Grundfos E1272 User manual

MINI-VACUUM SYSTEM
50 GPM
USERS MANUAL &ASSEMBLY INSTRUCTIONS
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Master-Lee Engineered Products Inc.
Latrobe, PA 15650 [phone] Fax: [phone]
MASTER-LEE ENGINEERED PRODUCTS,INC.

Mini-Vac Assembly Instructions & Users Manual 1
TABLE OF CONTENTS
INTRODUCTION PAGE 3
DESCRIPTION PAGE 3-5
TOOLING PAGE 6
ASSEMBLY INSTRUCTIONS PAGE 6
TOOL DELIVERY PAGE 6
OPERATING INSTRUCTIONS PAGE 6-9

Mini-Vac Assembly Instructions & Users Manual 2
INTRODUCTION
The Master-Lee Engineered Products (MLEP) Mini-Vacuum System is an excellent tool
for remote underwater work requiring the removal of small debris. With its small size
and light weight, this system desirable to the customer that needs a quick response time to
emergency underwater FME events.
DESCRIPTION
Assembly and maintenance of the Mini-Vacuum System is simple and requires no
additional tooling. Designed to last in a corrosive environment, the Mini-Vacuum's main
components are made of stainless steel and aluminum.
The 50GPM Mini-Vacuum System includes:
Filter & Pump/Motor Housings
Submersible Pump & Motor Assembly
Voltage Converter / Variable Frequency Drive (VFD)
QTY-3: 30 Ft Hose Assemblies
Straight Nozzle
100' power cord
QTY-3: 10' J-Lock Center Mast Sections
5' J-Lock Bail Section
Handrail Hoist
Filter lid actuator Valve/Regulator Assembly w/twin path air hose.
Filter handling tool with Valve/Regulator Assembly and single path air hose.
General Highlights:
17" X 24" foot print and 42" tall
< 150 LBS
115 or 230V – 48-62 Hz Power Input
Adjustable flow (50 GPM max.)
275LBS capacity handrail mounted hoist with 65' hoist cable
Uses standard Tri-Nuclear Filters
Fault Protection

Mini-Vac Assembly Instructions & Users Manual 3
CONTROLLER (VFD)
The system is operated by a Grundfos Redi-FloTM
Variable Frequency Drive controller. The controller
converts an input power source (single phase 115-
230V) to an output of three-phase 230V. The
controller is enclosed in a durable carrying case and
includes a 6 ft. power cord and a receptacle for
connection to the underwater pump.
The system incorporates several fault protection
devices and indicators which are displayed on the
controller front panel. These include: over temperature, under voltage, over voltage,
motor overload, variable frequency drive overload, ground fault, over current, and many
more features.
From the front panel of the controller, the operator can adjust the flow rate of the pump
from 0 GPM flow to a maximum of 50 GPM.
CAUTION: EVERY EFFORT SHOULD BE MADE TO ENSURE THAT THE
CONTROLLER IS KEPT CLEAN AND DRY.
PUMP &MOTOR ASSEMBLY
The Grundfos Redi-Flo™ is a reliable variable
frequency drive motor coupled to a Grundfos
Submersible pump to produce up to a 50 GPM flow
rate. Using a 100 ft. waterproof cable with Sea-Con
connector, the 230V three-phase motor/pump creates a
suction effect to accomplish your underwater
vacuuming task. Any material less than 1/2” diameter
can easily be captured with this system. The Pump and
Motor Assembly comes complete as a quick-change
replaceable unit. Paired with the MLEP J-Lock Pole
System this unit can be changed out remotely
underwater without having to remove the entire
System.
CAUTION:
THE PUMP AND MOTOR ASSEMBLY
SHALL NEVER BE OPERATED WHEN NOT
INSTALLED IN ITS MOTOR HOUSING.
THE PUMP AND MOTOR ASSEMBLY SHALL NEVER BE OPERATED
WITHOUT A FILTER INSTALLED IN THE SYSTEM

Mini-Vac Assembly Instructions & Users Manual 4
FILTER HOUSING
The Master-Lee Mini-Vacuum system
incorporates a suction process to pull water
and debris through the single pass filter.
The stainless steel canister housing (6.375"
ID X 30.375 L) uses a positive closing lid
to hold commonly available filters (1, 3, 5,
10 micron). The canister lid assembly
incorporates a pneumatic clamp
mechanism to open and close the lid.
Coupled to the canister housing via an
intermediate flow tube is the Pump and
Motor Housing which holds the Pump and Motor Assembly.
Also, incorporated into the bottom of the housing is a drain valve that can be operated
remotely using a standard MLEP J-Lock pole. The Valve has a high visibility red tab to
indicate the open and closed positions.
HANDRAIL MOUNTED HOIST
The entire pump and filter system weighs approximately
150LBS (in air). To assist the operator in lowering,
raising, and staging the vacuum, a handrail mounted
manual winch is incorporated. The winch is
conservatively rated at 275 LBS load capacity.
For safety to the operator, this heavy duty winch uses an
automatic, load-actuated, fail safe braking system which
will hold the rated load when the operator releases the
handle.
CAUTION: AVOID SHOCK LOADS - DO NOT EXCEED THE 275 LB LOAD
RATING - MAINTAIN A MINIMUM OF THREE FULL TURNS ON THE DRUM AT
ALL TIMES

Mini-Vac Assembly Instructions & Users Manual 5
REQUIRED TOOLS FOR ASSEMBLY
None
ASSEMBLY INSTRUCTIONS
The main components of the Mini-Vacuum System are shipped in a fully assembled
condition. All the suction hose sections are equipped with locking, quick-connect
couplings. When assembling the hose sections, make sure the locking tabs snap into
place to make a secure connection. It is not recommended that more than three sections
of hose (approximately 100”) be used at a time. This will decrease the performance of
the system. Refer to the Tool Check-out & Assembly part of the Operating Instructions
for the assembly sequence.
TOOL DELIVERY
The Mini-Vacuum System comes with a handrail mounted hoist for manual lifting and
lowering of the system in the water. Standard Master-Lee J-Lock poles are used to
control assorted vacuum wands and nozzles for an effective underwater cleaning
campaign.
OPERATING INSTRUCTIONS
CAUTION:
MLEP Mini-Vacuume System must always be operated in a vertical position.
Running the Pump/Motor in air for more than 10 seconds may cause permanent
damage.
Large items greater than 1/2" diameter, or a length which prevents that material
from passing through a bend in the hose, should be vacuumed using a screened
nozzle or removed in another manner.
1.0 TOOL CHECK-OUTS & ASSEMBLY:
1.1 Ensure tool is configured properly and that all fasteners are securely tightened.
1.2 Install Pump and Motor Assembly into Pump housing. The Pump and Motor
Assembly should be fully seated on the flange O-ring and should hang plumb.

Mini-Vac Assembly Instructions & Users Manual 6
1.3 Place the drain valve in the “open” position.
1.4 Connect the supplied twin-path air hose to the Lid Clamp Cylinder fittings.
NOTE: The fittings are “Push-In” style. To reduce the risk of hose pullout fasten a small
wire- tie between the body of the fitting and the sliding collar after the hose has been
inserted.
CAUTION
The Lid Clamp Cylinder actuates quickly. PRIOR to connecting to any air supply, make
sure hands and fingers are clear of the lid to avoid injury.
1.5 Connect the opposite end of each air hose to its respective valve locations.
1.6 Connect “house air supply” to the supplied Valve Regulator Assembly and
adjust the regulator to 85-95 psi.
1.7 Actuate the valve ensuring the cylinder actuates accordingly. If cylinder does
not actuate, check connections and repeat steps 1.4-1.6.
1.8 Connect the supplied 100 ft long power cable to the Pump and Motor
Assembly's bulkhead connection by inserting the male end into the keyed
female end and tightening down the threaded collar until snug.
1.9 Connect the other end of the power cable to the supplied Variable Frequency
controller by aligning the male and female connectors and their keyways and
snap over the locking tab.
1.10 Attach the desired length of suction hose to top of the CLOSED filter lid and
snap over the locking cam-and-groove fittings.
1.11 Attach the tool to the rail platform lift rig
1.12 While maintaining air pressure, lower the tool into the water until it is
completely submerged to ensure that there are no air leaks before lowering the
tool to working depth.
1.13 Attach vacuum hose end-effector of choice to the end of the hose using the
locking cam-and-groove fittings.
1.14 Install the Articulating Wrist onto the hose end-effector and orient as desired.
1.15 Attach the wrist to the Master-Lee J-Lock poles.
1.16 The tool is now ready to be lowered to working depth.

Mini-Vac Assembly Instructions & Users Manual 7
2.0 TOOL OPERATION
2.1 Using the Handrail Hoist, operate the winch to lower the mini-vacuum into
position.
NOTE: Once system is completely submerged close the drain valve located on the
bottom between the two tanks, using the supplied MLEP J-lock Mast Section. The valve
should be turned clockwise (CW).
2.2 Plug in VFD controller to an appropriate power supply. The readout will
illuminate.
2.3 On the Controller, verify that the REDIFL4 mode is activated. Screen should
display the following.
If display is not as shown, refer to Grundfos Instruction Manual.
2.4 To start the motor, Press the FWD Key and adjust the speed using the up and
down arrow keys on the control pad. (The max "speed" of the motor is when
MOTORVOLTS reads approximately 230V on the display)
NOTE: MLEP testing indicated flow rates of approximately 50 GPM at max Voltage of
230V
2.5 When vacuuming is finished, press the STOP key.
2.6 If removing from the cavity, open the drain valve (1/4 turn counter clockwise-
CCW). This operation can be completed using the MLEP J-lock poles).
3.0 MAINTENANCE:
3.1 PUMP/MOTOR: Before each use, the component should be visually inspected
for abuse, worn/broken cable, secured bolts and screws, and pump and motor
flange o-ring shall be inspected.
NOTE: If necessary, the pump and motor assembly can be changed out remotely using
the MLEP J-lock mast sections. The female J-lock end located on the Pump and Motor
Assembly is spring loaded for this purpose. Insert the mast end into the J-Lock socket,
push down, and rotate CCW until it stops. Allow the spring to push the mast up and lock
into the Pump and Motor Assembly. The Pump and Motor Assembly can now be lifted
out of the Filter Housing.
DIAG STOP LOCAL
SPE
MOTOR VOLTS 0.0V
MOTOR CURR 0.0A
MOTOR FREQ 0.00Hz
PROG 0.00r MAIN

Mini-Vac Assembly Instructions & Users Manual 8
3.2 FILTER AND MOTOR HOUSING: Before each use, the component should be
visually inspected for abuse, secured bolts and screws, condition of canister lid
actuator mechanism, and lid o-ring.
3.3 CONTROLLER: Before each use, the component should be visually inspected
for abuse, worn/broken cables, or broken plugs.
3.4 FILTER: Filter Changes are initiated for two primary reasons:
1. Radiation (dose) levels from debris collected
2. Minimal suction/flow due to filter saturated with debris
NOTE: Disconnect the power source to the controller to ensure the motor/pump can not
be energized before removing or changing filters.
3.5 WINCH: The winch on the Handrail Hoist is a sealed mechanism and requires
no maintenance.