PO-1775F
OPERATOR’S MANUAL FOR:
END-SUCTION CENTRIFUGAL PUMPS
Table of Contents
PLEASE READ SECTIONS I, II AND III BEFORE OPERATING PUMP.
Page no.
I. Safety Precautions ..................................................................................................................................... 2
II. Preparing the Pump for Operation ........................................................................................................... 3
III. Pump Operating Instructions.................................................................................................................... 4
IV. Pump Trouble Shooting and Repair ......................................................................................................... 4
V. Pump Disassembly and Repair ................................................................................................................ 4
VI. Special Information:
A. Flexible-coupling: Coupling Alignment .............................................................................................. 5
1. Couplings
2. Baseplate Kits
B. Close-coupled Electric Motor and Pneumatic Motor Driven Pumps .............................................. 6
C. Pump Dimensions .........................................................................................................................6 & 7
VII. Pump Parts List and Parts Diagram .................................................................................................. 8 - 10
OPERATOR’S MANUAL
I. SAFETY PRECAUTIONS
WARNING:
1. Never use these pumps for pumping flammable liquids such
as gasoline.
AN EXPLOSION AND SERIOUS INJURY MAY
RESULT IF THIS WARNING IS IGNORED.
2. In pumping corrosive materials, extreme caution should be
exercised. Provide safety guards, ventilation, and drains to
protect people and property in case of a leak in the pump.
Handling instructions from the manufacturer(s) of the liquids
being pumped should be closely followed.
3. Before starting the pump, follow all of the instructions in this
manual and any supplemental instructions supplied with the
pump.
4. Any person operating this pump and its power unit should be
fully aware of its safe operation before they start using it.
5. Never operate an engine-driven unit in an explosive atmosphere,
near combustible materials, or where insufficient ventilation ex
-
ists unless specific provisions have been made regarding the
power unit so as to prevent possible injury and damage. Be
certain any other power unit is safe for the area in which it is to
be operated.
6. Always be sure that the unit is on a secure footing and keep the
immediate pump and power unit area free of all unauthorized
personnel. If the pump is sitting beside a pit, be sure it is well
anchored so that it does not fall in.
7. Never operate the unit with any guards removed.
8. With engine-driven pumps:
a. Observe all safety precautions for the handling of fuel.
b. Never refuel the engine while running, and care
should be exercised so that no fuel is spilled on a hot engine.
Always allow engine to cool at least two minutes before refu-
eling.
9. Before working on this pump make sure that the power unit
cannot inadvertently be started.
10. Be sure that the power unit, pump, wiring and piping installa-
tions are suitable for the liquid being pumped, and comply with
all applicable codes and regulations.
11. Do not use torches or apply fire or flames to this pumps for any
reason.
1. This pump must not be subjected to more than 65 pounds per
square inch internal pressure. The pump itself, normally can-
not develop more than 55 pounds per square inch pressure.
The pump most
not
be used under any of the following unusual
conditions which can result in excessive pressures being de
-
veloped:
A. Pump shaft speed over 3600 RPM.
B. Quick closing valves in discharge line or any other device
which may introduce hydraulic shock into the system.
C. Possible sudden obstruction of discharge line such as
vehicle driving over hose.
D. High positive suction pressures (such as with a flooded
suction) which would increase the
total system
pressure to 65
PSI or above.
E. Do not pump liquids with specific gravities exceeding the
following values:
Maximum
Impeller*
Specific Gravity**
Number
at 3600 RPM
667
.1
707
1.6
709
1.6
975
.1
*The impeller curve letter appears in the model number on the pump
label. It is the fifth digit of the model number.
**The specific gravity is the ration of the weight of the liquid to be
pumped to the weight of an equal volume of water. Water has
a specific gravity of 1.0. Therefore, a liquid which is heavier
than water has a specific gravity greater than 1.0.
13. Do not overtighten the drain plug. Hand tighten only. Excessive
force may damage the threads or the pump body. Do not use
a metal plug.
14. Use at least one foot of flexible hose to make plumbing connec
-
tions to the pump. Rigid piping may put stresses on the pump,
causing damage. If rigid piping must be used, properly support
it so as to eliminate stresses on the pump.
