• 71 •
Installation manual /
eCOMFORT R32-MIL166E-0222 - 09/2022
3.2.- UNIT OPERATION: ELECTRICAL AND CONTROL FEATURES
See the specific manual for the «CLIMATIC» control.
1.- Fan over current protection:
Circuit breaker designed to stop the fan motors in the event of phase over current in relation to the permitted value.
2.- Compressor motor over current protection:
Circuit breaker designed to protect each motor winding against accidental over current.
3.- Chilled liquid pump interlock:
This interlock is made only if the the pump is supplied with the liquid chiller. As soon as the unit is powered up and the remote on/off
for the unit is validated, the pump starts running. Prior operation of the pumps is mandatory for compressor operation.
Note: on units with CLIMATIC control, control of 1 or 2 water pumps is catered for by the control program.
4.- Flow switch for the chilled liquid:
This control device initiates unconditional unit stoppage as soon as the flow of chilled liquid (water, brine, etc...) ensured by the pump
becomes insufficient, since this could cause rapid evaporator freeze up. When the contact opens due to a lack of flow the unit must
stop immediately.
If the purchaser installs a flow switch himself, electrical connections should be made to the two remote interlock terminals (dry contact).
5.- Antifreeze protection (standard):
This feature is provided as standard by the climatic controller: and can be adjusted for brine or glycol/water chilling for which the
freezing temperature depends on the concentration of the solution.
The antifreeze protection causes an immediate shut down of the unit.
The controller monitors the chilled water outlet temperature. It then triggers the fault if the temperature goes below the set point value
(+3°C for water).
6.- Loss of power supply:
There are no problems restarting the machine after a loss of power supply of short duration (up to about one hour). If loss of power
supply lasts longer than this, when power supply is resumed set the unit to «OFF» with the compressor crankcase heaters activated
for as long as it takes to bring sump oil back up to temperature, then restart the unit.
3.3.- CLIMATIC CONTROL
See the specific manual for the «CLIMATIC» control.
3.- COMMISSIONING AND OPERATION
Summary of Contents for eCOMFORT R32 GAC 035S
Page 2: ......
Page 86: ...84 Installation manual eCOMFORT R32 MIL166E 0222 09 2022 NOTES...
Page 87: ......
