Huber MPC Minichiller 280, Manual

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Introduction
Chapter 1 OPERATION MANUAL
V2.4.0en/09.08.21//1.30
Minichiller®
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1.5.2.1 Mechanical overtemperature protection
Only temperature control units with a heater are fitted with a mechanical overtemperature protec-
tion. → Page 37, section »Setting the overtemperature (OT) protection« .
1.5.2.2 Low level protection
Minichiller with heater:
A mechanical float is used for level monitoring. A floating body, which is
guided in a device, floats on the surface of the thermal fluid. Depending on the level of the thermal
fluid, the float device signals the electronics a state of good (in case of sufficient filling) or a state of
bad (in case of insufficient filling). The functionality of the float is checked at regular intervals during
continuous operation.
1.5.3 Further protective devices
Emergency strategy – interrupt the power grid connection!
To determine the type of switch or switch combination your temperature control unit is equipped
with, please refer to the wiring diagram. → From page 59, section »Annex« .
Temperature control units with >Mains isolator< [36] (red/yellow or gray): Turn the >Mains
isolator< [36] to the “0” position.
Temperature control units with >Mains isolator< [36] (red/yellow) and additional >Appliance
switch< [37] (gray): Turn the >Mains isolator< [36] to the “0” position. Then turn the >Appliance
switch< [37] to the “0” position!
Temperature control units with >Mains isolator< [36] (gray) and >Emergency stop switch< [70]
(red/yellow): Press the >Emergency stop switch< [70]. Then turn the >Main switch< [36] to the
“0” position!
Temperature control units with >Mains switch< [37] : Power supply via socket: Disconnect the
temperature control unit from the power supply. Then turn the >Mains isolator< [37] to the “0”
position! Power supply via hard wiring: Disconnect the power grid supply by means of the build-
ing’s circuit breaker. Then turn the >Mains isolator< [37] to the “0” position!
Temperature control units without a switch or inside a protective housing: Connection via sock-
et: Disconnect the temperature control unit from the power supply. Connection via hard wiring:
Disconnect the power grid supply by means of the building’s circuit breaker!
1.5.3.1 Power interruption
Following a power outage (or when switching on the temperature control unit), this function can be
used to determine how the temperature control unit is supposed to respond.
Auto start function switched off
The temperature control is started only by manual input when the temperature control unit is
turned on.
Overview of the tem-
perature thresholds