Ix. Troubleshooting Guide - Traulsen RAC3T Owner's Manual

PROBLEM
6. Condensing unit operates for prolonged
periods or continuously.
7. Start capacitor open or shorted or blown.
8. Run capacitor open, shorted or blown.
9. Relay defective or burned out.
10. Product zone temperature too high.
11. Suction line frosted or sweating.
12. Liquid line frosted or sweating.
13. Noisy condensing unit.
IX. TROUBLESHOOTING GUIDE (cont'd)
1. Shortage Of Refrigerant - Fix Leak, Add Charge
2. Control Contacts Stock or Frozen Closed - Clean Contacts or
3. Excessive Heat Load Placed Into Cabinet - Allow Unit
4. Prolonged or Too Frequent Door Openings - Plan or
5. Evaporator Coil Iced - Defrost
6. Restriction In Refrigeration System - Determine Locations &
7. Dirty Condenser - Clean Condenser
8. Filter Dirty - Clean or Replace
1. Relay Contacts Not Opening Properly - Clean Contacts or
2. Prolonged Operation On Start Cycle Due To:
3. Excessive Short Cycling - Determine Reason For Short
4. Improper Capacitor - Determine Correct Size
1. Improper Capacitor - Determine Correct Size & Replace
2. Excessively High Line Voltage (110% of rated max) -
1. Incorrect Relay - Check & Replace
2. Incorrect Mounting Angle - Remount Relay In Correct
3. Line Voltage Too High or Too Low - Determine Reason &
4. Excessive Short Cycling - Determine Reason (see #5 above)
5. Relay Being Influenced By Loose Vibrating Mounting -
6. Incorrect Run Capacitor - Replace With Proper Capacitor
1. Control Setting Too High - Reset Control
2. Inadequate Air Circulation - Rearrange Product Load To
1. Overcharge of refrigerant - Correct Charge
2. Evaporator Fan Not Running - Determine Reason & Correct
1. Restriction In Dehydrator or Strainer - Replace Part
2. Liquid Shut-Off (king valve) Partially Closed - Open Valve
1. Loose Parts or Mounting - Find & Tighten
2. Tubing Rattle - Reform To Free Of Contact
3. Bent Fan Blade Causing Vibration - Replace Blade
4. Fan Motor Bearing Worn - Replace Motor
POSSIBLE CAUSE/REMEDY
Replace Control
Sufficient Time For Removal Of Latent Heat
Organize Schedule To Correct Condition
Remove
Replace Relay If Necessary
a) Low Voltage To Unit - Determine Reason & Correct
b) Improper Relay - Replace
c) Starting Load Too High - Correct By Using Pump Down
Arrangement If Necessary
Cycling (see #5 above) And Correct
Determine Reason & Correct
Position
Correct
& Correct
Remount Rigidly
Improve Air Circulation
Fully
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