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TOUCH THE DISTRIBUTOR VALVE. THE DISTRIBUTOR VALVE
GETS HOT.
(3) Make sure that the flap is hard against the bottom
of the of the distributor valve.
Reach through the outlet hole for the
pilots' footwells in the floor panel. Push
against the bottom of the flap. Then let
it return.
AIRCRAFT
Air Conditioning DA 40 Series
AMM
Page 208
20 Sep 2007 21-00-00 Doc # 6.02.01
Rev. 5
Detail Steps/Work Items Key Items/References
(4) Set the distribution control lever in the cockpit
to –.
There should be 'bounce' of about
3 mm (0.1 in) between the back of the
lever and the cockpit stop.
(5) Make sure that the flap is hard against the top of
the of the distributor valve.
Reach through the outlet hole for the
pilots' footwells in the floor panel.
(6) If the valve is not correctly adjusted, do the
following items.
(7) Remove the heat valve. Refer to Paragraph 2.
(8) Adjust the control cable in the swivel fitting to give
the correct bounce:
S Set the distribution control lever close to •.
S Loosen the screw in the swivel fitting.
S Move the flap a small distance.
S Tighten the screw in the swivel fitting.
Access through the front of the valve.
If there was no bounce in the
• position, then move the flap down. If
there was too much bounce in the
• position, then move the flap up.
(9) Set the distribution control lever in the cockpit
to •.
There must be 'bounce' of about 3 mm
(0.1 in) between the back of the lever
and the cockpit stop.
Note: If you cannot get bounce at both ends of the range of movement, adjust the
cable to give bounce at the • (defrost) end.
(10) Do items 8 and 9 as necessary to get the correct
adjustment.
(11) Install the heat valve.
AIRCRAFT
DA 40 Series
AMM
Air Conditioning
Doc # 6.02.01
Rev. 5 21-00-00 Page 209
20 Sep 2007
6. Remove/Install the Heat Exchanger Shroud
A. Remove the Heat Exchanger Shroud
Detail Steps/Work Items Key Items/References
(1) Remove the engine cowlings. Refer to Section 71-10.
WARNING: IF THE ENGINE HAS BEEN RUNNING, TAKE CARE WHEN YOU
TOUCH THE HEAT EXCHANGER. THE HEAT EXCHANGER GETS
HOT.
(2) Release the 2 worm drive clamps which attach
the inlet and outlet hoses to the heat exchanger.
Disconnect the hoses.
Refer to Figure 4.
(3) Release the screws which hold the flanges of the
shroud together and remove the shroud from the
muffler.
B. Install the Heat Exchanger Shroud
Detail Steps/Work Items Key Items/References
(1) Put the shroud in position on the muffler with the
flanged joint at the top back.
Refer to Figure 4. The inlet connection
points forward on the right. The outlet
connection points aft near the middle at
the back.
(2) Install the screws which hold the flanges of the
shroud together.
(3) Connect the inlet and outlet hoses to the heat
exchanger.
(4) Tighten the 2 worm-drive-clamps which hold the
hoses.
(5) Install the engine cowlings. Refer to Section 71-10.
AIRCRAFT
Air Conditioning DA 40 Series
AMM
Page 210
20 Sep 2007 21-00-00 Doc # 6.02.01
Rev. 5
Bolted Joint for
Heat Exchanger Shroud
Air Inlet to
Heat Exchanger
Exhaust Outlet
Hot Air Outlet
from Heat Exchanger
Exhaust
Muffler
Heat Exchanger Shroud
Inspect these
Welded Joints
Look for Soot Marks
and Cracks
Look for Soot
Marks and Cracks
Inspect these
Welded Joints
Figure 4: Heat Exchanger Installation and Inspection
AIRCRAFT
DA 40 Series
AMM
Air Conditioning
Doc # 6.02.01
Rev. 5 21-00-00 Page 211
20 Sep 2007
7. Inspect the Heat Exchanger
WARNING: NO CRACKS ARE PERMITTED IN THE EXHAUST MUFFLER. CRACKS
ALLOW CARBON MONOXIDE TO ENTER THE HEATING SYSTEM.
CARBON MONOXIDE IS POISONOUS.
A. Equipment
Item Quantity Part Number
Magnifying glass. 1 Commercial
B. Inspection Procedure
Detail Steps/Work Items Key Items/References
WARNING: IF THE ENGINE HAS BEEN RUNNING, TAKE CARE WHEN YOU
TOUCH THE HEAT EXCHANGER. THE HEAT EXCHANGER GETS
HOT.
(1) Remove the heat-exchanger shroud. Refer to Paragraph 6.
(2) Examine the inside of the shroud. Look specially
for soot marks and cracks.
If you find soot marks, the exhaust
muffler is cracked. You must remove
the muffler for repair, or replace it.
(3) Examine the outer face of the exhaust muffler.
Look specially for soot marks and cracks.
Use a magnifying glass and a strong
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