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5
Service and maintenance
5.1.
General cleaning
DANGER
Danger of fatal injury due to electric shock
Voltage-carrying units and exposed connection cables may cause electric shocks and serious accidents.
➢ Only trained electricians may work on electrical connections.
➢ Disconnect all supply lines from the separate fuse or main switch prior to working on the unit and
secure against being switched on again.
➢ Ensure that the unit is free of voltage.
WARNING
Risk of accidents due to component damage during cleaning
Cleaning the air/water heat exchangers using water jets, steam jet cleaners or high-pressure cleaners or sharp
objects may damage the electrical and electronic components. Malfunctions may cause accidents.
➢ Do not clean with a water jet, high-pressure cleaner or flammable cleaning agents.
➢ Protect electrical components against moisture penetration.
➢ Do not use pointed or sharp-edged objects when cleaning the blades. They must not be compressed or
damaged.
CAUTION
Risk of crushing when removing the unit cover
Hands and other body parts may be crushed when removing and reinserting the unit cover.
➢ Do not place any body parts between the frame and the unit cut-out.
➢ Work carefully and wear gloves.
The frequency of cleaning intervals depends on the respective operating conditions. Perform the following cleaning
operations regularly to ensure safe and reliable operation of the air/water heat exchangers:
▪
Clean the heat exchangers of dust or ambient residues.
▪
Regularly check the condensate drain.
Operating Manual PWT 6402 230V / 400V 086100107b © Pfannenberg GmbH
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