Manual code 75803707A.0708
Page 33 of 64
9
Check that support brackets are installed on the discharge pipe every 3 m
and are not too tight so as to allow expansion of the pipe.
10
Check that the refrigerant circuit valves are open, including the valve on
the hot gas injection pipe.
11
Check the electrical connections to the condenser disconnect switch.
12
Check that the disconnect switch is in the closed position (condenser
powered on).
13
Check the refrigerant pipe connections between the condenser and the
evaporator are in the opposite direction to the air flow and the refrigerant
flow.
14
Check that the condenser is positioned correctly to prevent air recirculation
that would otherwise impair performance.
15
Check the charge level in the refrigerant circuit.
16
Check the evaporation pressure.
17
Check the condensation pressure.
18
Check the superheating of the refrigerant aspirated by the compressor.
19
Check the subcooling of the liquid refrigerant.
20
Check that the liquid line filter is not clogged.
21
Check the power consumption of the compressor.
22
Check operation of the high pressure control switch.
23
Check operation of the low pressure control switch.
24
Check the compressor operating temperature.
WATER CIRCUIT CHECKS
DESCRIPTION POSITIVE NEGATIVE
25
Check that the inlet and outlet of the hot and cold water supplies conform
with the arrows marked on the fittings or, if these are missing, with the
drawings in the installation manual for the machine.
26
Check that all the liquid supply pipes are provided with manual shut-off
cocks just outside to the machine, and that theses cocks are open.
27
Check that the condensate drain outlet does not have taps or sections
with upward gradients.
28
Check that the hardness of the water supply is between 10 and 40
French degrees.
29
Check that the humidifier supply fitting is connected to the mains drinking
water supply and that it is provided with a manual shut-off valve just
outside the machine.
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