Dometic 3241.301 Instrucciones De Instalación Y Funcionamiento página 31

MAINTENANCE
A. Air Filter
1. Periodically (a minimum of every 2 weeks of opera-
tion) slide out the return air fi lters located on the
end of the air distribution box. Wash the fi lters with
soap and warm water, let dry and then reinstall.
Note: To insure easy future removal the fi lters need to be
replaced with the domed side of their handle positioned
toward the ceiling.
Note: Never run the unit without both return air fi lters in
place. This will plug the unit evaporator coil with dirt and may
substantially degrade the performance of the unit over time.
B. Air Distribution Box Housing
1. Clean air distribution box housing and control panel
with a soft cloth dampened with a mild detergent.
Never use furniture polish or scouring powders.
C. Fan Motor
1. The blower motor is factory lubricated and requires
no service.
D. Frost Formation On Cooling Coil
1. Frost on a small portion of the coil is not unusual.
Under certain conditions, ice may form on the
evaporator coil. This is indicated by very cold output
at very low air speed and the icing can be seen
through the air inlet holes with the fi lters removed. If
this should occur, inspect the fi lter and clean if dirty.
Make sure air vents are open and not obstructed.
Units have a greater tendency to frost when the
outside temperature is relatively low. This may be
prevented by adjusting the thermostat control knob
to a warmer setting (counter clockwise). Should
frosting continue, operate on any FAN ONLY setting
until the cooling coil is free of frost; then resume
normal operation. If frost condition persist, contact
your local service center for assistance.
SERVICE-UNIT DOES NOT OPERATE
If your unit fails to operate or operates improperly, check
the following before calling your service center.
A.
If Caravan connected to motor generator, check to
be sure motor generator is running and producing
power.
B.
If Caravan connected to power supply by a land line,
check to be sure line is sized properly to run unit load
and it is plugged into power supply.
C.
Check your fuse or circuit breaker to see if it is open.
Insure fuse is not burnt, or circuit breaker is "ON" and
not activated.
D.
After the above checks, call your local service center
for further help. This unit must be serviced by qualifi ed
service personnel only.
E.
If any wiring or supply cord is damaged and
needs to be replaced, it must be replaced by the
manufacturer or its service agent or a similarly quali-
fi ed person.
F.
When calling for service, always give the following:
1. Unit type and serial number found on identifi cation
label located on base pan of unit bottom. (Remove
fi lter and view through network of holes)
2. Air distribution box model and serial number found
on rating plate located on ceiling template. Observe
this rating plate through the air distribution box right
side vent opening.
G.
Heater Element thermal reset may be performed by
qualifi ed personal with an electrically insulated probe.
See FIG. 18. The unit is disassembled from above to
facilitate this. The unit should be reviewed at the time
of reset to insure air fl ow is not blocked and motor is
functioning properly. Disconnect the 220 - 240 VAC
power supply prior to performing this reset.
Disconnect 220 - 240 VAC. Failure to follow
these instructions could create a shock haz-
ard causing death or severe personal injury.
FIG 18
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