Replacing Thermostat; Replacing Fan Blade And/Or Motor; Replacing Pump - Cornelius CH 551 Operator's & Installation Manual

CH550 and CH551 Chiller Operator's & Installation Manual

Replacing Thermostat

Remove the wrapper, as described in Removing Wrapper.
1.
2. Loosen the screw terminals securing the wires at the rear of the thermostat. Note connection points
and remove the wires.
3. Remove the screw securing the mounting bracket to the back of the thermostat.
4. Remove the thermostat from the front panel.
5. Install the new thermostat in the front panel and secure it with the mounting bracket.
6. Reconnect the wires at back of the thermostat.
7. Install the wrapper.

Replacing Fan Blade and/or Motor

Remove the wrapper, as specified in Removing Wrapper.
1.
2. Remove the screws securing the fan guard to the fan shroud.
3. Remove the conduit connection at the back of the motor and disconnect the wire leads.
4. Remove the bolts securing the fan mounting bracket to the base and remove the fan/motor
assembly.
5. Separate the fan blade from the motor and install the new blade or motor.
6. Re-install the fan mounting bracket and fan guard. Re-connect the wire leads and conduit
connection.
7. Install the wrapper.

Replacing Pump

Remove the wrapper, as specified in Removing Wrapper.
1.
2. Remove the clamps and hoses from the suction and discharge of the pump.
3. Remove the screws securing the pump to the base.
4. Disconnect the wire leads from the pump motor and remove the pump.
5. Remove all fittings from the pump and install them on the new pump.
6. Install the pump and re-connect wire leads and hoses.
7. Install the wrapper.
Publication Number: 91272 - 4 - © 2002-2010, IMI Cornelius Inc.