Pfannenberg PAI User Manual
Page 13
13 / 46
685 408 005
commercially available mild detergent. It is possible to remove any
dry dirt by knocking the mat slightly, vacuum cleaning it or blowing
it out.
CAUTION：
：
：
：Damage to the filter mat.
Do not wring the filter mat. Avoid too solid a water jet.
. If the filter mat is oily or greasy, replace.
11.2 Maintenance
The components around the external air circuit require
maintenance and cleaning depending upon the ambient
conditions (see Section 11.1).
After each service, normal running of fans should be checked.
12 Stopping
If the air/air heat exchanger is not in use for a longer period,
disconnect it. Ensure that unauthorised persons cannot start the
air/air heat exchanger. When the air/air heat exchanger is no
longer needed, it must be disposed of by authorized specialist
personnel in accordance with all applicable environmental
protection regulations. (see also Section 4, General Information).
13 What to do if ...
... in spite of your care and attention a fault occurs?
Check the following points first. If the fault is not then cleared,
call an authorized specialist.
13.1 General errors
- No message via the service indicator
Fault
Possible cause(s)
Remedy
Internal fan is not running
Internal fan faulty
Call authorized specialist, replace internal fan
Power abnormal
Check the power
High temperature alarm, external fan
is running
Threshold values for usage exceeded
Check ambient temperature and internal heat load
Incorrect temperature setting
Increase alarm set point or decrease control set
point
Heat exchanger contaminated
Clean heat exchanger
Filter screen contaminated
Clean filter screen
Internal fan faulty
Call authorized specialist, replace fan
High temperature alarm, external fan
is not running
External fan faulty
Call authorized specialist, replace fan
Power faulty
Check power
Incorrect temperature setting
Increase alarm set point or decrease control set
point
Control temperature thermostat faulty
Call authorized specialist, replace thermostat
14 Warranty Condition
Warranty becomes null and void:
In case of improper usage of the unit, noncompliance with operating conditions or non observance of instructions;
If operated in rooms in which corrosives or acids are present in the atmosphere;
In case of damage caused by contaminated or jammed air filters;
If a non-authorised person interrupts the temperature control circulation, modifies the unit or changes the serial number;
In case of damage caused by transport or by accidents;
For the exchange of parts by non-authorized personnel.
In order to maintain your warranty rights please observe the following when returning the unit:
Include a detailed description of the defect and the DRU(RMA) number issued by Pfannenberg with the cooling unit.
Enclose proof of delivery (delivery note or copy of invoice).
Return the unit together with all accessories; use the original packaging or packaging of equivalent quality, send the unit freight prepaid
and covered by adequate transport insurance. Observe the hints on transport mentioned in section 2.