omi CHA 1.3, Руководство пользователя и по обслуживанию

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710.1759.01.01-00D 19/09/2018
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You will find further information on safety precautions in the general warnings at the start of these
instructions.
Please note the following warnings in particular:
Do not remove (even only partially) the protective panels of the water cooler unless it is
necessary.
If the protective panels still have to be removed, disconnect the water cooler from its energy sources
(electricity and water), and affix a sign stating “Maintenance work on water cooler in progress” on the
operating panel.
Replace the protective panels afterwards as quickly as possible.
Wait at least 15 minutes before removing the protective panels so that the water cooler can cool
down. Certain internal components have a very high and dangerous operating temperature!
9.1 POSSIBLE ALARM SIGNALS AND THEIR RECTIFICATION
9.1.1 CONTROLLER TYPE “A”, “D”, (CHA 1.3 TO CHA 129)
No. Device
status
Alarm
code
Alarm
description
Possible cause Recommended actions Restore
(*)
1
Pump is
working,
solenoid
valve is
not
working
OFF
Unit is in Off
by remote
ON/OFF Remote ON/OFF contact
is open or internal bridge
removed
Check bridge ROO and close the
contact
A
OFF
Unit in stand
by The unit is energized but
not switched on Follow procedure to start up the
unit using button on controller
LA2
Antifreeze
alarm
(OPTIONAL)
Set point is too low for
actual system
If possible increase set point, or
check combination of flow,
temperature and antifreeze
percentage
Liquid flow too low
Check right rotation of pump and
possible obstruction on liquid circuit
P1
Sensor P1
defective Probe can be defective or
not well connected Check connection and in case
change probe
2
Pump is
not
working,
solenoid
valve is
working
Pump is
blocked
The gear of the pump is
blocked by dusty or
corrosion
Try to move the axe of the pump
and after that switch on again
A
The motor of the pump is
internally protected
Switch off the unit for one hour and
try again after check the axe is not
blocked and there are no liquid
obstruction
Fuses can be defective Check the fuses
3
Pump and
solenoid
valve are
not
working
CA
Unit is in Off
by remote
ON/OFF
Remote ON/OFF contact
is closed Check bridge ROO and open the
contact
A
digital input
alarm
Liquid flow too low
Check right rotation of the pump
and possible obstruction on liquid
circuit
Liquid in the tank too low Fill the tank
4
Pump and
solenoid
valve are
working
HA
High liquid
temperature
alarm
Dirty heat exchanger
Clean the heat exchanger as
described in maintenance
A
Solenoid valve is not
working fine
Check the solenoid valve
Required cooling capacity
is higher than nominal Decrease the required cooling
capacity
Water inlet temperature
too high
Check water inlet temperature
LA
Low liquid
temperature
Ambient temperature too
low is decreasing liquid
temperature
The unit have to work in ambient
condition as specified in this manual
P2
Sensor P2
defective Probe can be defective or
not well connected Check connection and in case
change probe
(*)
A
Automatic restore at standard recovery condition –
M
Restore the alarm on the controller using the following
procedure