Maico GRD 22, Mounting And Operating Instructions, Page: 25 / 28

21
Alarm message Countermeasure
CP ALARM
Pressure is
too low.
Maximum volumetric flow
reached. The measured
pressure is still lower than
the required pressure.
 Modify the volumetric flow.

Check the ventilation
system.

Modify the layout of the
ventilation system.
 Check whether the
pressure lines [6] and [14]
are dirty.
 Clean any line that is dirty
and replace them with
standard hoses of the
same quality and with the
same internal diameter if
necessary.

Make sure the pressure
line is correctly fitted at
the connection piece.
DATA
ERROR
Alarm display
[15] = On.
Relay R1 in
alarm state
(Relay
LED = On)
Data error.

Press RESET button,
resets system to factory
setting. Contact the
Service Hotline if the
fault continues.
 Modify the volumetric flow.

Check the ventilation
system.
 Modify the layout of the
ventilation system.
Tab. 5: Fault rectification
14. In the case of a repair
DANGER
Danger to life.
Unit is powered up.
 Disconnect the GRD unit
completely from the mains
power supply. To do this,
remove the unit roof [1].
Switch the GRD unit off by
setting the service switch to
position "0" and secure it
against being switched back
on with a padlock.
DANGER
Danger of injury from rotating
impeller after switching off!
 Wait until the impeller is
statio-nary before opening
the housing.
CAUTION
Risk of cuts from metal housing
plates with sharp edges.
 Wear protective gloves.
15. Dismantling
DANGER
Danger to life.
Unit is powered up.
 Switch mains fuse and service
switch off.
Dismantling should only be carried out
by a trained electrician.
16. Disposal
Not in domestic waste.
The unit contains in part material that
can be recycled and in part substan-
ces that should not end up as
domestic waste.
 Dispose of the unit once it has reached the
end of its working life according to the
regulations valid where you are.
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