SANDPIPER SB1 1/2-H - Manual

520-029-000 8/99 Model SB1½-H Page 1
SERVICE AND OPERATING MANUAL
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.
BEFORE OPERATION
Before pump operation, inspect all
gasketed fasteners for looseness
caused by gasket creep. Retorque loose
fasteners to prevent leakage. Follow
recommended torques stated in the card
attached to the new pump.
PLEASE NOTE!
The photos shown 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 OPERATION
The SandPIPER pump is powered by hydraulic fluid which alternately pressur-
izes the inner sides of the two diaphragm chambers while simultaneously exhaust-
ing the opposite inner chambers causing the diaphragms, which are connected by a
shaft, to move endwise. Since hydraulic pressure is applied over the entire surface
of the diaphragm which is forcing liquid to be discharged by its other side, the dia-
phragm 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.
Since the diaphragms are connected by means of a shaft secured by plates to the
center of the diaphragms, while one diaphragm is being pressurized to perform
discharge stroke, the other diaphragm is being pulled to perform the suction stroke
in the opposite chamber. The suction stroke becomes the only unbalanced load
applied to diaphragms during operation, thereby providing much longer life than
mechanical operated diaphragms under similar conditions. Since the suction lift
portion of the operation is essentially the only load applied to diaphragms, it be-
comes obvious that the longest possible diaphragm life will be attained by the least
amount of suction lift. ALWAYS KEEP THE UNIT AS CLOSE TO THE LIQUID BE-
ING PUMPED AS POSSIBLE. POSITIVE SUCTION HEAD IN EXCESS OF 10 FEET
(3.05 METERS) OF LIQUID SHOULD ALSO BE AVOIDED FOR GOOD DIA-
PHRAGM SERVICE LIFE.
Alternate pressurizing and exhausting of the diaphragm chamber is performed by
means of an externally mounted, pilot operated, four way, spool type distribution
valve. When the spool is at one end of the valve body, inlet hydraulic pressure is
connected to one diaphragm chamber and the other diaphragm chamber is con-
nected to the exhaust. When the spool is moved to the opposite end of the valve
body, the porting of chambers is reversed. The 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 one end of the distribution valve spool while
simultaneously exhausting the other. The pilot valve is positively shifted at each end
of the diaphragm stroke by the diaphragm plate coming in contact with the end of the
pilot valve spool and pushing it into position for shifting of the air distribution valve.
Chambers are manifolded together with a suction and discharge check valve for
each chamber to maintain flow in one direction through the pump.
INSTALLATION
Locate the pump as close to liquid being pumped as is practical to keep suction
line length and number of fittings to a minimum. DO NOT REDUCE SUCTION LINE
SIZE except for very low rates or where higher velocities are required to keep
pumped material in suspension in the carrying liquid. For installations involving the
use of rigid piping, short flexible sections of hose are recommended between pump
and piping. This reduces piping strains and vibrations.
OPERATION
Your SandPIPER pump has been tested prior to shipment and is ready for use as
received.
The SandPIPER is completely self-priming from a dry start up to suction lifts of 15
feet (4.57 meters). For priming at suction lifts in excess of 15 feet (4.57 meters), fill
the chambers with liquid prior to operation.
Model SB1 1 /
2
-H
DANGER
Before doing any maintenance on the
pump, be certain all hydraulic pressure
is completely vented from the pump,
suction, discharge, piping, and all other
openings and connections. When used
for toxic or aggressive fluids, the pump
should always be flushed clean prior to
disassembly. Be certain that approved
eye protection and protective clothing
are worn all times in the vicinity of the
pump. Failure to follow these
recommendations may result in serious
injury or death.
HAZARD WARNING
POSSIBLE EXPLOSION HAZARD can
result if 1, 1, 1,-Trichloroethane,
Methylene Chloride or other
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.
Type 1
®