Water Seperator Coalescer Installation 504
21-51-41 Figure 401 May 15/68
Page 402
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
5. Install Water Separator Bag
A. Check that louvers of bag support are clean, then slide new bag over support and install retaining ring.
NOTE: If bag has napped side, install with napped side out.
B. Visually check both O-ring gaskets for damage and indication of permanent set. Replace gaskets as necessary.
C. Check inlet shell assembly and collector chamber for cleanliness. Remove any material that may plug drain.
D. Locate O-ring gasket in shell assembly groove (View 2, Fig. 401).
E. Install bag assembly into shell.
F. Install O-ring gasket in collector chamber groove.
NOTE: It may be necessary to lightly grease O-ring gasket to keep gasket in groove during installation. Wipe off excess grease.
G. Slide shell assembly with bag between air duct and collector chamber.
NOTE: Be careful not to disturb O-ring gasket and keep bag support centered as much as possible in shell.
H. Install clamp holding shell to collector assembly.
I. Install duct clamp at aft end of water separator.
J. Install water separator support bracket clamp.
K. Provide electrical power.
L. Pressurize pneumatic system to approximately 25 psi.
M. Operate air conditioning air cycle system.
N. Hold temperature selector to manual COOL until air mix valve moves to full COLD then move selector to OFF.
O. Check for leakage at water separator duct clamps by listening and feeling. Diffused leakage is allowed at any connection but jet blasts are not.
P. Turn air cycle system off.
Q. Remove pneumatic power if no longer required.
R. Remove electrical power if no longer required.
S. Close air conditioning equipment bay doors.
500
Feb 01/74 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 21-51-41 Page 403
WATER SEPARATOR COALESCER (BAG) - INSPECTION/CHECK
1. General
A. Fog or high humidity in cabin and/or pounding noise heard through air conditioning distribution system is an indication of water separator coalescer bag clogging. As the bag becomes clogged, the pressure applied to the bag condition indicator piston is increased, forcing the disk on the piston shaft toward the red colored window section of the indicator cap. When the disk is positioned within the red colored portion of the cap, it indicates a dirty bag and the bag should be replaced (Fig. 601).
2. Preparation For Check
A. Pressurize pneumatic system with APU, turn one air conditioning pack on (Ref 21-11-0, A/T).
B. Using manual controls on overhead panel (Ref 21-61-0, DO) to operate air conditioning system at full cold.
3. Check Coalescer
A. Examine bag condition indicator (Fig. 601).
B. If disk is within red colored portion replace bag (R/I).
C. Repeat Preparation For Check and Check Coalescer for other pack.
4. Return Airplane to Normal
A. Shut off applicable air conditioning pack.
B. Shut off pneumatic system (Ref 21-11-0, A/T).
5B8
Jun 20/84 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 21-51-41 Page 601
Water Separator Coalescer (Bag) Indicator 5B8
21-51-41 Figure 601 Jun 20/84
Page 602
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
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