Testing The Heat Transfer Liquid; Maintenance Of The Refrigeration Unit - Lauda Alpha A Operating Instructions Manual

8.2.2

Testing the heat transfer liquid

If the heat transfer liquid becomes contaminated, it has to be replaced ( 6.2 and 6.3).
If required, the heat carrier should be checked for capability for use (for example when changing the
method of operation), or at least half-yearly. Further use of the heat carrier is only permissible if the in-
spection indicates this.
The test of the heat transfer liquid should takes place according to DIN 51529; Testing and assessment of used
heat transfer media.
Source: VDI 3033; DIN 51529.
8.2.3

Maintenance of the refrigeration unit

36
Condenser cleaning
The refrigeration unit operates largely without
maintenance.
Depending on the ambient dust conditions and the
operating time, any dust on the heat exchanger
(condenser) must be removed at intervals of
2 weeks or longer.
This is done after taking off the front grille. Brush
off the condenser and if necessary blow through
with compressed air.
Maintenance
Alpha
June 20, 2018/ YACE0092