9
44-6800 Series
DOPSM2019X012
All Rights Reserved.
June 2019
WARNING
WARNING
WARNING
Basic Assembly Drawing
Do not apply any type of grease to the internal parts
of the regulator that contact the process media. Do
NOT apply any type of grease to the inlet or outlet
connections.
d. Valve seat
H
must be installed with the chamfered side
towards the main valve.
e. The body
K
and bonnet are best joined by holding
the bonnet assembly open end up and dropping all
required items into place one at a time. The last item to
be placed in the bonnet will be the diaphragm
F
.
It can be centered on the seating surface of the bonnet
before the body assembly is inverted and screwed into
the bonnet firmly – hand tight. Regulator should then
be placed in a vise and the bonnet re-torqued to correct
specifications. See Assembly Drawing.
3.4.3 Electric Heater Function
The following procedures are provided to enable the customer
to perform all normal maintenance and repair operations.
These operations are more easily performed with the regulator
removed from the line.
An assembly drawing and bill of materials for the regulator and
heater will be needed to complete maintenance procedures.
The assembly drawing and bill of materials are separate from
this manual and available by contacting TESCOM (see last
page for TESCOM contact information).
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.
• Heater bonnet (N) joints are not to be repaired or
removed.
• For integral applications the electronics enclosure
must engage the regulator assembly by at least 5 full
threads made wrench tight.
• Seal required must be sealed within 450mm (18
inches) of enclosures.
• Wiring entering and existing this enclosure must be
suitable for 95°C or higher.
• Install circuit protection on input voltage to electrical
controls of the regulator and adhere to proper electrical
grounding practices per local and environment codes.
• If heater is not properly performing return to the
factory.
Figure 6
