AirComm Corporation Bell Air Conditioner206L L1 L3 Single Dual evap L4 Single evap only Installation Instructions Insert ORing

INSTRUCTIONS FOR CONTINUED AIRWORTHINESS - 206EC-202M-1 
 
 
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9. REMOVE AND REPLACE AFT EVAPORATOR (Figure 14) 
 
9.1 REMOVE AFT EVAPORATOR 
a. Remove plastic Hat Rack from aft end of cabin. 
b. Open baggage door and remove oval ceiling panel. 
c. Recover refrigerant using Robinair Model 34700 Recover/Recycling/Recharge Station 
or equivalent. 
d. Remove Suction and Pressure hoses from evaporator. 
e. Install caps and plugs over outlets and...

INSTRUCTIONS FOR CONTINUED AIRWORTHINESS - 206EC-202M-1 
 
 
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10.  REMOVE AND REPLACE AFT EVAPORATOR BLOWER (Figure 14) 
 
10.1 REMOVE AFT EVAPORATOR BLOWER 
a. Open baggage door and remove oval ceiling panel. 
b. Disconnect electrical connector on blower. 
c. Remove all three flex ducts from blower housing and adapter. 
d. Remove AN525-10R8 screws that support blower. 
e. Remove blower through access panel opening in baggage...

INSTRUCTIONS FOR CONTINUED AIRWORTHINESS - 206EC-202M-1 
 
 
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11. REMOVE  AND  REPLACE CONDENSER  BLOWER  ASSEMBLY  (Figure 15 & 
Figure 16). 
 
11.1  REMOVE CONDENSER BLOWER ASSEMBLY 
a. Deactivate Air Conditioner circuit breaker on overhead circuit breaker panel. 
b. Working under aircraft beneath baggage compartment floor, remove 13ea AN525-
10R12 screws. 
c. Swing blower assembly down and disconnect Molex electrical connector. 
d. Remove 6 ea. AN525-10R8 screws MS21042L3 nuts...

INSTRUCTIONS FOR CONTINUED AIRWORTHINESS - 206EC-202M-1 
 
 
Revision F  Page 38 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Figure 15: Condenser Install 
Figure 16:  Condenser Install - VIEW C-C VIEW LOOKING UP
AN525-10R8 ScrewsMS21042L3 NutsNAS1149F0332P Washers          6 PlsS-7060EC-1Blower Assy
FWD
SECTION VIEW OF LEFT SIDE
155.8STA
Lower contour ofbelly panel
AN525-10R12 Screws          13 Pls  

INSTRUCTIONS FOR CONTINUED AIRWORTHINESS - 206EC-202M-1 
 
 
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Figure 17:  Condenser Install - View E-E 
  

INSTRUCTIONS FOR CONTINUED AIRWORTHINESS - 206EC-202M-1 
 
 
Revision F  Page 40 
 
12.2  REPLACING CONDENSER HEAT EXCHANGER 
a. Replacing the heat exchanger is the reverse of removal. 
b. Insert heat exchanger through the blower assembly opening. 
c. Secure heat exchanger in place using original hardware. 
d. Replace the ES44010-2 and -3 O-Rings in hose fittings and install hoses per 
instructions on page 277. 
e. Service with R134a refrigerant per CHAPTER 6. 
f. Reinstall condenser blower assembly per...

INSTRUCTIONS FOR CONTINUED AIRWORTHINESS - 206EC-202M-1 
 
 
Revision F  Page 41 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Figure 18:  Binary Switch - VIEW F-F 
 Binary Switch
Solenoid Bypass Valve
2X MS35275-240 Screw  
Drier/Receiver  

INSTRUCTIONS FOR CONTINUED AIRWORTHINESS - 206EC-202M-1 
 
 
Revision F  Page 42 
CHAPTER 8  
TROUBLESHOOTING 
 
1. SYSTEM TROUBLESHOOTING 
 
Prior to troubleshooting a defective system, it is advisable 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 matrix lists the easiest checks, and most likely problem sources, first. 
 
Problem Cause Solution 
Premature Belt Failure a. Belt...

INSTRUCTIONS FOR CONTINUED AIRWORTHINESS - 206EC-202M-1 
 
 
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3. SYSTEM CHARGE 
 
(See page 24, “Charging Procedures”) 
 
4. EXPANSION VALVE MALFUNCTION 
 
If the cooling loss is limited to only one evaporator, it is most likely a defective expansion 
valve. 
 
Loss of cooling in all evaporators (assuming that there were no problems identified during 
steps 1 or 2) could be caused by refrigerant flow blockage at the expansion valves. This 
blockage could be due to ice or dirt....

INSTRUCTIONS FOR CONTINUED AIRWORTHINESS-206EC 202M-1 
 
 
Revision F Page 44 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Figure 19:  Electrical Schematic Figure 7-1
Electrical Schematic
ACCA10B20N
ACCA13E20NACCA13D20
ACCA10E20N
ACCA10E20
ACCA1CB20
ACCA10A20
ACCA10B20
ACCP1A4
ACCA5B12
ACCA13C20N
ACCA11B20
ACCA7A12
ACCA2E14
ACCA9A18ACCA8A18ACCA5C12ACCA5D12N
ACCA7B18
ACCA7D18
ACCA7C18
ACCA12C18N
ACCA12B18
ACCA12A18
ACCA6B18ACCA6A12
ACCA12A20...