MP Pumps PETROLEUM SELF-PRIMING 5, 8, 10, 15 INSTRUCTION - Manual (Page 2)

unlock impeller drive sleeve from drive shaft.
The impeller on the PO,PG,PE 10 and 15 has
5. Worn impeller - too much clearance
4. Seal worn and leaked air.
3. Collapsed suction line or clogged strainer
This pump is equipped with a self-lubricated
base of the pump housing is provided for
draining.
self-priming thereafter.
impeller.
It is important that this Instruction Bulletin be read carefully to fully familiarize yourself with the pump
assembly arrangement. The instructions contained herein pertain to installation and maintenance of the
pump assembly only. Check unit carefully to make certain that no parts are missing or have been broken
INSTRUCTION BULLETIN
in shipment.
a standard drive shaft is used - no special taper
OPERATION
housing should be drained. A drain plug at the
DISASSEMBLY This petroleum pump is a self-priming centrifugal
Disconnect power to prevent accidentally
starting.
Remove nuts and lock washers holding the
pump housing to adapter.
connections or pin holes in the hose.
If pump fails to prime or stops pumping, check for Disconnect lines and drain pump housing.
the following possible causes:
2. Air leak in the suction line due to loose
1. No liquid in the pump housing
Remove cap screws and nuts holding pump
housing to base (where used).
Loosen the housing and remove carefully to
prevent tearing gaskets.
between impeller and wear plate.
TO REMOVE IMPELLER discharge head.
8. Trying to prime against too high a
7. Suction lift is too high.
6. Pump not running fast enough.
MAINTENANCE
This pump is of simple construction with only
one moving part.
pump and only requires priming prior to its initial
start. The pump will retain sufficient liquid for
TO REMOVE PUMP HOUSING
Remove impeller clamp nuts and clamp to
or threads. It is easy to adjust or remove the
The impeller on the PO,PG,PE 5 and 8 is
supply. Set the unit on solid footing and as
nearly level as possible.
threaded to a stainless steel drive sleeve.
For optimum performance, place pump as close
to liquid source as possible to reduce suction lift
PETROLEUM SELF-PRIMING CENTRIFUGAL PUMPS
prevents collapsing due to vacuum in the suction
line when pump is in operation. The suction line
tight, particularly on the suction line where an air length of time in freezing conditions, the pump
leak can prevent priming or reduce pump capacity.
should be as short as possible to keep friction
loss at a minimum. Use pipe sealant on all the
connections and make certain that all fittings are
If the pump is to be left standing idle for any
shaft seal. The self-lubricated seal is lubricated
by the liquid in the pump. Operating the pump
dry will seriously damage the mechanical seal.
flanges should be used. Reinforced suction hose
is recommended providing greater flexibility and
Pipe or hose of the same size as the provided
to a minimum. For best results, pump should be
installed not more than 15 feet above the liquid
INSTALLATION
stainless cover pressed on. The sleeve slips
over the drive shaft and is locked to the drive
shaft with a two piece clamp. This means that