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09790-02.2018-DGbFEIRu
A start unloader is necessary for Y/Δ start (special motor).
• Fit the non-return valve in the discharge pipe
• Rate the non-return valve according to the
operating conditions.
• Electrical trigger for the solenoid valve:
closed idle
• Cylinder cover for start unloader is marked
„SU“ (start unloader)
8.1 Start unloader (kit-Item No. 08981)
8| Accessories
8.2 Intermediate adapter for discharge line valve (Item No. 04362)
The adapter for the discharge line valve can be used
to move the compressor discharge gas connection
upwards. This makes it easier to remove the
compressor from a refrigerating plant.
8.3 Additional fan (Item No. 80270)
When the HG8 compressor is used in the deep-
freeze range, the application limits can be extended
by additional cooling if the cylinder heads (see
limits of application diagramms). The kit contains
all necessary fastening parts for mounting on the
cylinder covers.
Fig. 25
Fig. 26
Fig. 27
Oil pump
ATTENTION The start unloader must only run during the start-up phase, approx.
5 seconds before to max. 5 seconds after the compressor starts.
Otherwise there is a risk of overheating from bypass operation.
INFO
Astartunloaderisnotrequiredforpartwindingstart(PWstart,
standard motor). But the start-up current for part winding start
can be reduced by an additional 10 % by using a mechanical start
unloader
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