BWT PERMAQ Compact CRU, Installation And Operating Manual

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9
8. TROUBLE SHOOTING
This chapter deals with problems that may occur on the plant. Follow the instructions in the
relevant flow diagrams in order to perform a troubleshooting.
Warning! ALWAYS pull the
POWER PLUG before replacement of electrical components and wait 3 minutes.
Descrip-
tion of
fault
Reason for fault Action
Fault 1:
The tank
is empty

Low water level.

Check that the RO-plant is running and there
is flow of concentrate to the BWT PERMAQ
Compact CRU. The RO-plant may produce
less concentrate than there is need of for con-
sumption.

Check if too many consumers are connected
on the BWT PERMAQ Compact CRU and
switch some off. Let the BWT PERMAQ Com-
pact CRU become completely filled up.

Check if the level switch float is stuck in top of
the reservoir. Carefully push the level switch
float up/down so that it is at concentrate wa-
ter level.

Check if the level switch and/or the level
switch cable are defective. If so, replace.

Check the TP-pump (See Fault 1 , Fault 2
and Fault 3 ).
Fault 2:
TP pump
doesn’t run

Switch is at OFF.

Push switch to ON.

Low water level.

Let the reservoir become completely filled up
and the TP pump will start automatically.

Defective pressure switch.

Short the pressure switch by making a jumper
between the two plugs. If the pump only runs
when this jumper is connected and there is a
request for water, then the pressure switch is
defective and must be replaced.

Defective capacitor.

Locate transport pumps capacitor in the con-
trol box and replace it.

Defective fuse.

Check the PCB and replace the fuse
(F3-Circuit Board) of the TP pump.

Defective TP-pump.

Replace TP-pump.