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The indicated direction is recommended because
crosshead load will be carried on the bottom guide,
resulting in a more quiet operation, better lubrication,
and longer life.
OIL FILTER
- A replaceable element oil filter is
recommended. The filter element should be replaced
each time the crankcase oil is changed or every 500
hours.
Time between oil changes depends upon local or
operating conditions. Ordinarily, if the crankcase is
kept closed, it should not be necessary to change oil
more often than once in 500 working hours.
However, the oil must be changed anytime water or
other contamination is found. The oil pressure and oil
level must be monitored and if the pressure is less
than 50 PSIG, the system must be checked to
determine what problems might exist.
The screen on the suction pipe might be obstructed
so that the pump cannot get sufficient oil to maintain
pressure. This screen should be examined when the
oil is changed and cleaned thoroughly. The oil
should be changed if found to be dirty or if it contains
any contamination or water.
HEAT EXCHANGER (Optional Equipment) –
A
bronze shell and tube heat exchanger can be
provided to keep crankcase oil temperature at 160
°
F
(71
°
C) by using an automatic water control valve.
This valve has a heat sensing probe in the crankcase
oil which controls water to the heat exchanger to
maintain oil temperature within limits.
STARTING A NEW PUMP
- The hood should be
removed, power end examined and cleaned if
necessary. Pump may have been in storage or in the
yard for some time and as a consequence, dirt or rust
from condensation may have formed in the
crankcase. Drain all water accumulation from the
bottom of crankcase. Check all nuts and screws and
tighten if necessary. Fill crankcase with oil of proper
grade to proper level. Quantity on the data plate
indicates the approximate oil requirement.
To prevent excessive wear on fluid pistons when
starting, remove the discharge valve cover plates and
discharge valves and prime the pump. The pump
should be started slowly and operated for 30 minutes
with little or no discharge pressure.
Check the oil level as it may be necessary to add a
small amount of oil to compensate for that adhering
to walls of the crankcase and moving parts.
The pump may then gradually be brought up to full
speed and full working pressure. Watch for undue
heating or abnormal noise in the working parts.
Check all joints in the suction line to be sure there are
no air or fluid leaks. Check for abnormal vibration
caused by improper suction conditions.
CAUTION
Priming is important! It lubricates the
piston and liners. If these parts are not
lubricated they could be severely damaged
in operation.
DANGER
The frame cradle safety cover, all guards
and all inspection plates must be securely
fastened in proper position before the
pump is started and not removed while in
operation to avoid personal injury and/or
death from moving parts.
WARNING
The oil should be checked for contamination
whenever pumped fluid sprays or splashes
against an oil stop head. This is especially
critical when the fluid contains salts or
solids, as these contaminants can plug
lubricating passages and cause rapid power
end failure.
WARNING
The GD-250 pump must be driven only in the
direction indicated on the frame to provide
adequate lubrication and prevent excessive
pump wear.
WARNING
Pumps are shipped from the factory without
oil in the crankcase
