Bell & Gossett DN0177 B Domestic Pump Centrifugal Pumps Series C35 - Manual (Page 16)

Maintenance
General maintenance guidelines
Lubrication requirements
The pumps require no lubrication.
Check the motor nameplate for motor lubrication requirements.
Auto restart
Single-phase motors will restart automatically after the thermal overload protector trips.
You must manually reset overload thermal relays in starters.
Periodic checks
A properly installed unit should function unattended for long periods of time. Periodic
checks to assure proper operation are highly recommended. Refer to the Troubleshooting
section when necessary.
WARNING:
The installed boiler feed pump becomes an integral part of the boiler system. Boiler
operation and maintenance require specific skills and training and may require licensing or
certification. The boiler feed unit must be operated and maintained so as not to jeopardize
the boiler operation.
CAUTION:
A unit that shows symptoms of possible problems, such as overflow, noise, leaks,
vibrations, or continual operation, must be corrected immediately.
Disassembly
Disassembly precautions
WARNING:
• This manual clearly identifies 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.
Maintenance
14 Domestic ® Pumps Centrifugal Pumps Series B35, C17, C35 Installation, Operation, and Maintenance Manual