Watts 660GD-13-17 Installation, Operation And Maintenance Manual Download Page 5

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Setting the Delayed Opening
Control

Adjust the tank draw-down Delayed Opening Control by turning
the adjustment screw IN, clockwise, to increase, or OUT, counter-
clockwise, to decrease opening delay (See Figure 5B) .

4 IOM-A-ACV-960-13-17_660-13-17 2115

EDP# 1917068

IOM-A-ACV-960-13-17_660-13-17 2115

EDP# 1917068

Counterclockwise to DECREASE

opening delay

Clockwise to INCREASE

opening delay

Figure 5

CP15 — Delayed Opening Control

Summary of Contents for 660GD-13-17

Page 1: ...g the Altitude Controls 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 informati...

Page 2: ...tall isolation valves upstream and downstream of the main valve Note If using butterfly valves ensure valve disc does not contact the main valve 4 Provide adequate clearance for valve servicing and ma...

Page 3: ...air will need to be bled off the valve cover during startup The ACV includes a bleed valve use a flat head screwdriver to slowly open the valve See Figure 1 STEP 3 Pressure the line by opening the ups...

Page 4: ...slightly below the tank over flow mark eliminat ing any wave action discharge from the over flow pipe Setting the Altitude Pilot STEP 4 Slowly open the downstream isolation valve STEP 5 If the valve...

Page 5: ...g the adjustment screw IN clockwise to increase or OUT counter clockwise to decrease opening delay See Figure 5B 5A 5B IOM A ACV 960 13 17_660 13 17 2115 EDP 1917068 2021 Watts 5 Counterclockwise to D...

Page 6: ...cification 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...

Page 7: ...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 diaphrag...

Page 8: ...e 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 the...

Page 9: ...h 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 threaded...

Page 10: ...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 integrity o...

Page 11: ...Steel 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...

Page 12: ...sulting 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...

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