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42 Original Instructions
3.4.3 The control panel
The control panel (5) is based upon a schematic drawing of the system where a number of
control lamps will show the status of the system and possible faults.
The control lamps have been divided into three categories:
Green indicating a coupled unit (valve, C3K)
Yellow indicating an activated sensor (pressure switch, flow, level)
Red indicating a serious fault (leakage, over heating, etc.)
In normal conditions only the green and the yellow control lamps will glow.
If a serious fault arises the relevant red control lamp will start flashing and at the same time the
system will stop operating completely. Status from the other lamps is retained so the condition
at the moment of the fault is visible.
If a red control lamp flashes the system can usually not be re-started until the fault has been
corrected unless a motor pump unit is disengaged because of a too high temperature or a too
high power consumption. The plant can be restarted by following the procedure described in
section 3.4.2 as the steering will disconnect the defective motor. Thus the actual control lamp
will glow contantly (cf. the section on “3.10 Trouble-shooting and correction”).
The meaning of the control panel and the individual control lamps appears from Fig. 2 below.
Fig. 2
RED: Flashes at illegal sensor combination [water inlet will stop]
RED: Flashes at a water temperature in tank above 80°C [system will stop]
RED: Flashes at lack of water
YELLOW: Glows when high water level has been achieved
[water inlet will stop]
YELLOW: Glows when low water level has been achieved
[water inlet will start]
RED: *
)
Flashes if the temp. in motor no. 1 is excessive or the oil level low [system will stop]
*
)
Glows constantly when starting the plant with a defective motor pump unit
RED: *
)
Flashes if the current cons. on pump no. 1 is excessive [system will stop]
GREEN: Glows when pump no. 1 is in operation
GREEN: Cold inlet
GREEN: Hot inlet
YELLOW: Glows when water is recirculated
GREEN: Glows when relief valve is closed [normal operat.]
YELLOW: Glows at normal working pressure [high pressure]
YELLOW: Glows when line pressure exceeds 25 bar.
YELLOW: Temperature adjustment
connected
Glows if the regulation is
temporarily disconnected
because of an insufficient
water supply.
RED: Flashes in case of leakage on internal high pressure hose [system will stop]
RED: Flashes in case of leakage on external pipe line [system will stop]
42


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