Section 2— operating instructions, M warning, Do not operate unit without filter – Invacare IRC 1705 User Manual
Page 16: Setup, Caution, Ƽ warning

SECTION 2—OPERATING INSTRUCTIONS
16
SECTION 2—OPERATING
INSTRUCTIONS
ƽ WARNING
DO NOT operate unit without filter.
Avoid operating this product in a dusty environment.
Otherwise, premature compressor wear could occur.
NOTE: Clean and disinfect the nebulizer and mouthpiece before
using the device for the first time. Refer to Cleaning and
Disinfecting on page 20.
Setup
NOTE: For this procedure, refer to FIGURE 2.1 on page 17.
1. Place the unit on a table or other flat, stable surface. Be sure
you can easily reach the controls when you are seated.
CAUTION
Make sure the power switch is in the off “O” position.
2. Gently twist the nebulizer to separate it into two sections.