12
If the switchover system seems to be using gas from the primary
and
reserve cylinders (pressure is
de creas ing on both inlet gauges at the same time), do the following:
1. Make sure the priority valve knob is turned fully to the right or left.
2. Observe the inlet pressure. It may be necessary to do this during the heaviest use of the system.
If the inlet pressure is below the values listed below, replace the high-pressure cylinders. If liquid
cylinders are used and the inlet pressure increases signifi cantly when the system is not in use,
then the system is over-withdrawing the liquid cyl in ders. Additional capacity may be added to the
system to prevent this.
526 2XXX
95 PSIG
526 3XXX
135 PSIG
526 4XXX
235 PSIG
526 5XXX
545 PSIG
526 7XXX
185 PSIG
3. If the above does not fi x the problem, please contact a CONCOA customer service personnel.
Please be prepared to give the following:
Model number
Gas service
Inlet pressure and type of gas supply
Outlet pressure
Approximate gas usage
SERVICE
A unit that is not functioning properly should not be used. It is recommended that all servicing be done by a
service facility authorized by CONCOA. Contact CONCOA Customer Service in Virginia Beach, Virginia for
systems still cov ered by the warranty. For items not covered by the warranty, contact the nearest CONCOA
District Sales Offi ce for as sis tance.
If so advised, the unit should be sent to a service facility authorized by CONCOA. Do the following before
ship ping:
1. Adequately package the system. If possible package in the original shipping container.
2. Ship prepaid.
3. Include a statement of the observed defi ciency.
4. Indicate the gas service that the equipment was used on.
5. Purge all equipment before shipment to protect the transporter and service personnel. The purging
is es pe cial ly important if the equipment has been in hazardous or corrosive gas service.
Return trip transportation charges are to be paid by the Buyer. In all cases where the warranty has expired,
repairs will be made at current list price for the replacement part(s), plus a reasonable labor charge.