This is the safety alert symbol. When you see this
symbol on your pump or in this manual, look for one of
the following signal words and be alert to the potential
for personal injury:
DANGER warns about hazards that will cause serious
personal injury, death or major property damage if
ignored.
WARNING warns about hazards that can cause serious
personal injury, death or major property damage if
ignored.
CAUTION warns about hazards that will or can cause
minor personal injury or property damage if ignored.
ELECTRICAL SAFETY
WARNING
Hazardous voltage.
Can shock, burn, or
cause death.
Ground pump before
connecting to power
supply.
3-wire, grounding type cord. Do not allow any part of
cord or receptacle ends to sit in water or damp
locations.
Unplug pump before servicing.
Burn Hazard. Do not touch an oper-
ating motor. Modern motors can operate at high
temperatures. To avoid burns when servicing pump,
allow it to cool for 20 minutes after shut-down before
handling.
Follow local and/or national plumbing and electrical
codes when installing.
pump with discharge shutoff, as hose may burst or
pump may be damaged due to high temperatures.
California Proposition 65 Warning
contain chemicals known to the State of California to
cause cancer, birth defects or other reproductive harm.
Hazardous Pressure. DO NOT run the
This product and related accessories
Some models of
pump are supplied with
3-connector grounding
type cord. Connect only to
properly grounded,
GFCI protected outlet. Do
not lift pump by electrical
cord.
Pump is nonsubmersible. Keep motor
dry at all times. Do not
wash motor. Do not
immerse. Protect motor
from wet weather.
If using extension
cord, use only UL
approved indoor/outdoor,
The word NOTICE indicates special instructions which
are important but not related to hazards.
GENERAL SAFETY
To avoid risk of serious bodily injury and property
damage, read safety instructions carefully before
installing pump.
Do not allow pump or any system component to freeze.
To do so may damage system and void warranty.
Risk of electric shock. To avoid fatal
shocks, proceed as follows if pump needs servicing.
A. Disconnect power to pump outlet box before pul-
ling pump cord plug. After plug is pulled, let pump
cool for 20 minutes before attempting to work on it.
B. Take extreme care when changing fuses. To
re-duced chance of fatal electrical shocks, DO NOT
stand in water or put your finger in the fuse socket.
C. Ground electrical outlet box.
D. Use only Ground Fault Circuit Interrupter (GFCI)
protected grounded outlet for cord plug.
Never run pump dry. To do so can damage internal
parts, overheat pump (which can cause burns to people
handling or servicing pump), and will void warranty!
Do not pump chemicals or corrosive liquids with pump.
A. Use high pressure reinforced type discharge
hose ONLY. See parts list for available hose, nozzle
and fittings. A high pressure relief valve is recommended.
B. DO NOT use garden hose with H.P. Booster
pump! Garden hose will not stand the discharge
pressure produced and will fail!
C. High pressure discharge stream is dangerous! To
avoid injury, DO NOT aim the discharge stream at
any person or animal.
D. BE SURE pump suction pipe pressure plus pump
discharge pressure does not exceed pressure
rating of hose and fittings! See Table I for pump
discharge pressure ratings.
Hazardous Pressure.
2
INSPECT THE SHIPMENT
The high pressure booster pump has been carefully
inspected and packaged to assure safe delivery.
Inspect the pump and fittings and report to the carrier
any items which are damaged or missing.
INSTALLATION
The pump is designed to boost city water pressure or
water pressure from a private water system. Use this
high pressure stream to wash down milk parlors, barns,
garages and driveways, or for fire protection.
The pump is portable with a convenient carrying
handle. If an existing pressure water system is to
be used as a water supply, it can be connected with
available fittings and 1” or 1-1/4” high pressure hose
to the pump inlet. A special heavy duty 1” or 1-1/4”
suction hose with fittings is available as an accessory.
If the pump is permanently mounted on wall, use a 1”
or 1-1/4” pipe or heavy-duty hose for the suction line.
20 GPM models require a 1-1/4” discharge hose to
reduce friction losses.
TABLE I - DISCHARGE PRESSURE
Discharge Discharge
No. of Pressure PSI Pressure PSI
GPM HP Stages at Rated Flow at No Flow
*For total discharge pressure, add this pressure to suction
pipe pressure. For example, an MGP7C pump taking suction from
a 100 psi water service line will produce 130 + 100 = 230 psi total
discharge pressure at 0 GPM flow. If suction pressure drops to 50
psi, discharge pressure will drop to 180 psi.
Limited Warranty
BERKELEY warrants to the original consumer purchaser (“Purchaser” or “You”) of the products listed below, that they will be free from defects in material
and workmanship for the Warranty Period shown below.
ProductWarranty Period
Water Systems:
Water Systems Products — jet pumps, small centrifugal pumps, submersible pumps and related
accessories
Pro-Source™ Composite Tanks5 years from date of original installation
Pro-Source™ Steel Pressure Tanks5 years from date of original installation
Pro-Source™ Epoxy-Lined Tanks3 years from date of original installation
Our limited warranty will not apply to any product that, in our sole judgement, has been subject to negligence, misapplication, improper installation, or
improper maintenance. Without limiting the foregoing, operating a three phase motor with single phase power through a phase converter will void the
warranty. Note also that three phase motors must be protected by three-leg, ambient compensated, extra-quick trip overload relays of the recommended
size or the warranty is void.
Your only remedy, and BERKELEY’s only duty, is that BERKELEY repair or replace defective products (at BERKELEY’s choice). You must pay all labor
and shipping charges associated with this warranty and must request warranty service through the installing dealer as soon as a problem is discovered.
No request for service will be accepted if received after the Warranty Period has expired. This warranty is not transferable.
BERKELEY SHALL NOT BE LIABLE FOR ANY CONSEQUENTIAL, INCIDENTAL, OR CONTINGENT DAMAGES WHATSOEVER.
THE FOREGOING LIMITED WARRANTIES ARE EXCLUSIVE AND IN LIEU OF ALL OTHER EXPRESS AND IMPLIED WARRANTIES, INCLUDING
BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE FOREGOING LIMITED
WARRANTIES SHALL NOT EXTEND BEYOND THE DURATION PROVIDED HEREIN.
Some states do not allow the exclusion or limitation of incidental or consequential damages or limitations on the duration of an implied warranty, so the
above limitations or exclusions may not apply to You. This warranty gives You specific legal rights and You may also have other rights which vary from
state to state.
This Limited Warranty is effective June 1, 2011 and replaces all undated warranties and warranties dated before June 1, 2011.
whichever occurs first:
12 months from date of original installation, or
18 months from date of manufacture
12 months from date of original installation, or
18 months from date of manufacture
12 months from date of original installation, or
24 months from date of manufacture
12 months from date of original installation, or
24 months from date of manufacture
In the U.S.: BERKELEY, 293 Wright St., Delavan, WI 53115
In Canada: 269 Trillium Dr., Kitchener, Ontario N2G 4W5
3
HIGH PRESSURE BOOSTER PUMP
Priming Plug
From pressurized
INSTALLATION INSTRUCTIONS
These instructions cover high pressure booster pump
installations as shown below:
To Power
Service Line
Gate Valve or Hose Bibb
Male Pipe to Male Hose Adapter
house service
Suction
Figure 1 – Connection to house service.
Water tank
or reservoir
Suction
Discharge
Discharge
High Pressure Hose with two
Female Connections
Male Pipe to Male Hose Adapter
Male Pipe to Male Hose Adapter
Female Hose Connection
(Suction)
(Discharge)
Gun Nozzle
Weeping Type ONLY
High Pressure Hose
Figure 4 – Wall mounted to pressurized
service line.
1209 0894
Figure 2 – Connection to water reservoir.
Figure 3 – Cistern or shallow well installation.
Water Supply
Tee
Foot Valve
90 Elbow
Male Pipe to Male Hose Adapter
Female Hose Connection
15 Feet
Maximum
High Pressure
Hose
Gun Nozzle
Weeping Type ONLY
Male Hose
Connection
To reduce friction losses to a minimum, inlet (suction)
line should be short and have as few elbows as
possible.
Size inlet according to the chart below:
Recommended Recommended
Ave. Threaded Inlet Discharge
GPM Inlet Size Line Size Line Size
An inlet strainer will prevent suspended debris from
clogging pump.
The internal running surfaces of the pump and seals
require water lubrication for good, consistent operation.
Allowing pump to run dry will severely damage
pump and seals.
Install a pressure gauge in pump inlet line. Keep at
least two pounds per square inch pressure (2 PSI)
in inlet line whenever pump is operating. If this is not
possible, consult customer service representative.
4
Disconnect power before working on
pump, motor, pressure switch, or wiring.
THE MOTOR IS SET FOR 230 VOLTS
WHEN SHIPPED.*
To change the motor to use 115 volts:
1. Turn off power
2. Remove the back motor cover.
3. Use a screwdriver or 1/2” wrench and turn the
voltage selector dial counterclockwise until 115
shows in the dial opening.
4. Reinstall the motor cover.
ELECTRICAL
Ground motor before connecting to electrical
power supply.
Failure to ground motor can cause severe or
fatal electrical shock hazard.
Explosion hazard. Do not ground to a gas
supply line.
To avoid dangerous or fatal electrical shock,
turn OFF power to motor before working on
electrical connections.
Supply voltage must be within ±10% of
nameplate voltage. Incorrect voltage can
cause fire or serious damage to motor and voids
warranty. If in doubt consult a licensed electrician.
Use wire size specified in Wiring Chart (Table II,
Page 6). If possible, connect pump to a
separate branch circuit with no other appliances on it.
Wire motor according to diagram on motor
nameplate. If nameplate diagram differs from
diagrams above, follow nameplate diagram.
For All 3-phase Motors: Follow the wiring
diagram on the motor junction box or on the
motor nameplate.
Figure 5: Changing the Voltage Setting.
Figure 6: Motor Set for 115 Volt Operation.
* Models with power cords are pre-wired for 115 volts.
This includes models MGP7C and MGP7D.
WIRING CONNECTIONS
1. Install, ground, wire and maintain this pump in
compliance with the National Electrical Code (NEC)
or the Canadian Electrical Code (CEC) and with all
local codes and ordinances that apply. Consult your
local building inspector for local information.
2. Make sure that the voltage, frequency and phase
(single phase or three phase) of the power supply
agree with that stamped on the motor nameplate. If
in doubt, check with the power company.
3. Some models are equipped with three phase
motors. Three phase motors require magnetic
starters and can run in either direction, depending
on how they are connected to the power supply.
NOTICE: Dual voltage motors without cords are factory
wired for 230 volts. If necessary, reconnect the motor
for 115 volts, as shown. All cord connected motors are
wired for 115 volts (see Page 6). Do not alter the wiring
in single voltage motors.
Install, ground, wire, and maintain your pump in
comliance with the National Electrical Code (NEC) or
the Canadian Electrical Code (CEC), as applicable, and
with all local codes and ordinances that apply. Consult
your local building inspector for code information.
NOTICE: Clamp the power cable to prevent strain on
the terminal screws.
NOTICE: Your Motor Terminal Board (under the
motor end cover) looks like the board shown at
left. Do not change motor wiring if line voltage is
230 volts. Connect power supply as shown for your
supply voltage.
5
To Check For Proper Rotation – 3 Phase Motors
Risk of electrical shock.
1. Be sure power is disconnected to motor when
working on electrical connections.
2. Remove the motor end cover, exposing motor shaft.
Momentarily start pump. If hookup is correct, the
shaft will rotate clockwise.
3. If rotation is not clockwise, reverse any two leads to
the starter. The rotation will now be correct.
GROUNDING THE MOTOR
Ground the pump permanently using a wire of size and
type specified by local or National Electrical Code.
Models with a factory installed cord and plug:
Risk of electric shock. This equipment
is only for use on 115V and is equipped with an
approved 3-conductor cord and 3-prong, groundingtype plug. To reduce the risk of electric shock, be
certain that it is connected to a properly grounded,
grounding-type receptacle. Do not modify or remove
the plug. Make sure the pump circuit meets the
National Electrical Code. To avoid a dangerous
electrical shock hazard, keep the cord dry at all times.
Models without a cord or plug:
1. Connect ground wire first. Connect the ground wire to
the green grounding terminal provided under motor
canopy (see Figure 5) identified as GRD. Make the
ground connection to this terminal. Do not connect
the motor to an electrical power supply until the unit
is permanently grounded; otherwise a serious or fatal
electrical shock hazard may be caused.
2. For the best ground connection, connect to a
grounded lead in the service panel or to a metal
underground water pipe or well casing at least 10 ft.
long. If a plastic pipe or insulated fittings are used,
run the ground wire directly to the metal well casing
or use a ground electrode furnished by the power
company.
LUBRICATION
It is not necessary to lubricate the pump or the motor.
The motor is equipped with sealed ball bearings,
lubricated for the life of the bearing. The mechanical
shaft seal in the pump is self-lubricating and requires
no adjustment. Disassemble the pump to replace the
seal (See “Maintenance”, Pages 7 and 8).
OPERATION
NOTICE: Observe the following precautions when
operating the pump:
1. Keep the motor dry! Do not direct the stream from
pump discharge onto the motor!
2.
pump with the discharge shutoff, as the hose may
burst or the pump may be damaged due to high
temperatures.
3. Do not use a standard trigger gun with this pump.
Use only trigger guns with an automatic weeping
feature. These are available as accessories and are
provided with three nozzles. The smallest nozzle
restricts the flow, allowing use of a smaller water
source. The two larger nozzles are used if the water
source will supply the pump’s full capacity.
4. Do not run the pump dry; to do so may damage the
seal.
5. To avoid internal damage to the pump, Do not
operate with water at temperatures above 175
degrees F.
Hazardous pressure. Do not run the
TABLE II - RECOMMENDED FUSING AND WIRING
For 115/230 volt, 1-phase and 230/460 volt, 3-phase. For 575 volt installations, consult a licensed electrician.
or cause death. Disconnect power to pump before
servicing.
Tools required:
1. 7/16" open end wrench (2 required).
2. Flat blade screwdriver with insulated handle.
3. Work bench with vise recommended.
4. Pliers or similar tool.
5. Pipe wrench.
Impeller Stack Changeout (See Figure 7)
Remove pump from service and mount vertically in
vise (if available) motor side down. Hold at center of
motor. It may be desirable to wrap motor with a shop
rag to protect outside surface.
Proceed as follows:
1. Attach pipe wrench to flats on discharge connection
and turn clockwise to remove (left hand threads).
2. Remove screws holding motor canopy and remove
canopy. Pull straight off as shown. Leave switch
wires attached (if present).
ous. To discharge capacitor, hold insulated handle
screwdriver by the handle and short capacitor term-
Capacitor voltage may be hazard-
inals together. Do not touch metal screwdriver blade
or capacitor terminals.
3. Unscrew overload and move it aside. Do not
disconnect wires. Slide 7/16" open end wrench in
behind spring loaded centrifugal switch as shown.
Place on motor shaft flats to hold shaft stationary.
4. With one 7/16" wrench in place on motor shaft,
place second wrench on shaft hex at pump end and
unscrew impeller stack by turning counter-clockwise.
5. Once loose from motor shaft, hold shaft by snap
ring using a pliers or similar tool, and pull stack
from shell. You may have to apply a back and forth
motion to break stack loose from shell.
To assemble with replacement impeller stack, keep
pump in the vertical position, motor down, and reverse
instructions 1 through 5.
Assembly hints:
A. Apply a soapy water solution to suction and
discharge O-Rings to ease seating of shell.
B. Make sure mechanical shaft seal spring is in
proper position on motor shaft.
C. On three-phase models, apply Loctite No. 271 to
motor shaft threads before reinstalling stack.
Discharge
1
Connection
See View A-A
3
2
Remove with
clockwise
rotation.
Remove with
Counter-clockwise
4
3
rotation.
Centrifugal
Switch
Snap
Ring
Impeller
Stack
5
Torque discharge
connection to 80 - 100 ft-lbs
at reassembly
7/16" Open
End Wrench
Overload Protector
(Moved for access)
Capacitor
Motor end view with
Disconnect from
power source.
A
Motor Canopy
canopy removed
7 / 16
View A-A
Overload screw
(remove)
Figure 7 – Impeller stack changeout.
1211 0605
7
Mechanical Seal Changeout
7
(refer to Figures 7 and 8)
This procedure is best completed with the pump held in
a vertical position, motor down.
First complete “Disassembly” instructions 1 through
5 under “Impeller Stack Changeout.” (see Figure 7).
6. Remove 4 capscrews holding pump body to motor.
Pump handle will come off with top capscrews.
7. Unscrew pump shell from pump body, turning
clockwise (left hand threads).
8. Remove mechanical shaft seal spring and rotating
half from motor shaft. Use care not to scratch motor
shaft when removing rotating half.
9. Remove pump body from motor and place on flat
surface, face down. Again, use care not to scratch
motor shaft.
10. Use a screwdriver to push ceramic seat out from
seal cavity as shown.
11. Installation of ceramic seat:
A. Turn pump body over so seal cavity is up; clean
cavity thoroughly.
B. Clean polished surface of ceramic seat with a
clean cloth.
C. Lubricate outside rubber surface of seat with
soapy water. Place cardboard washer over
polished face of seat and press into seal cavity
using a 3/4" socket or a piece of 3/4" standard
pipe.
D. Be sure polished surface of seat is free of
dirt and has not been damaged by insertion.
Re-move excess soapy water. Dispose of cardboard washer.
12. Installation of rotating half and spring:
A. Reinstall pump body on motor using extreme
caution not to hit ceramic portion of seal on
motor shaft. Reattach pump body to motor using
capscrews. Be sure to reinstall pump handle at
this time.
B. Inspect shaft to make sure that it is clean.
C. Clean face of rotating half of seal with a clean
cloth.
D. Lubricate inside diameter of rotating half with
soapy water and slide onto motor shaft (sealing
face first).
E. Place spring over motor shaft so it rests on
rotating half.
13. To complete reassembly from this point, reverse
instructions 1 through 5 under “Impeller Stack
Changeout.”
NOTICE: Lubricate suction and discharge O-Rings
with soapy water for easier installation of shell.
8
Rotating Half
of Mechanical
Seal
Remove shell;
turn clockwise.
10
9
Remove
Pump Body
Push ceramic
seat out of
pump body
Rotating
Half
12
11
3/4" pipe or
3/4" socket
with extender
Cardboard
washer (supplied
w/seal)
Polished
Face
6
Ceramic Seat
Torque bolts to
15-27 ft-lbs
during
reassembly.
Figure 8 – Mechanical seal changeout.
8
1
11
1206 0894 BE
2
3
4
5
6
10
7
THE FOLLOWING ACCESSORIES MAY BE
ORDERED FOR THE HIGH PRESSURE
BOOSTER PUMPS