Before Getting Installed; Before Starting The Test Run; Electrical Work - Mitsubishi Electric Fresh Master GUF-50RD3 Installation Instructions Manual

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1.5. Before getting installed

Caution:
Do not install the unit where combustible gas may leak.
- If the gas leaks and accumulates around the unit, an explosion
may result.
Do not use the Fresh Master where food, pets, plants, preci-
sion instruments, or artwork are kept.
- The quality of the food, etc. may deteriorate.
Do not use the Fresh Master in special environments.
- Oil, steam, sulfuric smoke, etc. can significantly reduce the per-
formance of the Fresh Master or damage its parts.
When installing the unit in a hospital, communication station,
or similar place, provide sufficient protection against noise.
- The inverter equipment, private power generator, high-frequency
medical equipment, or radio communication equipment may cause
the Fresh Master to operate erroneously, or fail to operate. On the
other hand, the Fresh Master may affect such equipment by creat-
ing noise that disturbs medical treatment or image broadcasting.
Do not install the unit on a structure that may cause leakage.
- When the room humidity exceeds 80% or when the drain pipe is
clogged, condensation may drip from the Fresh Master. Perform
collective drainage work together with the outdoor unit, as re-
quired.
1.6. Before getting installed (moved) -

electrical work

Caution:
Ground the unit.
- Do not connect the ground wire to gas or water pipes, lightning
rods, or telephone ground lines. Improper grounding may result
in electric shock.
Install the power cable so that tension is not applied to the cable.
- Tension may cause the cable to break and generate heat and
cause a fire.
Install an leak circuit breaker, as required.
- If an leak circuit breaker is not installed, electric shock may re-
sult.
Use power line cables of sufficient current carrying capacity
and rating.
- Cables that are too small may leak, generate heat, and cause a fire.
Use only a circuit breaker and fuse of the specified capacity.
- A fuse or circuit breaker of a larger capacity or a steel or copper
wire may result in a general unit failure or fire.
Do not wash the Fresh Master.
- Washing them may cause an electric shock.
Be careful that the installation base is not damaged by long use.
- If the damage is left uncorrected, the unit may fall and cause
personal injury or property damage.
Be very careful about product transportation.
- Only one person should not carry the product if it weighs more
than 20 kg.
- Fresh Master use PP bands for packaging. Do not use any PP
bands for a means of transportation. It is dangerous.
- Do not touch the heat exchanger fins. Doing so may cut your
fingers.
- When transporting the outdoor unit, suspend it at the specified
positions on the unit base. Also support the outdoor unit at four
points so that it cannot slip sideways.
Safely dispose of the packing materials.
- Packing materials, such as nails and other metal or wooden parts,
may cause stabs or other injuries.
- Tear apart and throw away plastic packaging bags so that chil-
dren can not play with them. If children play with a plastic bag
which was not torn apart, they face the risk of suffocation.
4

1.7. Before starting the test run

Caution:
Turn on the power at least 12 hours before starting operation.
- Starting operation immediately after turning on the main power
switch can result in severe damage to internal parts. Keep the
power switch turned on during the operational season.
Do not touch the switches with wet fingers.
- Touching a switch with wet fingers can cause electrification.
Do not touch the refrigerant pipes during and immediately af-
ter operation.
- During and immediately after operation, the refrigerant pipes are
may be hot or cold, depending on the condition of the refrigerant
flowing through the refrigerant piping, compressor, and other re-
frigerant cycle parts. Your hands may suffer burns or frostbite if
you touch the refrigerant pipes.
Do not operate the Fresh Master and outdoor unit with the
panels and guards removed.
- Rotating, hot, or high-voltage parts can cause injuries.
Do not turn off the power immediately after stopping opera-
tion.
- Always wait at least five minutes before turning off the power.
Otherwise, water leakage and trouble may occur.

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