Riello NXHP Series Installation, Operation And Maintenance Instructions page 11

1 - INTRODUCTION
7. Periodic leak tests have to be carried out by the customer or by third parties. The EU
regulation set the periodicity here after:
System WITHOUT
leakage detection
System WITH leakage
detection
Refrigerant charge/
circuit (CO equivalent)
2
R134A
(GWP 1430)
R407C
(GWP 1774)
R410A
(GWP 2088)
R-290
(1) From 01/01/2017, units must be equipped with a leakage detection system
8. A logbook must be established for
equipments subject to periodic leak tests.
It should contain the quantity and the type
of fluid present within the installation
(added and recovered), the quantity of
recycled fluid, regenerated or destroyed,
the date and output of the leak test, the
designation of the operator and its
belonging company, etc.
9. Contact your local dealer or installer if you
have any questions.
Protection device checks:
■ If no national regulations exist, check the
protection devices : once a year for high-
pressure switches, every five years for
external relief valves.
NOTE: The following statements are only
indicated if a pressure switch is available on
the unit.
The company or organisation that conducts a
pressure switch test shall establish and implement
a detailed procedure to fix:
■ Safety measures
■ Measuring equipment calibration
■ Validating operation of protective devices
■ Test protocols
■ Recommissioning of the equipment.
No Check 12 Months
No Check 24 Months
5 ≤ Charge < 50
< 5 Tons
3,5 ≤ Charge <
Charge < 3,5 kg
2,8 ≤ Charge <
Charge < 2,8 kg
2,4 ≤ Charge <
Charge < 2,4 kg
6 Months
12 Months
50 ≤ Charge <
Tons 500 Tons
34,9 ≤ Charge <
34,9 kg 349,7 kg
28,2 ≤ Charge <
28,2 kg 281,9 kg
23,9 ≤ Charge <
23,9 kg 239,5 kg
No requirement
Consult Service for this type of test. The
manufacturer mentions here only the principle of
a test without removing the pressure switch:
■ The pressure switch test must always be
carried out with all the panels closed.
■ Verify and record the setpoints of pressure
switches and relief devices (valves and possible
rupture discs)
■ Be ready to switch-off the main disconnect switch
(on the unit or on the installation) of the power
supply if the pressure switch does not trigger
(avoid over-pressure)
■ Connect a calibrated pressure gauge (with
Schrader female port of 5/16 UNF) when
necessary.
CAUTION:
Inspect the protection devices such as valves.
If the machine operates in a corrosive
environment, inspect the protection devices
more frequently.
C h e c k r e g u l a r l y f o r l e a k s a n d r e p a i r
immediately. Ensure regularly that the
vibration levels remain acceptable and close
to those at the initial unit start-up.
3 Months
6 Months
Charge >
500 Tons
(1)
Charge > 349,7
kg
Charge >
281,9 kg
Charge > 239,5
kg
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