OM-01478
D SERIES
OPERATION
PAGE C - 2
STOPPING
After stopping the pump, lock out and tag out in
coming power to the motor to ensure that the
pump will remain inoperative.
If the pump will be idle for more than a few hours, or
if it has been pumping liquids containing a large
amount of solids, flush it with clean water.
Cold Weather Preservation
The primary construction materials of this
pump are aluminum, with neoprene flap
valves and diaphragm. Do not attempt to
clean or flush this pump with any liquid
which would attack pump fittings or com
ponents. Avoid cleaning with cleaning sol
vent.
In below freezing conditions, drain the water from
the pump and the lines when the pump is not in op
eration. Also, clean out any solids by flushing with a
hose.
GEARBOX TEMPERATURE CHECK
The gearbox runs higher than ambient tempera
tures because of heat generated by friction. Tem
peratures of approximately 200
_
F (93
_
C) are con
sidered normal, and can operate intermittently at
250
_
F (121
_
C).
Checking gearbox temperatures by hand is inac
curate. Place a contact‐type thermometer against
the housing and record this temperature for future
reference.
A sudden increase in gearbox temperature is a
warning that the bearings are at the point of failing.
Make certain that the bearing lubricant is of the
proper viscosity and at the correct level (see
LU
BRICATION
in Section E). Bearing overheating
can also be caused by shaft misalignment and/or
excessive vibration.
When pumps are first started, the bearings may
seem to run at temperatures above normal. Con
tinued operation should bring the temperatures
down to normal levels.
