CHILLER UNIT

1. PURPOSE

It is established to ensure the required transmission of chilled water in the different departments of production.

2. SCOPE

It is applicable in the different production departments wherever chilled water is required.
3. RESPONSIBILITY

Maintenance officer (Mechanical / Electrical)
Maintenance Supervisor (Mechanical / Electrical)

4 PROCEDURE

The Chiller with instrument is handled in the following way.

CLEANING:

Clean the chiller with clean cloth to remove dust.
Wash chillers once a week with plain water.
The machine operator/section Incharge will maintain the machinery/equipment cleaning logbook.

STARTUP & OPERATION:

lways keep the switch to “ON” position
Checks the compressor heaters are working properly.
Check all the pumps & electric circuits are in proper working condition.
Check all the valves, gauges are in proper working condition.
Check the water flow and level in the water storage tank.
Check the gauge, valves pumps abnormal noise etc time to time to meet any kind of emergency.
After checking all the pumps, gauges, valves etc. Start the chiller to “ON”.

5 MAINTENANCE

MONITORING OF MACHINE MAINTENANCE:

Time to time check each and every part of Chiller Unit according to the maintenance schedule.
Check the following parts carefully.
 Electric motor
 Condenser
 Electric Fan
 Magnetic Contactor, Timer
 Gas Pressure (R 22)
 Pressure Switch
 Temperature Sensor
 Oil Level
 Heater
 Solenoid Valve
This activity is then documented in the form Machinery & Equipment Maintenance Log
Check the Chiller Unit condition time to time to find any kind of problem during operation.
All the monitoring record is filed and kept by the Maintenance Supervisor.
EMERGENCY / BREAKDOWN MONITORING:

Maintenance Manager receives Maintenance Work Order duly signed by the section incharge of the concerned machinery or equipment.
Maintenance Work Order is assigned a number according to the receiving in the Maintenance Reference Register.
Maintenance Manager assigns the maintenance work to the concerned personal
After the completion of work the section incharge signs the completion of Work Order.
All the record is filed and kept by the Maintenance Supervisor.

PRECAUTIONS:

Never ever switch to “OFF” the main electric supply of the chiller.
If the compressor base heaters are not working properly never ever start that chiller.
If any kind of abnormality in (water flow, noise, pumps, gauges etc.) occurs during operations, shut down that chiller and report to the concerned departments.
Change water of the water storage tank, if dirty.
Stay at your department to meet any kind of emergency.