Turbo Air TSD-27CF, Service Manual

CHEST FROZEN SHOWCASE 

TSD-47CF/TSD-60CF 

Overload Protector 

Repair Procedure 

1.

Check for continuity on overload protector, if open 

2.

Pull out Overload Protector. 

3.

Hold receptacle terminal then pull electrical wire from Overload 

Protector. 

4.

Replace overload protector. 

Cause Check 

Point 

Correction 

Compressor 

Check coils 

resistances 

Repair Procedure 

1.

Replace compressor if measured resistances differ from given standard 

2.

Abnormal noise 

Not cooling 

Check thermostat 
setting 

Repair Procedure 

1.

Operate unit for 10 minutes with thermostat set at maximum 

Insufficient cooling 

Check gasket gap 

Repair Procedure 

1.

Check if gap can be resolved by adjustment of door hinges fixing screws. 

2.

Defrost if accumulation of frost is more than 10mm. 

Malfunction due to 

leaks or clogged 

system 
 

Charged (purge) with 

nitrogen into the 

refrigeration system 
& check for leaks on 

welds or clogs 

Repair Procedure 

1.

Check for clog or leak in the cooling system.  

2.

Repair or replace the clogged or leak section.  

3.

Evacuate and change filter dryer. 

4.

Purge with nitrogen to clean and check for leaks 

5.

Recharge refrigerant, test run and seal system 

TROUBLE  INSPECTION  

CAUSES  

REMEDY 

Check electric power 
supply voltage 

Open circuit breaker or 
fuse                                        

Fix or replace 

Open Fuse  

Replace  

No Power 

Check electrical circuit 

Worn out or defective A/C 
cord 

Replace  

Check lamp 

Open 

Replace 

No Light 

Check lamps socket 

Corroded 

Replace 

Low Cooling 

Check for thermo setting 

Setting too low  

Set thermostat higher 

Deform or warp door 
gasket. 

Adjust door hinges fixing 
screws  

Check leaks 

Poor weld on joints 

Repair, purge with 
nitrogen  re-charge 
refrigerant and test run. 

Over storage or load or 
heavy frost accumulation 

Reduce or re-arrange 
load or defrost unit 

Defective Cooling 
System 

Check Thermostat 

Check if compressor runs 
by shortening thermostat  

Replace thermostat if 
compressor runs. 

Check PTC starter 
resistance against given 
value 

Open, no resistance or 
differ from given value 

Replace PTC starter. 

Check Overload Protector 

Check for continuity 

Replace if open. 

Check for leaks 

Leaks or poor welds  on 
joints 

Repair, re-weld, purge, 
evacuate and recharge 
refrigerant 

Check Compressor 
resistance against given 
specification 

Defective 

Replace, weld, purge, 
check for leaks and re-
charge refrigerant, test run 
and seal system 

Check Pipe System 

Clogged Pipe System or 

1. Evacuate then Purge