AMES Maxim M200 Series Installation, Service, Repair Kits, Maintenance - Page 2

Browse online or download pdf Installation, Service, Repair Kits, Maintenance for Control Unit AMES Maxim M200 Series. AMES Maxim M200 Series 4 pages. Double check valve/detector assemblies, sizes 2 1/2"-10" 65-250 mm

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Basic Installation Instructions

Guidelines

Most field problems occur because dirt and debris present in the system at the time

of installation becomes trapped in the check valves. The system should be

flushed before the valve is installed. If the system is not flushed until after the

valve is installed, remove both check modules from the valve and open the inlet

shutoff to allow water to flow for a sufficient time to flush debris from the water line.

If debris in the water system continues to cause fouling, a strainer can be installed

upstream of the backflow assembly.

The Series M200/M300 may be installed in either horizontal or vertical position as

long as the backflow assembly is installed in accordance with the direction of the

flow arrow on the assembly and the local water authority approves the installation.

The assembly should be installed with adequate clearance around the valve to allow

for inspection, testing and servicing. 12" (305mm) should be the minimum clearance

between the lower portion of the assembly and the floor or grade.

Maintenance Instructions 2

Figure A

Figure D

Instructions

Prior to servicing any Ames valve, it is mandatory to shut

down the water system by closing both the inlet and outlet

shutoff valves. After shutoff valves are closed, open test cock

#2, #3 & #4 to relieve pressure within the backflow assembly.

After #3 test cock has been opened to relieve pressure,

remove #3 test cock from housing. (Figure A)

Slowly slide the cover sleeve to the downstream side of the

housing. (Figure B)

Remove the stainless steel check retainer from the housing.

(Figure B)

Remove the #1 check module (Figure C) by inserting two

flat blade screwdrivers into the slots on either side of the

check module and gently pry to check module toward the

open zone.

Remove #2 check module with the same instructions as in

#4 above.

" – 4" (65 – 100mm)

Figure B

Figure E

To clean or inspect either check module, insert a #3 screw-

driver through the downstream side of the check module as

shown in Figure D & E. When the screwdriver is in place,

remove the "E"-clip (Figure F) and pin connecting the structural

members and the check clapper will open with no tension.

Thoroughly clean the seating area. The sealing disc may be

removed, if necessary, by removing the screws connecting

the keeper plate to the clapper. The sealing disc may be

reversed and reinstalled if the elastomer is cut or damaged.

Wash check module and O-ring and inspect for any dam-

age. If damaged, reinstall new parts.

After thorough cleaning, lubricate O-ring w/FDA approved

lubricant, replace pin and "E"-clip in structural members,

remove screw driver and reinstall check modules and

assemble housing in reverse order of these instructions.

Horizontal Installation

Vertical

Installation

Figure C

Figure F