RPC26MC User Manual

Rinnai 7 Portable Room AC OIM

6) No 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 su󰀩ciently

far away from the site of installation, repairing, removing and disposal, 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.

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 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 in doubt 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.

9) 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.

7. Repairstosealedcomponents

1) 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.

2) 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 a󰀨ected. 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 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. Replacement parts shall be in accordance with the manufacturer’s specications.

NOTE: The use of silicon sealant may inhibit the e󰀨ectiveness of some types of leak detection equipment.

Intrinsically safe components do not have to be isolated prior to working on them.

SAFETY & IMPORTANT INFORMATION

User Manual - Page 7