Zephir ZRP9000CB, Руководство пользователя

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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 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 charge size 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; refrigeration 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.
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: that capacitors are discharged: this shall be done in a safe manner to avoid possibility
of sparking; that there no live electrical components and wiring are exposed while charging, recovering or purging the
system; that there is continuity of earth bonding.
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
apparatus is mounted securely. Ensure that seals or sealing materials have not degraded such 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.
NOTE: The use of silicon sealant may inhibit the effectiveness of some types of leak detection equipment. Intrinsically
safe components do not have to be isolated prior to working on them.
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
permissible voltage and current permitted for the equipment in use.