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Skymaster Mods & Parts
| Air Conditioning |
Description:
This is a typical Freon vapor cycle system utilizing a thermostatically controlled cycling clutch
compressor.
The carefully matched components consist of:
This system provides safeguards to protect against abnormal operation or failure.
A high pressure cut-off switch disengages the compressor if there is Freon pressure
buildup due to a blockage in the system. There is a low pressure cut-off switch which
does the same if there is a loss of Freon with a corresponding loss of compressor lubrication,
which may cause it to seize.
Electrical circuit protection is provided in case of abnormal system operation or circuit
breaker failure. Two each 5 AMP push pull circuit breakers, or breaker switches, provide
independent current for the condenser fan and compressor clutch. Since the circuits are
independent, if the Compressor circuit should fail, it may still be possible to use the evaporator
fan for auxiliary cabin air circulation.
On Pressurized Models, the condensation from the Evaporator/Blower assembly is drained via
a specially designed drain valve which prevents loss of cabin pressure.
This is a typical Freon vapor cycle system utilizing a thermostatically controlled cycling clutch
compressor.
The carefully matched components consist of:
- A compressor
- Driven by a belt from a pulley mounted on the prop flange of the rear engine
- Incorporates an electromagnetic clutch, which allows its operation to be controlled
by a thermostatic cut-off switch, (the control, labeled A/C TEMP) which senses
evaporator temperature and cycles the compressor on and off to control the
outlet temperature
- A condenser
- Installed in the rear engine air scoop
- A dryer
- An evaporator
- On ’63-72 models is located above the headliner next to the aft firewall. Air
distribution is provided by four-six large vents in the headliner, one for each of
the front seats and one each for the passenger seats. These vents can be
rotated and aimed in any direction or shut off for flow distribution. - On the ’73-80 models, the evaporator is located at the top of the baggage
compartment and covered with a shroud. - On ’73-80 P337 models the, the cooled air is routed via the normal air outlet
vents plus additional vents directed forward from the shroud. There is still
adequate room under the shroud for up to 6’4” tall passengers.
This system provides safeguards to protect against abnormal operation or failure.
A high pressure cut-off switch disengages the compressor if there is Freon pressure
buildup due to a blockage in the system. There is a low pressure cut-off switch which
does the same if there is a loss of Freon with a corresponding loss of compressor lubrication,
which may cause it to seize.
Electrical circuit protection is provided in case of abnormal system operation or circuit
breaker failure. Two each 5 AMP push pull circuit breakers, or breaker switches, provide
independent current for the condenser fan and compressor clutch. Since the circuits are
independent, if the Compressor circuit should fail, it may still be possible to use the evaporator
fan for auxiliary cabin air circulation.
On Pressurized Models, the condensation from the Evaporator/Blower assembly is drained via
a specially designed drain valve which prevents loss of cabin pressure.
| A-C outlets in ’63-‘72 Skymasters |
| A-C outlet over pilot seat in ’73-‘80 Skymasters |
| Climate control panel under the copilot instrument panel |
| Contact Us for more information |