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Model SR9 Automatic Switchover
General:
The Archer Instruments Model SR9 Automatic Switchover vacuum regulator
is designed for use in pairs, with one unit connected to an on-line gas cylinder / gas
source and the other connected to a standby cylinder / gas source. The SR9 can also be
used in the same way with multiple units connected to multiple standby gas sources.
Safety:
When working with chlorine, always use caution and follow applicable safety
procedures. General safety considerations:
* Store Chlorine separately from Ammonia.
* When using chlorine, avoid locations that expose the cylinder and equipment to direct
sunlight.
* Do not apply heater or heat source directly to chlorine cylinders.
* 150lb (upright) cylinders: Always keep cylinders upright and ensure the steel valve
cap is in place when moving cylinders. Once cylinder is in place, a safety chain should be
used to secure the cylinder.
* Ton Containers: Use appropriate handling equipment when moving ton containers.
When readying ton container for use, ensure valves are aligned vertically. The top valve
accesses gaseous chlorine and the bottom valve accesses liquid chlorine. The bottom
valve should never be touched unless your system employs a chlorine heat exchanger
(evaporator) designed expressly for use with liquid chlorine. When drawing gas from ton
containers an appropriate ton container adapter & drip leg must be used (also available
from Archer Instruments).
Archer Instruments, LLC
Installation, Operation & Maintenance
www.archerinstruments.com
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Table of Contents
Related Manuals for Archer SR9
Summary of Contents for Archer SR9
- Page 1 / gas source and the other connected to a standby cylinder / gas source. The SR9 can also be used in the same way with multiple units connected to multiple standby gas sources.
- Page 2 1) Carefully inspect the cylinder valve outlet surfaces and vacuum regulator inlet capsule surfaces for damage or debris prior to installation. 2) Note that the inlet port on the SR9 regulator ships with a filter cartridge installed. Do not remove this filter, as doing so will bring on maintenance requirements.
- Page 3 3) If the Model SR9 being placed into operation is meant to be the on-line unit (cylinder being used first), no further action is needed. 4) If the SR9 being placed into operation is meant to be the standby unit, turn the reset knob 2 to 2-1/4 turns counter clockwise to engage the automatic switchover detent.
- Page 4 It is recommended that all o-rings be replaced. Replacing the VRA-546 reset pin is only necessary if the SR9 will not remain in the standby position. This part has left-hand threads and must be fully screwed in until it bottoms out.
- Page 5 3/8” tubing for 100 PPD & below, ½” tubing for 250 Date: Nov 2016 PPD and 5/8” tubing for 500 PPD. Tap size is ¼” NPT for 100 Drawing Number: SR9 PPD & 250 PPD / ½” NPT for 500 PPD. Archer Instruments, LLC...
- Page 6 ¼-20 x 2-3/4” Yoke Screw Notes: Vacuum Tube Connector (not shown) supplied as follows: 5/8” tubing for 500 PPD. Tap size is ½” NPT for 500 PPD. Vent tube connector for 3/8” tubing. Date: July 2014 Drawing Number: SR9-500 Archer Instruments, LLC www.archerinstruments.com...
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