Pfannenberg DTS 3000 Series - Manual (Page 12)

DTS Series Cooling Units
9
SECTION 7: MAINTENANCE
7.1 General Maintenance
WARNING!
Disconnect the cooling unit from the power
supply before any cleaning or maintenance.
The cooling unit is largely maintenance free.
The cooling circuit is a maintenance free hermetically
sealed system. It has been filled at the factory with
the required refrigerant amount, checked for leakage
and run through a series of functional tests before
being shipped.
The components around the external air circuit require
periodic cleaning and maintenance depending on
the environmental conditions.
7.2 Cleaning
The cleaning intervals depend upon the relevant
operating conditions. In particular, observe the
following instructions:
• Disconnect the cooling unit from the power supply
• Remove the external cover
• Clean the heat exchanger regularly using a soft
brush or pressurized air
• It is recommended that the condensate run off
opening be checked regularly
WARNING!
Damage to the heat exchanger possible.
Do not use any sharp or pointed object to
clean the condenser heat exchanger.
The heat exchanger fins should not be bent,
compressed or damaged in any way during
the cleaning process.
If the cooling units are provided with a filter, clean
the filter mat regularly. The cleaning intervals or the
intervals for replacement of the filter mat mainly
depends upon environmental conditions (air quality.)
You can rinse the filter mat using water heated to
40° C and commercially available mild detergent.
It is possible to remove any dirt by knocking the mat
slightly, vacuum cleaning it or blowing it out.
If the filter mat is oily or greasy, please replace.