Watts AMES Deringer 40 User manual

Installation, Operation and

Maintenance Manual

IOM-A-Deringer 40/40X/50/50X_6-8

Deringer™40/40X/50/50X

Reduced Pressure Zone/

Reduced Pressure Detector Assemblies

Size: 40/50: 6"&8"

40X/50X: 4"&6"

WARNING

Read this manual BEFORE using this equipment.

Failure to read and follow all safety and use information can

result in death, serious personal injury, property damage, or

damage to the equipment.

Keep this manual for future reference.

You are required to consult the local building and plumbing

codes prior to installation. If the information in this manual

is not consistent with local building or plumbing codes,

the local codes should be followed. Inquire with governing

authorities for additional local requirements.

WARNING

This list is the recommended tools for installation. Other

versions of the same tool can be used. For example, allen

wrenches instead of allen drive sockets.

Tools Required

15/16" Socket

11/8" Socket

Wood Block 2" x 4" x 5"

Wood Block 1" x 2" x 16"

#2 Phillips Head Screwdriver #2 Flathead Screwdriver 5/8" Ratchet Wrench

7/16" Ratchet Wrench (x2)

9/16" Ratchet Wrench

Adjustable Wrench Deringer Test Cock Wrench Slip-joint Pliers

Toothbrush

Closing Shutoff Valves Prior to Maintenance

1. Slowly rotate shutoff valve #2 handle (C) clockwise to the

closed position. Flag perpendicular to flow (A).

2. Slowly rotate shutoff valve #1 handle (B) clockwise to the

closed position. Flag perpendicular to flow (A).

NOTICE

When yellow/orange position indicator flags are parallel with the flow of water

the shutoff valves are in the open position. Before doing any maintenance be

sure the yellow or orange flow indicators (flags) are perpendicular to the flow

of water valve body indicating shutoff valves are in the closed position (A).

FLOW

Opening Test Cocks and Bleeding All Pressure

from the Line Before Maintenance

NOTE: valve is still under pressure. When opening test cocks,

water will be released. Take precautions to ensure discharging

water does not damage the surrounding area/equipment or

create an unsafe condition.

1. DO NOT OPEN Main test cock number 1, as it is still

subject to line pressure.

2. Using the DeringerTM test cock wrench or a small

adjustable wrench open (A) main test cock number 4.

(Test cock is open when wrench flats are parallel to water

flow through test cock).

3. Deringer 50/50X only: using a #2 flathead screwdriver open

bypass test cock number 2. (Test cock is open when screw-

driver slot is parallel to water flow through test cock (B)).

4. Using the Deringer test cock wrench or a small adjustable

wrench open main test cock number 3.

5. Deringer 50/50X only: using a #2 flathead screwdriver open

bypass test cock number 1.

6. Using the Deringer test cock

wrench or a small adjustable

wrench open main test

cock number 2.

FLOW

Shut-off Valve (SOV)

Number 1

Shut-off Valve (SOV)

Number 2

Bypass Test CockMain Test Cock

Closed Open Closed Open

Removing Access Port Cover Plate

1. Using a 15/16" socket wrench loosen all eight bolts

on the access port cover plate (A).

2. Remove bolts and tapered washers (B) and store in

a safe place. Be careful not to lose tapered washers

as the access cover will not seal properly without

the tapered washers.

3. Remove access port cover plate (C). Do not remove

access port O-ring (D).

Removing the First Dual-actionTM Check Module

FLOW

1. Use a 15/16" socket wrench to loosen the check

retainer bolts on both sides of the valve body (A).

Do not completely remove check retainer bolts from

valve body. Loosen the bolts until the ends of the

bolts are flush with the inner wall of the valve body

(B).

2. Insert a flathead screwdriver between the inner valve

body and the first check module flange (C), gently

push the first check module in the downstream

direction until the first check module can easily be

removed from the access port by hand.

Removing the Second Dual-action Check Module

1. Use a 11/8" socket wrench to loosen the check retainer

bolts on each side of the valve body (A). Do not

completely remove check retainer bolts from valve

body. Loosen the bolts until the ends of the bolts are

flush with the inner wall of the valve body (B).

2. Insert a flathead screwdriver between the inner valve

body and the second check module flange (C),

gently push the second check module in the

upstream direction until the second check module

can easily be removed from the access port by hand.

FLOW

Deringer 50/50X: Disassembly and Maintenance of Bypass Check Valve

Part 1

1. Use an adjustable wrench to rotate check cover (A) counterclockwise

to remove.

2. Examine cover plate O-ring (B) for damage or fouling.

3. Remove spring (C).

4. Remove check poppet assembly (D) and examine for damage

or fouling.

5. Examine seat cage, located inside the bypass check valve body,

for damage or fouling to the sealing seat. Do not remove unless

the seat cage is being replaced.

6. Reverse the order of above instructions to reassemble bypass

check valve.

Part 2

1. To replace a damaged red silicone poppet disk, use a #2 phillips

head screwdriver to remove the disk retaining screw (A).

2. Remove disk retaining washer (B).

3. Use a flathead screwdriver to remove the gasket from

poppet cavity (C).

4. Install new red silicone poppet disk (D).

5. Reverse the order of the above instructions to reassemble

check poppet assembly.

6. Reverse the order of the instructions on the previous page to

reassemble bypass check assembly.

Deringer 50/50X: Removing Bypass Meter

1. Using the ball valve handles close the #2 bypass ball valve

(B) and then #1 bypass ball valve (A). (Ball valve is closed

when “T” handle is perpendicular to water flow through

ball valve).

2. Using a #2 flathead screwdriver open bypass test cock #2

(D) and then open bypass test cock #1 (C). (Test cock is

open when screwdriver slot is parallel to water flow through

test cock).

3. Using large adjustable pliers or a wrench, unscrew and

retract bypass meter coupling nuts (E). Remove the gaskets

(F) on both sides of bypass meter.

4. Gently remove bypass meter (G) from line. It is OK if the

bypass fittings move slightly during the removal process.

5. Reverse order of above instructions to reinstall bypass

meter. Remember to install gaskets (F) before threading

meter coupling nuts into place.

FLOW

Maintenance of First True Seal Check Module

1. Use a #2 phillips head screwdriver to remove tower screws

(A) from the first check seat (B) the double torsion spring

is captured (C) and does not need to be retained

during maintenance.

2. After removing the tower screws (A) examine the elastomer

disk (D) and check seat (E) for fouling or damage.

3. Should elastomer disk (D) need replacement unscrew disk

retainer screws (F) and remove disk retainer (G). Carefully remove

and replace elastomer disk (D). When replacing elastomer disk

(D) be certain that no air, water or debris is trapped in the

clapper (H) cavity behind the elastomer disk (D).

4. Reverse the order of the above instructions to reassemble

check.

• Elastomer disk must be flat in clapper (H) cavity before

tightening disk retainer screws (F).

• Do not cross thread disk retaining screws (F).

• Check orientation is not important when reattaching the

check to the first check seat.

Maintenance of Second Dual-action Check Module

1. Use a #2 phillips head screwdriver to remove tower screws

(A) from the second check seat (B) the double torsion

spring is captured (C) and does not to be retained

during maintenance.

2. After removing the tower screws (A) examine the elastomer

disk (D) and check seat (E) for fouling or damage.

3. Should elastomer disk (D) need replacement unscrew disk

retainer screws (F) and remove disk retainer (G). Carefully

remove and replace elastomer disk (D). When replacing

elastomer disk (D) be certain that no air, water or debris is

trapped in the clapper (H) cavity behind the elastomer disk (D).

4. Reverse the order of the above instructions to reassemble check.

• Elastomer disk must be flat in clapper (H) cavity before

tightening disk retainer screws (F).

• Do not cross thread disk retaining screws (F).

NOTICE Second Check Tower Bosses and Spring Arms Face Down

Orient seat protrusions as shown

Tower Bosses

Spring Arms

The diagram on the right shows the correct orientation of the

second dual-action check module when being re-attached to

the seat. In order to maintain the performance of the valve pay

attention to the proper orientation of the check module.

Installing Second Dual-action Check Module

1. Insert second check module (A) into access port (B) with second

check towers (C) pointing downstream. Push second check module

(A) downstream into valve sealing ring (D) until check O-ring (E) rests

against valve sealing ring (D). Push second check module (A) into its

fully seated position by hand.

2. Alternatively place 2"x4" piece of wood cut to 5" length (F) against

the backside of the second check seat ring (G). Using a 1"x4" piece

of wood cut to 16" length (H) as a lever between access port wall the

2"x4" (F) gently move the second check module (A) into its fully

seated position.

3. Be certain second check module (A) is fully seated and check O-ring

(E) is NOT “fish mouthed” or damaged.

4. Tighten the second check retaining screws (I) ONLY AFTER the first

check module (A) as been installed.

The second check module must be fully seated to ensure

retainer screws do not bind against check seat. Binding

retainer screws against check seat will result in permanent

damage to second check modules.

WARNING

FLOW

Not BindingBinding

Installing First Dual-action Check Module

1. Insert first check module (A) into access port (B) with first check

towers (C) pointing downstream. Push first check module (A)

upstream into valve sealing ring (D) until check O-ring (E) is

resting against valve sealing ring (D). Push first check module

(A) into its fully seated position by hand.

2. Alternatively, using a piece of 1"x4" wood cut to 16" length

(F) as a lever between the second check seat (G) and the first

check towers (C), push the first check module (A) into its fully

seated position.

3. Be certain first check module (A) is fully seated and check

O-ring (E) is NOT “fish mouthed” or damaged.

4. Now fully tighten the first and second check retaining screws (I).

The ﬁrst check module must be fully seated to ensure

retainer screws do not bind against check towers. Binding

retainer screws against check towers will result in permanent

damage to ﬁrst check modules.

WARNING

FLOW

Not BindingBinding

NOTICE

Typically, when a RP device is leaking from the relief valve, a fouled

or damaged first check valve is the cause. Make sure the first check

valve is functioning properly before assuming there is a problem with

the relief valve. If the first check is found to be functioning properly,

we recommend cleaning the relief valve piston (B) and seat (C). Use

a toothbrush (A) to gently brush away any debris on the relief valve

piston (B) or seat (C) that may be preventing the piston (B) from seal-

ing properly against the seat (C). This should return the relief valve to

proper working order without disassembly or the use of a repair kit.

Maintenance of Relief Valve

1. Using a 5/8" box wrench disconnect the relief valve sensing

line from the valve body (A).

2. To remove the relief valve from the valve body disconnect

the two relief valve mounting bolts (B) using a 9/16" wrench.

When removing the relief valve be sure not to drop the top

O-ring (C) as the relief valve body uses this O-ring to seal

against the valve body.

3. To access the relief valve remove the relief valve cover using

two 7/16" wrenches to remove cover bolts (D).

4. Remove the relief valve diaphragm (E) and check the

diaphragm for tears, holes or debris (F).

NOTICE

If one is certain that the relief valve requires maintenance proceed as follows.

Maintenance of Relief Valve (continued)

1. Check the rubber seal on the relief valve piston assembly (A) for

fouling or damage by making sure the indentation of the seat in

the rubber seal is present all the way around. (Confirm the relief

valve piston assembly (A) sets flush on relief valve seat (B).

2. Check relief valve seat (B) for fouling or damage before

reinstalling the relief valve piston assembly (A).

3. Once the relief valve is ready to be reassembled, the first step is

to reform and reattach the diaphragm to the piston.

4. Move the diagram (C) to the fully open position making sure the

embossed center is facing up.

5. While holding the diaphragm (C) with both hands, use your

thumbs to gently push down on embossed center (D) so the

diaphragm collapses into itself and forms a circle so that the

bottom of the piston assembly can be inserted into the

diaphragm and the embossed center can be pushed into

the piston assembly groove.

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