KRSL series
Page
18
4.5 ELECTRICAL
Before installation, the electrical supply should be checked for adequate wire size and capacity.
User must comply with national & local electrical codes. The codes specify the surrounding
clearance requirement for the electrical panel. Wiring work should be undertaken only by a
qualified electrician in compliance with OSHA, national or local electrical code. KRSL
compressors provide wiring diagrams for user reference. Refer to the electrical control schematic
in the parts manual for wiring diagrams. A dedicated and fused disconnect switch or circuit
breaker should be purchased for the installation. Any unreasonable voltage imbalance (5%)
between phases must be eliminated and low voltage problems must be corrected to prevent
excessive current draw. Air compressors must be grounded in accordance with applicable codes,
regulations and requirement.
Kaishan Compressor would like to emphasize the importance of providing adequate
grounding for air compressors. The common practice of grounding units to a
building’s structural steel may not provide adequate grounding protection, as paint
and corrosion build-up may exist.
All electrical supply cables must be adequately sized to prevent overheating due to
current draw.
Enclosure panels and drive grille must be fastened in place before starting the
compressor and never removed before lock out / tag out of the main power supply.
A knock out is provided for an incoming power connection. If a different location for the starter
hole is needed, the certified technician must make sure to keep control box clean after the hole is
created. The original hole must be capped if another hole is used. Inspect incoming voltage to
match the compressor’s specification. Inspect motor starter and overload heater sizes. Check all
electrical connections L1-L2-L3 for tightness and cleanliness.
4.6 MOTOR ROTATION INSPECTION
Motor rotation must be checked after the wiring has been installed. Operating the compressor in
incorrect rotation will result in severe damage to the compressor and warranty coverage will be
voided. Motor rotation can be viewed through the opening in the drive grille. The drive motor
end of the compressor is marked with an arrow noting the proper rotation.
