Maintenance; Installation Instructions - Dometic Duotherm Royale Penguin 600 Series Important Instructions Manual

3. MAINTENANCE

A. AIR FILTERS: Periodically remove and clean the fil-
ter/grille assemblies located in the air box. Remove the
assemblies by placing fingers on the long portion of
latches and with an over-and-downward pressure,
unlatch the catches. After assemblies are removed,
wash the filter/grille assemblies with soap and warm
water. Let assemblies dry and then reinstall.
NOTE: Never run the air conditioner without return air
filters in place. This may plug the unit evaporator coil
with dirt and may substantially affect the performance
of the unit.
B. AIR BOX HOUSING: Clean air box housing and
control panel with a soft cloth dampened with a mild
detergent. Never use furniture polish or abrasive clean-
ing materials.
C. FAN MOTOR: Factory lubricated and requires no
service under normal use.
1. CHOOSING PROPER LOCATION
FOR THE AIR CONDITIONER
This air conditioner is specifically designed for installation
on the roof of a recreational vehicle (RV).
A. Normal Location
The air conditioner is designed to fit over an existing
roof vent opening. When the vent is removed, it nor-
mally creates a 14-1/4" X 14-1/4" opening.
B. Other Locations
When no roof vent is available or another location is
desired, the following is recommended:
For one unit installation: The air conditioner should
be mounted slightly forward of center (front to back)
and centered from side to side.

INSTALLATION INSTRUCTIONS

D. FROST FORMATION ON COOLING COIL: Under
certain conditions, frost may form on the evaporator
coil. If this should occur, inspect the filter and clean if
dirty. Make sure air louvers are not obstructed. Air
conditioners have a greater tendency to frost when the
outside temperature is relatively low. This may be
prevented by adjusting the thermostat slide to a warmer
setting. Should frost continue, operate on LOW, MED
or HIGH FAN setting until the cooling coil is free of frost.
4. SERVICE–Unit Does Not Operate
If your unit fails to operate or operates improperly, check
the following before calling your service center:
A. If RV is connected to motor generator, check to be sure
motor generator is running and producing power.
B. If RV is connected to power supply by a land line, check
to be sure line is sized properly to run air conditioner
load and it is plugged into power supply.
C. Check your fuse or circuit breaker to see if it is open.
D. After the above checks, call your local service center
for further help. This unit must be serviced by qualified
service personnel only.
When calling for service always give the following:
1) Air Conditioner Model and Serial number found on
rating plate located on base pan of air conditioner
bottom. Remove return air grille to observe this
rating plate.
2) Air Distribution Box Kit Part and Serial Number
found on rating plate located on ceiling template.
Observe this rating plate through the discharge
louver of the air distribution.
FIG. 1
28-3/4"
3
39"
20"
2-1/2"
9-1/2"
22"