Condec UPS3000, Installation, Operation & Maintenance Manual

Page: 41 / 94

Maintenance & Service 37
4.2.12 Pressure Limit Control (Tescom), Regulator Removal
Tools required: Phillips screwdriver
7/16" Open end wrench
9/16" Open end wrench
A/R 1/4" wide Teflon tape, (PN's 60575)
A/R 1/2" wide Teflon tape, (PN's 60911)
1/2" Socket
Socket wrench
1/4" Hex wrench
Flat blade screwdriver (small)
Channel locks
NOTE: See Figure 4-1 on page 49.
1. Remove cover from its enclosure as described in Section 4.2.1 on page 28, and carefully place on a
bench top.
2. Remove regulator knob cap by prying off with small screwdriver.
3. Loosen and remove the locknut using a 1/2" socket while holding the knob. Remove the knob by turning
counter-clockwise
4. Remove all tubing sections that connect to the regulator inlet and outlet fittings.
5. Loosen and remove the panel mounting nut using channel locks.
6. Remove the regulator by sliding out from the panel rear.
7. Mount the regulator in a bench vise by the flats in the base.
8. Note the orientation of the inlet and outlet fittings in the regulator. Remove the fittings and any remnants
of Teflon tape from the pipe threads.
4.2.13 Pressure Limit Control (Tescom), Regulator Installation
Tools required: Phillips screwdriver
7/16" Open end wrench
9/16" Open end wrench
1/2" Socket
Socket wrench
A/R 1/4" wide Teflon tape, (PN's 60575)
A/R 1/2" wide Teflon tape, (PN's 60911)
Snoop, liquid leak gas detector (PN 64781)
NOTE: See Figure 4-1 on page 49. Call CONDEC for replacement Part No.’s.
1. Wrap two layers of Teflon tape on the pipe threads of each fitting and install into the inlet and outlet of
the regulator and ensure that each is oriented properly. Use a bench vise when doing this.
2. Insert the new regulator into the panel through hole. Thread the large mounting nut onto the body from
the panel front.
3. Install the tubing sections to the inlet and outlet fittings.
4. Install the regulator knob on the threaded shaft by turning clockwise, until it sits just low enough to allow
locknut to be placed on threaded shaft. Hold knob in position and install the locknut.
5. Close Pressure Limit Monitor, by turning regulator knob counter-clockwise.
6. Using a pressure source set input pressure to approximately 100% of Full Scale rating of UPS3110 and
check all fittings for leaks.
7. Install cover on its enclosure as described in Section 4.2.1 on page 28.
8. Energize the unit and let warm up. Turn Range Select switch to highest range.
9. Close the Input Valve by turning the
INPUT
knob clockwise.
10. Turn the regulator knob clockwise until reaching between 5% to 10% of Full Scale, but not enough to
disturb pressure relief valve.