EN
OEM Manual – CUBO
2
AQUA
Pag. 24-EN
UMT/WG T MT Rev3.0 – 08/10/2021
24
the pressure monitored installing a
pressure gauge in the liquid service port
5.
Shut off the sealed ball valve
99
6.
Remove the installed safety valve
145
and
replace with new one (apply PTFE - Teflon
tape on the valve thread)
7.
Open the ball valve 99
and
be sure to
re-apply a new metal seal while the
valve is in “open” position
8.
Check for leaks on the safety valve with
soapy water
9.
Reinstall the panels
10.
Switch on the main isolator and restart
the unit and refrigerators
Option 2
(available on-demand as spare part.
Only for unit with 8L receiver): 2 pressure relief
valves connected via a 3-way changeover valve
With this option, the replacement procedure will
be quicker.
1.
Close the evaporator valves and wait the
compressor switches OFF by pump down
2.
Turn off the unit via the keypad and main
isolator when the unit stops
3.
Remove the top panel and frontal panel
(with the GC fan) to easily access to the
receiver compartment
4.
Through the changeover valve disconnect
the PRV valve you need to replace
5.
Replace the PRV valve with new one
(apply Teflon tape on the valve thread)
6.
Through the changeover valve connect
again the PRV valve has been replaced
7.
Check for leaks on the safety valve with
soapy water
8.
Reinstall the panels
9.
Switch on the main isolator
10.
Restart the unit and refrigerators
Unit operation
The operation of the unit should be checked to
detect faults in the controller, valves or sensors.
Consult alarm logs
Check operation of HP & MP valves
Check calibration of temperature probes and
pressure transducers
Check alarm logs for present and past alarms
investigate and correct as necessary
General overview
Содержание CUBO2 AQUA
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