50
18.01._5280107_02
NRL 0280-0750 °-L / A-E
EN
- Connect the necessary instruments,
• Pressure gauges connected through appropriate extensions to the
compressor inlet and outlet pressure plugs;
• Thermometers connected to thermocouple probes that are fixed
to the compressor inlet and outlet pipes. Avoid using metratast that
require the operator to near the machine cooling circuit;
- Access the machines
and acquire the measurements, keeping AWAY
from the under pressure parts of the cooling circuit;
- As soon as the measurements are taken, turn off the machine, remove
the instruments and close the cooling circuit compartment.
The high/low pressure switch, where present must be tested with the ma-
chine “closed”, reading the high pressure circuit pressure on the machine
control panel.
In case of machines with the cooling circuit compartment not closed by
framework, the high/low pressure switch must be tested by standing in
front of the machine panel where the control panel is located, remaining
distant and not exposed to the under pressure parts of the cooling circuit.
