44-6800 Series
DOPSM2019X012
8
All Rights Reserved.
June 2019
ELECTRIC
(SHOWN
WITH
OPTIONAL LED
DISPLAY)
WARNING
To avoid personal injury, property damage or
equipment damage caused by sudden release of
pressure or explosion of accumulated gas, do not
attempt any maintenance or disassembly without
first isolating the regulator from system pressure
and relieving all internal pressure from the regulator.
To avoid personal injury, electrical power must be
turned off and locked out prior to attempting any
maintenance or disassembly.
Mechanical Disassembly
Bold letters within the steps indicate component location in
Figure 6.
The following steps outline the disassembly of pressure
reducing regulators for maintenance and repair:
a. Clamp the regulator in a vise by the side of the
regulator body
K
.
b. Turn adjusting screw
A
counterclockwise to insure
removal of all spring force on the diaphragm.
c. Remove upper portion of regulator bonnet
B
.
NOTE: Upper portion of regulator includes spring
button
C
, load spring
D
, back-up plate
E
, and
diaphragm
F
. Review correct drawing to ensure that
all parts have been disassembled.
d. The valve parts can now be removed from the regulator
body by turning the seat retainer
G
counterclockwise
until it is free of the regulator body.
Mechanical Reassembly
The regulator is reassembled in the reverse order of
disassembly, observing the following precautions. Please
reference the Bill of Material and Assembly Drawing for
the correct location of replacement parts and correct torque
specifications.
a. Inspect all parts and replace those worn or damaged
with TESCOM replacement parts.
b. All parts should be cleaned to the cleanliness level
required for safe operation with the media and system
they will be used in. All parts in the flow stream
must be free of particles which could prevent proper
seating of the main valve
J
.
c. Apply a thin uniform coating of fluorocarbon grease
to the following parts: Indentation of spring button
C
,
threaded portion of adjusting screw
A
, entire threaded
areas of the spring bonnet
B
and heat exchanger
housing
N
.
Figure 1
