GEA Bock HG7 R134a - Manual (Page 16)

16
D
GB
F
E
96182-01.2015-DGbFEI
400 V
Direktstart YY Teilwicklungsstart Y/YY
1V1 1W1 1U1
2W1 2V1 2U1
L3 L2 L1 L3 L2 L1
L3 L2 L1
1V1 1W1 1U1
2W1 2V1 2U1
Direct start YYY Part winding start Δ/YYY
ATTENTION! Failure to do this results in opposed rotary fields and results in
damage to the motor. After the motor starts up via partial winding
1, partial winding 2 must be switched on after a maximum delay of
one second . Failure to comply can adversely affect the service life
of the motor.
The motor is wired for direct start (YYY) at the factory. For part winding start Δ/YYY the bridges must
be removed and the motor feed line connected according to the circuit diagram:
INFO! When testing coils with resistance tester, please note that partial
winding 1 and partial winding 2 are wired internally in HGX7.
5.3 Standard motor, design for direct or part winding start
Designation on the name plate Sticker on the terminal box
∆/YYY
Compressors with this marking are suitable for direct or partial winding start. The motor winding is
subdivided into two parts: Partial winding 1 = 60% and part winding 2 = 40%. This winding division
reduces the start-up current needed for a part winding start to approx. 65% of that for a direct start.
INFO! A mechanical unloaded start with bypass solenoid valve is
not required.
5| Electrical connection