Recommended Maintenance; Monthly; Semi-Annually; Annually - Trane TR-SCS Series Installation, Operation And Maintenance Manual

Symptoms
Unit Fails to Start
Control is Erratic
Low condenser airflow. (Indicated by excessive warm
Condenser Head Pressure
Too High
Condenser Fan not
Operating
Loss of refrigerant (indicated by bubbles in sight glass)
Condenser Head Pressure
Too Low
Low condenser airflow. (Indicated by excessive warm
Head Pressure Too High
Erratic Fan Operation

Recommended Maintenance

Monthly

1. Check for filter cleanliness.
2. Inspect fan rotation.
3. Have the drain open.
4. Check for condensate pan safety and switch operates
free.
5. Clean coils and clear obstructions.
6. Check chilled water/hot water circuits for air (bleed as
required).
7. Ensure humidifier cylinder and controls operate
properly.

Semi-Annually

1. Ensure tighten electrical connections.
2. Check contacts on contactors for pitting.
3. Heat/Reheat operational.
4. Clean unit as necessary and clean coils.
5. Clean condensate pump.
6. Inspect and clean CW screen.
SS-SVX006C-EN
Probable Cause
Incorrect phasing or voltage
Power failure
Overload protection tripped
Wiring improperly connected or broken
air leaving the condenser fan).
Overcharge of refrigerant
Condenser fan not operating
Non-condensable gas or air in the system
Condenser fan controls not set properly
air leaving the condenser fan).
Air or other non-condensable gas in system
Overcharge of refrigerant
Condenser fan not on
Dirty or blocked condenser coil
Recommendation
Correct phase or voltage input
Check power source, power input and fuses. Check control
cables and connections.
Check pressure/temperature operating switches and
motor. Replace as needed.
Check wiring against schematic diagram
Open air passages. Clean coil. Check condenser fan(s)
Reclaim excess refrigerant from system
Check main voltage power source to unit.
Check fan motor, contractor, fan cycling switch or fan
speed controller.
Check pressure/temperature operating switches and
motor. Replace if needed.
Reclaim system, pull 500-micron vacuum and recharge.
Install new drier/strainer.
Locate and repair leak. Recharge system
Adjust or repair controls
Open air passages
Check condenser fan(s)
Reclaim system and recharge. Install a new drier strainer.
Reclaim excess refrigerant from system
Check main voltage power source to unit.
Check fan, contactor, fan cycling switch or fan speed
Clean coil or remove blockage

Annually

1. Inspect chilled water system for leaks and corrosion.
2. Conduct a complete check of all services listed
aboveand clean the interior of the units.
Maintenance
Clean coil
controller.
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