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SECTION 22—TIMING
Part No 1110538 85 Platinum™Series
SECTION 22—TIMING
Timing the Platinum 5, XL, and 10 Concentrators
ƽ DANGER
To prevent electrical shock, ALWAYS disconnect concentrator from electrical
outlet before servicing.
Use extreme care when making adjustments to the timing switch. DO NOT allow
screwdriver or your hands to contact the P.C. Board when unit is plugged in and/or
on. Turn unit off and unplug before adjusting timing switch. Electrical shock is
possible.
To accommodate the varying tolerances when replacing components, an adjustable timer
is used to control the shift time of the pressure equalization (P.E.) valve. The SensO
2
board
allows for automatic (microprocessor controlled) adjustments of the P.E. shift times. Non-
SensO
2
boards allow for manual adjustment.
Autotuning
NOTE: For this procedure, refer to FIGURE 22.1.
1. Turn power off ( ) and unplug the unit.
2. Remove cabinet. Refer to Removing Cabinet on page 25.
3. Plug the unit in and turn the power on ( ) .
4. Wait for the main valve shift to indicate one of the following:
• If the board is new, the front panel RED indicator light will slowly blink, indicating
autotune has initiated.
• If the board is used and has performed autotuning before, press and release the
small push button switch near the pressure sensor.
• The front panel RED indicator light will slowly blink, indicating the unit is
autotuning and automatically adjusting the P.E. valve timing.
5. Set the output flow to 5.0 L/min. for 5 liter models and 10 L/min. for 10 liter model
during autotuning.
6. The GREEN (onboard) diagnostic light will flash the current value of the P.E. valve
timing number.
7. Place the cover back on the unit but DO NOT install the cover screws. Let the unit run
until autotuning is completed.
8. When autotuning is complete, the RED front panel indicator light will change from a
slow blinking to a flashing of the final P.E. valve timing number.
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