Safety measures
21.11.2015
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Z20469
Copyright
2013 by: WATERKOTTE GmbH. Subject to changes.
16
Safety measures
16.1
Pressure limits of compressor
The cooling circuit is protected against unacceptable excessive pressure by a
type-tested pressostat. The switch interrupts the control voltage of the compres-
sor contactor. Restart is locked by the central control unit and must be manually
reset. Manipulation of safety switches is prohibited and is a violation of UVV
VBG20 (accident prevention regulations for cooling devices). In any case, it will re-
sult in exclusion of warranty.
The high pressure pressostat is placed in the pipe of the refrigerant medium at the
exit of the condenser.
Shift points (R410A):
45.0 bar OFF --- 35.0 bar ON
16.2
Motor protection against excessive temperature
Fully hermetic compressors are equipped with a bimetal switch that disconnects
the power supply and connects again after cool down to protect against exces-
sive motor temperatures; an error message is not generated.
16.3
Refrigerator oil
Use only the specified oil type (e
ster oil ICI Emkarate RL 32-3MAF)
; non-
compliance will result in exclusion of warranty and certainly cause malfunctions.
Improper manipulation to the refrigeration cycle leads to total loss and the loss of
warranty. Any work on the hydraulic circuit of the heat pump shall only be per-
formed by skilled workers.
