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ES-A-ACV-LF984GD  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

 

22

 

Troubleshooting Guide

 

© 2021 Watts

Installation, Operation and Maintenance - Series LF984GD 

Содержание AMES LF984GD Series

Страница 1: ...tor 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...

Страница 2: ...ening speed control which restricts the speed of fluid and pressure evacuating the main valve cover chamber The valve remains open during the pumping cycle Rate of Flow Feature During the pumping cycl...

Страница 3: ...is Ames Automatic Control Valve ACV is a full port single chamber basic valve that incorporates a one piece disc and dia phragm assembly This assembly is the only moving part within the valve allowing...

Страница 4: ...530 1945 Pressure 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 4 8 1 0 1 2 1 4 1 6 6 2 1 1 2 3 8 1 0...

Страница 5: ...l 9 Stem Washer ASTM A276 304 Stainless Steel 10 Diaphragm Washer ASTM A536 65 45 12 Epoxy Coated Ductile Iron 11 Diaphragm Buna N Nitrile 12 Disc Retainer ASTM A536 65 45 12 Epoxy Coated Ductile Iron...

Страница 6: ...e NPT Port Size NPT Shipping Weights A B C D E F G H I J K L in in mm in mm in mm in mm in mm in mm in mm in mm in mm in mm in in lbs kgs 11 4 71 4 184 51 2 140 3 8 1 4 20 9 11 2 71 4 184 81 2 216 51...

Страница 7: ...he Main Valve open and closed When the cover of the Accelerator Pilot is de pressurized the main valve cover chamber is connected to upstream pressure causing the valve to close drip tight When the co...

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...

Страница 9: ...stomers Nitrile standard EPDM optional Viton optional Voltage 24VDC 24VAC or 120VAC Enclosure General Purpose NEMA 4 standard Explosion Proof NEMA 6 6P 7 9 optional Action Normally Open or Normally Cl...

Страница 10: ...lve cover This causes the main valve to close until inlet pressure is again greater than outlet Standard Material Brass Housing and Body Stainless Steel Indicating Rod Optional Material Stainless Stee...

Страница 11: ...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 FLO...

Страница 12: ...ure signal is sensed below the diaphragm An increase in flow rate causes the differential pressure across the orifice plate to increase The Pilot modulates toward a closed position when the differenti...

Страница 13: ...3 Cap Screw 4 Power Chamber 5 O Ring 6 Body 7 Seat 8 Adjusting Screw 9 Pin 10 Adapter 11 O Ring Included in Repair Kit Item Description 12 Spring Guide 13 Nut 14 Belleville Washer 15 Diaphragm Washer...

Страница 14: ...ilot 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...

Страница 15: ...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 Dim...

Страница 16: ...r 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 t...

Страница 17: ...vel 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...

Страница 18: ...roper re assembly 6 Connect solenoid wiring leads to desired switching device using safe standard electrical practices 7 Wire the limit switch contacts to the proper relay connections using safe stand...

Страница 19: ...art to open the main valve checking that the main valve opens Air is vented through the loosened fitting Tighten the fitting when liquid begins to vent Clockwise for MANUAL Operation Figure 1 3 Way So...

Страница 20: ...g Speed Needle Valve Adjustment The closing speed needle valve regulates fluid pressure into the main valve cover chamber controlling the valve closing speed If valve closing is too slow turn the adju...

Страница 21: ...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 di...

Страница 22: ...ation 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 Blo...

Страница 23: ...require a lifting eye bolt to be installed in the valve stem accessory threads located on the very top of the valve stem 5 Before removing Stem Nut examine stem threads for mineral build up Remove dep...

Страница 24: ...to ensure even distribution Test the Disc and Diaphragm Assembly for smooth travel by following the Freedom of Movement Test procedure in previous section 11 Test the integrity of the Seat Seal by fol...

Страница 25: ...s 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 ove...

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