Lauda RP 4050 C, Operation Manual

Page: 114 / 136

114 / 137 Proline Kryomats 03/2022
9.3.2 Service intervals
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) (

9.3.3)
Heat transfer system
Sealing Daily External visual inspection
External hoses
Material fatigue Monthly External visual inspection
Cooling unit
Condenser cleaning Monthly (

9.3.4)
Electronics
Over temperature protection Quarterly (

7.12.1)
Low level alarm/ warning Quarterly (

7.12.2)
9.3.3 Testing the heat transfer liquid
Caution!
Contact with hot / cold heat transfer liquid
Scalds, frostbite

Bring the heat transfer liquid to room temperature for
analysis.
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.