Table of Contents
Advertisement
4| Compressor assembly
4.9
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 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.
5| Electrical connection
5.1
General safety
5.2
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. OSHA, UL/CSA) as well as with the manufac-
turer's information. 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.
Risk of electric shock! High voltage!
Only carry out work when the electrical system is disconnected
from the power supply!
When attaching accessories with an electrical cable, a minimum
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
relieves 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.
US
13
Advertisement
Table of Contents
