Lanair MXB360 - Manual (Page 39)

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Section 18 - Service / Maintenance
Air Pre-Heater Diaphragm
Replacement
1. Remove the four hex cap screws from
the diaphragm assembly and discard.
2. Disassemble and discard diaphragm,
spring and o-ring .
3. Thoroughly clean remaining parts.
4. Re-assemble using new diaphragm,
o-ring, spring and hex cap screws.
Air Pre-Heater Nozzle Cleaning /
Replacement
1. Periodic cleaning of the nozzle assem-
bly may be required.
2. Carefully remove nozzle from the air
pre-heater block.
3. Disassemble the nozzle as shown and
clean thoroughly. Re-assemble nozzle.
4. Carefully remove the quad ring from
the block and inspect. Replace if neces-
sary.
5. Insert clean/new quad ring into the air
pre-heater block. NOTE: The quad ring
must be properly seated. Failure to
properly seat the quad ring may result
in leakage and improper burner opera-
tion. DO NOT INSTALL QUAD RING ON
THE NOZZLE.
6. Lubricate pin/seat and re-install nozzle.
Tighten securely.
Air Pre-Heater Diaphragm Assembly
Air Pre-Heater Nozzle Assembly
Proper Quad Ring Position
diaphragm
fuel orifice
body
pin/seat
nozzle assembly
quad ring
piston
spring
hex cap
screws
o-ring
!
Failure to properly seat the
quad ring may result in leak-
age and improper burner
operation. DO NOT INSTALL
QUAD RING ON THE NOZZLE.