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Documents & Manuals

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Tensioning Guide
Belt-diagram
C-120 pulleys
+ 13 more

Work Order Templates

Pre-built workflows to keep your asset running smoothly.

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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Trane Series R™ Helical Rotary Chiller RTAC275X

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Maintenance Plans for Trane Series R™ Helical Rotary Chiller Model RTAC275X

Integrate maintenance plans directly into your work orders in MaintainX.

1 Monthly Series R™ Helical Rotary Chiller Maintenance

Perform all weekly maintenance procedures

Record the system subcooling

Make any repairs necessary

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Refrigerant and Oil Charge Management

Proper oil and refrigerant charge is essential for proper unit operation, unit perfor-mance, and environmental protection. Only trained and licensed service personnal should service the chiller.

Some symptoms of a refrigerant under-charged unit:

• Low subcooling

• Higher than normal discharge superheat

• Bubbles in EXV sight glass

• Low liquid level diagnostic

• Larger than normal evaporator approach temperatures (leaving water temperature - saturated evaporator temperature)

• Low evaporator refrigerant temperature limit

• Low refrigerant temperature cutout diagnostic

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Low Side Charge Isolation

Circuit is off

Suction line isolation valve is closed

Oil return line service valve is closed

Liquid line service valve is closed

EXV is manually opened

Select the method used to move refrigerant from the condenser to evaporator

NOTE: If a pump is to be used, connect it before closing this valve. This port is only isolated when the valve is back seated. If a vacuum pump is used, then connect it to the discharge line service valve near the oil separator.

Evaporator is large enough to hold all the charge for any unit to below the center-line of the shell

Sign off on the Low Side Charge Isolation

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Neoprene Isolator Replacement

Secure the isolators to the mounting surface using the mounting slots in the isolator base plate

Align the mounting holes in the base of the unit with the threaded positioning pins on the top of the isolators

Lower the unit onto the isolators and secure the isolator to the unit with a nut

Enter the isolator deflection (should be 1/4 inch or 6 mm)

Level the unit carefully

Fully tighten the isolator mounting bolts

Sign off on the isolator replacement

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High Side Charge Isolation

Circuit is off

Liquid line service valve is shut

Oil return line service valve is shut

Circuit started with the service tool (access compressor service view in Techview)

Discharge check valve closed after unit trip

Discharge isolation valve is closed

Oil line shut off valve is closed

Remainder of the refrigerant recovered

NOTE: Remaining vapor can be recovered/stored in the high side of the system. Be certain to follow proper recovery procedures to avoid introduction of non-condensable gases.

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