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520-121-000 7/99 Model PB¾ -A Type 3 Page 1

WARREN RUPP, INC. A Unit of IDEX Corporation • P.O. Box 1568 • Mansfield, Ohio 44901-1568 USA • (419) 524-8388 Fax (419) 522-7867

IMPORTANT

Read these instructions completely,

before installation and start-up. It is the

responsibility of the purchaser to retain

this manual for reference. Failure to

comply with the recommendations

stated in this manual will damage the

pump, and void factory warranty.

WARNING

Take action to prevent static sparking.

Fire or explosion can result, especially

when handling flammable liquids. The

pump, piping, valves, containers or

other miscellaneous equipment must be

grounded.

Model PB¾ - A

SERVICE AND OPERATING MANUAL

PLEASE NOTE!

The photos in this manual are for general instruction only. Your specific model

may not be shown. Always refer to the parts list and exploded view drawing for your

specific model when installing, disassembling or servicing your pump.

PRINCIPLE OF PUMP OPERATION

This ball check valve pump is powered by compressed air and is a 1:1 pressure

ratio design. It alternately pressurizes the inner side of one diaphragm chamber,

while simultaneously exhausting the other inner chamber. This causes the dia-

phragms, which are connected by a common rod, to move endwise. Air pressure is

applied over the entire surface of the diaphragm, while liquid is discharged from the

opposite side. The diaphragm operates under a balanced condition during the dis-

charge stroke, which allows the unit to be operated at discharge heads over 200 feet

(61 meters) of water head.

Since the diaphragms are connected by a common rod, secured by plates to the

center of the diaphragms, one diaphragm performs the discharge stroke, while the

other is pulled to perform the suction stroke in the opposite chamber.

For maximum diaphragm life, keep the pump as close to the liquid being pumped

as possible. Positive suction head in excess of 10 feet of liquid (3.048 meters) may

require a back pressure regulating device. This will maximize diaphragm life.

Alternate pressuring and exhausting of the diaphragm chamber is performed by

means of an externally mounted, pilot operated, four-way spool type air distribution

valve. When the spool shifts to one end of the valve body, inlet air pressure is applied

to one diaphragm chamber and the other diaphragm chamber exhausts. When the

spool shifts to the opposite end of the valve body, the porting of chambers is re-

versed. The air distribution valve spool is moved by an internal pilot valve which

alternately pressurizes one side of the air distribution valve spool, while exhausting

the other side. The pilot valve is shifted at each end of the diaphragm stroke by the

diaphragm plate coming in contact with the end of the pilot valve spool. This pushes

it into position for shifting of the air distribution valve.

The chambers are manifolded together with a suction and discharge check valve

for each chamber, maintaining flow in one direction through the pump.

INSTALLATION & START-UP

Locate the pump as close to the product being pumped as possible, keeping

suction line length and number of fittings to a minimum. Do not reduce line size.

For installations of rigid piping, short flexible sections of hose should be installed

between pump and piping. This reduces vibration and strain to the piping system. A

Warren Rupp Tranquilizer

surge suppressor is recommended to further reduce

pulsation in flow.

This pump was tested at the factory prior to shipment and is ready for operation.

It is completely self-priming from a dry start for suction lifts of 10 feet (3.05 meters) or

less. For suction lifts exceeding 10 feet of liquid, fill the chambers with liquid prior to

priming.

AIR SUPPLY

Air supply pressures cannot exceed 100 psi (6.89 bar). Connect the pump air inlet

to an air supply of sufficient capacity and pressure required for desired performance.

When the air line is solid piping, use a short length of flexible hose (not less than

/4"

(19mm) in diameter) between pump and piping to eliminate strain to pipes.

AIR INLET & PRIMING

For start-up, open an air valve approximately

/2 to

/4 turn. After the unit primes,

an air valve can be opened to increase flow as desired. If opening the valve in-

Type 3

CAUTION

Operating temperature limitations are as

follows:

PFA ....... 212°F(100°C) Max to 0°F(-18°C)Min.

PVDF .... 200°F(93°C) Max to 10°F(-13°C)Min.

Nylon .... 120°F(48°C) Max to 32°F (0°C) Min.

Polypro 150°F(65°C) Max to 40°F (5°C) Min.

BEFORE OPERATION

Before pump operation, inspect all

gasketed fasteners for looseness

caused by gasket creep. Retorque loose

fasteners to prevent leakage prior to

start-up. Follow recommended torques

stated in this manual.

Figure 1: Air Inlet Capscrews

1 2 3 4 5 6 7

Resumo do Conteúdo

Página 1 - Model PB¾ - A

520-121-000 7/99 Model PB¾ -A Type 3 Page 1WARREN RUPP, INC. A Unit of IDEX Corporation • P.O. Box 1568 • Mansfield, Ohio 44901-1568 USA • (419) 524

Página 2

Model PB¾ -A Type 3 Page 2 520-121-000 7/99CAUTIONIn the event of diaphragm rupture,pumped material may enter the air endof the pump, and be dischar

Página 3 - -A Type 3 Page 3

520-121-000 7/99 Model PB¾ -A Type 3 Page 3of the exhaust air causing the pump to cycle erratically, or stop operating. This canbe addressed by usin

Página 4

Model PB¾ -A Type 3 Page 4 520-121-000 7/99evident. Air leakage into the discharge line indicates a ruptured diaphragm. Airleakage from the exhaust

Página 5 - REPAIR PARTS LIST and DRAWING

520-121-000 7/99 Model PB¾ -A Type 3 Page 5WARREN RUPP, INC. A Unit of IDEX Corporation • P.O. Box 1568 • Mansfield, Ohio 44901-1568 USA • (419) 524

Página 6 - Continued from previous page

Model PB¾ -A Type 3 Page 6 520-121-000 7/99ITEM TOTALNO. PART NUMBER DESCRIPTION RQD.Repair Parts shown in bold face (darker)type are more likely to

Página 7 - Printed in U.S.A

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Sandpiper PB3/4-A Manual do Utilizador

Consulte online ou descarregue Manual do Utilizador para Bombas Sandpiper PB3/4-A. SANDPIPER PB3/4-A User Manual Manual do Utilizador

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