Maintenance - Sealey SAC16000 Instructions Manual

6.

MAINTENANCE

6.1. CLEANING THE AIR FILTER (FIG.9)
The air filter is removable for easy cleaning. The filters are situated at the rear of the unit, and are
held in place by plastic frames.
DO NOT operate the unit without an air filter, or the evaporator may be contaminated.
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6.1.1. Press the POWER button to switch off the unit. Unplug the power cord.
6.1.2. Remove the filter mesh from the unit.
To remove the upper filter: Using the finger grip, pull the top edge gently outwards to release
the holding lugs and remove the filter frame.
To remove the lower filter: Undo fixing screw and pull the frame gently outwards to release the holding lugs and remove filter frame.
6.1.3. Use a vacuum cleaner to suck dust from the filter.
6.1.4. Turn the filter over and rinse the air filter under running water. Let the water run through the filter in the opposite direction of air flow.
6.1.5. Set aside and allow the filter to air dry completely before reinstalling.
NOTE: Refitting the filter frames into the machine is the reverse of 6.1.2.
6.2. CLEANING UP OF REFRIGERANT
6.2.1. Gas/vapour heavier than air. May accumulate in confined spaces, particularly at or below ground level.
6.2.2. Eliminate every possible source of ignition.
6.2.3. Use appropriate personal protection equipment (PPE).
6.2.4. Evacuate unnecessary personnel, isolate, and ventilate area.
DO NOT get in eyes, on skin, or on clothing.
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DO NOT breathe vapours or gas.
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6.2.5. Prevent entry to sewers and public waters.
6.2.6. Stop the source of the release, if safe to do so. Consider the use of water spray to disperse vapours.
6.2.7. Isolate the area until gas has dispersed. Ventilate and gas test area before entering. Contact competent authorities after a spill.
6.3. STORAGE
6.3.1. If you will not be using the unit for an extended period of time (more than a few weeks) it is best to clean the unit and dry it out
completely. Please store the unit per the following steps:
6.3.2. Unplug the unit and remove exhaust hose and window kit.
6.3.3. Drain the remaining water from the unit via the drainage stopper (fig.7).
6.3.4. Clean the filter and let it dry completely in a shaded area.
6.3.5. Re-install the filter.
6.3.6. Store the unit in an upright position, in a well-ventilated, dry location.
6.4. FLAMMABLE REFRIGERANTS USED - R290 GAS SAFETY
6.4.1. CHECKS TO THE AREA
Prior to beginning work on systems containing flammable refrigerants, safety checks are necessary to ensure that the risk of ignition is
minimised. For repair to the refrigerating system, the following precaution shall be completed prior to conducting work on the system.
6.4.2. WORK PROCEDURE
Work shall be undertaken under a controlled procedure so as to minimise the risk of a flammable gas or vapour being present while the
work is being performed.
6.4.3. GENERAL 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 confined
spaces shall be avoided.
6.4.4. 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 flammable 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.
6.4.5. PRESENCE OF FIRE EXTINGUISHER
If any hot work is to be conducted on the refrigerating equipment or any associated parts, appropriate fire extinguishing equipment shall
be available to hand. Have a dry powder or CO2 fire extinguisher adjacent to the charging area.
6.4.6. NO IGNITION SOURCES
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 fire or explosion. All possible ignition sources, including cigarette smoking,
should be kept sufficiently 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 is to be surveyed to make sure that
there are no flammable hazards or ignition risks. "No Smoking" signs shall be displayed.
6.4.7. 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.
6.4.8. CHECKS TO THE REFRIGERATING 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 actual refrigerant charge 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.
• 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.
6.4.9. CHECKS TO ELECTRICAL DEVICES
Repair and maintenance to electrical components shall include initial safety checks and component inspection procedures. If a fault
© Jack Sealey Limited Original Language Version
FIG.9
SAC16000 Issue 1 03/01/24