Black & Decker BXAC40018GB Original Instructions Manual page 18

ENGLISH (Original instructions)
from the site of installation, repairing, removing
and disposal, during which refrigerant can
possibly be released to the surrounding space.
Prior to work taking place, the area around
the equipment is to be surveyed to make sure
that there are no flammable hazards or ignition
risks. "No Smoking" signs shall be displayed.
7. 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.
8. Checks to the refrigerating equipment - Where
electrical components are being changed, they
shall be fit for the purpose and to the correct
specification. 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 flammable 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;
♦
Refrigerating pipe or components are
installed in a position where they are
unlikely to be exposed to any substance
which may corrode refrigerant containing
components, unless the components
are constructed of materials which are
inherently resistant to being corroded or
are suitably protected against being so
corroded.
9. Checks to electrical devices
♦
Repair and maintenance to electrical
18
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:
♦
That capacitors are discharged: this
shall be done in a safe manner to avoid
possibility of sparking;
♦
That no live electrical components and
wiring are exposed while charging,
recovering or purging the system;
♦
That there is continuity of earth bonding.
10. Repairs to sealed components.
♦
During repairs to sealed components, all
electrical supplies shall be disconnected from
the equipment being worked upon prior to any
removal of sealed covers, etc. If it is absolutely
necessary to have an electrical supply to
equipment during servicing, then a permanently
operating form of leak detection shall be
located at the most critical point to warn of a
potentially hazardous situation.
♦
Particular attention shall be paid to the
following to ensure that by working on electrical
components, the casing is not altered in such
a way that the level of protection is affected.
This shall include damage to cables, excessive
number of connections, terminals not made
to original specification, damage to seals,
incorrect fitting of glands, etc.
♦
Ensure that the apparatus is mounted securely.
Ensure that seals or sealing materials have
not degraded to the point that they no longer
serve the purpose of preventing the ingress of
flammable atmospheres.
♦
Replacement parts shall be in accordance with
the manufacturer's specifications.
11. Repair to intrinsically safe components
♦
DO NOT apply any permanent inductive
or capacitance loads to the circuit without
ensuring that this will not exceed the