Adjusting Regulator - Invacare Perfecto 2 Series Service Manual

Adjusting Regulator

NOTE: For this procedure, refer to FIGURE 11.1 on page 50.
1. Turn unit on ( ).
2. Install pressure gauge onto oxygen outlet.
NOTE: Use a 0 - 30 p.s.i. pressure gauge.
NOTE: Check O pressure at oxygen outlet. It should read a steady five p.s.i. ± 0.5 p.s.i. If pressure
2
is not in specification, proceed to STEP 3. If pressure falls within specification, no adjustment is
needed.
3. Unplug unit.
4. Remove cabinet. Refer to Removing Cabinet on page 23.
5. Plug unit in and turn power switch on ( ).
6. Using the access hole located on the control panel, locate the pressure adjustment
screw in center of pressure regulator top.
7. Perform one of the following:
A. Regulators before 07/01/12 (Sensored) or 09/01/12 (Non-Sensored) - Insert a 5/32-
inch Allen wrench into the pressure adjustment screw.
B. Regulators after 06/30/12 (Sensored) or 08/31/12 (Non-Sensored) - Insert a 3/32 (2.5
mm) Allen wrench into the pressure adjustment screw.
8. While reading pressure gauge, do one of the following:
• Turn pressure adjustment screw clockwise to increase output pressure; or
• Turn pressure adjustment screw counterclockwise to decrease output pressure.
9. Adjust until pressure reads a steady five p.s.i. ± 0.5 p.s.i.
10. Allow the concentrator to run for ten minutes.
11. Retest the pressure by performing STEPS 6-9, to ensure proper operation.
12. Once required pressure is achieved, reinstall cabinet. Refer to Removing Cabinet on
page 23.
13. Refer to Troubleshooting on page 16 if you are unable to adjust or maintain five p.s.i.
± 0.5 p.s.i.
Part No 1148070
SECTION 11—REGULATOR
51
™
Perfecto
2