Warren rupp SandPIPER EB3-M Service & Operating Manual

PRINCIPLE OF PUMP OPERATION
The SandPIPER pump is powered by compressed air which alternately pressur-
izes the inner sides of the two diaphragm chambers while simultaneously exhausting
the opposite inner chambers causing the diaphragms, which are connected by a shaft,
to move endwise. Since air pressure is applied over the entire surface of the
diaphragm which is forcing liquid to be discharged by its other side, the diaphragm is
operating under a balanced condition during the discharge stroke. This allows the unit
to be operated at discharge heads over 200 feet (61 meters) of water head.
Alternate pressurizing and exhausting of the diaphragm chamber is performed by
an externally mounted, pilot-operated, four way, spool type air distribution valve.
When the spool is at one end of the valve body, inlet air pressure is connected to one
diaphragm chamber and the other diaphragm chamber is connected to the exhaust.
When the spool is removed to the opposite end of the valve body, the porting of
chambers is reversed. The air distribution valve spool is moved from one end position
to the other in the valve body by means of an internal pilot valve which alternately
pressurizes the ends of the air distribution valve spool while simultaneously exhaust-
ing the other ends. The pilot valve is positively shifted at each end of the diaphragm
stroke by the diaphragm plate's coming in contact with the end of the pilot valve spool
and pushing 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 to
maintain flow in one direction through the pump.
INSTALLATION PROCEDURES
Position the pump as close as possible to the source of the liquid to be pumped.
Avoid long or undersize suction lines and use the minimum number of fittings.
For permanent installation involving rigid piping, install short flexible sections of
hose between the pump and piping. This reduces strains and permits easier removal
of the pump for service when required. At time of installation, inspect all external
gasketed fasteners for looseness caused by gasket creep. Tighten loose
fittings securely to prevent leakage.

AIR SUPPLY

Do not connect the unit to an air supply in excess of 125 PSI (8.61 bars). Install
a shutoff valve in the air supply line to permit removal of the unit for servicing. When
connecting an air supply of rigid piping, mount a section of flexible line to the pump
to eliminate piping strain. In permanent installations, an air line filter is recommended.
The weight of the air supply line and of the filter must be supported by some
means other than the air valve cap. Failure to provide support may result in
damage to the pump.
AIR INLET & PRIMING
Your SandPIPER pump has been tested prior to shipment and is ready for use as
received. It is completely self-priming and no initial filling with fluid is required.
If the unit is to be totally submerged, the air exhaust must be piped above liquid
level to prevent the liquid and foreign material from entering the air distribution valve
mechanism.
Open the inlet air valve at least one turn to allow sufficient cycling rate for the pump
to prime (30 to 60 cycles per minute). After pumping starts, adjust the inlet air valve
for the desired pumping capacity. When further opening of the inlet air valve increases
cycling rate without increasing the flow rate, the pump is being starved of liquid due
to suction limitations. Further opening of the air inlet valve will waste compressed air.
WARREN RUPP ® , INC., A Unit of IDEX Corporation • P.O. Box 1568 • Mansfield, Ohio 44901-1568 USA • (419) 524-8388 • Fax (419) 522-7867 • www.warrenrupp.com
520-143-000 8/00
SERVICE AND OPERATING MANUAL
®
Models EB3-M/EB4-M/EB80M
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.
HAZARD WARNING
POSSIBLE EXPLOSION HAZARD can
result if 1, 1, 1,-Trichloroethane,
Methylene Chloride
Halogenated Hydrocarbon solvents are
used in pressurized fluid systems
having Aluminum or Galvanized wetted
parts. Death, serious bodily injury and/
or property damage could result.
Consult with the factory if you have
questions concerning Halogenated
Hydrocarbon solvents.
DANGER
Before doing any maintenance on the
pump, be certain all pressure is com-
pletely vented from the pump, suction,
discharge, piping, and all other open-
ings and connections. Be certain the air
supply is locked out or made non-
operational, so that it cannot be started
while work is being done on the pump.
Be certain that approved eye protection
and protective clothing are worn at all
times in the vicinity of the pump. Failure
to follow these recommendations may
result in serious injury or death.
CAUTION
In the event of diaphragm rupture,
pumped material may enter the air end
of the pump, and be discharged into the
atmosphere. If pumping a product which
is hazardous or toxic, the air exhaust
must be piped to an appropriate area for
safe disposition.
CAUTION
Before maintenance or repair, shut off
the compressed air line, bleed the pres-
sure, and disconnect the air line from
the pump. The discharge line may be
pressurized and must be bled of its
pressure. When used for toxic or ag-
gressive fluids, the pump should
always be flushed clean prior to
disassembly.
Models EB3-M/EB4-M/EB80M Page 1
Type 2
or other