- OBJECTIVE:
To lay down procedure for the operation of Water Cooled Chiller.
- SCOPE:
This SOP is applicable for the operation of Water Cooled Chiller at {Company Name} {Company Location}.
- RESPONSIBILITY:
- Technical Assistant – Engineering is responsible for operating the equipment as per the SOP.
- HOD/Executive – Engineering is ensure the compliance as per SOP.
- ACCOUNTABILITY:
Engineering Head
Head Quality Assurance
- PROCEDURE:
- Precautions:
- Check the level of soft water in the overhead tank, it should be 3/4th or above, if needed fill with soft water.
- Check the cooling tower water level which should be above half level.
- Ensure that the suction and delivery valves of chilled water circulation pumps and cooling water pump are open.
- Ensure cooling towers and chilled water tank make-up water line valves are in open position.
- Ensure condenser and evaporator in & outlet lines valves are in open position
- Ensure power supply to panel.Check and ensure the oil level as per the mark given on the view glass.
- PRE START UP
- Switch on the input power supply of the chiller.
- Start the cooling water pumps and related cooling tower fans.
- Start the chilled water circulation pumps one by one based on plant load.
- Check and ensure no air lock occurred in the chilled water distribution loop
- STARTING PROCEDURE
- Before starting the unit, ensure that all AHU’s are in OFF condition, but valves should be in OPEN condition.
- Any set points which are desired to be changed may be programmed.
- All Control Center set points should be programmed before the chiller is started.
- Maintain the required inlet chilled water pressure. If the flow rate is less than minimum rated flow (3 kg/cm2), the flow switch will be tripped off the system.
- After getting the flow press and then touch local ON button in MMI and then start the chiller.
- When the chilled water temperature reaches 6.5ºC, and then starts the AHU’s.
- Set chilled water outlet temperaure NLT 5℃
- Every two hours note down the readings as per enclosed Annexure-I.
- STOPPING PROCEDURE:
- Press the and then touch STOP button and then stop the chiller.After 1 to 2 minutes the system will be shut down completely.Switch off the chiller pumps and cooling tower pumps.
- Switch off the cooling tower fans.
- REFERENCES:
Not Applicable
- ANNEXURES:
| ANNEXURE No. | TITLE OF ANNEXURE |
| Annexure-I | Water Cooled Chiller Log Sheet |
ENCLOSURES: SOP Training Record.
- DISTRIBUTION:
- Controlled Copy No. 01 Head Quality Assurance
- Controlled Copy No. 02 Head-Engineering
- Master Copy Quality Assurance Department
- ABBREVIATIONS:
AHU : Air Handling Units.
MMI : Man, Machine Interface
- REVISION HISTORY:
CHANGE HISTORY LOG
| Revision No. | Details of Changes | Reason for Change | Effective Date |
| 00 | New SOP | Not Applicable | To be written manual |
ANNEXURE-I
WATER COOLED CHILLER LOG SHEET
