Proline Kryomats
98 Maintenance YAUE0007 / 2/26/2009
UL 533
9.3.2 Service intervals according to VDI 3033
System part Frequency Comment
Each time of putting into operation and
then
Complete device
External condition of the device Monthly
Heat transfer liquid
Analysis of the heat transfer liquid Half-yearly (and as required) (Ö 9.3.3)
Heat transfer system
Sealing Daily External visual inspection
External hoses
Material fatigue Monthly External visual inspection
Cooling unit
Condenser cleaning Monthly (Ö 9.3.4)
Electronics
Over temperature protection Quarterly (Ö 7.12.1)
Low level alarm/ warning Quarterly (Ö 7.12.2)
9.3.3 Testing the heat transfer liquid
If required, the heat transfer liquid should be checked for fitness for use (e.g. when changing the
method of operation), or at least half-yearly. Further use of the heat transfer liquid is only permissible
if the inspection indicates this.
The test of the heat transfer liquid should takes place according to DIN 51529; Testing of mineral oils and
related products - Testing and evaluation of used heat transfer fluids.
Source: VDI 3033; DIN 51529.
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