Compass
STD 22
Installation and Service manual
Compass STD 22
Compass STD 22 Compact
191
Edition: May 20, 2005
3646/110--233.DOC010302
The following warnings may appear:
C1= Fan failure
C2= Heater failure
C3= Supporting liquid > 60
°
C
C4= Supporting liquid level too low
C5= Voltage cut-off
7.2.1
Warning 1 “Fan failure”
This warning is generated if the fan does not switch itself on as a result of the
temperature of the supporting liquid (it should switch on when the supporting liquid
reaches 51
°
C).
Whether the fan is operational or not is registered from the fan’s current consumption; it
therefore follows that the fan is defective if this warning is displayed.
To prevent overheating due to fan failure, it is recommended that you do the following:
-- Check whether the fan screen is covered and check to see that air can enter
the enclosure unhindered at the base.
-- Open the door on the compass
-- If necessary cool the outer sphere using an external fan.
These measures should be continued until warning 1 stops.
It is essential that the fan be replaced at the earliest opportunity.
NOTE: A critical situation occurs, if the ambient temperature is extremely high
and warning 3 is displayed “Temperature of supporting liquid more than 60
°
C”.
Constant high temperature may effects to the life cycle of the gyro compass.
A higher temperature for a short moment has no importance.
