Mitsubishi Electric PUMY-P60NKMU1 Manuel D'installation page 3

1. Safety precautions
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 suf cient capacity. Otherwise, a
short circuit, overheating, or re may result.
When installing the power lines, do not apply tension to the cables. If the
connections are loosened, the cables can snap or break and overheating or
re may result.
1. . Before starting the test run
Caution:
Turn on the main power switch more than 1 hours before starting operation.
Starting operation just after turning on the power switch can severely damage
the internal parts. Keep the main power switch turned on during the operation
season.
Before starting operation, check that all panels, guards and other protective
parts are correctly installed. Rotating, hot, or high voltage parts can cause
injuries.
1. . Using R 10A refrigerant air conditioners
Caution
Use C1 0 copper phosphorus, for copper and copper alloy seamless pipes,
to connect the refrigerant pipes. Make sure the insides of the pipes are clean
and do not contain any harmful contaminants such as sulfuric compounds,
o idants, debris, or dust. Use pipes with the speci ed thickness. (Refer to
page 6) Note the following if reusing e isting pipes that carried R
- Do not use thin pipes. (Refer to page 6)
Store the pipes to be used during installation indoors and keep both ends of
the pipes sealed until just before bra ing. (Leave elbow joints, etc. in their
packaging.) If dust, debris, or moisture enters the refrigerant lines, oil dete-
rioration or compressor breakdown may result.
Use ester oil, ether oil, alkylben ene oil (small amount) as the refrigeration
oil applied to the ared sections. If mineral oil is mi ed in the refrigeration
oil, oil deterioration may result.
Do not use refrigerant other than R 10A refrigerant. If another refrigerant is
used, the chlorine will cause the oil to deteriorate.
1.6. Precautions for salt damage–resistant model
("-BS" model)
Although this product (only "-BS" model) has been designed to be resistant to salt
damage, observe the following precautions to maintain the performance of the unit.
1. Avoid installing the unit in a location where it will be exposed directly to seawater
or sea breeze.
2. If the cover panel may become covered with salt, be sure to install the unit in a
location where the salt will be washed away by rainwater. (If a sunshade is installed,
3. To ensure that water does not collect in the base of the outdoor unit, make sure
that the base is level, not at angle. Water collecting in the base of the outdoor unit
could cause rust.
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 prop-
erly grounded, electric shock may result.
Use circuit breakers (ground fault interrupter, isolating switch ( B fuse),
and molded case circuit breaker) with the speci ed capacity. If the circuit
breaker capacity is larger than the speci ed capacity, breakdown or re
may result.
Do not touch any switch with wet hands. Electric shock may result.
Do not touch the refrigerant pipes with bare hands during operation. The
refrigerant pipes are hot or cold depending on the condition of the owing
refrigerant. If you touch the pipes, burns or frostbite may result.
After stopping operation, be sure to wait at least minutes before turning off
the main power switch. Otherwise, water leakage or breakdown may result.
Use the following tools speci cally designed for use with R 10A refrigerant.
The following tools are necessary to use R 10A refrigerant. Contact your
nearest dealer for any questions.
refrigerant.
Gauge manifold
Charge hose
Gas leak detector
Torque wrench
Be sure to use the correct tools. If dust, debris, or moisture enters the refriger-
ant lines, refrigeration oil deterioration may result.
Do not use a charging cylinder. If a charging cylinder is used, the composition
of the refrigerant will change and the ef ciency will be lowered.
4. If the unit is installed in a coastal area, clean the unit with water regularly to remove
any salt build-up.
5. If the unit is damaged during installation or maintenance, be sure to repair it.
6. Be sure to check the condition of the unit regularly.
7. Be sure to install the unit in a location with good drainage.
Tools (for R410A)
Flare tool
Size adjustment gauge
Vacuum pump adapter
Electronic refrigerant charging scale
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