Periodic Maintenance - Dometic NEA1402 User Manual

maintenance & service
CAUTION
If your refrigerator stops cooling, immediately turn
the refrigerator off and see a Dometic dealer.
The following instructions are applicable for
NDA1402. The procedures described in
mAINTENANCE
personnel only.

periodic maintenance

checking the connections
1. Check all connections in the lP gas system (at the
back of the refrigerator) for gas leaks. The lP gas
supply must be turned on.
2. Apply a non-corrosive bubble solution to all lP gas
connections. The appearance of bubbles indicates a
leak and should be repaired immediately by a quali-
fied serviceman.
6
wARNINg
!
EXPLOSION HAZARD. Never use an open flame
to check for gas leaks. Failure to heed this warn-
ing could cause an explosion resulting in death or
severe personal injury.
checking the lp gas pressure
The lP gas pressure should be checked and the main regulator
readjusted if pressure is incorrect. The correct operating pres-
sure is 11 inches of water column. measure the lP gas pressure
at the test port, just ahead of the burner jet.
Gas equipment assembly
BURNER MOUNTING
SCREWS
BURNER JET
BURNER TUBE .
SPARK ELECTRODE
cleaning the flue and burner
Inspect the flue baffle. It should be reasonably clean and free
of soot. heavy soot formation indicates improper functioning
of the burner.
To clean the flue and burner, follow these steps:
1. Unplug the refrigerator power cord from the 120V
AC outlet.
PERIoDIC
are to be performed by service
SOLENOID VALVE
INLET FITTING
MANUAL SHUT OFF VALVE
Shown in open position
PRESSURE TEST PORT
2. Disconnect/shut off the 12V DC power to the refrig-
erator.
3. Turn the manual shutoff valve to oFF.
4. In turn, remove the:
- Cover from the burner housing.
- Burner mounting screw and burner assembly.
- Wire and flue baffle from the top of flue tube.
5. Using a flue brush, clean the flue from the top.
Blowing compressed air into the flue will not prop-
erly clean soot and scale out of the flue tube.
6. Replace the flue baffle.
7. Clean the burner tube with a brush. Blow out the
burner with compressed air.
8. Before removing the burner jet,
soot and scale that fell out of flue tube.
9. Remove the burner jet.
10. S oak the jet in wood alcohol and blow it out with
compressed air.
6
FIRE HAZARD. Do not use a wire or pin
when cleaning the burner jet as damage can
occur to the precision opening. Failure to
heed this warning could cause fire resulting
in personal injury.
11. Reinstall and tighten the burner jet.
12. Carefully reinstall the burner. Make sure the end of
the burner fits into the slot on the burner bracket and
that the slots are centered under the flue tube.
13. Check the electrode for proper location and gap.
1/8" to 3/16"
(3-5 mm)
14. Turn on the manual gas shutoff valve. Check all
fittings for leaks with soapy water.
15. Connect the 120V power cord to the outlet.
Reconnect/turn on the 12V DC power.
16. Check the LP gas safety shutoff.
- 12 -
clean burner area of
wARNINg
!
The flame should be
clear blue over the
slots of the burner
Electrode
Burner tube