C6.2.38/0719/E 17
4.2.1 Terminal connections
WARNING
Ignition source in a potentially flammable atmosphere! Fire hazard! Any
work on the energized terminals in the compressor terminals could create an
ignition. Do not touch the energized terminals with a tool or cable when the
compressor is energized.
Mechanical stress or shock! Overheating! Terminal Fusite damage and
leakage! Mechanical stress and shocks to the Fusite must be avoided as they
could damage the glass and/or ceramic. This might result in hermetic failure
or loss of terminal performance. Precautions are required to prevent striking
or bending of pins. Bent or damaged pins may result in loss of hermeticity
and/or terminal performance.
Ensure correct connection of cables to the compressor terminal Fusite to avoid
local overheating of Fusite pins which might lead to refrigerant leaks.
4.2.2 Molded plug connection
WARNING
Electric arc! Explosion hazard! Removing the molded plug cable while
under load or electrically energized will create arcing between the connection
pins and the cable connectors. Always shut off power supply before attaching
or removing the molded plug cable from the connection pins.
The molded plug connector must be smoothly pushed by hand towards the
connection pins of the compressor. Never use a tool to knock the molded plug
connector on the terminal pins as this could damage the glass inserts of the
pins.
It is mandatory to secure the molded plug cable on the connection pins with a
retainer.
Any rework on the terminal pins is strictly prohibited.
WARNING
Electrical shock hazard! Serious personal injuries and/or system
breakdown! Use R290 qualified and dedicated molded plug cables with
grounding connection only. Make sure to connect the grounding first before
attaching the molded plug cable to the connection pins of the compressor.
When removing the molded plug cable from the connection pins, disconnect
the grounding last.
YBVH* horizontal compressors are equipped with electrical connection pins ready for molded plug
connection. Their protection class is IP65. Specific molded plug power cables have been qualified
for use with R290. The R290 dedicated kit includes a special O-ring, a grounding connection and a
retainer – see Figures 14 to 16.
Figure 14: Circle fence with motor teminals
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