Toshiba HWT-601XWHM3W-ETR Service Manual page 9

WARNING
Before starting to repair the Air to Water Heat Pump, read carefully through the Service Manual, and repair the
Air to Water Heat Pump by following its instructions.
Only qualified service person (*1) is allowed to repair the Air to Water Heat Pump.
Repair of the Air to Water Heat Pump by unqualified person may give rise to a fire, electric shocks, injury, water
leaks and/or other problems.
Only a qualified installer (*1) or qualified service person (*1) is allowed to carry out the electrical work of the Air
to Water Heat Pump.
Under no circumstances must this work be done by an unqualified individual since failure to carry out the work
properly may result in electric shocks and/or electrical leaks.
Wear protective gloves and safety work clothing during installation, servicing and removal.
When connecting the electrical wires, repairing the electrical parts or undertaking other electrical jobs, wear
gloves to provide protection for electricians, insulating shoes and clothing to provide protection from electric
shocks.
Failure to wear this protective gear may result in electric shocks.
Use wiring that meets the specifications in the Installation Manual and the stipulations in the local regulations and
laws.
Use of wiring which does not meet the specifications may give rise to electric shocks, electrical leakage, smoking
and/or a fire.
Only a qualified installer (*1) or qualified service person (*1) is allowed to undertake work at heights using a stand
General
of 50 cm or more.
When working at heights, use a ladder which complies with the ISO 14122 standard, and follow the procedure in
the ladder's instructions.
Also wear a helmet for use in industry as protective gear to undertake the work.
When working at heights, put a sign in place so that no-one will approach the work location, before proceeding
with the work.
Parts and other objects may fall from above, possibly injuring a person below.
Do not touch the aluminum fin of the outdoor unit.
You may injure yourself if you do so. If the fin must be touched for some reason, first put on protective gloves and
safety work clothing, and then proceed.
Do not climb onto or place objects on top of the outdoor unit.
You may fall or the objects may fall of the outdoor unit and result in injury.
When transporting the Air to Water Heat Pump, wear shoes with additional protective toecap.
When transporting the Air to Water Heat Pump, do not hold the bands around the packing carton.
You may injure yourself if the bands should break.
This Air to Water Heat Pump has passed the pressure test as specified in IEC 60335-2-40 Annex EE.
When you access inside of the electric cover to repair electric parts, wait for about five minutes after turning off
the breaker.
Do not start repairing immediately.
If a fault exists that could compromise safety, then no electrical supply shall be connected to the circuit until it is
satisfactorily dealt with. If the fault cannot be corrected immediately but it is necessary to continue operation, an
adequate temporary solution shall be used. This shall be reported to the owner of the equipment so all parties are
advised.
Electric shock
Initial safety checks shall include:
hazard
- that capacitors are discharged;
Touching the terminals of charged high-voltage capacitors may cause electric shock.
Natural discharge of the capacitor takes about five minutes.
- that no live electrical components and wiring are exposed while charging, recovering or purging the system;
- that there is continuity of earth bonding;
Place a "Work in progress" sign near the circuit breaker while the installation, maintenance, repair or removal work
is being carried out.
There is a danger of electric shocks if the circuit breaker is set to ON by mistake.
When checking the electric parts, removing the cover of the electric parts box of Indoor Unit and/or front panel of
Outdoor Unit inevitably to determine the failure, put a sign "Do not enter" around the site before the work. Failure
to do this may result in third person getting electric shock.
Prohibition
Before operating the Air to Water Heat Pump after having completed the work, check that the electrical parts box
cover of the indoor unit and service panel of the outdoor unit are closed, and set the circuit breaker to the ON
position. You may receive an electric shock if the power is turned on without first conducting these checks.
(*1) Refer to the "Definition of qualified installer or qualified service person".
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