Before Installation - Mitsubishi Electric PUD-SWM AA Série Manuel D'installation

1. Safety precautions

1.1. Before installation

CAUTION:
• Do not use the unit in an unusual environment. If the
outdoor unit is installed in areas exposed to steam,
volatile oil (including machine oil), or sulfuric gas,
areas exposed to high salt content such as the
en
seaside, or areas where the unit will be covered by
snow, the performance can be significantly reduced
and the internal parts can be damaged.
• Do not install the unit where combustible gases
may leak, be produced, flow, or accumulate. If com-
bustible gas accumulates around the unit, fire or
explosion may result.
• The outdoor unit produces condensation during
the heating operation. Make sure to provide drain-
age around the outdoor unit if such condensation is
likely to cause damage.
• Remove the compressor's fixing component in ac-
cordance with the NOTICE attached to the unit. Run-
ning the unit with the fixing component mounted
will result in increased noise.
1.2. Before installation (relocation)
CAUTION:
• Be extremely careful when transporting or install-
ing the units. Two or more persons are needed to
handle the unit, as it weighs 20 kg or more. Do not
grasp the packaging bands. Wear protective gloves
to remove the unit from the packaging and to move
it, as you can injure your hands on the fins or the
edge of other parts.
• Be sure to safely dispose of the packaging mate-
rials. Packaging materials, such as nails and other
metal or wooden parts may cause stabs or other in-
juries.
1.3. Before electric work
CAUTION:
• Be sure to install circuit breakers. If not installed,
electric shock may result.
• For the power lines, use standard cables of suffi-
cient capacity. Otherwise, a short circuit, overheat-
ing, or fire may result.
• When installing the power lines, do not apply ten-
sion to the cables. If the connections are loosened,
the cables can snap or break and overheating or fire
may result.
3
• When installing the unit in a hospital or communi-
cations office, be prepared for noise and electronic
interference. Inverters, home appliances, high-
frequency medical equipment, and radio commu-
nications equipment can cause the outdoor unit to
malfunction or breakdown. The outdoor unit may
also affect medical equipment, disturbing medical
care, and communications equipment, harming the
screen display quality.
• When the unit is running, vibrations or the noise of
refrigerant running may be heard from the exten-
sion piping. Try to avoid installing the piping to thin
walls, etc. as much as possible and provide sound
insulation with the piping cover, etc.
• The base and attachments of the outdoor unit must
be periodically checked for looseness, cracks or
other damage. If such defects are left uncorrected,
the unit may fall down and cause damage or injuries.
• Do not clean the outdoor unit with water. Electric
shock may result.
• Tighten all flare nuts to specification using a torque
wrench. If tightened too much, the flare nut can
break after an extended period and refrigerant can
leak out.
• Be sure to ground the unit. Do not connect the
ground wire to gas or water pipes, lightning rods, or
telephone grounding lines. If the unit is not properly
grounded, electric shock may result.
• Use circuit breakers (ground fault interrupter, iso-
lating switch (+B fuse), and molded case circuit
breaker) with the specified capacity. If the circuit
breaker capacity is larger than the specified capac-
ity, breakdown or fire may result.