Invacare MA55 Owners Manual - Page 23

5.1.3 Adjusting the Minimum Pressure Setting (A/P Low) The minimum pressure setting during Alternating Pressure is set to 0 (8±4 mmHg) at the factory. This means that the mattress will deflate as much as possible during the deflation time when using 5, 10, 15 or 20 minute Alternating Pressure times. The setting can be changed so the mattress will only deflate to 25%, 50%, 75% of the selected pressure setting. 1. Ensure the Standby LED is lit. 2. Perform one of the following: • MA50 and MA51 - Press and hold the Max Inflate C and Fowler buttons D. • MA55 - Press and hold the Mode and Fowler buttons. 3. Read the LCD Display E. The LCD Display will flash: • 0 if the current setting is 0 (8±4 mmHg). • 2 if the current setting is 25% of the selected pressure. • 5 if the current setting is 50% of the selected pressure. • 7 if the current setting is 75% of the selected pressure. 4. Press the Static/Alternating Pressure button to toggle between the four settings. 5. Press the Power button to save the setting. Usage 5.1.4 Firm/Soft Buttons 1. Select comfort pressure settings by pressing Firm F or Soft G button. • Soft Button - Pressing this button reduces the pressure setting in the mattress • Firm Button - Pressing this button increase the pressure setting in the mattress The patient comfort pressure ranges from Soft (level 0 = 8 ±4 mmHg) to Firm (level 9 = 32 ±4 mmHg). The Comfort Control LED displays the patient comfort pressure levels from 0 to 9 and provides a guide to the caregiver to set approximate comfort pressure level depending on the patient weight. If the patient's weight to height ratio is above average, increase the pressure setting by approximately 20%. 5.1.5 Fowler Button 1. Press the Fowler button D to activate the patient fowler mode. The Fowler LED illuminates when in this mode. When this mode is activated, the control unit increases the pressure in the mattress to prevent the patient from bottoming out. 1148136-G 23