Manual Hisense AP0625CR1W Air Conditioner

Manual

Safety Information (continued)

The basic installation work procedures are the same as the

conventional refrigerant (R22 or R410A).However, pay attention to

the following :

1

. Transport of equipment containing flammable refrigerants

Compliance with the transport regulations.

2

. Marking of equipment using signs

Compliance with local regulations.

3

. Disposal of equipment using flammable refrigerants

Compliance with national regulations.

4

. Storage of equipment/appliances

The storage of equipment should be in accordance with the

manufacturer

5

. Storage of packed (unsold) equipment

Storage package protection should be constructed such that

mechanical damage to the equipment inside the package will

not cause a leak of the refrigerant charge.

The maximum number of pieces of equipment permitted to be

stored together will be determined by local regulations.

6

. Information on servicing

Checks to the area: Prior to beginning work on systems

containing ammable refrigerants, safety checks are necessary

to ensure that the risk of ignition is minimised. For repair to the

refrigerating system, the following precautions shall be

complied with prior to conducting work on the system.

W

ork procedure: Work shall be undertaken under a controlled

procedure so as to minimise the risk of ammable gas or

vapour being present while the work is being performed.

G

eneral work area: All maintenance staff and others working in

the local area shall be instructed on the nature of work being

carried out. Work in conned spaces shall be avoided. The area

around the workspace shall be sectioned off. Ensure that the

conditions within the area have been made safe by control of

ammable material.

C

hecking 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 ammable

atmospheres. Ensure that the leak detection equipment being

used is suitable for use with ammable refrigerants, i.e. non-

sparking, adequately sealed or intrinsically safe.

P

resence of fire extinguisher: If any hot work is to be conducted

on the refrigeration equipment or any associated parts,

appropriate re extinguishing equipment shall be available to

hand. Have a dry powder or CO2 re extinguisher adjacent to

the charging area.

N

o ignition sources: No person carrying out work in relation to

a refrigeration system which involves exposing any pipe work

that contains or has contained ammable refrigerant shall use

any sources of ignition in such a manner that it may lead to the

risk ofre or explosion. All possible ignition sources, including

cigarette smoking, should be kept sufciently far away from the

site of installation, repairing, removing anddisposal, during

which ammable 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

ammable hazards or ignition risks.“No Smoking”signs shall be

displayed.

's instructions.

7. 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 specication,

damage to seals,

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 ammable atmospheres.

incorrect tting of glands, etc.

Precautions for using R32 refrigerant

3

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.

C

hecks to the refrigeration equipment: Where electrical

components are being changed, they shall be t for the purpose

and to the correct specication. At all times the manufacturer's

maintenance and service guidelines shall be followed. If indoubt

consult the manufacturer's technical department for assistance.

The following checks shall be applied to installations using

ammable 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.

C

hecks 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.

Rating

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