Installation, Maintenance, & Repair
™
Colt
Double Check Valve Assemblies
Double Check Detector Assemblies
Sizes: 21⁄2" – 10" (65 – 250mm)
Series C200, C300
RP/IS-A-C200/C300
C200 OSY
!
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.
Local building or plumbing codes may require modifications to
the information provided. You are required to consult the local
building and plumbing codes prior to installation. If this information is not consistent with local building or plumbing codes, the
local codes should be followed.
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.
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.
Testing
For field testing procedure, refer to Ames installation sheets
IS-A-ATG-1 found on www.amesfirewater.com.
For other repair kits and service parts, refer to our Backflow
Prevention Products Repair Kits & Service Parts price list
PL-A-RP-BPD found on www.amesfirewater.com.
For technical assistance, contact your local Ames representative.
NOTICE
Inquire with governing authorities for local installation
requirements
NOTICE
For Australia and New Zealand, line strainers should be
installed between the upstream shutoff valve and the inlet of
the backflow preventer.
It’s important that this device 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
sprinkler system, all mechanical checks, such as alarm checks
and backflow preventers, should be flow tested and inspected
internally in accordance with NFPA 13 and NFPA 25.
NOTICE
Due to shipping, storage, and general handling, the Victaulic
Coupling for the shutoff valves may have loosened and should
be retightened during installation.
WARNING: This product contains chemicals known to the
State of California to cause cancer and birth defects or
other reproductive harm.
For more information: www.watts.com/prop65
www.amesfirewater.com
A Division of Watts Water Technologies, Inc.
Basic Installation Instructions
Guidelines
Most field problems occur because dirt and debris present in the system at the time
of installation becomes trapped in the check valves. The system should be flushed
before the valve is installed. If the system is not flushed until after the valve is
installed, remove both check modules from the valve and open the inlet shutoff to
allow water to flow for a sufficient time to flush debris from the water line. If debris
in the water system continues to cause fouling, a strainer can be installed upstream
of the backflow assembly.
The Series C200 and C300 may be installed in either horizontal or vertical position
as long as the backflow assembly is installed in accordance with the direction of the
flow arrow on the assembly and the local water authority approves the installation.
The assembly should be installed with adequate clearance around the valve to allow
for inspection, testing and servicing. 12" (300mm) should be the minimum clearance
between the lower portion of the assembly and the floor or grade.
NOTICE
Assembly body should not be painted.
Horizontal Installation
Maintenance Instructions 21/2" – 6" (65 – 150mm)
Vertical Installation
Figure A
Figure D
Figure B
Figure E
Instructions
!
WARNING
Prior to servicing any Ames valve, it is mandatory to shut down
the water system by closing both the inlet and outlet shutoff
valves. After shutoff valves are closed, open test cock #2, #3 &
#4 to relieve pressure within the backflow assembly.
1. After #3 test cock has been opened to relieve pressure,
remove #3 test cock from housing. (Figure A)
2. Insert a #3 screwdriver through the hole on the top of the
cover sleeve and using both hands rotate the cover sleeve
approximately
wise to break the sleeve O-ring seals. Using the screwdriver,
slowly slide the cover sleeve to the downstream side of the
housing. (Figure B)
3. Remove the stainless steel check retainer from the housing.
(Figure B)
4. Remove the #1 check module (Figure C) by inserting two flat
blade screwdrivers into the slots on either side of the check
module and gently pry the check module toward the
open zone.
1
/4-turn clockwise and 1/4-turn counter-clock-
Figure C
Figure F
5. Remove #2 check module with the same instructions as in
#4 above. For servicing 6" (150mm) checks see 8" – 10"
(200 – 250mm) instructions on p.3.
6. To clean or inspect either check module, insert a #3 screwdriver through the downstream side of the check module
as shown in Figure D & E. When the screwdriver is in place,
remove the “E”-clip (Figure F) and pin connecting the structural
members and the check clapper will open with no tension.
7. Thoroughly clean the seating area. The sealing disc may be
removed, if necessary, by removing the screws connecting
the keeper plate to the clapper. The sealing disc may be
reversed and reinstalled if the elastomer is cut or damaged.
8. Wash check module and O-ring and inspect for any damage. If damaged, reinstall new parts.
9. After thorough cleaning, lubricate O-ring w/FDA approved
lubricant, replace pin and “E”-clip in structural members,
remove screw driver and reinstall check modules and assemble housing in reverse order of these instructions.
2
Maintenance Instructions 8" – 10" (200 – 250mm)
Material/Tool Requirements:
• #4Phillipsscrewdriveror3/8" diameter rod, length sufficient
to span diameter of check, see Figures A and B.
1
•
/2 – 13" x 5" fully threaded hex bolt (Service bolt).
3
•
/4" open end or socket wrench.
Instructions:
!
WARNING
Prior to servicing any Ames valve, it is
mandatory to shut down the water system by closing both the inlet and outlet shutoff
valves. After shutoff valves are closed, open test
cock #2, #3 & #4 to relieve pressure within the
backflow assembly.
1. After #3 test cock has been opened to relieve pressure, remove #3 test cock from housing. When repairing an
8" or 10" (200 or 250mm) device, remove both Victaulic
couplers from body. Slide the downstream Victaulic
coupler gasket to the downstream side of the housing.
The upstream Victaulic coupler gasket stays in place.
Figure A
Service Hole
Figure B
2. Remove checks to be maintenanced.
3. Locate the service hole and thread in the service bolt by
hand until it contacts the linkage. (Figure A)
4. Continue to thread in service bolt with the wrench until the
service hole in the linkage is aligned with the service notches
on the spring arbors. (Figure A)
5. Insert the Phillips screwdriver through the arbors and service hole
of the linkage making sure that the tip of the screwdriver extends
past the ends of the arbors by a minimum of
6. Back out the service bolt until load is transferred to the screwdriver. Continue to back out the service bolt until sufficient clearance is achieved to remove the complete spring mechanism.
7. To disconnect linkage, remove retaining clip and pin (store in a
safe location for reinstallation).
8. To remove spring mechanism, grasp the screwdriver at the center
and pull complete assembly straight out and store in a safe place.
9. Reinstall in reverse.
!
WARNING
While the spring mechanism is removed for check servicing; never
pull the screwdriver out or off the support notches on the arbors.
Doing so may cause bodily injuries.
Testing — Double Check Valve Assemblies
1
/4" (6mm). (Figure B)
Test Check Valve No. 1
Step 1: Ensure shutoff #1 is open, shutoff #2 is closed.
Step 2: Connect high side hose to test cock #3, low side to test
cock #2 and open both test cock #2 and test cock #3.
Step 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.
Step 4: Connect vent hose loosely to test cock# 1. Open valve
A to vent air from vent hose, Tighten vent hose at test
cock #1, open test cock #1.
Step 5: Close shutoff #1. Slowly loosen hose at test cock #2
until differential gauge rises to 2psi and retighten hose.
If the differential reading does not decrease, record
check valves as “tight”.
Test Check Valve No. 2
Step 1: Move the high side hose to test cock #4, low side to test
cock #3 and open both test cock #3 and test cock #4.
Remove vent hose from test cock #1, open shutoff #1.
Step 2: Open valve C, then open valve A to bleed air from the
high side. Close valve A, then open valve B to bleed low
side. Close valve B.
Step 3: Connect vent hose loosely to test cock #1. Open valve A
to vent air from the vent hose. Tighten vent hose at test
cock #1, open test cock #1.
Step 4: Close shutoff #1, and then slowly loosen hose at test
cock #3 until differential gauge rises to 2psi and retighten hose. If the differential reading does not decrease,
record check as tight. Remove all hoses and restore
valve to original working condition.
NOTICE
The assembly will fail both the first and second check valve tests
above, if shutoff #2 leaks excessively. To test for a leaky #2 shutoff,
use the following procedure.
Test for Leaky No. 2 shutoff
Step 1: Connect the high side to test cock #1, low side to test
cock #4. Open test cock #1 and test cock #4. Close
shutoffs #1 and #2.
Step 2: Close valve C. Open valve A, then open valve B
loosen hose at test cock #4 to remove air. Retighten hose.
Step 3: If the differential gauge rises above 0, there is excessive
leakage at shutoff #2 and it must be replaced to test the
assembly.
Ball Type Test Valves
A
C
B
Needle
Valve
Vent Hose
High Hose
(Blue)
(Yellow)
Low Hose
(White or Red)
Test Cock Test Cock Test Cock Test Cock
No. 1 No. 2 No.3 No.4
3
1
/2 turn,
Parts
8. Sleeve O-ring
3. Check Module O-ring
1. First Check Module
For repair kits and parts, refer to our Backflow Prevention Products Repair Kits & Service Parts price list
PL-A-RP-BPD found on www.amesfirewater.com.
6. Closure Sleeve Test Cock with O-ring
7. Closure Sleeve
5. E-clip and Clevis Pin
4. Elastomer Shutoff Disc
2. Second Check Module
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.
www.amesfirewater.com
A Watts Water Technologies Company
RP/IS-A-C200/C300 1322 EDP# 7018382 © 2013 Ames Fire & Waterworks
USA: Backflow-Tel:(916)928-0123•Fax:(916) 928-9333
Control Valves-Tel:(713)943-0688•Fax:(713) 944-9445
Canada:Tel:(905)332-4090•Fax:(905) 332-7068
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