HTW A3 Serie Manual De Usuario E Instalacion página 35

Grades:
1. If any part is damaged, please contact the dealer or a designated repair shop;
2. In case of any damage, turn off the air switch, disconnect the power supply, and contact the
dealer or a designated repair shop;
3. In any case, the power cord must be firmly grounded.
4. To avoid the possibility of danger, if the power cord is damaged, turn off the air switch and
disconnect the power supply. It must be replaced by the dealer or a designated repair shop.
INSTRUCTIONS FOR REPAIRING APPLIANCES CONTAINING
1 GENERAL INSTRUCTIONS
1.1 Zone control
Before starting work on systems containing flammable refrigerants, safety checks are necessary to
ensure that the risk of ignition is minimized. For refrigeration system repair, the following
precautions must be observed before conducting work on the system.
1.2 Work procedure
The work will be carried out in accordance with a controlled procedure that minimizes the risk of
the presence of flammable gas or vapor during the execution of the work.
1.3 General area of work
All maintenance personnel and others working in the local area will receive instructions on the
nature of the work being carried out. Work in confined spaces will be avoided. The area around the
workspace will be sectioned off. Ensure that conditions within the area have been made safe by
controlling flammable material.
1.4 Checking for the presence of refrigerant
The area will be checked with a suitable refrigerant detector before and during the work, to ensure
that the technician is aware of the existence of potentially flammable atmospheres. Make sure that
the leak detection equipment used is suitable for use with flammable refrigerants, ie non-sparking,
properly sealed, or intrinsically safe.
1.5 Presence of fire extinguisher
If any hot work is to be carried out on the refrigeration equipment or any associated part, adequate
fire extinguishing equipment must be available. Have a dry powder or CO2 fire extinguisher
adjacent to the charging area.
1.6 Without sources of ignition
No person performing work in connection with a refrigeration system that involves exposing any
piping that contains or has contained flammable refrigerant shall use any source of ignition in such
a manner as to create a risk of fire or explosion. All possible sources of ignition, including smoking,
must be kept far enough from the place of installation, repair, removal and disposal, during which
flammable refrigerant may be released into the surrounding space. Before work is carried out, the
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