GB
81
COMPETENCE OF SERVICE PERSONNEL
General
• Special training additional to usual refrigerating
equipment repair procedures is required when
equipment with flammable refrigerants is affected.
• In many countries, this training is carried out by
national training organisations that are accredited to
teach the relevant national competency standards
that may be set in legislation.
• The achieved competence should be documented
by a certificate.
Training
The training should include the substance of the
following:
• Information about the explosion potential of
flammable refrigerants to show that flammables may
be dangerous when handled without care.
• Information about potential ignition sources,
especially those that are not obvious, such as lighters,
light switches, vacuum cleaners, electric heaters.
• Information about the different safety concepts:
- Unventilated – (see Clause GG.2) Safety of the
appliance does not depend on ventilation of the
housing. Switching off the appliance or opening of
the housing has no significant effect on the safety.
Nevertheless, it is possible that leaking refrigerant
may accumulate inside the enclosure and flammable
atmosphere will be released when the enclosure is
opened.
- Ventilated enclosure – (see Clause GG.4) Safety of
the appliance depends on ventilation of the housing.
Switching off the appliance or opening of the
enclosure has a significant effect on the safety. Care
