Firepower MST 220i, Operating Manual

Page: 36 / 96

FIREPOWER MST 220i
INSTALLATION/SETUP 3-6 Manual 0-5343
NOTE
Regulators purchased with open 1/8”, 1/4”, 3/8”, or 1/2” NPT ports must be assembled to their intended
system.
1. Note the maximum inlet pressure stamped on the regulator. DO NOT attach the regulator to a system that
has a higher pressure than the maximum rated pressure stamped on the regulator.
2. The regulator body will be stamped “IN” or “HP” at the inlet port. Attach the inlet port to the system supply
pressure connection.
3. Wrap pipe threads with Teflon tape 1 1/2 to 2 turns to effect a seal. If other sealants are used, they must
be compatible with the gas that will be used in the system.
4. If gauges are to be attached to the regulator and the regu lator is stamped and listed by a third party (i.e.
“UL” or “ETL”). The following requirements must be met:
a) Inlet gauges over 1000 PSIG (6.87 mPa) shall conform with the requirements of UL 404, “Indicating
Pressure Gauges for Compressed Gas Service.”
b) Low pressure gauges must be UL recognized for the class of regulator they are being used on accord-
ing to UL252A.
!
WARNING
DO NOT use a regulator that delivers pressure exceeding the pressure rating of the downstream equip-
ment unless pro visions are made to prevent over-pressurization (i.e. system relief valve). Make sure
the pressure rating of the down stream equipment is compatible with the maximum delivery pressure
of the regulator.
5. Be sure that the regulator has the correct pressure rating and gas service for the cylinder used.
6. Carefully inspect the regulator for damaged threads, dirt, dust, grease, oil, or other flammable substances.
Remove dust and dirt with a clean cloth. Be sure the inlet swivel filter is clean and in place. Attach the
regulator (Figure 3-4) to the cylinder valve. Tighten securely with a wrench.
!
WARNING
DO NOT attach or use the regulator if oil, grease, flamma ble substances or damage is present! Have a
qualified repair technician clean the regulator or repair any damage.
Art # A-12436
Figure 3-4: Regulator to Cylinder Valve