Product Manual

335A-PRV-00
3
07/2011
Specifications Information and Repair Parts Manual DIAPHRAGM PUMPS
x
Diaphragm Pumps
Warranty on this unit is void unless the gear box is lubricated
with appropriate gear oil listed above. DO NOT OVER FILL!
INSTALLATION
NOTE: In any installation where property damage can occur by pumps
not operating due to power outages, discharge line freezing or any
other reason, a backup system(s) and/or warning system(s) should be
used.
1. Place the pump on a level, solid foundation, locating it as
close to the liquid as possible, making the suction line as
short and direct as possible.
2. Install pipe nipples (Ref. No. A36) so the smoother side of
pipe end faces the suction and discharge hose.
Maximum discharge head is 25 feet or 10.9 psi. Operation over
this head or pressure will cause pump to stall and/or gearbox
damage. Use only rigid hoses.
3. Attach suction piping to the suction inlet (Ref. No. W2) and
discharge piping to the discharge outlet (Ref. No. W7). The
suction line should be positioned such that there is a
continual upward slope from the fluid source to the pump.
Avoid using loops or sections of pipe or fittings which might
permit air to become trapped.
NOTE: If hose is used, be sure to use reinforced hose on both the
suction and discharge. DO NOT USE canvas or similar collapsible
materials. NEVER USE PIPE REDUCER; PIPE SIZE MUST BE
EQUAL TO OR LARGER THAN PUMP PORT SIZE. Suction line
must be airtight so that air cannot leak in and destroy priming vacuum.
On a permanent installation where piping is used, always connect a
piece of flexible hose between pump and piping so pump is free to
move slightly.
4. It is advisable to use a strainer (Ref. No. W16) on the inlet
end of the suction hose or pipe. A properly sized strainer is
supplied with this unit and should be used at all times to
prevent damage. Keep the strainer clean. If possible,
suspend it to keep it from becoming clogged with muck,
roots, debris or leaves. It is best to keep hose free of kinks
as they will restrict flow and add excess loading to pump
and gearing.
5. GASOLINE ENGINE UNITS: Follow all instructions in the
engine manual before starting the engine. Fill engine with
oil, gasoline, etc.
AIR MOTOR UNITS: Follow all instructions in the air motor
manual before starting unit.
ELECTRIC MOTOR UNITS: It is strongly recommended
that this unit is plugged into a G.F.I. (Ground Fault
Interrupter) circuit. Consult your local electrician for
installation and availability.
6. Input RPM (to pump) – Input RPM must be between 1750
and 2750 RPM. Final pump speed will be 40 strokes/min.
with a 1750 RPM input and 60 strokes/min. with a 2750
RPM input.
Do not exceed 60 strokes per minute with the diaphragm pump.
OPERATION
Operate the diaphragm pump in an upright position only.
1. This diaphragm pump is capable of priming "dry" up to
fifteen feet; it will prime much faster when it is filled with
clean water through priming cap (Ref. No. W6). Primed, it
can lift to 25 feet.
2. Activate unit following engine or air motor manual or turning
unit on if electrical.
Do not control Discharge capacity with a valve or similar device.
CLEARING JAM-UP
If large solids or an accumulation of sand or other sediment becomes
lodged in the pump well (Ref. No. A3) preventing the plunger arm
(Ref. No. A2) from making a full stroke, the pump will either stall or the
crank (Ref. No. P5) will slip on the output shaft (Ref. No. G8). The
pump is designed to react this way to prevent severe internal damage.
If such a jam-up does occur, the pump should be thoroughly cleaned
as described in "If Pump Stalls" shown below. Refer to parts list and
illustration for parts identification.
If pump has stopped or stalled for any unknown reason, clean
out pump cavity thoroughly. Failure to comply with the "caution"
could result in damage to crank (Ref. No. P5/P9), plunger arm
(Ref. No. P1) or other parts of assembly.
1. IF PUMP STALLS:
a. Remove handle (Ref. No. A35).
b. Remove four bolts (Ref. No. A9 & A10).
c. Clean obstruction and all debris from pump well
(Ref. No. A3).
d. Reassemble pump in reverse order of
disassembly and return to service.
2. IF PLUNGER ARM (Ref. No. P1) SEIZES AND GEAR BOX
OUTPUT SHAFT (Ref. No. G8) TURNS IN CRANK (Ref.
No. P5):
a. Remove sheet metal guard (Ref. No. A4) by
loosening hand knob screws (Ref. No. A5).
b. Disassemble pump and clean as described in
steps (a) through (d) listed for stalled engine jam-
up.
c. Torque the crank lock screw (Ref. No. P6) to 70
foot pounds with an appropriate torque wrench
(see Figure 3).
Figure 3
d. Reassemble the pump in reverse order of
disassembly and return to service.
Pump jamming with an over-torqued lock screw may cause
internal damage. Under torqueing may allow the output shaft to
spin and wear parts necessitating replacement.
MAINTENANCE
Make certain that unit is disconnected from power source before
attempting to service or remove any component.
1. Check gear box oil level every 20 hours of operation or at
least once a week; more often if any leakage is detected
around the gear box. Change gearbox oil after the first 40
hours of operation. Fill to the oil level plug. Change gearbox
oil every 350 hours of operation.
2. The plunger bearing (Ref. No. P3) must be greased (any
automotive grease) after every 8 hours of use. This is done
by rotating plunger bearing to the 12 o’clock position. At this
point, grease fitting will be visible through hole in guard (Ref.
No. A4). Bearing may be cleaned and kept well lubricated
by pumping grease slowly into fitting until new grease oozes
out between bearing and journal.