9
Failure to properly drain and vent coils
when not in use during freezing
temperature may result in coil and
equipment damage.
Rotation must be checked
MOTORS AND COMPRESSORS of 3
phase units at startup by a qualified
service technician. Scroll
compressors are directional and can
be damaged if rotated in the wrong
direction. Compressor rotation must
be checked using suction and
discharge gauges. Fan motor rotation
must be checked for proper operation.
Alterations must only be made at the
unit power connection
WATER PRESSURE
Prior to connection of condensing
water supply, verify water pressure is
less than maximum pressure of
2068.4 kpa (300psi). To prevent injury
or death due to instantaneous release
of high pressure water, relief valves
must be field supplied on system
water piping.
Do not use oxygen, acetylene or air in
place of refrigerant and dry nitrogen
for leak testing. A violent explosion
may result causing injury or death.
Always use a pressure regulator,
valves and gauges to control incoming
pressures when pressure testing a
system. Excessive pressure may
cause line ruptures, equipment
damage or an explosion which may
result in injury or death.
Do not work in a closed area where
refrigerant or nitrogen gases may be
leaking. A sufficient quantity of vapors
may be present and cause injury or
death.
Do not clean DX refrigerant coils with
hot water or steam. The use of hot
water or steam on refrigerant coils will
cause high pressure inside the coil
tubing and damage to the coil.
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