Chapter 4
4-2 BiPAP Focus Ventilator Service Manual © Respironics, Inc. REF 1029568 Rev B
Periodic Maintenance
4.2 Cleaning the
Reusable Air Inlet
Filter
Follow these steps to clean the reusable air inlet filter (Figure 4-1):
1. Open the filter door and remove the filter. Inspect for damage or
debris.
2. Wash the filter using one of these solutions, then rinse thoroughly:
•Palmolive
®
or Dawn
®
dishwashing detergent
• White distilled vinegar (5% acidicy)
• Isopropyl alcohol (99.9%)
• Hydrogen peroxide (3%)
• Clorox Ultra
®
Bleach
• Sodium hypochloride (6%)
3. Allow the filter to dry completely before reinstalling.
Figure 4-1: Reusable Air Inlet Filter
WARNING: Failure to replace a dirty filter may cause the device to operate at higher than
normal temperatures and damage the device.
CAUTION: Use only Respironics-approved filters.
CAUTION: The gray reusable air inlet filter must be completely dry before use. Never
place a wet filter into the device.
4.3 Replacing Air
Inlet Filter(s)
The ventilator is designed to accommodate 1 reusable (gray) filter and 1
disposable (white) filter at one time. The disposable filter is optional but
recommended for ultra-fine particulate filtration.
CAUTION: Replace the reusable air inlet filter every year or if damage is visible.
Install only 1 reusable filter.
CAUTION: Replace the disposable air inlet filter if debris or damage is visible. Do not
attempt to clean or reuse.
Filter door
Reusable air
inlet filter
(gray)