WARNING
Before removing a regulator from the system for
service, you must
•
depressurize system
•
purge the system to remove any residual
system media left in the regulator
.
Disassembly
1. Place the regulator in a vise.
2. Turn the
handle
counterclockwise until it stops.
Note: If using an antitamper nut, remove it from the body.
Then turn the stem counterclockwise until it stops.
3. Loosen the
cap ring
.
4. Remove the
cap assembly
and handle as one piece and set
aside for later use.
Note: The
range spring
may fall from the
cap assembly
when lifted. Set aside for later use.
5. Remove the
diaphragm
and the
stop plate
from the
body
.
Set stop plate aside for later use.
NOTICE
Do not damage the diaphragm sealing surface on
the body. Leakage could result.
Cap ring
Handle
Large cap ring spanner
44
Diaphragm
Stop plate
Body
6. Use the
seat retainer spanner
to loosen and remove the
seat assembly
. Discard the
seat retainer
and the
seat
.
7. Invert the body and remove and discard the
poppet
, the
spring retainer,
the
poppet spring
and the
poppet seal
retainer
.
8. Thread the
seal extraction tool
into the
body
and remove
the
poppet seal and spring
.
9. Remove the
inlet
filter
from the
inlet
(marked ‘HP’) of the
body
using the
filter pick tool
. Discard old filter.
NOTICE
Be careful not to scratch the sides of the inlet
port. Leakage could result.
Poppet
Spring retainer
Poppet seal
retainer
Poppet spring
Body
Seal extraction tool
Poppet seal and spring
Seat retainer
Seat
Body
Seat retainer spanner
Cap assembly
Range spring
HP
Inlet
Filter pick tool
Discard
inlet filter.