Toyotomi SONZAI Series User Manual page 62

DEHUMIDIFIER
Presence of fi re extinguisher
If any hot work is to be conducted on the refrigeration equipment or any
associated parts, appropriate fi re extinguishing equipment shall be available
to hand. Have a dry powder or CO2 fi re extinguisher adjacent to the charging
area.
Ventilated area
Ensure that the area is in the open or that it is adequately ventilated before
breaking into the system or conducting any hot work. A degree of ventilation
shall continue during the period that the work is carried out. The ventilation
should safely disperse any released refrigerant and preferably expel it
externally into the atmosphere.
Checks to the refrigeration equipment
Where electrical components are being changed, they shall be fi t for the
purpose and to the correct specifi cation. At all times the manufacturer's
maintenance and service guidelines shall be followed. If in doubt, consult the
manufacturer's technical department for assistance.
The following checks shall be applied to installations using fl ammable
refrigerants:
• The actual refrigerant charge is in accordance with the room size within which
the refrigerant containing parts are installed.
• The ventilation machinery and outlets are operating adequately and are not
obstructed.
• If an indirect refrigerating circuit is being used, the secondary circuit shall be
checked for the presence of refrigerant.
• Marking to the equipment continues to be visible and legible. Markings and
signs that are illegible shall be corrected.
CHECKS TO ELECTRICAL DEVICES
Repair and maintenance to electrical components shall include initial safety
checks and component inspection procedures. 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.
Initial safety checks shall include:
62
GB