Structural Concepts Harmony HMBC6 handleiding

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Structural Concepts

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Handleiding

Harmony® User Manual 15

Preventive Maintenance

• 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 shall be checked with an appropriate refrigerant detector prior to and during work, to ensure the technician is

aware of potentially toxic or ammable atmospheres. Ensure that the leak detection equipment being used is suitable for

use with all applicable refrigerants, i.e., non-sparking, adequately sealed, or intrinsically safe.

• If any hot work is to be conducted on the refrigerating equipment or any associated parts, appropriate re extinguishing

equipment shall be available on hand. A dry chemical or CO2 re extinguisher should be adjacent to the charging area.

• No person carrying out work in relation to a refrigerating system which involves exposing any pipe work 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 and disposal, during

which refrigerant can possibly be released to the surrounding space. Prior to work taking place, the area around the

equipment shall be surveyed to make sure that there are no ammable hazards or ignition risks. “No Smoking” signs shall

be displayed.

• 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 refrigerating 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 check shall be applied to installation 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 refrigeration 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.

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:

a. That capacitors are discharged: this shall be done in a safe manner to avoid possibility of sparking;

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.

Maintenance and Service Notes

WARNING! TURN OFF CASE BEFORE PERFORMING PREVENTATIVE MAINTENANCE

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