Watts AMES 2000SS Series Operating instructions

RP/IS-A-2000SS/3000SS
2000SS-OSY-TS FxG
Integrated supervisory tamper switches on
gate valves add protection against fire
NOTICE
For Australia and New Zealand, line strainers should be installed
between the upstream shutoff valve and the inlet of the backflow
preventer.
NOTICE
The flange gasket bolts for the gate valves should be retightened
during installation as the bolts may have loosened due to storage
and shipping.
Testing
For field testing procedure, refer to Ames installation sheets
IS-A-ATG-1 found at watts.com.
For other repair kits and service parts, refer to the Backflow
Prevention Products Repair Kits & Service Parts price list
PL-A-RP-BPD found at watts.com.
For technical assistance, contact your local Ames representative.
WARNING
!
Read this Manual BEFORE using this equipment.
Failure to read and follow all safety and use information can
result in death, serious personal injury, property damage, or
damage to the equipment.
Keep this Manual for future reference.
You are required to consult the local building and plumbing
codes prior to installation. If the information in this manual
is not consistent with local building or plumbing codes,
the local codes should be followed. Inquire with governing
authorities for additional local requirements.
WARNING
!
Need for Periodic Inspection/Maintenance: This product must
be tested periodically in compliance with local codes, but at least
once per year or more as service conditions warrant. If installed on
a fire suppression system, all mechanical checks, such as alarms
and backflow preventers, should be flow tested and inspected in
accordance with NFPA 13 and/or NFPA 25. All products must be
retested once maintenance has been performed. Corrosive water
conditions, and/or unauthorized adjustments or repair could render
the product ineffective for the service intended. Regular checking
and cleaning of the product’s internal components helps assure
maximum life and proper product function.
WARNING
!
Installation, Maintenance, and Repair Manual
Series 2000SS, 3000SS
Double Check Valve Assemblies
Double Check Detector Assemblies
Sizes: 2½" – 12"
Product information is subject to change without notice and
supersedes all previous publications.

2
Outdoor Installation
• Before installing an assembly, flush the line thoroughly to
remove all debris, chips, and other foreign objects. Failure to
do so may make the assembly inoperable.
• Series 2000SS and 3000SS backflow preventers are approved
by ASSE (American Society of Sanitation Engineers) to be
installed in horizontal or vertical positions as long as the flow
indicator arrow in the assembly is pointed in the direction of
water flow. Local water authorities must approve all installation
configurations.
• Allow sufficient clearance around the installed assembly to
conduct testing, servicing, and inspection. Allow a minimum of
12" from the flood level to the bottom of the assembly.
• If the double check valve or double check detector assembly is
installed in a vault or pit, be sure proper drainage is available.
If sufficient drainage is not available a cross-connection may
occur.
• If installing on a protection system, be sure to purge air from
the fire system. Fill the system slowly with all inspectors test
valves open.
• The control valves on the OSY-TS model have integrated
supervisory tamper switches that require connection to a fire
alarm control panel.
Installation Guidelines
Indoor Installation
Vertical Installation ASSE
Wiring the Tamper Switch
The supervisory tamper switch consists of two SPDT switches,
and is designed to send a signal when the valve is closed and
when the switch is removed from the valve. In the neutral posi-
tion, the switch indicates the valve is fully open. Closing the valve
causes the switch rod to come out of the valve stem groove,
activating the switch. Removing the device also activates the
switch.
Use the schematic diagram and the wiring notes for proper
wiring of the tamper switch to the fire alarm control panel. (For
more information refer to Tamper Switch Wiring Instructions at
watts.com.)
CAUTION
!
Before wiring supervisory switches in fire protection systems,
refer to the following standards:
NFPA 13: Standard for the Installation of Sprinkler Systems
NFPA 25: Inspection, Testing, Maintenance of Water-based Fire
Protection Systems
NFPA 70: National Electrical Code
NFPA 72: National Fire Alarm Code
CSA C22.1 NO.1 Canadian Electrical Code, Part 1, Safety
Standard for Electrical Installations Section 32
CAN/ULC-S524, Standard for Installation of Fire Alarm Systems
Wiring Notes
• Connection to power limited circuitry is required.
• The auxiliary switch is for supplemental use only and shall not
be used for fire alarm signaling applications.
• Switch functions are checked at the factory. Checking the
switch after field installation is strongly advised. Check conti-
nuity with the valve fully open. Switch functions activate within
two (2) turns from open.
WARNING
!
Metallic conduit required by NEC for proper grounding conduit
joint must be sealed with a conductive sealant.
Install switch in accordance with National Electrical Code and/or
local ordinances.
Wiring methods shall be in accordance with CSA C22.1,
Canadian Electrical Code, Part 1, Safety Standard for Electrical
Installations, Section 32 and CAN/ULC-S524, Standard for
Installation of Fire Alarm Systems Assure All Devices Are Properly
Grounded.

3
WARNING
!Depressurize valve before servicing.
Removing Cam-Checks
1. Shut down the water system and lock out the system, if pos-
sible. Slowly open all ball valves to relieve air and water pres-
sure. Loosen bolts on the groove coupler and remove the
groove coupler and cover plate from the body.
2. For check No. 1, using a 9/16" socket wrench or nut driver,
remove the four nuts from the No. 1 check studs. (See
Figures 1 and 2.) Using two hands, placing them at 12
o’clock and 6 o’clock, wiggle the cam-check assembly free.
Remove the assembly through the access port with the back
of the clapper first, spring end down. Pull the assembly out
of the main body.
3. For check No. 2, after loosening bolts with a 9/16" socket,
remove the bolts completely. (See Figure 3.) Using the cen-
terline access bar, spin the cam-check assembly from the 9
o’clock position to the 12 o’clock position. Then (without let-
ting go of the access bar) push the assembly slightly down-
stream so that the clapper is parallel with the valve body.
Now bring the assembly through the check retaining wall.
Leave the assembly clapper parallel with the valve body. Pull
the assembly through the access port.
4. Place a 3/8" nut driver or a piece of small diameter pipe
on the cam arm torsion spring and move it away from and
around the torsion spring retaining bracket so as to relieve
the torsion spring tension. (See Figure 4.) This allows the cam
arm to move freely, enabling inspection of the clapper face
and cam seat. Thoroughly clean the seat area and clapper
sealing surfaces, cam arms, and O-rings for damage, nicks,
and debris. If any parts are damaged, install a new check
assembly O-ring, or washer, shutoff disc.
5. Reassembly reverse of disassembly, carefully tightening the
torsion spring, installing the checks, and tightening the studs.
6. Before reinstalling the check assembly, thoroughly clean the
O-ring groove and apply an FDA-approved lubricant to the
O-ring.
Maintenance Instructions
No. 1 Cam-Check
No. 2 Cam-Check DC Cam arm torsion spring
Figure 4
Figure 3
Figure 2
Figure 1
15
2
3
4
6
Check Studs
8
7
Flow
9
Item Description
1 No. 1 Cam-Check
2 No. 2 Cam-Check
3 No. 1 Cam-Check O-ring
4 No. 2 Cam-Check O-ring
5 Ball Valve
6 Cover Plate
7 Groove Coupler
8 Washer, shutoff disc
9 Groove Coupler Gasket
For repair kits and parts, refer to the Backflow Prevention
Products Repair Kits & Service Parts price list
PL-A-RP-BPD found at watts.com.

Test Check Valve No. 1
1. Ensure shutoff No. 1 is open and shutoff No. 2 is closed.
2. Connect the high side hose to test cock No. 3, and the low side to test
cock No. 2, and open both test cock No. 2 and test cock No. 3.
3. Open valve C, then open A to bleed air from the high side. Close valve
A, then open B to bleed low side. Close valve B.
4. Connect the vent hose loosely to test cock No. 1. Open valve A to vent
air from the vent hose. Tighten the vent hose at test cock No. 1, and
open test cock No. 1.
5. Close shutoff No. 1. Slowly loosen the hose at test cock No. 2 until the
differential gauge rises to 2psi then retighten the hose. If the differential
reading does not decrease, record the check valves as "tight."
Test Check Valve No. 2
1. Move the high side hose to test cock No. 4, the low side to test cock
No. 3, and open both test cock No. 3 and test cock No. 4. Remove
the vent hose from test cock No. 1, and open shutoff No. 1.
2. Open valve C, then open valve A to bleed air from the high side. Close
valve A, then open valve B to bleed the low side. Close valve B.
3. Connect the vent hose loosely to test cock No. 1. Open valve A to vent
air from the vent hose. Tighten the vent hose at test cock No. 1, and
open test cock No. 1.
4. Close shutoff No. 1, then slowly loosen the hose at test cock No. 3
until the differential gauge rises to 2psi and retighten the hose. If the dif-
ferential reading does not decrease, record the check as tight. Remove
all the hoses and restore the valve to original working condition.
NOTICE
The assembly will fail both the first and second check valve tests
above, if shutoff No. 2 leaks excessively. To test for a leaky No. 2
shutoff, use the following procedure.
Test for Leaky No. 2 Shutoff
1. Connect the high side to test cock No. 1, and the low side to test cock
No. 4. Open test cock No. 1 and test cock No. 4. Close shutoffs No. 1
and No. 2.
2. Close valve C. Open valve A, next open valve B 1⁄2 turn, then loosen
the hose at test cock No. 4 to remove air. Retighten the hose.
3. If the differential gauge rises above 0 (zero), there is excessive leakage
at shutoff No. 2. The shutoff must be replaced to test the assembly.
Testing Double Check Valve Assembly
Ball Type Test Valves
(A) (C)
(B)
Needle
Valve
High Hose
(Yellow)
Low Hose
(White or Red)
Vent Hose
(Blue)
Test Cock
No. 1
Test Cock
No. 2
Test Cock
No. 3 Test Cock
No. 4
Limited Warranty: Ames Fire & Waterworks (the “Company”) warrants each product to be free from defects in material and workmanship under normal usage for a period of one year from the date
of original shipment. In the event of such defects within the warranty period, the Company will, at its option, replace or recondition the product without charge.
THE WARRANTY SET FORTH HEREIN IS GIVEN EXPRESSLY AND IS THE ONLY WARRANTY GIVEN BY THE COMPANY WITH RESPECT TO THE PRODUCT. THE COMPANY MAKES NO OTHER
WARRANTIES, EXPRESS OR IMPLIED. THE COMPANY HEREBY SPECIFICALLY DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
The remedy described in the first paragraph of this warranty shall constitute the sole and exclusive remedy for breach of warranty, and the Company shall not be responsible for any incidental, special
or consequential damages, including without limitation, lost profits or the cost of repairing or replacing other property which is damaged if this product does not work properly, other costs resulting from
labor charges, delays, vandalism, negligence, fouling caused by foreign material, damage from adverse water conditions, chemical, or any other circumstances over which the Company has no control.
This warranty shall be invalidated by any abuse, misuse, misapplication, improper installation or improper maintenance or alteration of the product.
Some States do not allow limitations on how long an implied warranty lasts, and some States do not allow the exclusion or limitation of incidental or consequential damages. Therefore the
above limitations may not apply to you. This Limited Warranty gives you specific legal rights, and you may have other rights that vary from State to State. You should consult applicable state laws to
determine your rights. SO FAR AS IS CONSISTENT WITH APPLICABLE STATE LAW, ANY IMPLIED WARRANTIES THAT MAY NOT BE DISCLAIMED, INCLUDING THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO ONE YEAR FROM THE DATE OF ORIGINAL SHIPMENT.
RP/IS-A-2000SS/3000SS 2218 EDP#7016812 © 2022 Watts
USA: Backflow T: [phone] • F: [phone] • AmesFireWater.com
USA: Control Valves T: [phone] • F: [phone] • AmesFireWater.com
Canada: T: [phone] • F: [phone] • AmesFireWater.ca
Latin America: T: (52) 55-4122-0138 • AmesFireWater.com