AirComm Corporation Beechcraft Bonanza Maintenance Manual

  Products, L.P.                                    CR-36-10 System Service Manual 
 
C. Evacuating Procedure 
1) Connect R134a compatible recycling/recovery unit to the R134a service 
valves on the aircrafts air conditioning system.  If recovery unit does not 
have pressure gauges, connect service pressure to air conditioning 
system. 
2) Evacuate the air conditioning system in accordance with the recovery 
units instructions for a minimum of 15 minutes. 
3) Once the air conditioning system has been...

  Products, L.P.                                    CR-36-10 System Service Manual 
 
GENERAL SERVICING 
 
1. GENERAL 
 
General service procedures are provided to keep the air conditioning system 
operating at peek efficiency.  Procedures are provided for general maintenance 
tips, inspection intervals, maintenance of the plumbing system, to repair hoses, 
and to clean coils.  Procedures are also provided for removal and installation of 
the expansion valve. 
 
CAUTION: Do not operate air conditioning...

  Products, L.P.                                    CR-36-10 System Service Manual 
 
 
ITEM 
 
INSPECT FOR 
 
INTERVAL 
 
ACTION 
 
De-ice (if 
applicable) 
Resin cracking 
and crazing 
Brush contact per 
Beech service 
manual 
Every 100 hours or 
3 months 
 
Immediately replace 
or adjust brush 
contact 
 
Idler pulley bearing Resistance to 
rotation and any 
abnormalities 
Every time the 
propeller is 
removed 
 
Immediately replace  
 
Condenser Install. Run the cond. fan 
with battery pwr. 
and...

  Products, L.P.                                    CR-36-10 System Service Manual 
 
1. Hose should only be cut with a sharp knife.  (Note:  Use of serrated 
blades or saws to cut hose will leave particles that can contaminate 
system.) 
2. Insert the proper size die in the swaging tool. 
3. Insert fitting in swaging tool so that it is centered in the die and hand 
tighten. 
4. Insert hose in fitting until it bottoms (Note: Indicating hole is in base of 
fitting). 
5. Using impact wrench, tighten nut...

  Products, L.P.                                    CR-36-10 System Service Manual 
 
C. Coil Cleaning Procedure 
 
1. Use vacuum cleaner to remove large debris from upstream and 
downstream coil faces. 
2. Spray coil cleaner on both coil faces.  Wash off with water. 
3. Allow coil to dry thoroughly prior to additional maintenance. 
 
 
5. EXPANSION VALVE REMOVAL AND INSTALLATION 
 
A. General 
 
The following procedure is used to remove or install the air conditioning system 
expansion valve, located on...

  Products, L.P.                                    CR-36-10 System Service Manual 
 
TROUBLESHOOTING 
 
1. GENERAL 
 
The procedures below present troubleshooting charts for the air conditioning 
system and the compressor.  A diagnosis chart is presented for insufficient air 
conditioning system cooling.  The performance characteristics of an aircrafts 
particular system is dependent upon the design parameters of the systems 
components.  The performance of any one particular system varies with ambient...

  Products, L.P.                                    CR-36-10 System Service Manual 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
CHECK REFRIGERATION LINE FOR GAS LEAKS, AND REPAIR LEAKS IF ANY.  CHARGE REFRIGERANT TO CORRECT LEVEL.  IN CASE OF TOO MANY LEAKS, STOP COMPRESSOR, DISCHARGE THE SYSTEM, EVACUATE AND RECHARGE THE SYSTEM.  AS NECESSARY, REPLACE RECEIVER DRIER.  AIR IN THE SYSTEM MAY CAUSE BUBBLES IN SIGHT GLASS. 
BUBBLES IN SIGHT GLASS 
CONDENSER AIR TEMP TOO HIGH...

  Products, L.P.                                    CR-36-10 System Service Manual 
 
3. AIR CONDITIONING SYSTEM TROUBLESHOOTING 
  
 CONDITION 
 
SERVICE 
PRESSURE 
GAUGE READING 
 
 PROBABLE CAUSE 
 
CORRECTIVE 
ACTION 
 
INSUFFICIENT 
REFRIGERANT 
CHARGE 
 
Insufficient cooling.  
Bubbles appear in 
sight glass.   
 
SUCTION  
PRESSURE:  below 
normal 
 
DISCHARGE 
PRESSURE:  below 
normal 
 
 
Refrigerant is low, or leaking 
a little. 
 
 
1.  Leak test. 
2.  Repair leak. 
3.  Charge system....

  Products, L.P.                                    CR-36-10 System Service Manual 
  
 CONDITION 
 
SERVICE 
PRESSURE 
GAUGE READING 
 
 PROBABLE CAUSE 
 
CORRECTIVE 
ACTION 
 
AIR IN SYSTEM 
 
Insufficient cooling.  
 
Sight glass shows 
occasional bubbles.   
 
SUCTION  
PRESSURE:  above 
normal 
 
DISCHARGE 
PRESSURE:  above 
normal 
 
 
 
Air mixed with refrigerant in 
system. 
 
 
 
1.  Discharge system. 
2.  Replace receiver drier. 
3.  Evacuate and charge    
     system. 
 
 
MOISTURE IN SYSTEM...

  Products, L.P.                                    CR-36-10 System Service Manual 
  
 CONDITION 
 
SERVICE 
PRESSURE 
GAUGE READING 
 
 PROBABLE CAUSE 
 
CORRECTIVE 
ACTION 
 
FAULTY 
COMPRESSOR 
 
Insufficient cooling. 
 
 
 
SUCTION  
PRESSURE:  much 
below normal 
 
 
DISCHARGE 
PRESSURE: much  
below normal 
 
 
 
Internal problem in 
compressor, or damaged 
gasket and valve. 
 
 
 
1.  Discharge system. 
2.   Remove and check       
     compressor. 
3.  Repair or replace...