Bell & Gossett P2000452 Series 580 - Manual (Page 19)

Maintenance
Lubrication
The pump motor has been lubricated at the factory. Keep the motor properly lubricated in accordance
with the motor manufacturer's instructions.
Disassembly
Disassembly precautions
WARNING:
• Installation, Operation, and Maintenance manuals clearly identify accepted methods for disassembling
units. These methods must be adhered to. Trapped liquid can rapidly expand and result in a violent
explosion and injury. Never apply heat to impellers, propellers, or their retaining devices to aid in their
removal.
• Make sure that the pump is isolated from the system and that pressure is relieved before you
disassemble the pump, remove plugs, open vent or drain valves, or disconnect the piping.
• Always disconnect and lock out power to the driver before you perform any installation or
maintenance tasks. Failure to disconnect and lock out driver power will result in serious physical
injury.
• Crush hazard. The unit and the components can be heavy. Use proper lifting methods and wear steel-
toed shoes at all times.
NOTICE:
Make sure that all replacement parts are available before you disassemble the pump for overhaul.
Drain the pump
CAUTION:
• Allow all system and pump components to cool before you handle them to prevent physical injury.
1. Close the isolation valves on the suction and discharge sides of the pump.
You must drain the system if no valves are installed.
2. Open the drain valve.
Do not proceed until liquid stops coming out of the drain valve. If liquid continues to flow from the
drain valve, the isolation valves are not sealing properly and you must repair them before you proceed.
3. Leave the drain valve open and remove the drain plug located on the bottom of the pump housing.
Do not reinstall the plug or close the drain valve until the reassembly is complete.
4. Drain the liquid from the piping and flush the pump if it is necessary.
5. Disconnect all auxiliary piping and tubing.
Remove the pump assembly
1. Loosen the volute capscrews but do not remove them.
2. Use the capscrews in the jackscrew holes in order to loosen the pump assembly from the volute.
WARNING:
Pressurized device. Make sure that the internal pressure is relieved before you continue.
Maintenance
Series 580 Installation, Operation, and Maintenance Manual 17