Suction Pipe Filter And Filter Drier; Electrical Connection; Information For Contactor And Motor Contactor Selection - Danfoss BOCK HG88e Operating Manual

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6 | Compressor assembly

6.9 Suction pipe filter and filter drier

For systems with long pipes and higher degree of contamination, a filter on the suction-side is

recommended. The filter has to be be renewed depending on the degree of contamination (reduced

pressure loss).

Moisture in the refrigeration circuit can lead to crystal and hydrate formation. For this reason, we

recommend using a filter drier and a sight glass with a moisture indicator.

Electrical connection

DANGER

ATTENTION When attaching accessories with an electrical cable, a minimum

INFO

7.1 Information for contactor and motor contactor selection

All protection devices and switching or monitoring units must be fitted in accordance with the local

safety regulations and established specifications (e.g. VDE) as well as with the manufacturer's infor-

mation. Motor protection switches are required! Motor contactors, feed lines, fuses and motor

protection switches must be rated on the basis of the maximum working current (see name plate).

For motor protection use a current-dependent and time-delayed overload protection device for moni-

toring all three phases. Set the overload protection device so that it must be actuated within 2 hours,

if there is 1.2 times the max. working current.

16 | AQ451337713574en-000401

Risk of electric shock! High voltage!

Only carry out work when the electrical system is disconnected

from the power supply!

bending radius of 3 x the cable diameter must be maintained for

laying the cable.

Connect the compressor motor in accordance with the circuit diagram

(see inside of terminal box).

Use suitable cable entry point of the correct protection type (see

name plate) for routing cables into the terminal box. Insert the strain

reliefs and prevent chafe marks on the cables.

Compare the voltage and frequency values with the data for the

mains power supply.

Only connect the motor if these values are the same.

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