background image

STEP 6

Actuate the solenoid to open the main valve, checking that the 
main valve opens.

Step 7

Slowly open downstream isolation valve to establish flow through 
the system.

Counterclockwise to DECREASE 

downstream pressure

Clockwise to INCREASE-

downstream pressure

Step 9 

Opening Speed Flow Control Adjustment: The Opening speed 
flow control allows free flow into the cover and restricted flow out 
of the cover of the main valve. If recovery of pressure is slow upon 
increased downstream demand, turn the adjustment screw OUT, 
counterclockwise, increasing the rate of opening. IF recovery of 
downstream pressure is too quick, as indicated in a rapid increase 
in pressure, possibly higher than the desired set-point, turn the 
adjustment screw IN, clockwise, decreasing the rate of opening 
(See Figure 3).

Step 8

Fine-tune the Pressure Reducing Control adjustment to the 
desired pressure set point by turning the adjustment screw IN, 
clockwise to increase or OUT, counterclockwise to decrease 
downstream pressure (See Figure 2).

Counterclockwise to INCREASE 

the rate of opening

Clockwise to DECREASE 

rate of opening

Figure 3 

Flow Control

Figure 2 

CP15 — Pressure Reducing Control

4          IOM-A-ACV-910-15_610-15   2115 

EDP# 1917036 

© 2021 Watts

IOM-A-ACV-910-15_610-15   2115 

EDP# 11917036 

© 2021 Watts         5

Summary of Contents for AMES 910GD-15

Page 1: ...ng 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...

Page 2: ...and operation without disassembly 3 Install isolation valves upstream and downstream of the main valve 4 Connect solenoid wiring leads to desired switching device using safe standard electrical practi...

Page 3: ...4 48 52 D in 10 10 12 14 14 16 24 26 28 30 34 40 STEP 4 To ensure proper operation any trapped air will need to be bled off the valve cover during startup If your ACV includes a bleed valve use a flat...

Page 4: ...ment screw OUT counterclockwise increasing the rate of opening IF recovery of downstream pressure is too quick as indicated in a rapid increase in pressure possibly higher than the desired set point t...

Page 5: ...id pressure into the main valve cover chamber controlling the valve closing speed If the downstream pressure fluctuates slightly above the desired set point turn the adjustment screw OUT counterclockw...

Page 6: ...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 7: ...djust 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 Val...

Page 8: ...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 9: ...rush or by using a Mineral Dissolving Solution Inspect parts for wear and replace if necessary 7 Inspect valve seat If seat is not damaged removal is not necessary Valve seats 6 and smaller are thread...

Page 10: ...ts in a crossing pattern 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 integrit...

Page 11: ...el 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 Iro...

Page 12: ...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 cont...

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