Machine Charging Procedure - MAXA i-290 0106 Installer Manual

There are 5 temperature sensor inside the machine: the return and delivery probes on the water side (position B, C) and those on the compres-
sor suction and discharge (position D, E) are located in dedicated wells, while the external air probe (position F) is located on a dedicated support.
The probes on the compressor pipes are fixed by clips to the respective thermowells.
C
5.9 MACHINE CHARGING PROCEDURE
The unit is supplied already charged with refrigerant gas. If it is necessary to recharge it, after a maintenance operation or after a leak, follow
the step listed below in this exact order:
• Before proceeding with any work, carry out a risk analysis and demarcate the work area. Ensure that no possible source of ignition is prese
in it. The minimum space should be 3 m around the unit and must not include manholes, drains or other depressions where refrigerant gas
could be deposited;
• dispaly warning signs and prevent access by unauthorised personnel;
• use the PPE indicated in this manual and the appropriate personal equipment for the intervention. This equipment includes:
1. Explosimeter, to check for the presence of hydrocarbons in the environment (to be used before and while working on the system).
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A
B
i-290
Inverter air/water heat pumps with axial fans
D
F
E