Manual de uso Premium PRF36DX Refrigerador

Manual de uso

3

Checking for presence of refrigerant, The area shall

be checked with an appropriate refrigerant detector

prior to and during work, to ensure the technician

is aware of potentially toxic or  lammable

atmospheres. Ensure that the leak detection

equipment being used is suitable for use with all

applicable refrigerants, i.e., nonsparking,

adequately sealed, or intrinsically safe.

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

ventil lation shall continue during the period that the

work is carried out. The ventilation should safely

disperse any rel leased refrigerant and preferably

expel it externally into the atmosphere.

Detection of ammable refrigerants: Under no

circumstances shall potential sources of ignition be

used in the searching for or detection of refrigerant

leaks. A halide torch (or any other detector using a

naked ame) shall not be used.

b) that no live electrical components and wiring are

exposed while charging,recovering or purging the

system;

c) that there is continuity of earth bonding.

SERVICING

The following checks shall be applied to installations

using FLAMMABLE REFRIGERANTS:

a) the actual REFRIGERANT CHARGE is in accordance

with the room size within which the refrigerant

containing parts are installed;

b) the ventilation machinery and outlets are operating

adequately and are not obstructed;

c) if an indirect refrigerating circuit is being used, the

secondary circuit shall be checked for the presence of

refrigerant;

d) marking to the equipment continues to be visible

and legible. Markings and signs that are illegible shall

be corrected;

e) 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.

Initial safety checks shall include:

a) that capacitors are discharged: this shall be done in

a safe manner to avoid possibility of sparking;

REPAIRS 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 specication, damage

to seals, incorrect tting 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 ammable

atmospheres. Replacement parts shall be in

accordance with the manufacturer’s specications.

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.

Intrinsically safe components are the only types that

can be worked on while live in the presence of a

ammable atmosphere. The test apparatus shall be

at the correct rating.

Replace components only with parts specied by the

manufacturer. Other parts can result in the ignition

of refrigerant in the atmosphere from a leak.

Replace components only with parts specied by the

manufacturer. Other parts can result in the ignition

of refrigerant in the atmosphere from a leak.

LABELLING

Equipment shall be labelled stating that it has been

de-commissioned and emptied of refrigerant. The

label shall be dated and signed. For appliances

containing FLAMMABLE REFRIGERANTS, ensure that

there are labels on the equipment stating the

equipment contains FLAMMABLE REFRIGERANT.

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