Watts LFM115-58 - User Manual

Installation, Operation and Maintenance
Pressure Reducing Control Valve with Return Flow Feature
Sizes: 1¼" to 24"
NOTICE
For Australia and New Zealand: Pipeline 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 compli-
ance 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.
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.
Table of Contents Page
Introduction............................................2
Installation.............................................2
Setting the Pressure Reducing Control ......................3
Maintenance Schedule...................................6
Trouble Shooting Guide ..................................6
Valve Disassembly Instructions ........................ 8
ACV Schematic .......................................11
Local building or plumbing codes may require modifica-
tions to the information provided. You are required to
consult the local building and plumbing codes prior
to installation. If the information provided here is not
consistent with local building or plumbing codes, the
local codes should be followed. This product must be
installed by a licensed contractor in accordance with
local codes and ordinances.
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. 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 and external components
helps assure maximum life and proper product function.
WARNING
!
Model LFM115-58/LFM6115-58
IOM-ACV-115-58_6115-58

Summary

Standard Components

Operation

Installation

Valve Servicing Dimensions

Setting the Pressure Reducing Control

Automatic Control Valve Maintenance Schedule

Monthly Maintenance

Visual inspection of valve(s) for leaks and proper operation; exercise valve.

Quarterly Maintenance

Conduct monthly inspections and validate/re-establish control setpoints.

Annual Maintenance

Perform monthly/quarterly checks, clean strainers, inspect coating.

3-5 Year Maintenance

Conduct all prior checks, replace valve elastomers and re-establish setpoints.

Troubleshooting Guide

Diaphragm Seal Test

Test the diaphragm seal for leaks by allowing pressure to lift the disc assembly.

Seat Seal Test

Check for leakage through the main valve seat by monitoring downstream pressure.

Freedom of Movement;Valve Travel Test

Assess disc and diaphragm assembly movement from closed to open position without binding.

Valve Disassembly Instructions

ACV Assembly Diagram

Limited Warranty

Watts LFM115-58 Specifications