Information On Maintenance - Immergas Magis M 4 EH3 Use And Installation

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INFORMATION ON MAINTENANCE.

1. Checks in the area.
Before starting work on systems containing flammable refrigerants, safety checks must be performed to guarantee that the risk of flam-
mability is reduced to a minimum. Before performing repairs on chilling systems, follow the precautions below.
2. Work procedure.
The jobs must be carried out according to a consolidated safety procedure to reduce the risk of refrigerant or flammable 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 confined spaces. The area in the immediate vicinity of the work field must be appropriately delimited. Make sure that there are
safety conditions within the area to prevent the risk of refrigerant leaks.
4. Refrigerant leak check.
The 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 flammable atmospheres. Make sure that the leak detector is suitable to be used with flammable refrigerants,
namely without electric discharges, appropriately sealed or inherently safe.
5. Presence of a fire extinguisher.
If hot work needs to be done on the chilling system or on related parts, adequate firefighting devices must be available. Check that there is
a dry fire 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 flammable refrig-
erant must use sources of ignition implicating the risk of fire or explosion. All possible sources of ignition, including cigarette embers,
must be kept sufficiently far from the place of installation, repair, removal and disposal, during which the flammable 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
flammability 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 ventilation 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 specifi-
cations. The manufacturer's guidelines for maintenance and service must be complied with that all times. Should any doubts arise, con-
tact the Authorised Immergas Technical Service for assistance. The following controls must be applied to systems that make use of flam-
mable refrigerants:
- The 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 procedures 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 satisfacto-
ry way. If it is not possible to immediately eliminate the fault, but the system needs to keep running, a temporary solution must be found.
This must be communicated to the owner of the equipment so that all parties are informed thereof.
The initial safety checks include making sure:
- That the capacitors are discharged: this is essential to avoid the possibility of electrical discharges;
- That there are no live components or cables during charging, recovery or purging of the circuit;
- That a compliant earthing system is in place.
10. Repair of sealed components.
fire extinguisher adjacent to the recharge area.
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