FEBCO 826YD DuraCheck In-Line Design Reduced Pressure Detector Assemblies - Manual (Page 2)

M A I N T E N A N C E M A N U A L
Service and Maintenance
Service Procedure
Close the outlet shutoff valve, then close the inlet shutoff valve. Bleed
residual pressure from the assembly by opening the #4, #3, and # 2 test
cocks in this sequence.
General
1. Detailed maintenance manuals are available from your local FEBCO
representative.
2. Rinse all parts with clean water prior to reassembly.
3. DO NOT USE ANY PIPE DOPE, OIL, GREASE OR SOLVENT ON ANY
PARTS unless instructed to do so.
4. Do not force parts. Parts should fit together freely. Excess force may
cause damage and render the assembly inoperable.
5. Carefully inspect seals and seating surfaces for debris or damage.
6. After servicing, repressurize the assembly and test to ensure proper
operation.
Check Valve Disassembly
1.
CAUTION: The cover retains the spring on 2 1 ⁄
2
" - 3" (65 - 80mm) valve sizes.
Remove the cover capscrews uniformly while holding the cover in place.
Carefully reduce hand force on the cover to relieve spring compression.
The check module on the 4" - 10" (100 - 250mm) valve sizes retains the
spring. Unscrew the capscrews uniformly to avoid binding the cover in
the body bore. The spring will push the cover approximately 1 ⁄
2
" off the
top of the body.
2. Lift the spring and check assembly 2 1 ⁄
2
" - 3" (65 - 80mm) or check mod-
ule 4" - 10" (100 - 250mm) from the body.
3. Inspect and clean debris from the disc and seat ring. Replace any dam-
aged parts.
4. Use the reverse procedure to assemble. If necessary, apply a thin film
of FDA/NSF approved grease to cover the O-ring. Install the capscrews
and tighten in a uniform cross pattern.
Relief Valve Disassembly
1. Remove the capscrews holding the cover to the relief valve body, and
remove the cover.
2. Remove the diaphragm and pull the internal assembly from the body. It
may be helpful to push the internal assembly with your fingers through
the discharge opening.
3. Inspect for debris, damage or fouling of the seat disc. Clean or replace
the rubber disc as required.
4. Reposition the internal assembly and diaphragm into the body. Install
the cover and cap screws.
Field Test Procedure
FEBCO recommends the use of the appropriate test method presented in
the ASSE Series 5000 manual that is consistent with your local codes.
Troubleshooting
PROBLEM CAUSE SOLUTION
1. Continuous relief a. Debris on check Disassemble and clean
valve discharge seating surfaces
b. Debris on relief valve Disassemble and clean
seating surfaces
2. Intermittent relief a. Inlet pressure fluctuations Eliminate fluctuations
valve discharge
b. Downstream pressure Eliminate surges
surges
3. Low flows passing a. Mainline check fouled Disassemble and clean
through mainline b. Bypass line plugged Disassemble and clean
valve (RPDA)
Note: The gap drain is not designed to catch the maximum discharge pos-
sible from the relief valve. The installation of FEBCO air gap with the drain
line terminating above a floor drain will handle any normal discharge or nui-
sance spitting through the relief valve. However, floor drain size may need
to be designed to prevent water damage caused by a catastrophic failure
condition. Do not reduce the size of the drain line from the air gap fitting.
A Division of Watts Water Technologies, Inc. USA: 4381 N. Brawley • Ste. 102 • Fresno, CA • 93722 • Tel. (559) 441-5300 • Fax: (559) 441-5301 • www.FEBCOonline.com
Canada: 5435 North Service Rd. • Burlington, ONT. • L7L 5H7 • Tel. (905) 332-4090 • Fax: (905) 332-7068 • www.FEBCOonline.ca
IS-F-825YD-826YD 0845 EDP# 980005 © FEBCO, 2008
Limited Warranty: FEBCO 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.