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SET Energietechnik Ltd. * August-Blessing-Str. 5 * D-71282 Hemmingen * Tel.: +49 (0)7150 9454-0 Fax: +49 (0)7150 2337
7.
Maintenance
Professional maintenance and care are a prerequisite for trouble-free operation and a long
service life for the device. They should therefore be carried out at regular intervals (once a
year) and include at least the following work.
7.2
Complete cleaning
A complete cleaning of the entire device, which should also include the fan impeller,
evaporator, defrost water pan and condensate discharge.
7.3
Condensate discharge
The condensate discharge must be cleaned of residues on a regular basis.
Depending on requirements, we recommend a ¼ - ½-annual flushing of the condensate
discharge, e.g. by filling the condensate pan with a watering can. This also prevents the
accumulation of particles in the subsequent pipes. If the pan then empties quickly, this is an
indication that the pipe is free.
7.4
Fan
The bearing of the fan shaft has been equipped with permanent lubrication. The fan impeller
and, if necessary, the air diffuser plate should be cleaned of adhesions.
7.5
Corrosion protection
If necessary, the inside of the heat pump should be treated with a corrosion protection spray.
Damage to painted surfaces should be repaired during maintenance.
7.6
Refrigeration cycle
The adjustment of the refrigeration cycle is carried out in the factory. For maintenance and
any repairs which must only be carried out by authorised professionals, the following
reference values apply for determining the correct filling capacity:
- Supercooling (before injection)
approx. 2 - 3
K condensation 38-40°C
- Superheating (after evaporator)
approx. 7-10
K evaporation 7-10°C
(controlled by manometer and thermometer)
Caution:
The rubber feet on the bottom of the compressor must be checked
during each maintenance and changed if necessary.