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Textron Aviation 208 Series Maintenance Manual

R134aair conditioning- servicing
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1.
General
A.
The airplane may be equipped with R134a air conditioning system. This servicing procedure provides instructions for
system discharging, evacuating, charging, leak testing and checking compressor oil level with compressor installed on
airplane.
2.
Tools, Equipment and Materials
NOTE:
Equivalent substitutes may be used for the following listed items:
NAME
Continuity Tester
Ester Refrigerant Oil
Leak Detector,
Electronic
Leak Detector, Suds
Spray
Thermometer, Digital
Type, 0 to 150 degrees
Dry Nitrogen Regulated,
Dry
Refrigerant
Robinair Recovery and
Recycling Cart
Teflon Tape
Tension Gauge
Tensiometer
Compressor Oil
Dipstick
Acme Union, 1/4 inch
Machinists Universal
Level
Power Supply 28 VDC,
200 Amp minimum.
3.
General Precautions
A.
R134a Refrigerant Handling
WARNING: Observe safety precautions when handling refrigerant or servicing and performing maintenance
Copyright © Textron Aviation Inc.
Retain printed data for historical reference only. For future maintenance, use only current data.
R134A AIR CONDITIONING - SERVICING
(Airplanes 20800274 and On and 208B0655 and On)
NUMBER
MANUFACTURER
VOM
Commercially Available
Mobile EAL Arctic
Mobile Oil Corp.
Series 22
Interstate 10
Beaumont, TX 77704
16500
Robinair Mfg. Corp.
1224 Robinair Way
Montpelier, OH 43543-1933
Type F
Winton Products
Box 36332
Charlotte, NC
Commercially Available
Commercially Available
R134a
Commercially Available
P/N 34700 P/N
Robinair Mfg. Corp.
34560 with Flushing
1224 Robinair Way
Kit
Montpelier, OH 43543-1933
0.50 inch wide
Commercially Available
Kent-Moore BT-33-
Commercially Available
73F
Gates 150 (17599H) Gates Rubber Co.
2707 W. Douglas
Wichita, KS 67213
32447
Sanden International
10710 Sanden Drive
Dallas, TX 75328
Commercially Available
Commercially Available
Commercially Available
Model 208 Series Maintenance Manual (Rev 39)
USE
To troubleshoot electrical
system.
To lubricate compressor, fittings
and O-rings.
Used to detect refrigerant leaks.
Used to detect refrigerant leaks.
Used to check temperature
differential.
Used to check for leaks in
system.
Used to charge system.
Used to recover, recycle,
recharge and flush with optional
flushing kit.
Used to wrap lines.
Used to check belt tension.
Used to check belt tension.
Used to check compressor oil
level.
Used to connect regulated
nitrogen.
Used to check mounting angle
of compressor on airplane.
Used to provide power.
Print Date: Wed May 08 09:16:34 CDT 2024
12-16-02-3 (Rev 28)
Page 1 of 16

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Summary of Contents for Textron Aviation 208 Series

  • Page 1 Model 208 Series Maintenance Manual (Rev 39) 12-16-02-3 (Rev 28) R134A AIR CONDITIONING - SERVICING (Airplanes 20800274 and On and 208B0655 and On) General The airplane may be equipped with R134a air conditioning system. This servicing procedure provides instructions for system discharging, evacuating, charging, leak testing and checking compressor oil level with compressor installed on airplane.
  • Page 2 Model 208 Series Maintenance Manual (Rev 39) 12-16-02-3 (Rev 28) on air conditioning system. Care must be taken to minimize release of refrigerant into the atmosphere. The Environmental Protection Agency (EPA) requires recycling/recovery of 134A as of 11/15/95. All reclamation and recovery equipment must be EPA and UL listed. Use R134A reclamation system per manufacturers instructions, whenever evacuating system.
  • Page 3 Model 208 Series Maintenance Manual (Rev 39) 12-16-02-3 (Rev 28) (3) Remove cap from the service valve on low pressure side of system and connect the low pressure hose (blue) of the charging manifold. (4) Connect vacuum hose (yellow) to center of charging manifold.
  • Page 4 Model 208 Series Maintenance Manual (Rev 39) 12-16-02-3 (Rev 28) vacuum. CAUTION: Do not start engine at this time. Do not turn air conditioner on. (6) Ensure both high and low side manifold hand valves are closed. (7) Using a qualified assistant, start engine and adjust to ground idle.
  • Page 5 Model 208 Series Maintenance Manual (Rev 39) 12-16-02-3 (Rev 28) Air Conditioning System Leak Check (Refer to Figure 305). NOTE: This test assumes system is not charged. If system is charged, it must be discharged before proceeding. NOTE: The refrigeration system must be checked after assembly and prior to charging the system if vacuum cannot be held during evacuation.
  • Page 6 Model 208 Series Maintenance Manual (Rev 39) 12-16-02-3 (Rev 28) Figure 301 : Sheet 1 : R134a Air Conditioning Servicing Ports Copyright © Textron Aviation Inc. Page 6 of 16 Retain printed data for historical reference only. For future maintenance, use only current data.
  • Page 7 Model 208 Series Maintenance Manual (Rev 39) 12-16-02-3 (Rev 28) Figure 302 : Sheet 1 : R134a Charging Manifold Connections Copyright © Textron Aviation Inc. Page 7 of 16 Retain printed data for historical reference only. For future maintenance, use only current data.
  • Page 8 Model 208 Series Maintenance Manual (Rev 39) 12-16-02-3 (Rev 28) Figure 303 : Sheet 1 : R134a Compressor Oil Level Check Copyright © Textron Aviation Inc. Page 8 of 16 Retain printed data for historical reference only. For future maintenance, use only current data.
  • Page 9 Model 208 Series Maintenance Manual (Rev 39) 12-16-02-3 (Rev 28) Figure 303 : Sheet 2 : R134a Compressor Oil Level Check Copyright © Textron Aviation Inc. Page 9 of 16 Retain printed data for historical reference only. For future maintenance, use only current data.
  • Page 10 Model 208 Series Maintenance Manual (Rev 39) 12-16-02-3 (Rev 28) Figure 304 : Sheet 1 : Pressure Versus Temperature Chart Copyright © Textron Aviation Inc. Page 10 of 16 Retain printed data for historical reference only. For future maintenance, use only current data.
  • Page 11 Model 208 Series Maintenance Manual (Rev 39) 12-16-02-3 (Rev 28) Figure 305 : Sheet 1 : R134a Temperature and Pressure Chart Copyright © Textron Aviation Inc. Page 11 of 16 Retain printed data for historical reference only. For future maintenance, use only current data.
  • Page 12 Model 208 Series Maintenance Manual (Rev 39) 12-16-02-3 (Rev 28) Figure 2 : Sheet 1 : Model 208 Floorboard Access Plates/Panels Identification Copyright © Textron Aviation Inc. Page 12 of 16 Retain printed data for historical reference only. For future maintenance, use only current data.
  • Page 13 Model 208 Series Maintenance Manual (Rev 39) 12-16-02-3 (Rev 28) Figure 304 : Sheet 1 : Pressure Versus Temperature Chart Copyright © Textron Aviation Inc. Page 13 of 16 Retain printed data for historical reference only. For future maintenance, use only current data.
  • Page 14 Model 208 Series Maintenance Manual (Rev 39) 12-16-02-3 (Rev 28) Figure 304 : Sheet 2 : Pressure Versus Temperature Chart Copyright © Textron Aviation Inc. Page 14 of 16 Retain printed data for historical reference only. For future maintenance, use only current data.
  • Page 15 Model 208 Series Maintenance Manual (Rev 39) 12-16-02-3 (Rev 28) Figure 301 : Sheet 1 : Typical Air Conditioning Servicing Ports Copyright © Textron Aviation Inc. Page 15 of 16 Retain printed data for historical reference only. For future maintenance, use only current data.
  • Page 16 Model 208 Series Maintenance Manual (Rev 39) 12-16-02-3 (Rev 28) Figure 302 : Sheet 1 : Charging Manifold Connections Copyright © Textron Aviation Inc. Page 16 of 16 Retain printed data for historical reference only. For future maintenance, use only current data.

This manual is also suitable for:

208b