Maxtec MaxBlend 2 - Page 21

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Problem: Pressure differential alarm sounding
Potential Causes and Solutions:
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Inlet pressure differences of 20 PSI or more. Correct pressure difference.
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Pressure alarm not calibrated properly. Contact Maxtec for repair.
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MAXBlend2 blender operation out of calibration. Contact Maxtec for repair.
Problem: Inlet pressure has supply loss, no audible pressure differential alarm.
Potential Causes and Solutions:
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Reed alarm cap damaged or defective. Contact Maxtec for repair.
Problem: Selected oxygen concentration accurate only when gas pressures are equal.
Potential Causes and Solutions:
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MAXBlend2 balance module not functioning properly. Contact Maxtec for repair.
Problem: Blank display.
Potential Causes and Solutions:
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Battery not installed. Install batteries. Refer to section 2.1.1.
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Battery completely dead. Replace batteries. Refer to section 2.1.1.
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Monitor defective. Contact Maxtec for repair.
Problem: Partial or distorted display.
Potential Causes and Solutions:
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Monitor damaged. Contact Maxtec for repair.
Problem: Sensor will not calibrate.
Potential Causes and Solutions:
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Sensor cell exhausted. Replace sensor. Refer to section 6.2.
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Sensor cable defective. Return to Maxtec.
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Monitor defective. Contact Maxtec for repair.
Problem: Sensor will calibrate, but takes too long to return to 21% ±2%
oxygen in air (2 to 5 minutes) when performing calibration.
Potential Causes and Solutions:
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Disposable oxygen sensor damaged or defective. Replace sensor. Refer to section 6.2.
Problem: Sensor will calibrate, but does not return to 21% ±2% oxygen in air
(2 to 5 minutes) when performing calibration.
Potential Causes and Solutions:
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Disposable oxygen sensor damaged or defective. Replace sensor. Refer to section 6.2
Problem: Sensor will calibrate, but reading at any constant level drifts more
than ±3% over a 24 hour period.
Potential Causes and Solutions:
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Barometric pressure change since last calibration. Recalibrate.
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Room or gas temperature went below 59°F (15°C) or above 104°F (40°C). Correct
temperature and recalibrate.
Problem: Low battery icon.
Potential Causes and Solutions:
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If the low battery icon is displayed on the LCD readout at any time, the batteries
should be replaced as quickly as possible.