Service; Removing Wrapper; Replacing Switch; Replacing Fan Blade And/Or Motor - Cornelius CH750 Operator's & Installation Manual

!
WARNING:
Disconnect power to the unit before servicing. Follow all lock out/tag out procedures established by the user. Verify all
power is off to the unit before performing any work.
Failure to comply could result in serious injury, death or damage to the equipment.
Service of the chiller is limited to replacing the switch, the thermostat, the fan motor, and the pump. Charging and
other refrigeration problems must be performed by a qualified refrigeration technician.
R W
EMOVING RAPPER
1. Disconnect electrical power from the Unit.
2. Remove the seven screws from each side of the wrapper and the two screws that secure the wrapper to
the front and back panels. Retain all hardware and lift the wrapper off the Unit.
R S
EPLACING WITCH
1. Remove the wrapper as described above.
2. Remove the spade lugs from the existing switch and note connection points.
3. Remove the switch from the front panel.
4. Install the new switch in the front panel and connect the leads to the new switch.
5. Install the wrapper.
R F B
EPLACING AN
1. Remove the wrapper as described above.
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.
R P
EPLACING UMP
1. Remove the wrapper as described above.
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.
© 2002-2014, Cornelius Inc.

SERVICE

/ M
LADE AND OR OTOR
CH Series Chiller Operator's & Installation Manual
- 7 - Publication Number: 91256