Firepower MST 140i, Operating Manual

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Firepower MST 140i
INSTALLATION, OPERATION AND SETUP 3-6 Manual 0-5338
3.07 Leak Testing the System
Leak test the system before putting into operation.
1. Be sure that there is a valve in the downstream
equipment to turn off the gas flow.
2. With the cylinder valve open, adjust the Flowmeter/
regulator to deliver the maximum required delivery
pressure.
3. Close the cylinder valve.
4. Turn the adjusting screw/knob counterclockwise one
turn.
a) If the high-pressure gauge reading drops, there
is a leak in the cylinder valve, inlet fitting, or high-
pressure gauge.
b) If the low-pressure gauge drops, there is a leak
in the down stream equipment, hose, hose fitting,
outlet fitting or low-pressure gauge. Check for
leaks using an approved leak detector solution.
c) If the high-pressure gauge drops and the low-
pressure gauge increases at the same time, there
is a leak in the flowmeter/ regulator seat.
d) If the flowmeter/ regulator requires service or
repair, take it to a qualified repair technician.
5. Once leak testing has been performed and there are
no leaks in the system, slowly open the cylinder valve
and proceed.
!
WARNING
If a leak has been detected anywhere in the
system, dis continue use and have the system
repaired. DO NOT use leaking equipment. Do
not attempt to repair a leaking system while the
system is under pressure.
3.08 When You Finish Using the Flowmeter/
Regulator
1. Close the cylinder valve.
2. Open the valve on the downstream equipment. This
drains all pressure from the system.
3. Close the valve on the downstream equipment.
4. Turn the adjusting screw counterclockwise to release
the ten sion on the adjusting spring.
5. Check the gauges after a few minutes for verification
that the cylinder valve is closed completely.
3.09 Storage of the Flowmeter/ Regulator
When the regulator is not in use and has been removed from
the cylinder, it should be stored in an area where it will be
pro tected from dust, oil, and grease. The inlet and outlet
should be capped to protect against internal contamination
and prevent insects from nesting.