Profax RFG-320H - Manual

®
P.O. Box 898 • Pearland, TX 77588-0898
115 or 230 VOLT RFG-320H SERIES HEATED REGULATOR
INSTRUCTIONS
Before Installing, Operating or Servicing Read and Comply With These Instructions
00485OG102609
USER RESPONSIBILITY
This equipment will perform in conformity with the description thereof contained in this manual and accompanying labels and/or inser ts when installed,
operated maintained in accordance with the instructions provided. This equipment must be checked periodically. Defective equipment should not be used.
Parts that are broken, missing, plainly worn, distor ted or contaminated, should be replaced immediately.
This equipment or any of its parts should not be altered. The user of this equipment shall have the sole responsibility for any malfunction which results
from improper use, faulty maintenance, damage, improper repair or alteration by anyone other than PROFAX.
SAFETY
A. The regulator relief valve protects only the regulator and is not intended to protect any other equipment. Be sure the equipment with which it is used also
protected by relief device(s) is such equipment cannot fully withstand cylinder pressure.
B. Never use the Regulator for gases other than labeled. Regulators with Compressed Gas Associated (CGA) number 320, 326, and 580 are designed to
withstand 3000 PSIG maximum inlet pressure. Regulators with CGA 680 inlet are designed to withstand 5500 PSIG. Do not interchange inlet fittings or
parts between 3000 PSIG max regulators and 5500 PSIG max regulators. Use of fittings or par ts other than intended could result in a hazardous
condition.
C. All connections to the Regulator must be clean. Remove dirt or other foreign matter from the Regulator and metal connecting parts with a clean lint free
cloth. Clean all metal parts that came in contact with the gas stream to remove all traces of grease or oil.
CAUTION
D. Never pressurize a Regulator that has loose or damaged parts or is in questionable condition. Never loosen a connection or attempt to remove a par t until
gas pressure has been relieved. Under pressure, gas can dangerously propel a loose part.
E. Before transporting a cylinder that is not secured on a car t suitable for such transport, remove the Regulator and recap the cylinder.
F. Stand to one side of the cylinder valve or Regulator when opening valve.
I . INTRODUCTION
This manual provides installation, operation, and service information for the PROFAX style RFG-320H Heated Single-stage Regulator. The RFG-320H
regulators are flowgauge regulators. Their operating pressure gauge is read in cubic feet per hour (cfh). The RFG-320H series regulators are for use with
nonsiphon-type cylinders. The 115-volt Regulator has a 1.5 amp heating system. The 230-volt has a .75 amp heating system. Both regulators heating
system’s consist of a 175-watt heating cartridge and a thermostat to provide automatic temperature control. The heating system prevents flow reduction and
eliminates the problem of regulator freeze up which causes reduction or stoppage of gas flow or malfunction of the regulator.
(continued on back - turn page over please)
II . INSTALLATION
A. Observe the precautions listed in the SAFETY Section.
B. Before attaching the regulator, open the cylinder valve to blow out any foreign matter from the outlet and close it.
C. Connect the Regulator to the cylinder valve outlet, checking that the washer is in place on 320 CGA only. Tighten the connection nut with a proper size
wrench.
D. The 115-volt models are supplied with a short 3-wire cord and a molded grounded plug. No plug is provided on the 230-volt models, due to the diversity
of 230v. plugs.
CAUTION
To guard against potential shock and fire hazard: use a three-wire, grounded, extension cord (available from your distributor or local supplier); and
protect the circuit with a suitable fuse or circuit breaker (heaters draw total 1.5 amp for the 115-volt models and .75 amp for the 230-volt models).
Never remove ground prong from line cord plug.
E. Plug the Regulator line (or extension) cord into a grounded receptacle. The heaters draw a total load of 175 watts.
F. Connect downstream equipment hose to the adaptor. Slightly open equipment valve. Slowly open cylinder valve and purge line to discharge contaminates.
Close equipment valve seconds after pure gas starts to flow from equipment. Open cylinder valve fully and the required gas flow is ready for use.
G. Close the cylinder valve and remove line cord from the supply receptacle whenever the regulator is not in use.
H. Test all connections for leaks by applying a leak detection solution.
III . OPERATION
TO ADJUST FLOW RATE OR PRESSURE
A. With gas flowing at down stream end, slowly turn Regulator adjusting screw clockwise until desired flow or pressure is shown on operating gauge.
B. To reduce flow rate or pressure, turn adjusting screw counterclockwise while allowing gas to flow from downstream valve.
3.1
TO SHUT DOWN
A. Close cylinder valve.
B. Open downstream valve to drain lines.
C. Close downstream valve and remove line cord. 3.2