IX. MAINTENANCE AND SERVICE- cont.
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- PREVENTATIVE MAINTENANCE
PREVENTATIVE MAINTENANCE PREVENTATIVE MAINTENANCE
PREVENTATIVE MAINTENANCE
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- RECOMMENDED MAINTENANCE SCHEDULE
RECOMMENDED MAINTENANCE SCHEDULE RECOMMENDED MAINTENANCE SCHEDULE
RECOMMENDED MAINTENANCE SCHEDULE
Periodic preventive maintenance should be performed to insure continued proper operation of the
CROSSVENT-3+ Ventilator. The frequency of preventative maintenance is determined by many factors,
some of which are:
• Frequency & length of use
• Quality of the compressed gas source(s)
• Environmental conditions
TIMELINE
TIMELINETIMELINE
TIMELINE
The following is a list of routine maintenance procedures and maintenance schedule.
Interval Recommended Procedures
Prior to each use Check battery condition
Periodic Performance Check
Annual Verify Calibration
Every 2 years
Major overhaul, cleaning and calibration
Battery replacement*
Recommend return to factory for this service
Every 6 years Replace PC Board
*Replace only with batteries supplied by Bio-Med Devices, part # PRT4467. Do not substitute.
Note: Prior to disposal of any component, with particular attention to the battery and PCB, check with your
local controlling authority for disposal regulations.
GAS INLET FILTER
GAS INLET FILTERGAS INLET FILTER
GAS INLET FILTER
The filter element should be replaced during major overhauls or whenever it becomes clogged. The gas
supply filter is in the supply inlet fitting (DISS O
2
Input) and is in every unit. If the unit has air entrainment,
then there is an additional filter in the entrainment inlet located in the back of the unit. Both filters should
be replaced at the same time.
BATTERY CHECK
BATTERY CHECKBATTERY CHECK
BATTERY CHECK
The battery has an internal thermal fuse. This fuse will open if it gets hot due to excessive current flow or
if the battery itself becomes too hot. It will recover when the cause is eliminated. If the fuse is suspect,
check for voltage across the red and black wires coming from the battery. If the battery is hot and no
voltage is present, allow it to cool and check again. If there is no voltage and it won’t take a charge, but
the charging circuit is good, replace the battery.
The battery should be checked before each use.
To check:
Turn on the Crossvent and remove the external power supply connector. The ventilator should continue to
operate correctly. The Power Source key should display "BATT" and the audible alarm should sound.
Pressing the Power Source key should permanently silence the audible alarm. Restoring the external power
should cause the Power Source key to show "EXTERNL". If a battery operation alarm does not sound
when AC power is lost or if the unit fails to operate on battery, the unit should be removed from service and
tested.
One minute after turn-on observe the battery bar gauge. If the bar gauge originally showed 100% and now
shows less than 75% charge remaining, put the CROSSVENT on charge. Recheck in 6 hrs. If the battery
condition has not improved, remove the unit and power supply from service until the problem is identified
and corrected.
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-PREVENTIVE MAINTENANCE PARTS KITS
PREVENTIVE MAINTENANCE PARTS KITSPREVENTIVE MAINTENANCE PARTS KITS
PREVENTIVE MAINTENANCE PARTS KITS
If your Crossvent has:
Part Number
Flow Sensor Entrainment
PRT3348 NO NO
PRT3350 NO YES
PRT3353 YES NO
PRT3354 YES YES
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