Lanair MX200 - Manual (Page 39)

Section 13 - Service / Maintenance
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35
Maintenance - Air Pre-Heater (cont.)
6. Clean all parts using a parts washer
s All passages must be thoroughly cleaned with a brush.
7. Replace Nozzle Assembly and Quad Ring
s After cleaning air pre-heater assembly, blow dry.
s Install new quad ring (4). Before inserting quad ring in air pre-heater block, a light coat
of oil should be applied. NOTE: Make sure quad ring is properly seated in block before
proceeding (see page 40 for clarification).
s Apply a light coat of oil to the shaft of the new nozzle assembly (3). Carefully insert new
nozzle assembly (3) through the quad ring and into the block. Hand tighten gently.
s Check alignment of ignitors and adjust if necessary (see page 39).
8. Re-install O-rings and Plunger
s Insert 1/4" o-ring (10) and 11/16" o-ring (11) into the air pre-heater block (5).
s Insert plunger into air pre-heater block spring end first.
9. Re-install Cartridge Heater
s Apply pipe dope to cartridge heater threads. Insert cartridge heater into air pre-heater
block and tighten.
10. Re-install Adapter Assembly
s Align the holes of the adapter assembly (16) with those on the air pre-heater block (5).
NOTE: Make sure the small end of the adapter pin is facing toward the air pre-heater
block.
s Attach the Adapter assembly (16) to the block using two hex cap screws (17). Tighten
screws.
11. Re-install Diaphragm
s Re-attach diaphragm assembly and hand tighten. NOTE: Do not over tighten.
12. Replace Ignitor Assembly (see page 39)
13. Service Oil Pre-Heater (see pages 33-37 for Annual Maintenance Instructions)
THE ENTIRE PRE-HEATER ASSEMBLY IS AVAILABLE
PART# 9812