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Documents & Manuals

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Tensioning Guide
Belt-diagram
C-120 pulleys
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Work Order Templates

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Daily Electrical System Inspection
Replace Roller and Pulley
Install Engine B-120
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Procedures

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Motion Industries
Applied Industrial Technologies
Electrical Brothers
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Parts

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Drive Motor
B2 Rollers
Tensioning System
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Daikin Centrifugal Chiller WMC225D

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Maintenance Plans for Daikin Centrifugal Chiller Model WMC225D

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Chiller Seasonal Shutdown and Startup

DANGER: Wait 20 minutes after disconnecting power from unit before opening any compressor access covers. The DC link capacitors store enough energy to cause electrocution.

Seasonal Shutdown

CAUTION: The condenser and evaporator are not self-draining. Where the chiller can be subject to freezing temperatures, the condenser and evaporator must be drained of all water. Water permitted to remain in the piping and vessels can rupture these parts if subjected to freezing temperatures. Dry air blown through the vessels will aid in forcing all water out.

Except for freezing conditions, it is desirable to leave water in the vessels to avoid long term exposure to air.

Continuous forced circulation of antifreeze through the vessels is one method of avoiding freeze up.

Clean and Leak Test condenser tubes

Leak Test entire unit

Seasonal Startup

Seasonal startup procedures are as follows:

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3 Monthly Chiller Maintenance

Key:Performed by qualified service personnel

1)I. Compressor

A. Analyze Compressor Fault Log

B. Check IGV operation

2)II. MicroTech® II Controls

A. Check for proper settings; B. Verify transducers and sensors for accuracy; C. Retrieve and archive OITS Trend Logs; D. Perform MicroTech® II check, log, and last fault analysis

3)III. Condenser

A. Confirm correct water flow and pressure drop

4)IV. Evaporator

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1 Yearly Chiller Inspection

DANGER

Wait 20 minutes after disconnecting power from unit before opening any compressor access covers. The DC link capacitors store enough energy to cause electrocution.

Key:Performed by qualified service personnel

I. Compressor

D. Check and tighten compressor electrical connections

VII. Electrical

C. Check and tighten unit electrical components;

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Chiller Electrical System Maintenance

DANGER: Wait 20 minutes after disconnecting power from unit before opening any compressor access covers. The DC link capacitors store enough energy to cause electrocution.

Are all connections clean and tight?

Do pump interlocks and flow switches interrupt the control circuit when tripped?

Sign off on the electrical system maintenance

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Chiller Strainer Cleaning

DANGER: Wait 20 minutes after disconnecting power from unit before opening any compressor access covers. The DC link capacitors store enough energy to cause electrocution.

A common cause of service calls and equipment malfunction is dirt. This can be prevented with normal maintenance.

The system components most subject to dirt are:

Strainers: Remove and clean strainers in the chilled water system

Strainers: Remove and clean strainers in the condenser water system

Sign off on the chiller strainer cleaning

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