Rev. 3 02-2021
76
MTEC.DXi.H/DXi.HF.GB-3 Use and Maintenance technical manual DXi.H/DXi.HF English
Emibyte DXi.H/DXi.HF
Direct expansion close control
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supervised by expert refrigeration technicians.
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If more restrictive norms not existing the intervention on the cooling circuit must be performed following the hereafter indication:
a)
Intervention risk valuation and analysis;
b)
Maintenance team training;
c)
Uninstallation and protection of devices to be repaired;
d)
Refrigerant recovery and vacuum execution;
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f) Intervention
authorisation;
g) Intervention
execution;
h)
Repaired devices test (pressure test, leak test, functional test);
i)
Devices re-installation, vacuum execution and refrigerant charge;
If the intevention requires a shut-off valve or interception valve must be removed, is suggest to replace the seals
with new ones.
During the welding and brazing operations all the heat sensitive devices must be removed or covered with wet
clothes.
All the disposal operations must be performed by expert technicians following the national legislation (destination
county).
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8. DECOMMISSIONING
• Do not dissipate the refrigerant in the environment.
• Before the unit disconnection recovery (if present):
• All the refrigerant gas;
• All the antifreeze solutions contained in the hydraulic circuit;
• Lubricant oil from the compressors.
Waiting the disposal unit could be storage also to outdoor if all the circuits (electrical, cooling and hydraulic) closed and undamaged.
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If the frame and devices are unusable must be demolish and divide them for the recycling; particularly attention on the copper and alumi-
nium.
All the materials must be recovered and disposed in accordance with the regulations and norms in force.
The refrigerant pressure in the cooling circuit can be high, discharge it with caution.
Recovery, reusing, recycle, rigeneration and disposal of refrigerant must be performed by authorized personnel,
expert and well equipped and informed, in accorance with the local regulaments.
