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Troubleshooting Guide

 

6          IOM-A-ACV-980-16_680-16   2115 

EDP# 1917100 

© 2021 Watts

IOM-A-ACV-980-16_680-16   2115 

EDP# 1917100 

© 2021 Watts         7

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 open-
ing 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 
11/2 - 21/2 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

Summary of Contents for AMES 980-16GD

Page 1: ...Control Valve 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 provide...

Page 2: ...valve into service in a controlled manner to protect the system from damaging over pressure Operation The Pump Control Valve is designed to minimize the surges associ ated with the starting and stoppi...

Page 3: ...mes to confirm rate of movement and remove excess air trapped within the cover chambers See Figure 1 Below To increase the rate of opening closing turn the adjustment screws on the speed controls OUT...

Page 4: ...n valve de energize the solenoid checking that the main valve closes STEP 5 STEP 7 Closing Speed Flow Adjustment While free flow goes into the upper chamber the closing speed flow control restricts fl...

Page 5: ...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...

Page 6: ...in 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 asse...

Page 7: ...move cover nuts and washers 3 Remove the cover If cover is not free to be removed loosen it by tapping upward along its outside edge with a dull cold chisel pic tured above a Large valves may require...

Page 8: ...posits and inspect for excessive wear Remove any mineral build up from other components with wire brush or by using a Mineral Dissolving Solution Inspect parts for wear and replace if necessary 7 Insp...

Page 9: ...for smooth travel by following the Freedom of Movement Test procedure in previous section 11 Test the integrity of the Seat Seal by following the Seat Seal Test procedure in previous section 12 Retur...

Page 10: ...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...

Page 11: ...IOM A ACV 980 16_680 16 2115 EDP 1917100 2021 Watts 11 NOTES...

Page 12: ...021 Watts USA Backflow T 978 689 6066 F 978 975 8350 AmesFireWater com USA Control Valves T 713 943 0688 F 713 944 9445 AmesFireWater com Canada T 888 208 8927 F 905 481 2316 AmesFireWater ca Latin Am...

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