Condec DLR3110 - Manual (Page 51)

Maintenance and Service 47
7.2.12 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 60575)
A/R 1/2" wide Teflon tape, (PN 60911)
1/2" socket
socket wrench
1/4" hex wrench
flat blade screwdriver (small)
channel locks
NOTE: See Figure 7-3 on page 61.
1. Remove cover from its chassis as described in Section 7.2.1 on page 39, and carefully place on a bench.
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.
7.2.13 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 60575)
A/R 1/2" wide Teflon tape, (PN 60911)
SNOOP, liquid leak gas detector (PN 64781)
NOTE: See Figure 7-3 on page 61. Call CONDEC for replacement Part Numbers.
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 DLR3110 and
check all fittings for leaks.
7. Install panel/chassis assembly in its enclosure as described in Section 7.2.1 on page 39.
8. Energize the unit and let warm up.
9. Close the Input Valve by turning the Input knob clockwise.
10. Turn the regulator knob clockwise until reaching between 5% – 10% of full scale, but not enough to
disturb pressure relief valve.
NOTE: If pressure cannot be attained loosen locknut on shaft, rotate knob a few turns counter-clockwise,
retighten locknut. If you hear the pressure relief valve then rotate regulator knob counter-clockwise until relief
valve shuts off.
11. Remove locknut from threaded shaft, and rotate knob counter-clockwise until bottoming out on large
locknut. After touching large locknut rotate knob clockwise 1/8 turn. Hold knob in position, install and
tighten the locknut with 40 – 50 in-lbs. of torque using a 1/2" socket.