AirComm Corporation Bell Air Conditioner206AB Installation Instructions TORQLOK PLUMBING

  Page 10 of 21 
 206EC-250M 
 Rev E 
Fitting Torquing Procedures and Torque Values 
 
 
Insert O-Ring Fitting (Green O-Ring)     Torq-Lok Fitting (Black O-Ring) 
 
    Apply refrigerant oil to O-ring and female side of fitting. 
    Confirm there is no damage / nicks or dirt on fittings. 
    Slide B-nut back away from end of tube so you may see 
    O-ring as you slide the fitting together. 
 
 
 
     Be careful not to pinch O-ring. 
    Engage male end into female fitting being very careful to...

  Page 11 of 21 
 206EC-250M 
 Rev E 
 
System Leak Check (cont)  
 
The system should be leak tested using an electronic leak detector. Initial leak check can be 
accomplished with a refrigerant charge of .5 lbs and the electronic leak detector. Each fitting 
should be checked and repaired prior to the final charging process. 
Do not use compressed air for the pressure check! Compressed air can introduce moisture 
in the system which will cause it to operate poorly or not at all. Take your time, and...

  Page 12 of 21 
 206EC-250M 
 Rev E 
 
System troubleshooting 
 
Prior to troubleshooting a defective system, conduct a visual inspection for general 
condition. Inspect condenser fins for damage, comb out bent fins, and Check circuit 
breakers in baggage compartment. 
 
The following step-by-step procedures list the easiest checks, and most likely problem 
sources, first. 
 
1. Electrical 
 
With the engine off turn switch to “Blower” and make sure all evaporator blowers 
operate in both Hi and Low...

  Page 13 of 21 
 206EC-250M 
 Rev E 
 
SYSTEM TROUBLESHOOTING TABLE 
 
Problem Cause Solution 
 
1. Premature Belt Failure  a.  Belt too loose 
b. Compressor misalign. 
c.  System over charged a.  Adjust belt tension 
b. Re-install/align 
compressor 
c.  Adjust system charge 
2. Condenser blower motor 
Circuit Breaker “Pops” a. Probable cause- 
Overheating of condenser 
blower motor a. Check for loose or rubbing 
of fan blade, or possible 
replacement of motor 
3. Water (Condensate) in area 
of the aft...

  Page 14 of 21 
 206EC-250M 
 Rev E 
 
PERIODIC INSPECTIONS AND OVERHAUL SCHEDULE 
 
Item  Prior to  
Cooling  
Season Every 
100 hr. 
Operation Overhaul / 
Replacement 
Hours 
3 
 
    
Check Evap. Blower 
Operation Hi/Low X X  
    
Check Cond. Blower 
Operation X X  
    
Belt wear & Tension 
1 X X  
    
Condenser Fins  X  X   
    
Placards    
    
Compressor Mounting 
Lugs For Cracks X X  
    
Condenser Blower 
Motor - - On Condition 
 
Replace Belt 2      When evidence of excessive wear...

  Page 15 of 21 
 206EC-250M 
 Rev E 
 
 
 
General Arran
gement – Air Conditioner S
ystem with sin
gle Forward Eva
porato
r  

  Page 16 of 21 
 206EC-250M 
 Rev E 
 
 
 
General Arrangement – Air Conditioning System with Dual Forward Evaporator  

  Page 17 of 21 
 206EC-250M 
 Rev E 
 
 
General Arrangement – Electrical Systems Components  

  Page 18 of 21 
 206EC-250M 
 Rev E 
 
  

  Page 19 of 21 
 206EC-250M 
 Rev E