TRI-TECH MEDICAL ASM250-Kit Manual

Tri-Tech
Medical Inc.
Auto Change Over Manifold Alarm Kit ASM250-Kit
Optional Alarm Kits:
Can be wired to a "T2"
Series Master Alarm
Or
The TAV-1 Audio/Visual
Remote Alarm
Note: Use Oxygen compatible thread sealing tape for all pipe thread joints.
(Do not apply sealing tape to CGA thread joints)
Refer to the above piping diagram during assembly of the fittings.
The ATS Auto Change Over Manifold should be installed on the wall or suitable surface before
installing this alarm kit. If this kit is being added to an existing Change Over Manifold, remove the
pigtail, CGA check valve and NPT adaptor from the inlets of the manifold first. Be sure all gas pressure
is exhausted before removing fittings.

Installation Procedure:

Install the 1/4" NPT M x F bushing into one of the inlet ports on the lower end of the Auto Change
Manifold. Then install the street tee into the 1/4" NPT bushing.
Tighten snug with the port 90° to the inlet facing down as shown.
Install one of the pressure switches into the port of the street tee that is facing down and tighten snug.
Install the 1/4" male NPT x 1/2" female NPT adaptor and then the CGA check valve to the street tee port
180° from the Auto Change Over Manifold inlet as shown. Refer to the Auto Change Over Manifold
installation/ Operating Instruction manual 99-0562 for complete details.
Repeat the process for the opposite side of the manifold.
Refer to the diagram on pages 2 or 3 to complete the wiring to the alarm. When wired properly, this kit
will provide an open circuit to either style of alarm noted above whenever the pressure falls below 400
psi on either the right or left bank of cylinders to actuate an alarm signal.
e6937rB 05/21/21
Domestic e-mail:
Auto Change Over Manifold Alarm Kit
Optional Alarm Kit:
ASM 250-Kit
Tri-Tech Medical Inc., 35401 Avon Commerce Parkway, Avon, Ohio 44011
Tel.1-800-253-8692 or 440-937-6244 Fax. 440-937-5060
sales@tri-techmedical.com International e mail:
Web site address: www.tri-techmedical.com
Page 1 of 3
Installation of the ATS Series
internationalsales@tri-techmedical.com
No. 99-0563