INTRODUCTION
Western manifold systems are cleaned, tested and prepared for the indicated gas service and are built follow-
ing National Fire Protection Association and Compressed Gas Association guidelines. The manifold is specifi-
cally designed to regulate and monitor vaporized gas from liquid cylinders with contents pressures between
125 - 250 psig and to provide an uninterrupted supply of gas for the specific gas application. The control is de-
signed and built with features providing automatic changeover from the depleted “Service” supply bank to the
“Secondary” supply with no loss or drop in delivery pressure. Pressure gauges, alarm signal connections and
lights show system status and alert the need to replace depleted cylinders. An economizer control valve is con-
tained within the cabinet to utilize accumulated pressure from the "Secondary" bank preventing the exhausting
of useful product into the atmosphere. Features of the automatic systems include an integral adjustable line
regulator, 72" cryogenic flexible pigtails with check valves and complete mounting hardware.
WARRANTY
All Western manifolds are warranted against defects in materials and workmanship for the period of one year
from date of purchase. See back cover for details of limited warranty.
B20105 0012 ECN-11129
Installation and Operating Instructions For
AUTOMATIC CHANGEOVER MANIFOLD
LC and LCHP SERIES
CAUTION
Failure to follow the following instructions can result in personal injury or property damage:
•
Never permit oil, grease, or other combustible materials to come in contact with cylinders, manifold, and
connections.Oil and grease mayreactand ignite whenin contactwith somegases — particularly oxygen andnitrous
oxide.
•
Cylindervalves should always be openedvery s-l-o-w-l-y.Heat ofrecompressionmayignite combustiblematerials.
•
Pigtails should never be kinked, twisted, or bent into a radius smaller than 5 inches. Mistreatment may cause the
pigtail to burst.
•
Do not apply heat. Some materials may react and ignite when in contact with some gases — particularly oxygen
and nitrous oxide.
•
Cylinders should always be secured with racks, chains, or straps. Unrestrained cylinders may fall over and damage
or break off the cylinder valve which may propel the cylinder with great force.
•
Carefully read and follow installation and mounting instructions! Manifolds are designed for gas withdrawal from
cryogenic liquids. Contact of a cryogenic liquid or cold gas with skin or eyes may cause a freezing injury.
•
Oxygen manifolds and cylinders should be grounded. Static discharges and lightning strikes may ignite materials
in an oxygen atmosphere, creating a fire or explosive force.
•
Welding should not be performed near nitrous oxide piping. Excessiveheat maycause the gas to dissociate,creating
an explosive force.
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