Pfannenberg PWS 6502 Serie Manuel D'utilisation page 64

GB
6 Troubleshooting
Fault
Unit does not cool,
Fan is running
Unit does not cool
sufficiently
Condensate
accumulates in the
switch cabinet
Condensate does not
drain
Operating manual PWS and PWI 6502 785408476 © Pfannenberg GmbH
Possible causes
• Temperature setting too high.
• Operating limits exceeded.
• Heat exchanger dirty.
•
Fan defective.
• Disturbance in the air circulation
inside the cabinet.
• Exhaust temperature is too high.
• Switch cabinet is not sufficiently
sealed.
• Condensate drain is plugged up.
• Switch cabinet is not sufficiently
sealed.
Corrective measures
▪ Check the temperature setting.
▪ Check the ambient temperature and internal
load.
▪ Call in authorized, qualified personnel to
check the unit for leakage.
▪ Clean the heat exchanger.
▪ Call in authorized, qualified personnel;
replace fan.
▪ Check the installation and the path of air
circulating in the switchgear cabinet.
▪ Check the supply and outlet flow of air from
the air/ water heat exchanger into the inlet
and outlet openings of the switch cabinet.
▪ Close the cabinet door.
▪ Correct leaky points or seals on the switch
cabinet.
▪ Check the temperature setting.
▪ Clean the condensate drain.
▪ Check whether the condensate drain hose
is free from kinks and is installed with a
downward slope.
▪ Correct leaky points or seals on the switch
cabinet.
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