Airstream Excella 1975 Owner's Manual page 55

Below Bed Storage
are hooked-up to 120 volt city power.) When
it shows low condition, you should take every
reasonable step to conserve power by using as
few lights as possible and switching as soon as
practical with the tow vehicle charging
system, trailer battery charger (12 volt gener¬
ator) or connection to 120 volt power.
The ammeter indicates whether the trailer
battery is being charged. If discharge is
indicated, reduce your power usage. The
Univolt System charges the battery only to
the extent of any surplus over and above the
electrical demands you make. The battery will
not be able to recharge until the power usage
is reduced. Therefore, before leaving on a trip,
conserve power usage the night before to
insure a fully charged battery.
The water pump switch, when on, also lights
the indicator light. On trailers without a
it_uicm
Central Control Panel
Central Control Panel, this switch is located in
the galley area. For a complete discussion of
the pump, please refer to page 61.
The water tank, main holding tank and
auxiliary holding tank gauges indicate the
amount of liquid in their respective tanks.
Press the appropriate switch and the gauge
will indicate in one of the five positions (see
diagram).
The needle position may be slightly off the
indicated mark due to varying voltage in the
Univolt System. With a partially discharged
trailer battery, the needle would be to the left
of dot. A higher voltage would move the
needle to the right of the dot. Under these
conditions the correct tank level is indicated
by the closest dot.
Before leaving the factory the tank level
L- Full
Between % and Full
Between Vz and -%
Between 14 and Vi
Between Empty and 'A
Water Tank and Holding Tank Gauges
gauges are calibrated. Periodic recalibration
may be necessary due to mineral deposits on
tank probes. In rare cases, when the water
tank has been filled with very pure water, as
from a mountain stream, the gauge needle will
not align with an indicator dot. This can be
corrected by recalibration. To recalibrate any
of the three tank gauges: fill the tank to its
maximum capacity with water. Press switch
and align gauge needle to the middle of the F
dot by turning adjustment screw. This screw,
located in a hole directly below meter, may
be turned with a narrow blade screwdriver.
Accumulation of oxides, dirt, etc. may pre¬
vent alignment of needle with dot. In this case
remove probes and scrape clean. Apply
sealant to thread area only and replace
probes. Care must be taken to keep probes
free of sealant.
The power-on light will glow automatically
47