Ames Fire & Waterworks 5000CIV Cast Iron Reduced Pressure Detector Assemblies - Manual (Page 5)

5
Servicing First and Second Checks
Sizes: 2 1 ⁄
2
" – 10" (65-250mm)**
CAUTION !
1. Remove the hatch cover bolts. The 5000CIV is designed so that
when the bolts are backed off 1 ⁄
2
", all the spring load is re leased
from the cover and retained by the check module. Be sure to
verify this before removing all the bolts.
2. Lift the check valve module straight out taking care not to hit and
damage the seating.
3. The seat ring may be removed and replaced by:
Sizes 4" – 10" (100-250mm)** pulling out the two wire retainers.
Sizes 2 1 ⁄
2
" – 3" (65-80mm)** twisting one quarter-turn removes
the seat.
The wire retainers are 10" long. One is drawn out clockwise and
the other is drawn out counterclockwise.
4. The seat ring can be lifted straight up and removed.
5. To replace the disc on sizes 2
1 ⁄
2
" – 4" (65-100mm)** simply
remove the re tain ing nut or for sizes 6" – 10" (150-250mm)**
remove the allen head socket screws. Reverse this procedure to
install the new disc.
*Disc & Spring
As sem bly
seat
seat O-ring
Cover O-ring
2 1 ⁄
2
" – 3" (65-80mm)**
*Disc & Spring
As sem bly
Retainer wire
seat O-ring
Cover O-ring
4" – 10" (100-250mm)**
lower stem
O-ring (6" only) seat
disc
For further details contact your tech ni cal sales representative.
No special tools
required to service
First and second checks
are not interchangeable
First
Check
second
Check Relief
Valve
WARNING !
*Spring as sem bly is factory assembled. DO NOT DIS AS SEM BLE
** Metric Dimensions are nominal pipe diameter. This product is
produced with ASME/ANSI flanged end connections.