Watts AMES LF685GD-20 Series Скачать руководство пользователя

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ES-A-ACV-LF985GD-20 2115

Issue

Possible Cause

Corrective Action

Notes

Main Valve will not
open

Closed isolation valves in pilot system.

Check isolation valves, ensure
open.

Insufficient supply pressure.

Check upstream pressure.

Depending on water
source, supply pressure
may not be controlled by
valve operator.

Main valve stem assembly corroded/
damaged

Inspect stem assembly, clean/
replace if necessary.

Blockage in pilot system.

Inspect & clean any installed
pilot system strainers, check
orifice/speed controls for
blockages.

Improperly configured opening speed
control.

Adjust opening speed control
to verify functionality, adjust as
required.

Standard setting for
opening speed control is
1

1/2

- 2

1/2

turns open from

full closed position. Can be
adjusted in field.

Main Valve will not
close

Closed isolation valves in pilot system

Check isolation valves, ensure
open.

Diaphragm is damaged

Conduct diaphragm seal test,
repair and replace if necessary.

Main valve stem assembly corroded/
damaged.

Inspect stem assembly, clean/
replace if necessary.

Blockage in main valve.

Perform freedom of movement
test; if valve does not close,
disassemble and remove
blockage.

Worn/damaged valve seat.

Perform seat sealing check;
disassemble and inspect/re-
pair seat if required.

Improperly configured closing speed
control.

Adjust closing speed control
to verify functionality, adjust as
required.

Standard setting for
closing speed control is
1

1/2

- 2

1/2

turns open from

full closed position. Can
be adjusted in field.

Solenoid will not
actuate

Possible Cause: Low or no voltage

Check voltage at the solenoid
connection, insuring that it has
the minimum of 85% of the
coils rated voltage.

Should be performed by
licensed electrician

Manual operated is engaged

Turn manual operator counter-
clockwise to disengage

Troubleshooting Guide

Installation, Operation and Maintenance - Series LF985GD-20

Содержание AMES LF685GD-20 Series

Страница 1: ... 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 servic...

Страница 2: ... an open valve Pump start up When the pump is signaled to start the 4 Way Solenoid is energized and directs fluid and pressure into the cover chamber above the diaphragm and relieves fluid and pressure from the power chamber below the diaphragm The fluid and pressure relieved from the cover chamber is vented to atmosphere or available floor drain The valve closes at an adjustable rate gradually ad...

Страница 3: ...diaphragm assembly This assembly is the only moving part within the valve allowing it to open or close as commanded by the pilot control system When pressure is applied to the upper diaphragm chamber and released from the lower diaphragm chamber the valve travels to a closed position When pressure is applied to the lower diaphragm chamber and released from the upper diaphragm chamber the valve tra...

Страница 4: ...sure Drop psi 2 3 4 6 8 10 20 30 40 60 80 100 Flow Rate Gallons per minute Water 2 4 10 20 40 60 80 100 200 500 1000 2000 5000 10000 20000 100000 8 6 1 4 1 6 1 2 1 0 8 6 4 3 2 1 2 2 1 2 1 0 8 6 4 3 2 1 2 2 Angle Globe C V Suggested Maximum continuous flow based on velocity of 20 ft per second Maximum intermittent flow based on velocity of 25 ft per second Minimum flow rates based on a 20 40 psi pr...

Страница 5: ...le Iron 11 Diaphragm Buna N Nitrile 12 Inner Bearing Bolts 3 and Smaller ASTM A276 304 Stainless Steel 13 Inner Bearing Retainer 3 and Smaller ASTM A276 302 Stainless Steel 13A Bearing Retaining Ring 4 and Larger ASTM A276 302 Stainless Steel 14 Inner Bearing ASTM A276 304 Stainless Steel 15 O ring Buna N Nitrile 16 O ring Buna N Nitrile 17 Stem ASTM A276 304 Stainless Steel 18 Disc Retainer ASTM ...

Страница 6: ...ng Weights A B C D E F G H I J K L M in in mm in mm in mm in mm in mm in mm in mm in mm in mm in mm in in in lbs kgs 2 93 8 238 93 8 238 10 254 9 230 4 120 43 4 121 5 127 31 4 83 31 4 83 31 2 89 3 8 1 2 1 4 45 20 21 2 11 279 11 279 115 8 295 105 16 262 51 2 140 51 2 140 57 8 149 4 102 4 102 45 16 110 1 2 1 2 1 2 70 32 3 121 2 318 12 305 131 4 337 111 2 291 61 4 159 6 152 63 8 162 41 2 114 4 102 43...

Страница 7: ... EPDM optional Viton optional Voltage 24VDC 24VAC or 120VAC Enclosure General Purpose NEMA 4 standard Explosion Proof NEMA 6 6P 7 9 optional Action 4 Way Actuation Solenoid Action only Main valve action energize to open or energize to close is dependent on the particulars of the pilot system Brass solenoids are not lead free and it is illegal to use them in potable services in the United States su...

Страница 8: ... the valve opens or closes The adjustable collar is normally set to contact the trip arm when the main valve is closed The collar can be positioned on the stem by loosening the set screw to actuate the switch at the desired point of valve travel Single Pole Double Throw Switch Common Lug Normally Open Normally Closed Specifications Body Material Stainless Steel Elastomers Buna N standard EPDM opti...

Страница 9: ...on In the free flow direction the seat moves out of the flow path to all unrestricted flow Specifications Standard Flow Control Large Flow Control FLOW FLOW CLOSED Fluid Speed Controlled by Needle FLOW External Threads Internal Threads FLOW OPEN Free Flow Seat Full Open Size Standard Flow MNPT x 3 8 FNPT High Flow 1 2 MxF NPT Body Material Lead Free Brass Stainless Steel optional Seat Lead Free Br...

Страница 10: ...crew clockwise raises the control set point Turning the adjustment screw counterclockwise lowers the control setpoint The LFPV20C is equipped with one 1 2 NPT inlet and outlet port and a 1 4 NPT side sensing port located on the power chamber The 1 4 side sensing port is used to monitor upstream or down stream pressure as required by specific valve function Body Material Lead Free Copper Silicon Al...

Страница 11: ...pilot circuit speed controls and pilots The filter element can be accessed for cleaning by removing the clean out cap or may be cleaned by installing an optional blow down ball valve The wetted surface of this product contacted by consumable water contains less than 0 25 of lead by weight Body Material Lead Free Copper Silicon Alloy CF8M 316 Stainless Steel optional Retainer Cap Lead Free Copper S...

Страница 12: ...are used in pilot lines to provide a positive shutoff in any override or maintenance situation for simple trouble shooting This 2 piece full port valve features bottom loaded stems PTFE seats and packing Size Dimensions Weight C H L in in mm in mm in mm lbs kg 1 4 113 16 46 37 16 87 13 4 45 0 4 0 2 3 8 113 16 46 37 16 87 13 4 45 0 4 0 2 1 2 113 16 46 37 16 87 115 16 50 0 4 0 2 3 4 21 4 57 4 101 25...

Страница 13: ...er Size 1 4 3 4 NPT Model LF60 Flo Clean Strainers are used to filter the fluid pass ing through the pilot circuit and provide protection to pilot circuit speed controls and pilots It is installed in the inlet body port of the Main Valve exposing the strainer element to main line flow The currents and flow across the screen create a self scouring effect cleaning the filter element The wetted surfa...

Страница 14: ...avel Body Material Stainless Steel Elastomers Buna N standard EPDM optional Viton optional Enclosure NEMA 1 3 4 and 13 General Purpose standard NEMA 1 7 and 9 Explosion Proof optional Electrical Form C SPDT Switch 15 amp 125 250 or 480 VAC amp 125 VDC amp 250 VDC Conduit Connection The wetted surface of this product contacted by consumable water contains less than 0 25 of lead by weight Item Descr...

Страница 15: ...e made during installation to protect the piping circuit from dam age Only remove the pilot control system from the valve if necessary Tubing and fittings should be kept clean and replaced exactly as removed Consult appropriate hydraulic schematic to ensure proper re assembly 5 Connect solenoid wiring leads to desired switching device using safe standard electrical practices 6 Wire the limit switc...

Страница 16: ...e See Figure 2B below In decrease the rate of opening closing turn the adjustment screws on the speed controls IN clockwise See Figure 2A below STEP 2 Prior to pump start energize the solenoid to confirm connection to power source STEP 3 De energize the solenoid prior to initial pump start STEP 4 Energize the solenoid at pump start to close the main valve checking that the main valve closes STEP 5...

Страница 17: ...ber While free flow goes into the lower chamber the Opening speed flow control restricts flow out of the upper cham ber of the main valve If valve opening is too slow turn the adjustment screw OUT counterclockwise increasing the rate of opening If valve opening is too quick turn the adjustment screw IN clock wise decreasing the rate of opening STEP 10 At valve full open position deep well pump wil...

Страница 18: ...t valve specification sheets for approximate cover capacity A continuous flow of water from the open port indicates a damaged diaphragm or loose disc diaphragm assembly Disassemble valve and replace diaphragm or tighten disc diaphragm assembly Test 2 Seat Seal Test 1 Close downstream isolation valve and install pressure gauges on an open inlet and outlet port of main valve 2 Open upstream isolatio...

Страница 19: ...lation valves ensure open Diaphragm is damaged Conduct diaphragm seal test repair and replace if necessary Main valve stem assembly corroded damaged Inspect stem assembly clean replace if necessary Blockage in main valve Perform freedom of movement test if valve does not close disassemble and remove blockage Worn damaged valve seat Perform seat sealing check disassemble and inspect re pair seat if...

Страница 20: ...tem Nut examine stem threads for mineral build up Remove deposits with a fine wire brush Extreme care should be taken not to damage the finish on stem guiding surfaces when disassembling Avoid applying pipe wrenches to top or bottom stem guide surfaces 6 After removing the Stem Nut the remainder of the Disc Diaphragm Assembly should disassemble easily Polish stem guide surfaces with fine emery clo...

Страница 21: ...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 no...

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