressor.
Listed below are some, but not all, safety precautions that
must be observed with compressors and compressed air
systems.
WARNING!
Failure to follow any of these precautions may
result in severe personal injury, death, property
damage and/or compressor damage.
• Air from this compressor will cause severe injury or
death if used for breathing or food processing. Air
used for these processes must meet OSHA 29 CFR
1910.134 or FDA21XDE178.3570 regulations.
• Disconnect and lockout all power supplies to the
compressor plus any remote controllers prior to
servicing the unit.
• Never assume it is safe to work on the compressor
because it is not operating. Many installations have
automatic start/stop controls and the compressor may
start at any time.
• This compressor is designed for use in the
compression of normal atmospheric air only. No
other gases, vapors or fumes should be exposed to
the compressor intake, nor processed through the
compressor.
• Relieve all pressure internal to the compressor prior
to servicing. Do not depend on check valves to hold
system pressure.
• A properly sized pressure relief valve must be
installed in the discharge piping ahead (upstream) of
any shutoff valve (block valve), heat exchanger,
orifice or any potential blockage point. Failure to
install a pressure relief valve could result in the
rupturing or explosion of some compressor
component.
• Do not change the pressure setting of the pressure
relief valve, restrict the function of the pressure relief
valve, or replace the pressure relief valve with a plug.
Over pressurization of system or compressor
components can occur, resulting in death, severe
personal injury or property damage.
• Never use plastic pipe, rubber hose, or soldered
joints in any part of the compressed air system.
Failure to ensure system compatibility with
compressor piping is dangerous.
• Never use a flammable or toxic solvent for cleaning
the air filter or any parts.
• Do not remove any guards or cabinet panels or
attempt to service any compressor part while the
compressor is operating.
• Do not operate the compressor at pressures in excess
of its rating.
• Observe control panel displays daily to ensure
compressor is operating properly.
• Follow all maintenance procedures and check all
safety devices on schedule.
• Never disconnect or tamper with the high air
temperature (HAT) sensors.
• Compressed air is dangerous, do not play with it.
• Use the correct fluid at all times.
• Do not rely on the discharge air line check valve.
• Do not override any safety or shutdown devices.
• Keep doors closed during operation. The noise level
inside cabinet exceeds 100 decibels (dBA) and the
operating temperature of some components is
sufficient to burn the skin.
NOTICE!
These instructions, precautions and descriptions
cover standard Quincy manufactured QSB/T™
Series air compressors. As a service to our
customers,weoftenmodifyorconstructpackages
tothecustomers specifications. This manual may
not be appropriate in those cases.

Section I - General
4Quincy Compressor® - QSB/T™
NOTICE!
Every effort has been taken to ensure complete
andcorrectinstructionshavebeenincludedinthis
manual, however, possible product updates and
changes may have occurred since this printing.
QuincyCompressor®reservesthe righttochange
specificationswithoutincurringanyobligationfor
equipment previously or subsequently sold. Not
responsible for typographical errors.
Spare Parts Ordering Information
Quincy Compressor®maintains replacement parts for
Quincy compressors. Aparts manual is shipped with all
new machines. Order parts from yourAuthorized Quincy
distributor. Failure to use genuine Quincy replacement
parts may void warranty.
Serial/Model Identification Plate
Reference to the machine MODEL, SERIAL NUMBER
and DATE OF ORIGINAL START-UP must be made in
all communication relative to parts orders or warranty
claim. Amodel/serial number plate is located on the
frame or in the upper right corner of the control panel
door.

Section I - General
Quincy Compressor® - QSB/T™5
MODEL IDENTIFICATION

Section II - Description
6Quincy Compressor® - QSB/T™
• General Description
• The Compression Cycle
• Air Flow
• Cooling System
• Capacity Control System
• Electrical System
• Indicators
• Gauges
General Description
The QSB/T™line of rotary screw compressors covers a
horsepower range of 15 to 50. These belt driven
compressors have standard full load pressure ratings of
100, 125 and 150 PSIG. The large, 127mm rotors allow
Quincy to operate these compressors at lower speeds than
competitive makes. While base mounting is standard, 120
and 200 gallon tank mounting is available.
The compressor is a single stage, positive displacement,
fluid-flooded rotary screw type unit, consisting of two
precision-machined rotors. The drive rotor is driven
through a v-belt arrangement.
All components are attached to a heavy-duty steel frame.
Controls and indicators are arranged on a control panel.
Acoustical cabinets are available to reduce sound levels.
The Compression Cycle
The compression cycle of a rotary screw compressor is a
continuous process from intake to discharge with no
reciprocating mechanisms starting and stopping as found
in reciprocating compressors. The compressor consists of
two rotors in constant mesh, housed in a cylinder with two
parallel adjoining bores. The male drive rotor has four
lobes that mesh with six flutes in the female rotor. All
parts are machined to exacting tolerances.
As the rotors rotate, (male-clockwise as viewed from the
power input end) air is drawn into the cylinder through
the inlet port located at the power input end. Avolume of
air is trapped as the rotor lobes pass the inlet cut off
points in the cylinders. Compression occurs as the male
rotor rolls into the female flute, progressively reducing
the space thereby raising the pressure. Compression
continues until the lobe and flute pass the discharge port.
The compressed air is then discharged into the air/fluid
reservoir. There are four complete compression cycles
for each complete rotation of the male rotor.
Compression Cycle
A) INTAKE B) COMPRESSION C) DISCHARGE
INLET PORT CYLINDER
MALE
ROTOR
FEMALE ROTOR DISCHARGE PORT

Section II - Description
Quincy Compressor® - QSB/T™7
Air Flow
When the compressor is operating, a partial vacuum is
produced at the compressor inlet. Air entering via the air
filter flows through the inlet valve into the rotor housing
where it is compressed, then discharged into the air/fluid
reservoir. Compressed air passes through the complete
system, then through a minimum pressure check valve to
the service connection.
Cooling System
Fluid Coolers
Fluid coolers may use either air or water as a cooling
medium. The following descriptions point out the major
differences between the two types of coolers.
Air-cooled Fluid Coolers
The air-cooled fluid cooler and aftercooler are finned
aluminum tube, one piece design. Ambient air is forced
through the fins by a motor driven fan, cooling the fluid
and air in the tubes. To maintain proper compressor
operation, the ambient air temperature should not exceed
the temperatures listed inAppendix B - Technical Data.
The cooler fins must be kept clean at all times. Fluid
leaving the receiver passes through a thermal mixing
valve before traveling on to the cooler. The purpose of
the thermal valve is to maintain a minimum fluid
discharge temperature at the compressor of approximately
180°F.
Water-cooled Fluid Coolers
Water-cooled fluid coolers are of the shell and tube
design. Fluid passes through the shell transferring its heat
to the water flowing through the tubes. Fluid leaving the
cooler does not pass through a thermal mixing valve as in
an air-cooled unit, but goes directly to the fluid filter and
the compressor. Fluid discharge temperature at the
compressor is maintained by a water temperature
regulating valve located in the discharge water line. The
water temperature regulating valve uses a probe to sense
fluid temperature and opens and closes, governing water
flow through the cooler.
Aftercoolers
Aftercoolers reduce the amount of water in the discharge
air. They are used to lower the temperature of the
discharge air thereby condensing water vapor from the
compressed air. This allows most of the contained water
to be trapped and expelled from the unit, reducing water
related problems downstream.
Air-cooled aftercoolers are part of the air-cooled fluid
cooler. Cooling air from the fan is blown through the
aftercooler and the fluid cooler.
Water-cooled aftercoolers are placed in series with the
fluid cooler. Incoming water is first directed through the
aftercooler and then on to the fluid cooler.
Moisture Separator
A combination moisture separator and water trap is
provided for collecting and expelling water to the
customer’s drain.

Section II - Description
8Quincy Compressor® - QSB/T™
Capacity Control System
As the motor starts driving the compressor rotors, air is
drawn in, compressed and discharged into the air/fluid
reservoir. When the air pressure in the air/fluid reservoir
exceeds the set point of the pilot valve (normally 100
PSIG), the valve opens and passes a controlled volume of
air to the inlet valve air cylinder.
NOTICE!
Other pressures are available optionally.
The air forces a piston to move within the cylinder,
closing the inlet valve. The compressor will continue to
run, matching air demand with air delivery by constantly
adjusting the position of the inlet valve. The inlet valve
regulates compressor capacity between 100% and nearly
0% of rated delivery.
When maximum pressure (typically 10 PSIG above
normal full load pressure) has been obtained in the air
system, complete compressor unloading occurs. The
pressure switch located in the control panel sends a signal
to the control and the solenoid valve opens, venting the
residual pressure from the blowdown valve. At the same
time, control air from the reservoir check valve is directed
through the solenoid to the inlet valve air cylinder. The
inlet valve is held in a closed position preventing the
intake of air into the compressor and serving as a check
valve preventing reverse air/fluid flow through the inlet
valve and air filter.
Auto Dual (Standard)
TheAuto Dual system offers two choices of controlling
the Quincy QSB/T™Compressor:
With the selector switch in the Continuous Run position,
the compressor operates continuously, matching air
demand as the differential pilot valve controls the position
of the inlet valve. When maximum system pressure is
reached, the pressure switch opens, venting the air/fluid
reservoir and, although the compressor continues to run
unloaded, no air is compressed.
WhenAuto Dual is selected, the compressor will perform
as above, however, a solid state timer is activated when
the pressure switch contacts open. This timer is
adjustable within a ten (10) minute range. When the timer
reaches the end of its delay period, the compressor will
automatically shut down and assume a standby mode.
Upon a drop in system air pressure, the pressure switch
contacts close, restarting the compressor automatically.
The timer should be set, during unit start-up, for a
minimum of six (6) minutes.
During the unloaded/timing mode, if plant pressure
should drop causing the pressure switch contacts to close,
the compressor will continue to operate, resetting the
timer and instructing the inlet valve to reopen.

Section II - Description
Quincy Compressor® - QSB/T™9
Auto Demand (Optional)
Auto Demand controls accommodate external control
signals from an optional Quincy Demand-A-Matic®
multiple compressor controller.
With the selector switch in the Local mode, the
compressor will operate as described in theAuto Dual
description.
In the Remote mode, the compressor’s control panel is
bypassed in favor of the Demand-A-Matic®multiple
compressor controller. The compressor will start, build
air, unload and shutdown on time delay as determined by
the Demand-A-Matic®controller. With slight
modifications, a compressor equipped withAuto Dual
controls may be converted to Auto Demand control.
Contact your authorized Quincy Distributor.
Lead/Lag (Optional, two machines only)
This option allows one of two different pressure control
settings to be chosen for a given machine. If the demand
is greater than one unit’s capability, the second
compressor will automatically turn itself on until the
excess demand has been satisfied. Again, working with
the standardAuto Dual control, the second machine
would time out and turn itself off after the demand
dropped.
Load/No Load (Optional)
In the Load/No Load mode, the compressor does not
modulate the inlet valve. The valve is either fully open
or it is closed. If system demands include regular periods
of air usage at less than full load, a large compressed air
storage capability is required with this type of control.
Without adequate storage, rapid cycling may occur. This
will cause wide system pressure fluctuations that may
affect the performance of equipment using the
compressed air. Load/No Load works with Auto Dual
control to turn the compressor off during extended
periods of no demand.
Electronic Control (Optional)
The QSB/T™compressor with Electronic Control utilizes
a microprocessor to control the compressor. Refer to
Section IV for operational instructions.
WARNING!
Never assume it is safe to work on a compressor
because it is not operating. It may be in standby
mode and could restart at any time. Follow all
safety instructions in Section V- Maintenance or
Service Preparation.

Section II - Description
10 Quincy Compressor® - QSB/T™
Electrical System
Electrical system diagrams are shown in the parts manual
sent with the compressor. The appropriate diagram is also
included in the control panel on all Quincy QSB/T™
compressors.
NOTICE!
Due to continuous product improvements and
updates, it is suggested that the wiring diagram
included in the control panel be used when
servicing the electrical control.
Standard drive motors are open drip proof 1800 RPM
with a maximum ambient temperature rating of 104°F.
They are not suitable for salt laden, corrosive, dirty, wet
or explosive environments.
The QSB/T™series compressors utilize 460V incoming
power through an across the line magnetic starter. A
transformer in the control panel reduces this voltage to
120 VAC for the various controls on the unit. These
controls include the selector switch, pressure switch,
timer, high air temperature safety switches, solenoid and
the various indicator lights. Other incoming line voltages
are available as options. The compressor is provided with
a NEMA 1 enclosure. Optional panels include NEMA 4.
DANGER!
High voltage could cause death or serious injury.
Disconnect all power supplies before opening or
servicing the electrical enclosure.
Safety Sensors
One high air temperature (HAT) sensor is standard on
QSB/T™units. This sensor is located in the discharge line
from the compressor to the air/fluid reservoir and protects
the unit by sensing unusually high temperatures and
shutting the unit down. The HAT sensor is set to trip at
approximately 225°F and is nonadjustable.
WARNING!
Never remove, bypass or tamper with the HAT
switch. Failureto providethissafetyfeaturecould
cause death or serious injury and property
damage. If the compressoris shutting down due
tohighdischargetemperature,contact a qualified
service technician immediately.

Section II - Description
Quincy Compressor® - QSB/T™11
Indicators
Main Power on Light
Indicates when power from the main disconnect switch
has been turned on and there is live power at the
compressor starter and control panel. This light will
remain on as long as there is power to the unit, regardless
of the position of the selector switch.
CAUTION!
Always check power supply disconnect. The
Power-on light may be inoperable.
High DischargeAir Temperature Light
Indicates when the unit has sensed an unusually high
discharge temperature.
Air/Fluid Separator Indicator
Indicates excessive pressure differential across the air/
fluid separator element. It is used to determine separator
element change intervals.
Gauges
Hourmeter
This gauge indicates actual hours of operation.
Air Pressure Gauge
This gauge indicates air pressure available for distribution
to the service line.
CAUTION!
Gaugemaynot registerwhen the unitisunloaded
or off. Make certain all air pressure is relieved
prior to servicing.
Air Outlet Temperature Gauge
This gauge indicates the temperature of the air/fluid
mixture as it discharges from the compressor. The normal
reading is 180°F-200°F.
Percent Capacity Gauge
This gauge is graduated in percent of the total capacity of
the unit. Readings taken from this gauge give an
indication of the amount of air being used.

Section III - Installation
12 Quincy Compressor® - QSB/T™
• Receiving
• Moving the Unit to the Installation Site
• Location
• Piping Connections
• Relief Valves
• Electrical
• Guards
• Manual Vent and Shutoff Valves
• Water and Sewer Facilities at the Installation
Site (Water-cooled models only)
• Compressor Rotation
• Fan Rotation
Receiving
Upon receipt, immediately inspect the compressor for any
visible damage that may have occurred during shipment.
If visible damage is found, the delivering carrier should
make a notation on the freight bill and the customer
should request a damage report. If the shipment is
accepted and damage is found later, it is classified as
concealed damage. Concealed damage should be
reported to the delivering carrier within 15 days of
delivery. The delivering carrier must prepare a damage
report. Itemized supporting papers are essential to filing
a claim.
Read the compressor nameplate to be sure the compressor
is the model and size ordered and that optionally ordered
items are included.
Check the reservoir and pressure relief valves to be sure
they are adequate for the pressure at which you intend to
operate.
Moving the Unit to the Installation Site
Forklift slots are provided in one side and one end of the
main frame. Use of chains and slings should be limited to
the main frame. Do not attempt to lift the unit by
attaching to any components. Optional lifting eyes are
available.
NOTICE!
See Appendix A and B for detailed technical
information and dimensions.
CAUTION!
Improperliftingmayresultincomponent,system
damage or personal injury. Follow good shop
practicesand safety procedureswhenmovingthe
unit.

Section III - Installation
Quincy Compressor® - QSB/T™13
Location
Locate the compressor on a level surface in a clean, well-
lit and well-ventilated area. Allow sufficient space (four
feet of clearance on all sides and top of the compressor)
for safe and proper daily inspection and maintenance.
The entire length of the frame base must be supported.
Shim where necessary but do not use wood.
WARNING!
Under no circumstances should a compressor be
installed in an area exposed to a toxic, volatile or
corrosive atmosphere, nor should toxic, volatile
orcorrosiveagentsbestorednearthecompressor.
Ambient temperature should not exceed 110°F. High
ambient temperatures may result in a high air temperature
shutdown. All models are intended for indoor
installation, however, it is possible, with certain
modifications, to accommodate some outdoor locations.
Cabinet models are water-resistant but not water tight.
Sheltering from rain, snow and freezing temperatures is
mandatory.
WARNING!
Do not operate in temperatures below 32°F or
abovethelimits outlinedinAppendixB-Technical
Data.
Do not locate the unit where the hot exhaust air from
other compressors or heat generating equipment may be
drawn into the unit. Never restrict the flow of exhaust air
from the fluid cooler or cooling fan. Heated exhaust air
must be exhausted outside to prevent high temperature
conditions in the compressor room. If the room is not
properly ventilated, compressor operating temperatures
will increase and cause a high temperature shutdown.
CAUTION!
Clean,freshair, of sufficientquantity, isrequired
for proper compressor operation.
In high humidity areas, avoid placing the compressor in a
basement or other damp locations. Control the
compressor temperatures and monitor compressor fluid
for signs of water contamination. Fluid and filter changes
may need to be increased in high humidity areas.
Increased operating temperatures may be required.
CAUTION!
Removalormodificationof soundinsulationcould
result in dangerously high sound levels.
Quincy QSB/T™compressors are essentially vibration
free, however, some customers may choose to bolt the
unit to the floor to prevent the accidental breakage of
piping or electrical connections as a result of being
bumped. Use only lag bolts to secure the unit. Do not
pull the bolts down tight. Overtightening the lag bolts
may place the frame in a twist or bind causing breakage of
fluid coolers, piping and reservoirs.
WARNING!
Removal or painting oversafety labels will result
in uninformed conditions. This could result in
personal injury or property damage. Warning
signs and labels shall be provided with enough
light to read, conspicuously located and
maintained for legibility. Do not remove any
warning, caution or instructional material
attached.

Section III - Installation
14 Quincy Compressor® - QSB/T™
Piping Connections
Never join pipes or fittings by soldering. Lead-tin solders
have low strength, a low creep limit, and may, depending
on the alloy, start melting at 360°F. Silver soldering and
hard soldering are forms of brazing and should not be
confused with lead-tin soldering. Never use plastic, PVC,
ABS pipe or rubber hose in a compressed air system.
Piping Fit-up
Care must be taken to avoid assembling the piping in a
strain with the compressor. Piping should line up without
having to be sprung or twisted into position. Adequate
expansion loops or bends should be installed to prevent
undue stress at the compressor resulting from the changes
between hot and cold conditions. Pipe supports should be
mounted independently of the compressor and anchored,
as necessary, to limit vibration and prevent expansion
strains. Piping should never be of smaller size than the
connection on the compressor unit.
Relief Valves
Pressure relief valves are sized to protect the system.
Never change the pressure setting or tamper with the
valve. Only the relief valve manufacturer or an approved
representative is qualified to make such a change.
DANGER!
Relief valves are to protect system integrity in
accordance with ANSI/ASME B19 safety
standards. Failuretoprovideproperlysizedrelief
valves will result in death or serious injury.
Relief valves are to be placed ahead of any potential
blockage point that includes, but is not limited to, such
components as shutoff valves, heat exchangers and
discharge silencers. Ideally, the relief valve should be
threaded directly into the pressure point it is sensing, not
connected with tubing or pipe and pointed away from any
personnel. Always direct discharge from relief valves to a
safe area away from personnel.
Relief Valve
Pressure Vessels
Air receiver tanks should be in accordance withASME
Boiler and Pressure Vessel Code Section VIII.
CAUTION!
ASME coded pressure vessels must not be
modified,welded,repaired,reworkedorsubjected
to operating conditions outside the nameplate
ratings. Such actions will negate code status,
affect insurance status and may cause death,
serious injury and property damage.

Section III - Installation
Quincy Compressor® - QSB/T™15
Electrical
Before installation, the electrical supply should be
checked for adequate wire size and capacity. During
installation, a suitable fused disconnect switch or circuit
breaker should be provided. Any unreasonable voltage
unbalance (5%) between the legs must be eliminated and
any low voltage corrected to prevent excessive current
draw. The installation, electric motor, wiring and all
electrical controls must be in accordance with National
Electric Code, and all state and local codes. A qualified
electrician should perform all electrical work. Air
compressors must be grounded in accordance with
applicable codes. See control panel for the proper wiring
diagram.
Quincy would like to emphasize the importance of
providing adequate grounding for air compressors. The
common practice of grounding units to building structural
steel may not actually provide adequate grounding
protection, as paint and corrosion buildup may exist.
CAUTION!
NEMAelectricalenclosuresandcomponents must
be appropriate to the area in which they are
installed.
Pneumatic Circuit Breakers orVelocity Fuses
The Occupational Safety and HealthAct, Section
1926.303 Paragraph 7 published in Code of Federal
Regulations 29 CFR 1920.1 (revised 07/01/1982), states
“all hoses exceeding 1/2” inside diameter shall have a
safety device at the source of supply or branch line to
reduce pressure in case of a hose failure.” These
pneumatic safety devices are designed to prevent hoses
from whipping, which could result in a serious or fatal
accident.
Guards
All mechanical action or motion is hazardous in varying
degrees and needs to be guarded. Guarding shall comply
with OSHA Safety and Health Standards 29 CFR
1910.219 in OSHA manual 2206 (revised 11/07/1978)
and any state or local codes.
WARNING!
Cabinetpanelsanddriveguardsmustbefastened
in place before starting the machine and never
removedbeforelockout/tagoutof the mainpower
supply.
Manual Vent and Shutoff Valve
Install a manual valve to vent the compressor and the
compressor discharge line to atmosphere. If the air receiver tank
services a single compressor, the manual valve can be installed
in the receiver. When a manual shutoff valve (block valve) is
used, a manual valve should be installed upstream from the
valve, and a pressure relief valve installed upstream from the
manual vent valve. These valves are to be designed and
installed to permit maintenance to be performed in a safe
manner. Never substitute a check valve for a manual shutoff
valve (block valve) if the purpose is to isolate the compressor
from a system for servicing.
WARNING!
Relieve compressor and system air pressure by
openingtheappropriatemanual reliefvalveprior
toservicing. Failuretorelieveallsystempressure
could result in death or serious injury and
property damage.

Section III - Installation
16 Quincy Compressor® - QSB/T™
Water and Sewer Facilities at the Installation Site
(Water-cooled models only)
Make sure the water supply is connected and open.
Piping supplied by the user should be at least equal to the
connections provided on the compressor. Sewer facilities
should be readily accessible to the installation site and
meet all the requirements of local sewer codes, plus those
of the compressor. Make sure water inlet and discharge
connections are correct.
NOTICE!
Thewatertemperatureregulatingvalve is located
in the discharge water line.
Clean air is essential for your Quincy QSB/T™
compressor. Always select a source providing the
cleanest air possible. When an outside air source is used,
keep all piping as short and direct as possible. Use
vibration isolators and support all piping correctly.
Piping size should be at least as large as the inlet valve
opening and increased several sizes for extremely long
piping runs. The piping must be leak free and clean after
fabrication.
Compressor Rotation
Compressor rotation must be checked prior to start-up.
Proper rotation is clockwise (as viewed from the power-
input end). The power-input end of the compressor is
marked with an arrow noting the proper rotation.
Operating the compressor in incorrect rotation will result
in extreme damage to the compressor and warranty
coverage will be voided. To check for proper rotation,
jog the starter button, allowing the motor to turn 2 or 3
revolutions. Observe the drive element for correct
direction. If incorrect rotation is observed, lock out
power supply, reverse electrical leads L1and L3at the
motor starter. Recheck for correct rotation.
Fan Rotation
Check the fan rotation at the same time the compressor
rotation is being checked. Fan airflow should be outward,
that is, pushing the air through the coolers on air-cooled
units or out of the cabinet on water-cooled units with
cabinets.