11.
Maintenance:
‘ C A U T I O N ’
‘Risk of electric shock More than one power supply.
Diinect all power supplies before servicing’.
LP.
gas equipment:
The burner (fig. 3) is fitted with a jet No..21 which is suitable for use with Propane gas at a
supply pressure of 11 inches, water gauge. The orifice in the jet is very small and must never
be cleaned by means of a pin or a similar instrument, as this could damage the orifice. Should
the jet require deaning for some reason, it should be washed in alcohol and blown through
with air.
11.1 Cleaning gas burner and jet:
Once or twice a year, or depending on use, check whether the f&me is blue-coloured. For this
inspect the flame through burner flame opening (fig. 2.9) a yellow flame is sign of a bad
combustion. The procedure for cleaning the flue and the burner assembly, is as follows:
a:
b:
unscrew rear cover of refrigerator box.
disconnect and remove gas pipe from the burner. For this operation you need a 13/32" (10
mm) spanner for the union nut (fig. 3.1).
c:
d:
e:
f:
g:
unscrew the counter nut (fig. 3.2) of the jet (fig. 3.3) with a 1/2" (12 mm) spanner and
remove guard (fig. 3.4).
unscrew security-and guard plate (fig. 3.5,3.7) of the burner pipe (fig. 3.6) which are
fastened by a screw, push the burner pipe from the jet and remove the jet from the boring.
wash the jet with alcohol and blow through with air to check that the opening is quite
dean. Do not use a probe.
clean the burner pipe ensuring its combustion- and aeration openings are free from dust.
refit all parts, ensuring the burner is property retained. Gas connections should be tight,
but not overnight After replacing, check all gas joints for tightness as descrii in the next
item.
All instructions under item 11.1 must only be made by an expert, preferably by a
licenced gas fitter.
11.2
Checking for gas leaks:
Periodically, and after each service the entire gas installation should be checked for leaks. Test
all pipe connections with soapy water (not with a flame), watching for bubbles - see item 2
Liquid Gas Operation.
11.3 Heaters:
Heat is supplied
to the
boiler of the cooling unit by two separate 75
W heaters, one
for 12 V
d.c. and one for 120
V a.c.. If a new heater has to be fitted, the procedure is
as follows:
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