Bell & Gossett P58725B Series 1535C Close Coupled Centrifugal Pump - Manual (Page 3)

OPERATIONAL INSTRUCTIONS
SYSTEM PREPARATION
Prior to pump start up, closed heating and cooling systems
should be flushed with clean water and drained. The system
should then be filled with clean water having a PH between 7
and 9.
LUBRICATION
Series 1535C pumps are test run and lubricated at the factory.
Motor bearings for the Series 1535C pumps do not require
greasing.
ROTATION
Pump rotation is clockwise when viewed from the back of the
motor. An arrow is provided to show the rotational direction.
PRIMING AND STARTING
Before starting, the Series 1535C pump must be filled with
water. Manual priming may be necessary if the system does
not fill the pump body automatically. Vent plugs are provided
on the pump body to vent the air.
The pump should be started with the discharge valve closed
and the suction valve fully open. After the pump is at operating
speed, the discharge valve should be opened gradually.
Do not attempt to prime a pump while it is running by letting
water into it through its discharge pipe. This is an unsatisfac-
tory method that could damage the pump or motor or possibly
blow out a fuse.
SERVICE INSTRUCTIONS
GENERAL INSTRUCTIONS
If the pump is to be exposed to freezing temperatures, drain
all fluids from the pump.
PERIODIC INSPECTION
Inspect the pump regularly for leaking seals, worn gaskets,
and loose or damaged components. Replace or repair as
required.
REPLACING THE SEAL
The electrical supply must be disconnected and locked out of
service. Loosen the conduit box cover screws and remove the
cover. Disconnect conduit and wiring.
Close the valves on the suction and discharge sides of the
pump (if no valves have been installed, it will be necessary to
drain the system).
Loosen the volute capscrews but do not remove them. Shift
the pump position slightly to allow any pressurized water to
escape.
Remove the volute capscrews and remove the pump assem-
bly from the pump volute.
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CAUTION: Seal Damage Hazard
Do not run the pump dry – seal damage may occur.
Failure to follow these instructions could result in moderate
personal injury and/or property damage.
WARNING: Hot Water Leakage Hazard
Pressurize the pump body slowly while checking for
leaks at all joints with gaskets.
Failure to follow these instructions could result in serious
personal injury and/or property damage.
WARNING: Electrical Shock Hazard
Disconnect and lockout the power before servicing.
Failure to follow these instructions could result in serious
personal injury or death.
WARNING: Unexpected Start-Up Hazard
Disconnect and lockout power before servicing.
Failure to follow these instructions could result in serious
personal injury, death and/or property damage.
CAUTION: Extreme Temperature Hazard
Allow the pump temperature to reach an acceptable
level before proceeding. Open the drain valve and do not
proceed until the liquid has completely drained. If the liquid
does not stop flowing from the drain valve, then the isola-
tion valves are not sealing and should be repaired before
continuing. After the liquid has stopped flowing, leave the
drain valve open and continue. Remove the drain plug
located on the bottom of the pump volute. Do not reinstall
this plug or close the drain valve until the reassembly is
complete.
Failure to follow these instructions could result in moderate
personal injury and/or property damage.
WARNING: Excessive Pressure Hazard
Make certain that the internal pressure is relieved
before continuing.
Failure to follow these instructions could result in serious
personal injury and/or property damage.