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4.6.7.1
Electrical connection of the cooling unit
The device corresponds to overvoltage category II.
Fulfill the following general requirements to ensure safe and reliable operation of the cooling unit:
•
Connection of an upstream temperature control on the feed side is prohibited.
•
Connect the fuse specified on the type plate as line protection, see chapter "Type plate", Page 23 und "Adapting the unit
to the mains voltage", Page 48.
•
Always connect the cooling unit to the mains via a disconnecting device (switch/contactor).
–
The disconnecting device must have a contact opening of 3 mm and comply with overvoltage category III. The
disconnecting device is provided and fitted by the customer.
•
Install an all-pole sine filter (phase-phase and phase-earth) when using a frequency converter.
Fig. 20: Cooling unit mains plug
1
Mains plug X50
2
Mating plug
NOTE
Protective conductors in the mains connection cable are not regarded as potential equalization conductors.
Prerequisite
DANGER – Danger to life due to electric shock. Make sure that the unit is voltage-free.
•
All general requirements for safe and reliable operation are fulfilled.
Procedure
1.
Connect to the mains according to the circuit diagram, see chapter "Electrical circuit diagram", Page 41.
2.
Open the cage clamp terminal of the mating plug with the flat screwdriver and connect the cables on the mating plug.
–
Firmly insert the screwdriver into the cage clamp terminal. Never turn, this will damage the cage clamp terminal.
3.
Plug the mating plug into the mains plug X50.
4.
Before switching on, make sure that the mains voltage matches the data on the type plate and that there is a right-hand
field of rotation.
The cooling unit is connected electrically.
Operating Manual | Attachment and Installation Cooling Units | Multi Controller (MC) – 400 / 460 V, 3~ | 086100124
3
Cable 1.5 to 2.5 mm², stripping length 13 to 15 mm
4
Screwdriver (flat, max. 3.5 mm)
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