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CH Series Chiller Operator’s & Installation Manual

MAINTENANCE

The chiller requires very little normal maintenance. The condenser fins should be cleaned by blowing

compressed air through the condenser. from the fan side as required to prevent blockage of air flow by dirt and

debris that may accumulate over time. The positive displacement pump motor should be lubricated with ten drops

of SAE 10 oil once each year. The circulation system should be drained and flushed periodically to avoid build up

and possible restriction of flow by contaminants. Following these simple procedures will ensure many trouble free

hours of chiller operation.

SERVICE

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.

REMOVING WRAPPER

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.

REPLACING SWITCH

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.

REPLACING FAN BLADE AND/OR MOTOR

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.

REPLACING PUMP

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.

WARNING: Disconnect electrical power from the unit before performing any of the

following maintenance procedures.

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Cornelius CH Series Installationshandbuch Seite 7