AMES SILVER BULLET 3000SS Series Instruções de instalação - Página 4

Procurar online ou descarregar pdf Instruções de instalação para Unidade de controlo AMES SILVER BULLET 3000SS Series. AMES SILVER BULLET 3000SS Series 4 páginas. Double check valve, assemblies & double check detector assemblies

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Testing — Double Check Valve Assembly

Test Check Valve No. 1

Step 1: Ensure shutoff #1 is open, shutoff #2 is closed.

Step 2: Connect high side hose to test cock #3, low side to test cock

#2 and open both test cock #2 and test cock #3.

Step 3: Open valve C, then open A to bleed air from the high side.

Close valve A, then open B to bleed low side. Close valve B.

Step 4: Connect vent hose loosely to test cock #1. Open valve A to

vent air from vent hose. Tighten vent hose at test cock #1,

open test cock #1.

Step 5: Close shutoff #1. Slowly loosen hose at test cock #2 until differ-

ential gauge rises to 2psi and retighten hose. If the differential

reading does not decrease, record check valves as "tight".

Test Check Valve No. 2

Step 1: Move the high side hose to test cock #4, low side to test cock

#3 and open both test cock #3 and test cock #4. Remove vent

hose from test cock #1, open shutoff #1.

Step 2: Open valve C, then open valve A to bleed air from the high

side. Close valve A, then open valve B to bleed low side. Close

valve B.

Step 3: Connect vent hose loosely to test cock #1. Open valve A to

vent air from the vent hose. Tighten vent hose at test cock #1,

open test cock #1.

Step 4: Close shutoff #1, then slowly loosen hose at test cock #3 until

differential gauge rises to 2psi and retighten hose. If the

differential reading does not decrease, record check as tight.

Remove all hoses and restore valve to original working condition.

Note: The assembly will fail both the first and second check valve

tests above, if shutoff #2 leaks excessively. To test for a leaky #2

shutoff, use the following procedure.

Test for Leaky No. 2 Shutoff

Step 1: Connect the high side to test cock #1, low side to test cock #4.

Open test cock #1 and test cock #4. Close shutoffs #1 and #2.

Step 2: Close valve C. Open valve A, then open valve B

hose at test cock #4 to remove air. Retighten hose.

Step 3: If the differential gauge rises above 0, there is excessive

leakage at shutoff #2 and it must be replaced to test the

assembly.

Note: Product information is subject to change without notice and

supersedes all previous publications.

A Division of Watts Water Technologies, Inc.

1427 North Market Blvd. • Suite #9 • Sacramento, CA 95834 • Phone: 916-928-0123 • Fax: 916-928-9333

RP/IS-A-2000SS/SE&3000SS/SE 0314

Vent Hose

⁄

turn, loosen

Test Cock

No. 1

EDP# 7016811

Ball Type Test Valves

(A)

(C)

(B)

Needle

Valve

(Blue)

High Hose

(Yellow)

Low Hose

(White or Red)

Test Cock

No. 3

Test Cock

No. 2

www.amesfirewater.com

No. 4