Condec DLR3110 - Manual (Page 48)

44 DLR3110 Rack Mount Digital Pressure Calibrator Manual
7.2.8 ORION-2C Manifold - Valve Adjustment Procedure
For DLR3110 models 2500 PSI and below.
ORION- 2C: Refer to Section 7.3 on page 53 and Figure 7-1 on page 55.
Tools required: hex wrench (.050")
hex wrench (.061")
SNOOP, leak gas detector (PN 64781)
NOTE: * Denotes reference to Figure 3-1 on page 9 .
1. If not already done, remove the ORION Input and Vent Valve Knobs (3) using the .061" hex wrench.
2. Energize the unit and let warm up. To adjust Input Valve, go to step 4.
3. Using a .050" hex wrench, loosen the Set Screw (34) on the Locknut (2) and turn the Locknut clockwise
to its stop.
4. Check to see that the Knob Insert (4) is securely fastened to the Valve Shaft (11). If it is loose, re-tighten
the Set Screws (23) with the .061" hex wrench.
5. Close the Input Valve by turning the Knob Insert (4) clockwise. until you feel the valve needle seat on the
O-ring (valve is now in closed position).
6. Rotate gears on both Isolation valves, counter-clockwise until they stop, then rotate clockwise 1/2 turn
(opening isolation valves).
7. Use the Pressure Limit Control (*4), to increase the supply pressure to between 80% and 100% of full
scale.
8. GAGE Model: Open the Vent Valve (*2) to atmosphere (rotate counter-clockwise), zero the indicator, by
momentarily pressing ZERO switch (*3), then close the Vent Valve (*2).
ABSOLUTE Model: Open the Vent Valve (*2) to atmosphere (rotate counter-clockwise), to release line
pressure, then close the Vent Valve (*2).
9. Slowly open the Input Valve by turning the Knob Insert (4) counter-clockwise until you notice the
displayed pressure increase. Then turn the Knob Insert slightly clockwise until the pressure stops rising.
10. Mark a radial line at the 12 o'clock position on the Knob Insert.
11. Turn the Knob Insert (4) clockwise to move the mark to the 6 o'clock position.
12. Turn the Locknut (2) counter-clockwise until it contacts the bottom of the stop washer. Tighten the Set
Screw (34) on the Locknut with the .050" hex wrench.
13. Install the Input Valve Knob (3) on the Knob Insert (4) and engage its Gear (5) with the smaller Isolation
Valve Gear (6). Turn the knob clockwise until the Isolation Valve is slightly snug.
Do not use excessive torque when tightening isolation valve. Doing so can damage the seat.
14. Remove the Input Valve Knob. Align the Set Screws (25) with the indentations on the Knob Insert. Install
the Knob on the Knob Insert while engaging the Knob Gear (5) with the Isolation Valve Gear (6).
15. Tighten the Set Screws (25) with the .061" hex wrench. The Input Valve is now adjusted.
16. To adjust the Vent Valve, follow steps 3 and 4.
17. Close the Input Valve by turning the Input knob (*1) clockwise.
18. Close the Vent Valve Knob Insert (4) clockwise until slightly snug.
19. With the supply pressure at 100% of full scale, open the Input Valve until the indicated pressure
stabilizes and then close the Input Valve.
20. Slowly turn the Vent Valve Knob Insert (4) counter-clockwise until the display starts to decrease, then
turn the Knob Insert (4) slightly clockwise until the indicated pressure stops decreasing.
21. Follow steps 10 through 15 replacing the term "Input Valve" with "Vent Valve". The Vent Valve is now
adjusted.
Caution