Mitsubishi Electric PCA-RP71HAQ / PUHZ-ZRP71VHA [2/24] Safetyprecautions

Contents

1. Safety precautions .....................................................................................2

2. Installation location ....................................................................................3

Installing the indoor unit ............................................................................3

Installing the refrigerant piping ..................................................................4

Drainage piping work .................................................................................6

Electrical work ...........................................................................................6

Test run ....................................................................................................10

Easy maintenance function .....................................................................12

1.2. Before installation or relocation

Caution:

•

Be extremely careful when transporting 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 as you can injure your hands on the ns or other parts.

•

Be sure to safely dispose of the packaging materials. Packaging materials, such

as nails and other metal or wooden parts may cause stabs or other injuries.

• Thermal insulation of the refrigerant pipe is necessary to prevent condensation.

If the refrigerant pipe is not properly insulated, condensation will be formed.

Warning:

• Ask a dealer or an authorized technician to install the unit.

• For installation work, follow the instructions in the Installation Manual and use

tools and pipe components specically made for use with refrigerant specied

the outdoor unit installation manual.

• The unit must be installed according to the instructions in order to minimize

the risk of damage from earthquakes, typhoons, or strong winds. An incor

rectly

installed unit may fall down and cause damage or injuries.

• The unit must be securely installed on a structure that can sustain its

weight.

• If the air conditioner is installed in a small room, measures must be taken to

prevent the refrigerant concentration in the room from exceeding the safety

limit in the event of refrigerant leakage. Should the refrigerant leak and cause

the concentration limit to be exceeded, hazards due to lack of oxygen in the

room may result.

• Ventilate the room if refrigerant leaks during operation. If refrigerant comes

into contact with a ame, poisonous gases will be released.

•

All electric work must be performed by a qualied technician according to

local regulations and the instructions given in this manual.

• Use only specied cables for wiring. The wiring connections must be made

securely with no tension applied on the terminal connections. Also, never

splice the cables for wiring (unless otherwise indicated in this document).

Failure to observe these instructions may result in overheating or a re.

• The terminal block cover panel of the unit must be rmly attached.

• Use only accessories authorized by Mitsubishi Electric and ask a dealer or

an authorized technician to install them.

•

The user should never attempt to repair the unit or transfer it to another location.

• After installation has been completed, check for refrigerant leaks. If refriger-

ant leaks into the room and comes into contact with the ame of a heater or

portable

cooking range, poisonous gases will be released.

• When installing or relocating, or servicing the air conditioner, use only the

specied refrigerant (R410A) to charge the refrigerant lines. Do not mix it with

any

other refrigerant and do not allow air to remain in the lines.

If air is mixed with the refrigerant, then it can be the cause of abnormal high pres-

sure in the refrigerant line, and may result in an explosion and other hazards.

The use of any refrigerant other than that specied for the system will cause

mechanical failure or system malfunction or unit breakdown. In the worst

case, this could lead to a serious impediment to securing product safety.

1.1. Before installation (Euvironment)

Caution:

• Do not use the unit in an unusual environment. If the air conditioner is installed

in areas exposed to steam, volatile oil (including machine oil), or sulfuric gas,

areas exposed to high salt content such as the seaside, the performance can

be signicantly reduced and the internal parts can be damaged.

•

Do not install the unit where combustible gases may leak, be produced, ow,

or accumulate. If combustible gas accumulates around the unit, re or explo-

sion

may result.

• Do not keep food, plants, caged pets, artwork, or precision instruments in the

direct airow of the indoor unit or too close to the unit, as these items can be

damaged

by temperature changes or dripping water.

• When the room humidity exceeds 80% or when the drainpipe is clogged,

water may drip from the indoor unit. Do not install the indoor unit where such

dripping can cause damage.

• When installing the unit in a hospital or communications ofce, be prepared for

noise and electronic interference. Inverters, home appliances, high-frequency

medical equipment, and radio communications equipment can cause the air

conditioner to malfunction or breakdown. The air conditioner may also affect

medical equipment, disturbing medical care, and communications equipment,

harming the screen display quality.

• Place thermal insulation on the pipes to prevent condensation. If the drain

pipe is installed incorrectly, water leakage and damage to the ceiling, oor,

furniture,

or other possessions may result.

• Do not clean the air conditioner unit with water. Electric shock may result.

• Tighten all are nuts to specication using a torque wrench. If tightened too

much, the are nut can break after an extended period.

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.

• Be sure to ground the unit. If the unit is not properly 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.

1. Safety precautions

1.4. Before starting the test run

Caution:

• Turn on the main power switch more than 12 hours before starting operation.

Starting operation just after turning on the power switch can severely damage

the internal parts.

• Before starting operation, check that all panels, guards and other protective

parts are correctly installed. Rotating, hot, or high voltage parts can cause

injuries.

•

Do not operate the air conditioner without the air lter set in place. If the air

lter is not installed, dust may accumulate and breakdown 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.

• After stopping operation, be sure to wait at least ve minutes before turning off

the main power switch. Otherwise, water leakage or breakdown may result.

► Before installing the unit, make sure you read all the “Safety precau-

tions”.

► Please

report to your supply authority or obtain their consent before

connecting this equipment to the power supply system.

Warning:

Describes precautions that must be observed to prevent danger of injury or

death to the user.

Caution:

Describes precautions that must be observed to prevent damage to the unit.

After installation work has been completed, explain the “Safety Precautions,” use, and

maintenance of the unit to the customer according to the information in the Operation

Manual and perform the test run to ensure normal operation. Both the Installation

Manual and Operation Manual must be given to the user for keeping. These manuals

must be passed on to subsequent users.

: Indicates a part which must be grounded.

Warning:

Carefully read the labels afxed to the main unit.

Note:

The phrase “Wired remote controller” in this installation manual refers to the PAR-21MAA. If you need any information for the other remote controller, please

refer

to either the installation manual or initial setting manual which are included in these boxes.

RG79D721H02_en.indd 2 2012/10/09 (火) 午後 3:13:35

Mitsubishi Electric PCA-RP71HAQ / PUHZ-ZRP71VHA [2/24] Safetyprecautions

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