Information On Maintenance - Immergas MAGIS M4-30 Use And Installation

INFORMATION ON MAINTENANCE.

1) Checks in the area.
Before starting work on systems containing ammable refrigerants, safety checks must be performed to guarantee that the
risk of ammability is reduced to a minimum. Before performing repairs on chilling systems, follow the precautions below.
2) Work procedure.
e jobs must be carried out according to a consolidated safety procedure to reduce the risk of refrigerant or ammable
vapour leaks during work to a minimum.
3) Work area.
All maintenance personnel and anyone else working in the involved area must be informed as to the nature of the work
carried out. Avoid working in con ned spaces.
delimited. Make sure that there are safety conditions within the area to prevent the risk of refrigerant leaks.
4) Refrigerant leak check.
e area must be checked with an adequate refrigerant detector before and during the jobs, to guarantee that the technician
is aware of the presence of potentially ammable atmospheres. Make sure that the leak detector is suitable to be used with
ammable refrigerants, namely without electric discharges, appropriately sealed or inherently safe.
5) Presence of a re extinguisher.
If hot work needs to be done on the chilling system or on related parts, adequate re ghting devices must be available.
Check that there is a dry re extinguisher or a CO
6) No source of ignition.
No one carrying out work in relation to a chilling system that entails exposure of pipes that contain or have contained
ammable refrigerant must use sources of ignition implicating the risk of re or explosion. All possible sources of ignition,
including cigarette embers, must be kept su ciently far from the place of installation, repair, removal and disposal, during
which the ammable refrigerant could be released into the surrounding area. Before starting the work, the area around
the appliance must be monitored to make sure there are no ammability hazards or ignition risks. "NO SMOKING" signs
must be applied.
7) Ventilated area.
Make sure that the area is outdoors or appropriately ventilated before entering it or performing hot work. A certain venti-
lation level must also be guaranteed while carrying out the work. Ventilation must safely release the dispersed refrigerant
and preferably eject it into the outside atmosphere.
8) Checks on the chilling equipment.
When replacing electric components, these must be suitable for the purpose for which they are used and comply with the
correct speci cations.
Should any doubts arise, contact the Authorised Immergas Technical Service for assistance.
be applied to systems that make use of ammable refrigerants:
• e recharging amount depends on the size of the room where the appliances containing the refrigerant are installed;
• Ventilation devices must run regularly and the ejection routes must not be obstructed;
• Illegible markings or writings must be corrected.
• Chilling lines or refrigeration components must be installed in a position where they are unlikely to be exposed to any
substance that can corrode components containing refrigerants, unless the components themselves are made of materials
inherently resistant to corrosion or have been adequately protected against corrosion.
9) Checks on electrical devices.
Repair and maintenance operations on electric components must include preventive safety checks and inspection proce-
dures of the components. If a fault occurs that could jeopardise safety, the circuit must not be powered until the issue has
been resolved in a satisfactory way. If it is not possible to immediately eliminate the fault, but the system needs to keep
running, a temporary solution must be found.
ties are informed thereof.
e initial safety checks include making sure:
• at the capacitors are discharged: this is essential to avoid the possibility of electrical discharges;
• at there are no live components or cables during charging, recovery or purging of the circuit;
• at a compliant earthing system is in place.
e area in the immediate vicinity of the work eld must be appropriately
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e manufacturer's guidelines for maintenance and service must be complied with that all times.
is must be communicated to the owner of the equipment so that all par-
re extinguisher adjacent to the recharge area.
e following controls must