Berkeley 7LT2 Manuale utente

OWNERS MANUAL

INSTALLATION AND OPERATING INSTRUCTIONS

REPAIR PARTS LIST

Horizontal Multi-Stage Jet Pumps

MODELS

IMPORTANT

For best possible performance. . .continuous, satisfactory

operation, read these instructions before installing your new

pump. Should service be required, this manual can be a valuable guide. It

should be kept near the pump installation for ready reference.

U1002 (Rev. 3/19/09)

3/4 HP 1 HP 1-1/2 HP

7LT2 10LT2 15LT2

Deep Well Installation

Under certain conditions, horizontal multi-

stage pumps can develop extremely high

pressure. Install a pressure relief valve

capable of passing entire pump flow at 75 PSI.

Do not allow pump, pressure tank, piping, or any

other system component containing water to freeze.

Freezing may damage system, leading to injury or flood-

ing. Allowing pump or system components to freeze will

void warranty.

NOTICE: Support pump base to avoid strain on casing adapter

or pump. Lack of support can damage adapter or pump.

Figure 2 shows casing adapter bolted directly to pump body.

Shallow Well Installation

NOTICE: If no foot valve is used, install 1” check valve in

horizontal line.

Priming the Deep Well Pump

To prime pump, completely close the priming valve located

just below the suction opening by turning screw clockwise.

This valve will be left closed during operation in a deep well

installation. See Figure 1.

Close regulator adjusting valve, located on end of regulator,

by turning stem clockwise. See Figure 1.

Remove priming plug from top of regulator valve, see Figure

1, and fill with clean water. Replace plug.

Start pump and run a few moments.

If pressure does not build up, remove priming plug and refill

with more water. All of the trapped air in pump body was not

removed.

Restart pump.

When pump is completely primed and builds up pressure,

slowly open the regulator valve, (turn counter-clockwise), and

observe the pressure reading on the pressure gauge.

When the pump reaches a point where it will lose prime, cavi-

tation noise can be heard.

The best, or correct, pressure gauge setting is approximately

3 pounds higher than the pressure gauge reading was when

the pump started to lose prime.

If pump loses prime, repeat the priming procedure above and

this time open regulator valve only until the correct pressure

reading is reached.

If a vacuum gauge is available, screw it into the 1/8” AVC

tapping on front of tank body. Adjust regulator until 20” of

vacuum is registered on the gauge. Tighten locknut on regu-

lator. This method will give maximum performance of the

unit.

Pumps come equipped with 30-50 PSI pressure switches.

When pump is used with precharged tank in system, set tank

pre-charge at 28 PSI. Check tank pre-charge annually with

an ordinary tire gauge. Pre-charge is set with no water pres-

sure on system.

Priming

Valve

Pipe fittings not furnished

Drain

Plug

Drive Line

Suction

Line

Plastic Pipe

Adapter (2)

Plastic Hose

(2)

Hose Clamp

(2)

To Service

Regulator Adjusting

Valve

Priming Plug

Regulator

Valve

1" Close nipple &

90 Elbow

2781093

To Service

Priming Plug Regulator

Val v e

279 1093

Figure 1 – Deep Well Installation

Figure 2 – Well Casing Adapter bolted directly

to pump

Priming the Shallow Well Pump

Never run pump dry. Running pump without

water may cause pump to overheat, damaging seal and pos-

sibly causing burns to persons handling pump. Fill pump with

water before starting.

Never run pump against closed discharge.

To do so can boil water inside pump, causing hazardous

pressure in unit, risk of explosion and possibly scalding per-

sons handling pump.

To prime the pump, completely open the priming valve locat-

ed just below the suction opening on the tank body by turning

the valve stem counter-clockwise all the way until it stops.

This valve may be left open during operation as a shallow

well pump with no jet. See Figure 3 and “NOTICE” below.

Remove priming plug from top of elbow (see Figure 3), and

fill with clean water. Replace plug.

Start pump and between 45-60 seconds. If water is not being

pumped, turn off pump and repeat priming process.

NOTICE: If a bolt-on jet is being used, after pump is primed,

close the priming valve during operation as a shallow well

pump.

Service – Draining for Winter

Do not touch an operating motor. Modern

motors are designed to operate at high temperatures. To

avoid burns when servicing pump, allow it to cool for 20 min-

utes after shut-down before handling.

When the pump is to be disconnected from service, or is in

danger of freezing, it should be drained. The pump has a

drain plug which must be removed. Remove the priming plug

to vent the pump.

To Service

Priming

Valve

From

Well

1"Pipe Plug

Plastic Pipe

Adapter

Hose Clamp

Plastic

Hose

Pipe fittings not furnished

PrimingPlug &

1/2"Street Elbow

240 1093

Figure 3 – Shallow Well Installation

TABLE I

Recommended Fusing and Wiring Data – 60 Cycle Motors

DISTANCE IN FEET FROM MOTOR TO METER

BRANCH 0’ 101’ 201’ 301’ 401’

MAX. FUSE* to to to to to

MOTOR LOAD RATING 100’ 200’ 300’ 400’ 500’

HP VOLTS AMPERES AMPS WIRE SIZE

3/4 115 14.8 20 12 8 6 6 4

3/4 230 7.4 15 14 14 14 12 10

1 115 19.2 25 10 8 6 4 4

1 230 9.6 15 14 14 12 10 10

1-1/2 115 24.0 30 10 6 6 4 3

1-1/2 230 12.0 15 14 14 12 10 10

*Fusetrons are recommended instead of fuses on all motor circuits.

Motor Switch Settings

Dual-voltage motors (motors that can operate at either 115 or

230 volts), are set at the factory to 230 volts. Do not change

motor voltage setting if line voltage is 230 volts, or if you have

a single voltage motor.

NOTE: Never wire a 115 volt motor to a 230 volt line.

Remove Motor End Cover

If you have a dual-voltage motor, and will connect it to 115

volts, follow the procedure below.

You will need to remove the motor end cover to change the

voltage setting.

Your motor terminal board (located under the motor end

cover) should look like that shown below.

To change to 115 volts:

1. Make sure power is off.

2. Turn the dial counter-clockwise until 115 shows in the dial

window.

3. The wires from the pressure switch should already be

attached to to power lead terminals.

4. Reinstall the Motor end cover.

Pressure Switch Wiring

Step 5. Go to Wiring Connections below.

Hazardous voltage. Can shock, burn, or kill.

Connect ground wire before connecting power supply

wires. Use the wire size (including the ground wire) speci-

fied in the wiring chart. If possible, connect the pump to a

separate branch circuit with no other appliances on it.

Explosion hazard. Do not ground to a gas

supply line.

Electrical

Disconnect power before working on pump, motor, pressure switch, or wiring.

Figure 4 – Removing Motor End Cover

Motor

End Cover

End Cover Screws

Figure 6 – Pressure Switch Wiring

Clamp the power cable to prevent strain

on the terminal screws.

Connect the green (or bare copper) ground wire

to the green ground screw.

Motor wires connect here.

3187 0704H

Power supply wires connect here.

230 Volt: Connect 2 hot wires (black and red)

here and cap the white (neutral) wire. It does

not matter which wire goes to which screw.

115 Volt: Connect one hot wire (black or red)

to one of these screws (it doesn't matter

which one). Connect the white (neutral) wire

to the other screw. Cap any remaining

black or red wires.

Figure 5 – Voltage set to 230 volts, Dial Type

Voltage

Change Dial

Ground

Screw

Power Lead

Terminals

Wiring Connections

Fire hazard. Incorrect voltage can cause a fire

or seriously damage the motor and voids the warranty. The

supply voltage must be within ±10% of the motor nameplate

voltage.

NOTICE: Dual-voltage motors are factory wired for 230 volts.

If necessary, reconnect the motor for 115 volts, as shown. Do

not alter the wiring in single voltage motors.

Install, ground, wire, and maintain your pump in compliance

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 inspec-

tor for code information.

Connection Procedure:

1. Connect the ground wire first as shown in Figure 6. The

ground wire must be a solid copper wire at least as large

as the power supply wires.

2. There must be a solid metal connection between the pres-

sure switch and the motor for motor grounding protection.

If the pressure switch is not connected to the motor, con-

nect the green ground screw in the switch to the green

ground screw under the motor end cover. Use a solid cop-

per wire at least as large as the power supply wires.

3. Connect the ground wire to a grounded lead in a service

panel, to a metal underground water pipe, to a metal well

casing at least ten feet (3M) long, or to a ground electrode

provided by the power company or the hydro authority.

4. Connect the power supply wires to the pressure switch as

shown in Figure 6.

10A

10B

225 0993

12A

12B

15 16

18A

EXPLODED VIEW

REPAIR PARTS

KEY PART NO. 7LT2 10LT2 15LT2

NO. DESCRIPTION W/KIT USED 3/4 HP 1 HP 1-1/2 HP

1 Motor, 60 Hz, 115/230V - Single Phase 1 A700DH A700EH A700FH

•1A Key - Shaft OH 2 U65-15SS U65-15SS U65-15SS

2 Water Slinger 1 17351-0009 17351-0009 17351-0009

3 Stud - 3/8” - 16 x 1” Hex Head 4 U30-74ZP U30-74ZP U30-74ZP

4 Seal Plate 1 L3-26 L3-26 L3-26

5 Gasket - Seal Plate OH/SG 1 L20-43 L20-43 L20-43

6 Shaft Seal OH/SG 1 U109-267 U109-267 U109-267

7 Spring Holder Washer OH/SG 1 J24-11 J24-11 J24-11

8 Impeller OH 2 L105-2PC L105-2PB L105-2P

9 Spacer - Impeller 1 J43-23 J43-23 J43-23

10 Diffuser Assembly w/Wear Rings 1 L101-45 L101-45 L101-45

10A Wear Ring OH (1) L23-9 L23-9 L23-9

10B Wear Ring OH (1) P23-19 P23-19 P23-19

11 Stop Nut - Shaft OH 1 U36-175SSW U36-175SSW U36-175SSW

12 Diffuser Cover w/Wear Ring 1 L103-27 L103-27 L103-27

12A Wear Ring (1) L23-9 L23-9 L23-9

12B Capscrew - 1/4” - 20 x 3” Lg. 3 U30-528SS U30-528SS U30-528SS

13 Diffuser Ring OH/SG 1 L21-1 L21-1 L21-1

14 Pipe Plug - 1/2” NPT 1 U78-59ZPS U78-59ZPS U78-59ZPS

15 Pressure Gauge 1 U239-8 U239-8 U239-8

16 Pump Body 1 L76-36 L76-36 L76-36

17 Pipe Plug - 1/8” NPT 1 U78-56ZPS U78-56ZPS U78-56ZPS

18 Valve Assembly 1 01322 01322 01322

18A Gasket 1 L20-39 L20-39 L20-39

19 Plug - 1/4” NPT 1 U78-941ZPV U78-941ZPV U78-941ZPV

20 Base 1 U4-5 U4-5 U4-5

•20A Lockwasher - 3/8” 2 U43-12ZP U43-12ZP U43-12ZP

•20B Capscrew - 3/8” - 16 x 5/8” Lg. 2 U30-71ZP U30-71ZP U30-71ZP

21 Capscrew - 3/8” - 16 x 7/8” Hex Head 8 U30-73ZP U30-73ZP U30-73ZP

22 Connector 1 L43-5C L43-5C L43-5C

23 Locknut - 1/2” 1 U36-112ZP U36-112ZP U36-112ZP

24 Pressure Switch 1 U217-1219 U217-1219 U217-1219

25 Compression Fitting - Elbow - 1/4” 1 U111-86T U111-86T U111-86T

26 Tube - Pressure Switch 1 U37-217P U37-217P U37-217P

27 Compression Fitting - Straight - 1/4” 1 U111-100T U111-100T U111-100T

SERVICE KITS

Seal and Gasket Kit 1 PP1625 PP1625 PP1625

Overhaul Kit 1 PP1631 PP1632 PP1633

NOTE: SG Included in Seal and Gasket Kit. OH Included in Overhaul Kit.

• Not shown.

229 1093

J212-24H Regulator Valve

EXPLODED VIEW

KEY PART PART

NO. DESCRIPTION QTY. NUMBER

Pressure Regulator – Complete 1 Pkg. 107

1 Regulator Body w/Seat 1 J112-14

1A Seat 1 J66-16

2 Diaphragm Assembly w/Guide (Incl. 2A, 2B) 1 J220-16B

2A Guide 1 J42-5

2B Diaphragm Assembly (Incl. 2C, 2D, 2E, 2F, 2G) 1 J120-16

2C Stem 1 J62-9

2D Diaphragm 1 J20-16

2E Spring Follower 1 J43-31

2F Ext. Tooth Washer 1 U43-23ZP

2G Nut, Hex Head 1/4-20 1 U36-36ZP

3 Spring 1 J24-13

4 Spring Guide 1 J61-5

5 Bonnet 1 J52-9

6 Capscrew 5/16-18 x 3/4” 4 U30-60ZP

7 Nut, Hex Flanged 5/16-18 1 U36-205ZP

8 Capscrew 5/16-18 x 2” 1 U30-69FTZP

9 Pipe Plug 1/2 NPT 1 U78-59ZPS

• Compression Fitting 1/4” 90°EL 1 U111-212T

• Tubing - Pressure Switch 1 U37-678P

REPAIR PARTS

• Not shown

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