Dometic RM7732 - Manual (Page 21)

18
DOMETIC® RM7030/RM7732
Refrigerators
DIAGNOSTIC SERVICE MANUAL
5.11 ELECTRODE
First, do a visual check for
cracks or breaks on the
ceramic insulator.
Verify the
mounting
bracket is
attached
properly to
the elec-
trode. If
either of the above is found, replace the electrode. The
spark gap must be set at three sixteenths (3/16") of an
inch and tip of electrode above the slots in the burner.
If igniter (see Sec. 5.5A or B) and high voltage cable
(see Sec. 5.6A or B) are good and there is no spark at
the tip of the electrode, replace the electrode.
5.12 CLIMATE CONTROL HEATER
The climate control is a switch operated DC electric
heater. Its primary function is to warm the frame of the
refrigerator during high temperature/high humidity
conditions. This prevents the formation of condensation
on the metal frame.
To check the switch, disconnect the wires and do a
continuity check. In the OFF position, there should be
no continuity. In the ON position, there should be a
continuity reading.
ELECTRODE
TIP
3/16"
BURNER
To check the heater itself, do an ohms resistance
reading on the heater wire by using a properly cali-
brated ohm meter. The proper ohms reading is 34 ohms
± 10%. The approximate amp draw is less than .5 (1/2)
amp.
NOTE: The climate control will draw DC power continu-
ously. It should be turned off when charging source is
not available.
SECTION 6
LP GAS REQUIREMENTS
The LP gas pressure to the refrigerator should be 11
inches water column with half of all BTU's of the RV
turned on. With all other appliances off, the pressure to
the refrigerator should not exceed 12 inches water
column. To check the gas pressure when the refrigera-
tor is operating, there is a pressure test port on the
solenoid.
SOLENOID VALVE
TEST PORT
TEST PORT
RM7030 (Product No. 921890201 & 921890301)
RM7030 (Product No. 921890401) and RM7732