Sandpiper ST25A Manual do Utilizador descarregar pdf

520-005-000 1/04

Models ST1-A, ST25A Type 4 Page 1

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

PRINCIPLE OF 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 diaphragms, 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 discharge 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 reversed. 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 ow in one direction through the pump.

This specially-tted SandPIPER pump differs from standard units in that it utilizes

four diaphragms instead of two. The two rod-connected diaphragms being the driver

diaphragms, and the other two (outermost) diaphragms being the actual

pumping diaphragms. Each driver diaphragm (of Neoprene or other elastomer), and the

pumping diaphragm (of TFE), are separated by a chamber lled with liquid. This

transmits the reciprocating motion of the driver diaphragm to the pumping diaphragm.

The TFE pumping diaphragms create alternating suction and discharge action to each

outer diaphragm chamber. The pumping diaphragms are the only ones in contact with

the liquid being pumped.

INSTALLATION & START-UP

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

line length and number of ttings to a minimum. Do not reduce line size.

For installations of rigid piping, short exible 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 ow.

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 10-15 feet (35 meters) or

less. For suction lifts exceeding 15 feet of liquid, ll the chambers with liquid prior to

priming.

AIR SUPPLY

Air supply pressures cannot exceed 125 psi (8.61 bar). Connect the pump air inlet

to an air supply of sufcient capacity and pressure required for desired performance.

When the air line is solid piping, use a short length of exible hose (not less than 3/4"

[19mm] in diameter) between pump and piping to eliminate strain to pipes. Use of a

Warren Rupp Filter/Regulator in the air line is recommended.

Type 4

Model ST1-A

Model ST25A

II 2GD T5

I n t h e e v e n t o f

diaphragm rupture,

pumped material may

enter the air end of

the pump, and be

discharged into the atmosphere. The air

exhaust must be piped to an appropriate

area for safe disposition.

WARNING

Before maintenance

or repair, shut off the

com-pressed air line,

bleed the pressure,

and disconnect the

air line from the pump.

The discharge line may be pressurized

and must be bled of its pressure.

WARNING

B e f o r e p u m p

operation, inspect all

gasketed fasteners

for looseness caused

by gasket creep.

Re-torque loose fasteners to prevent

leakage. Follow recommended torques

stated in this manual.

CAUTION

Rea d t h e se s afety

w a r n i n g s a n d

instructions in this

manual completely,

before installation and start-up of the pump.

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.

Take action to prevent

static sparking. Fire

or ex p l o s io n ca n

re s ult , e sp e cia l ly

w h e n h a n d l i n g

flammable liquids.

The pump, piping, valves,

cont ainers or other miscellaneous

equipment must be grounded.

WARNING

IMPORTANT

SERVICE AND OPERATING MANUAL

1 2 3 4 5 6 7 8 9 10

Resumo do Conteúdo

Página 1 - Model ST25A

520-005-000 1/04Models ST1-A, ST25A Type 4 Page 1 WARREN RUPP, INC. A Unit of IDEX Corporation • P.O. Box 1568 • Manseld, Ohio 44901-1568 USA •

Página 2 - DIAPHRAGM SERVICING

Página 3 - DISTRIBUTION SYSTEM

520-005-000 1/04Models ST1-A, ST25A Type 4 Page 2 AIR INLET & PRIMINGFor start-up, open an air valve approximately 1/2" to 3/4" tur

Página 4 - NON-METAL CENTER SECTIONS

520-005-000 1/04Models ST1-A, ST25A Type 4 Page 3 Pumping Diaphragms:It is recommended that the above procedure be followed to the point of remov

Página 5 - TROUBLESHOOTING

520-005-000 1/04Models ST1-A, ST25A Type 4 Page 4 MODELS WITH 1" SUCTION/DISCHARGE OR LARGER, AND METAL CENTER SECTIONSThe main air valve sl

Página 6 - MAXIMIZE PUMP PERFORMANCE:

520-005-000 1/04Models ST1-A, ST25A Type 4 Page 5 To re-install the sleeve and spool set, lightly lubricate the o-rings on the sleeve with an o-r

Página 7 - Grounding The Pump

520-005-000 1/04Models ST1-A, ST25A Type 4 Page 6 C. If the spool in the air distribution valve is not shifting, check the main spool. It must sl

Página 8

520-005-000 1/04Models ST1-A, ST25A Type 4 Page 7 Grounding The PumpTake action to prevent static sparking. Fire or explosion can result, especia

Página 9 - 520-005-000 1/04

520-005-000 1/04Models ST1-A, ST25A Type 4 Page 8 2 165-042-157 Cap, Valve Body 1 3 170-063-115 Capscrew, Hex Head 1 4 901-035-1

Página 10 - OVERLAY UNITS

520-005-000 1/04Models ST1-A, ST25A Type 4 Page 9 ITEM NO. PART NUMBER DESCRIPTION QTY. 39 196-021-110 Chamber, Outer 2 196-021-

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Sandpiper ST25A Manual do Utilizador

Consulte online ou descarregue Manual do Utilizador para Bombas Sandpiper ST25A. SANDPIPER ST25A User Manual Manual do Utilizador

Resumo do Conteúdo

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