Bell and Gossett ecocirc 19-16, Инструкция по эксплуатации

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6 Maintenance
6.1 Precautions
Electrical Hazard:
Disconnect and lock out electrical power before installing or
servicing the unit.
WARNING:
• Always wear protective gloves when handling the pumps
and motor. When pumping hot liquids, the pump and its
parts may exceed 40°C (104°F).
• Maintenance and service must be performed by skilled and
qualified personnel only.
• Observe accident prevention regulations in force.
6.2 Disassemble the pump
1. Shut off supply and drain lines.
If there are no shut-off valves installed, drain the system so that the fluid level
drops below the pump suction level.
2. Loosen and remove the screws with an allen key.
3. Pull the motor out of the pump housing.
Residual water may leak out of the motor cavity. Protect the pump’s electrical
connections from getting wet.
4. Pull the rotor/impeller upwards by hand and remove it.
The pump body can be left connected to the system.
5. Clean any foreign objects or impurities and reinsert the rotor/impeller.
If the rotor/impeller does not move freely or if there are wear marks visible,
that is an indication of bearing failure. Replace the pump.
6. Replace the motor in the pump housing.
7. Replace the screws.
8. Reopen supply and drain lines and fill system.
See
Figure 7: Maintenance on page 25 for more information.
6 Maintenance
20 ecocirc ® 19-16 INSTRUCTION MANUAL