GEA HGX46/250-4 S CO2T Assembly Instructions Manual

Also see for HGX46/280-4 ML CO2T: Assembly instructions Assembly instructions

Contents

28DGBFE96259-03.2016-DGb5| Electrical connectionFig. 27Temperature monitoring connections:Motor winding: Terminals 1 - 2Thermal protection thermostat: Terminals 3 - 4Restart prevention: Terminals 5 - 6ATTENTIONTerminals 1 - 6 on the triggerunit MP10 and terminals PTC 1and PTC 2 on the compressorterminal board must not come intocontact with mains voltage. Thiswould destroy the trigger unit andPTC sensors.The supply voltage at L1-N (+/- forDC 24 V version) must be identicalto the voltage at terminals 11, 12,14 and 43.5.7 Electronic trigger unit MP10The compressor motor is fitted with cold conductor temperature sensors (PTC) connected to the elec-tronic trigger unit MP10 in the terminal box. Readiness to operate is signalled by the H3 LED (green)after the power supply is applied. In the case of excess temperature in the motor winding, the unitswitches off the compressor and the H1 LED lights red.The hot gas side of the compressor can also be protected against overtemperature using a thermalprotection thermostat. The H2 LED (red) is provided for the protection function.The unit trips when an overload or inadmissible operating conditions occur. Find and remedythe cause.5.8 Connection of the trigger unit MP10INFO The unit has a restart prevention device. After you have rectified thefault, interrupt the mains voltage. This unlocks the restart preventiondevice and the LEDs H1 and H2 go out.INFO Connect the trigger unit MP10 in accordance with the circuit dia-gram. Protect the trigger unit with a delayed-action fuse (FC2) ofmax. 4 A. In order to guarantee the protection function, install thetrigger unit as the first element in the control power circuit.Terminal box