Watts LFU009 - Manual (Page 4)

Check Assemblies
Seat Seat
O-ring
Disc
Assembly
Spring Retainer Cage
Seat
Flow Tube
Cover
Cover O-ring
Relief
Valve
Assembly
Body
Retainer
Second Check
Service Parts Kit
First Check
Service Parts Kit
CHECK ASSEMBLY 3 ⁄
4
" M3
O-ring
Seal
Spring Disc Seat
Check
Cage
CHECK ASSEMBLY 1 ⁄
4
" – 3 ⁄
4
"
Injection Molded
Acetal Resin
O-ring Seal
Stainless Steel
Spring
Silicone Seal 1st Check
Module
Cover O-ring
Retainer
Second Check Assembly
First Check Assembly
Relief
Valve
Module
CHECK ASSEMBLY 1" - 2" (25 – 50mm)
Seat
Seat O-ring
Disc Assembly
Spring
Check Cage
RP/IS-009 1319 EDP# 1911300 © 2013 Watts
USA: Tel: (978) 688-1811 • Fax: (978) 794-1848 • www.watts.com
Canada: Tel: (905) 332-4090 • Fax: (905) 332-7068 • www.watts.ca
limited warranty: Watts Regulator Co. (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.
A Watts Water Technologies Company
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
Watts re serves the right to change or modify prod uct
de sign, con struc tion, spec i fi ca tions, or ma te ri als with out
prior notice and without in cur ring any obligation to make
such chang es and mod i fi ca tions on Watts prod ucts
previously or subsequently sold.
Troubleshooting Guide
Symptom Cause Solution
1. Check valve fails to hold
1.0 PSID minimum
a. Debris on check disc
sealing surface
Disassemble and clean
b. Leaking isolation valve Disassemble and clean
or repair
c. Damaged seat disc or
seat o-ring
Disassemble and replace
d. Damaged guide holding
check open
Disassemble and clean or
replace
e. Weak or broken spring Disassemble and replace
spring
2. Chatter during flow
conditions
a. Worn, damaged or
defective guide
Disassemble and repair
or replace guide
3. Low flows passing
through mainline valve
a. Mainline check fouled Disassemble and clean
b. Meter strainer plugged Disassemble and clean
c. Damaged mainline seat
disc or seat
Disassemble and replace
d. Broken mainline spring Disassemble and replace
Servicing First & Second Check Valves
Series 009 and LF009 — 1 ⁄
4
" – 3" (8 – 80mm)
For repair kits and parts, refer to our Backflow
Prevention Products Repair Kits & Service Parts
price list PL-RP-BPD found on www.watts.com.