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Chiller

The document provides a checklist for performing preventative maintenance on a chiller. It lists 16 steps to complete the maintenance, including locking out power sources, checking electrical connections, cleaning components, ensuring proper functioning of gauges, fans, and valves, and recording temperature and pressure readings before and after maintenance. The goal is to clean and inspect the chiller to identify any issues and ensure safe and efficient ongoing operation.

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316 views2 pages

Chiller

The document provides a checklist for performing preventative maintenance on a chiller. It lists 16 steps to complete the maintenance, including locking out power sources, checking electrical connections, cleaning components, ensuring proper functioning of gauges, fans, and valves, and recording temperature and pressure readings before and after maintenance. The goal is to clean and inspect the chiller to identify any issues and ensure safe and efficient ongoing operation.

Uploaded by

siruslara6491
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as XLS, PDF, TXT or read online on Scribd
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PPM Check List for Chiller

Chiller No.
Sl. No Description YES NO Observation / Remarks
1 Isolate the incoming source and apply LOTO.

2 Make sure that supply is not available at the i/p terminal of the equipment

3 Check the Local isolator switch and tighten all the cable connections

4 Clean the main Control panel and tight all the electrical connections.

5 Check the operation of Crank case Heater

6 Check for any cable colour change at panel in the chiller.

Clean "Power & Control panels / Compressor / Flow switch / Actuator "
7
thoroughly with cotton cloth.

8 Check all the connections of BMS

9 Ensure functioning of pressure gauges and temperature gauges.

Review and log the "Evaporator Approach Temperature". It should be less than 7
10
deg F.

Check and Log the water pressure drop across the Evaporator. It should not be
11
more than 0.5 kg/sqcm (difference between Inlet & Outlet water pressure).

12 Clean "Condensor fins / Insulated pipelines/ Supporting frames" with water jet.

Check the Automatic Actuator valve properly functioning,and ensure the full
13
opening of the Actuator.Check the Acutator in Manual mode also.

Check all condensor fans (24 Nos ) are functioning at full load.Check the O/L relay
14
setting setted as 3.5 A

15 Removed the LOTO and switch on and take the necessary readings

16 House keeping after PM completed

Done by : Spares used

PM done On :

Next PM due On :

Start Time :

End time :
Last month Reading after
Sl.No. Description Present Reading after PM
PM
1 Evaprator Leaving Water Temperature ('c)
2 Evaprator Entering Water Temperature ('c)
3 Chilled Water Supply Header Temp. ('c)
4 Ambient Temperature ('c)

COMPRESSOR READINGS
5 Load Current (Amps)
1A
1B
2A
2B
6 Intermediate Oil Pressure(kpa)
1A
1B
2A
2B
7 Run Hours
1A
1B
2A
2B
REFRIGERANT READINGS
8 Condenser Refrigerant Pressure(kpa)
CKT 1
CKT 2
9 Evaporator Refrigerant Pressure(kpa)
CKT 1
CKT 2
10 Condenser Refrigerant Temp
CKT 1
CKT 2
11 Evaporator Refrigerant Temp
CKT 1
CKT 2
12 Evaprator Approach Temperature('c)
CKT 1
CKT 2
13 Refrigerant Liquid Level
CKT 1
CKT 2

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