background image

Setting the Altitude Controls

STEP 1

Pre-set pilots as noted:

Altitude Control

 – Adjust OUT, counterclockwise, backing pressure off the spring. This simulates a low tank setting which can be 

gradually increased to the desired setting.

Opening and Closing Speed

 – Turn the adjustment screws on the Closing Speed and Opening Speed Controls, if the main valve is so 

equipped, OUT, counterclockwise, 1½ to 2½ turns from full closed position.

STEP 2

Energize the solenoid to check actuation and to confirm connection 
to power source and so that initial valve filling is against the closed 
solenoid.

NOTE:

 In cases when testing is required prior to electrical installa-

tion the solenoid can be manually engaged using the manual over-
ride red knob on the end of the solenoid.

STEP 3

To ensure proper operation, any trapped 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 4

Pressure the line, by opening the upstream isolation valve slowly. Air 
is vented through the air bleed valve. Tighten the fitting when liquid 
begins to vent (See Figure 1).

Repeat the process until no air is trapped in the system.

STEP 5

Switch the solenoid to the open position (de-energize solenoid).

Globe

Angle

Size (in)

1

 

1/4

1

 

1/2

2

21/2

3

4

6

8

10

12

14

16

20

24

A (in)

16

16

20

22

22

24

32

34

38

44

48

52

56

56

B (in)

10

10

12

14

14

16

24

26

28

30

34

40

48

48

Size (in)

1

 

1/4

1

 

1/2

2

2

 

1/2

3

4

6

8

10

12

14

16

C (in)

16

16

20

22

22

24

32

34

38

44

48

52

D (in)

10

10

12

14

14

16

24

26

28

30

34

40

The following tables detail the recommended minimum valve servicing dimensions.

          

B

          

          

FLOW

FLOW

FLOW

          

FLOW

Valve Servicing Dimensions

Counterclockwise to OPEN 

bleed valve

Figure 1 

Position Indicator

IOM-ACV-127-32_6127-32 2115 

EDP# 1917061 

© 2021 Watts         3

Содержание LFM127-32

Страница 1: ... 2 Setting 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 information provided You are required to consult the local building and plumbing codes prior to installation If the information provided here is not consistent with local building or plumbing codes th...

Страница 2: ... 5 Adjustable Opening Speed 6 Adjustable Closing Speed 7 3 Way Solenoid 8 3 Way Ball Valve P Position Indicator X Isolation Cocks 1 Prior to installation flush line to remove debris 2 Install valve so the flow arrow matches flow through the line and gauges to monitor valve inlet and outlet pressures A Position Indicator can be installed to provide visual indication of valve position and operation ...

Страница 3: ...ed 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 4 Pressure the line by opening the upstream isolation valve slowly Air is vented through the air bleed valve Tighten the fitting when liquid begins to vent See Figure 1 Repeat the process until no air is trapped in the system STEP 5 Sw...

Страница 4: ...vel SLOWLY turn the adjustment screw IN clockwise by to turn increments See Figure 3 This will cause the valve to start opening filling the tank Additional clockwise adjustment may be necessary to raise the level to the overflow line 4 IOM ACV 127 32_6127 32 2115 EDP 1917061 2021 Watts Clockwise to INCREASE minimum tank level set point Figure 3 Model 27 Altitude Pilot Figure 2 Position Indicator S...

Страница 5: ...ent upon the installation application and may not be required on all valves When the valve is closed the Altitude control screw adjustment may be turned OUT counter clockwise an additional to turn See Figure 5 This will lower the shut off level slightly below the tank over flow mark eliminating any wave action discharge from the over flow pipe STEP 10 Closing Speed Control Adjustment The closing s...

Страница 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 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 isolation valve...

Страница 7: ...tion 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 r...

Страница 8: ...Remove 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 installation of lifting eye bolts in order to facilitate cover removal installation ports are provided on the cover for this purpose 4 Remove the Disc and Diaphragm Assembly from the valve body ...

Страница 9: ...brush 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 into the body of the valve and require a seat removal tool Figure 6 Table 1 details the tool dimensions for seat removal Valve seats 8 and larger are held in the valve body with stainless steel ca...

Страница 10: ...Nuts 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 of the Seat Seal by following the Seat Seal Test procedure in previous section 12 Return valve to service by following instructions on the Technical Bulletin matching the valve function Size in 11...

Страница 11: ...eel 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 13 Seat Disc Buna N Nitrile 14 Spacer Washer x5 NY300 Fiber 15 Disc Guide ASTM A743 CF8M 316 Stainless Steel 16 Shaft ASTM A276 304 Stainless Steel 17 Seat Ring ASTM A743 CF8M 316 Stainless Steel 1...

Страница 12: ...not be responsible for any incidental special or consequential damages including without limitation lost profits or the cost of repairing or replacing other property which is damaged if this product 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 o...

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