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PROCOM 2 or CYCLIC 2020 regulation - SEC 7HC air treatment type
Repeat this operation for the other part.
9.4.3
Checking the pressure regulator of the pressure release line
Setting pressure: 9.5 bar.
Create a leak downstream the pressure reducing valve and check the stability of it
9.5 Mechanical back-up service
Ask the cognizant authority whether this test is required or not, according
to the activity and architecture of the facilities concerned. This action will
trigger an alarm.
One or two mechanical standby pressure switch(es) are mounted in parallel with sensor
C1A on the PROCOM-2 or CYCLIC 2020.
set the X master switch to "O".
remove the PROCOM-2 or CYCLIC 2020 power supply terminal box to cut the
.
power supply
set the master switch back to its initial position.
reduce the pressure. Compressor A will start running at ~ 7 bar (11 bar
version) / 8 bar (15 bar version). Continue to drop the pressure if a second
compressor is present. Compressor B will start running at ~ 6.5 bar (11 bar
version) / 7.5 bar (15 bar version).
You can stop the leakage to check the compressors stop by the pressure
build-up. Compressor B (if present) will stop at around 8.5 bar (11 bar
version) / 9.5 bar (15 bar version). Then compressor A will stop at around 9
bar (11 bar version) / 10 bar (15 bar version).
After performing this check, set the X master switch to "O", put the PROCOM-2 or
CYCLIC 2020 power supply back into place and reset the master switch to "I".
9.6 Discharge system
When the compressor rotates, make sure that the compressor discharge system
operates when pressure reaches 11 bar (11 bar version) / 15 bar (15 bar version) or
when an order is given to the compressor to stop, the compressor discharge system is
activated.
Check the compressor discharge time before it stops completely (10 to 15 seconds).
9.7 Network alarm
Ask the cognizant authority whether this test is required or not, according
to the activity and architecture of the facilities concerned. This action will
trigger an alarm.
Each network alarm is fitted with an exhaust sliding valve.
519015-15
HOSPITAIR CABIN (MV) – 11 & 15 bar
To test the alarm, take the sliding part away from the nut part of the valve: a leak is
created at sensor level; the alarm is triggered. Upon completion of the test, put the
sliding valve back in normal position.
normal position
network alarm test position (intermediate)
Alarm report:
The connection between Alarm report on automate units must be done by the person
in charge of the Installation.
He must control the compliance wiring and proper operation during the final
acceptance test.
9.8 Safety relief valve
When a relief valve with discharge line operates and must be tested, no persons may
stand in front of the valve discharge direction. Not allow discharge toxic, explosive or
flammable products, into the atmosphere.
Before the test, a controlled discharge procedure in a confined volume is requested.
Never tamper with the valve, nor remove the lead/manufacturer's seal, nor modify its
adjustment pressure for any reason.
Not create cold or hot thermal shock on the relief valve.
Make sure that the lead/manufacturer's seal is never damaged.
Maintain the valve clean and in functioning order. Check in particular that the exhaust
remains free and that no foreign body blocks the evacuation piping.
To make sure that the safety valves continue to operate in good working condition,
these must be periodically tested.
To do this, open the valve manually using the lever or the test knob; this test must be
done while keeping the protected appliance at a pressure between 80 and 90% of the
valve calibration pressure. The valve must open cleanly, and release an abundant
amount of fluid, and must then close fully once the lever has been released or the knob
tightened.
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