External Electrical Supply Connector; Charging Led & Battery - BIO-MED DEVICES CROSSVENT-3+ Operation & Service Manual

III. SPECIFICATIONS, CONNECTIONS & USER INTERFACE cont'd.
E X T E R N A L E L E C T R I C A L S U P P L Y C O N N E C T O R E X T E R N A L E L E C T R I C A L E X T E R N A L E L E C T R I C A L E X T E R N A L E L E C T R I C A L
This receptacle accepts the plug from the factory supplied, U.L. approved, power supply module. The plug
and receptacle are keyed so they will only go together when the red dot on the plug faces to the front of the
unit and the cord is within the two arms of the guard. By necessity, this power supply meets all the
specifications and standards listed in Section III, Part B. Use only Jerome Industries model WSZ116M
(16VDC, 3A) with the appropriate mating plug. The Crossvent should not be used with any other wall plug-
in or desktop AC adapter. This is used to operate the ventilator and to charge the battery whenever it is
below full charge. The wall plug-in power supply is furnished for 117 VAC, 60 Hz or 220 VAC, 50 Hz
operation, as required. It is not possible to overcharge the battery. Always keep the battery fully charged
when not in use.
CAUTION: Do NOT attempt to rotate the power connector while it is plugged into the
ventilator. It must only be pushed straight in and pulled straight out.
CAUTION: When using an AC power source, only the power supply provided with the
Crossvent is approved for use with this ventilator. Any other power supply may cause
damage and/or unreliable operation.
CAUTION: Any more comprehensive DC power supply than that which is supplied must
be short circuit protected and must comply with all of the specifications and standards as
listed in Section III, Part B.
CAUTION: When it is necessary to operate the Crossvent from an AC inverter, only
inverters in compliance with NEMA standards should be used (see Appendix F).
C H A R G I N G L E D & B A T T E R Y C H A R G I N G L E D & B A T T E
C H A R G I N G L E D & B A T T E C H A R G I N G L E D & B A T T E
The Charging LED indicates the charging mode when the external power supply is plugged into the
Crossvent. Its states are:
1. Slow Blinking (approximately once per second)- unit is in rapid charge mode.
2. Rapid Blinking- failure in the charging system or the temperature of the battery was above 125°F
(40°C) when the external power supply was connected.
3. On Steady- trickle charge mode.
The battery operation is approximately 6 hours on a fully charged battery. Turning off the backlight can
extend this time (refer to Backlight in Part D of this section).
To charge the battery, only the power supply provided by Bio-Med Devices should be used. With the red
dot on the supply's connector facing the front of the Crossvent, plug the external power supply into the side
of the unit and into an AC outlet. Charge the battery until the charging LED indicates it is in trickle charge
mode and the battery is fully charged (solid LED). The amount of time required to fully charge the battery
depends on many factors, including the state of charge when it begins. The maximum time for an exhausted
battery is approximately 5 hours. When done, verify battery power by unplugging the external power cord
from the side of the unit while it is turned on. The Crossvent should alarm and the power source key at the
bottom of the display should flash "BATT". Press this key to cancel this alarm. The battery bar indicating
the remaining battery power should span the entire battery key unless the battery was fully discharged, in
which case it may only indicate 90%. This condition will self-correct with further charging cycles.
If the temperature of the battery is over 125°F (51°C), it cannot accept a charge. This situation should be
avoided. If the battery reaches this temperature during a rapid charge, it will go into trickle charge mode
until it is below this temperature.
CAUTION: Do not allow the temperature of the battery to go above 131° F (55° C)
whether the unit is on or off as this may cause damage resulting in a shorter life expectancy
of the battery.
When the state of the battery is determined to be within approximately 20 minutes of remaining autonomous
operation, the Alarm 3 menu will flash "LOW BATTERY, CONNECT EXTERNAL POWER" and sound
the audible alarm. The ventilator should be switched to external power or removed from service and
recharged when this alarm occurs. If the battery is allowed to expend energy to a point below 6 volts (well
below the Low Battery alarm limit), the ventilator will shut down independent of the On/Off switch. If this
occurs, the external power supply must be used to recharge the battery and the On/Off switch must be
turned to Off and then back to On before the unit will operate.
NOTE: 20 minutes of operation after the low battery alarm assumes a properly maintained battery in good
condition.
The NiMH rechargeable battery is located internally and should only be accessed by trained service
personnel. To prolong life and maintain performance, it is recommended that the Crossvent be stored with
the power supply plugged in or with the battery fully charged at a relative humidity of 65% (±20%)
S U P P L Y C O N N E C T O R S U P P L Y C O N N E C T O R S U P P L Y C O N N E C T O R
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