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(e) Accessories
(i) Batteries
The comppac ventilator is designed to operate from the NiCad rechargeable version of a
widely stocked military 24V battery which was originally introduced to power the
“Clansman” communications pack; NATO No. 6140 - 99 - 620 - 8057. It is packaged in either
a plastic or metal casing but the comppac ventilator only accepts the plastic casing - there
are wider fixing lugs on the metal casing.
The Ni-Cad battery has an 85ºC internal thermal cut out.
WARNING: To avoid malfunction of the ventilator when using the battery as a power
source, periodically check the battery to ensure that there is sufficient charge to
power the ventilator. The battery may be trickle or fast charged using the PS11
power supply/charger unit (see section 2e) iii), however, this should be undertaken
in advance of use and, where necessary (ie: battery does not retain its charge), the
battery may need replacing.
This battery needs to be recharged within a month before use. Battery life will depend on
ventilator settings, the table below shows typical battery duration for given settings:
The batteries are field exchangeable.
CAUTION: It is recommended that the comppac ventilator is only used with a battery
installed, even if the ventilator is being powered by gas only, as the battery is used to
power the electronic alarm system. The ventilator will work without a battery or external
electrical supply, since it operates as a conventional gas powered device with the patient
protection devices and the high inflation pressure pneumatic alarm operating normally.
However, the user must be aware that in these circumstances, the electrically operated
alarms will NOT function.
(ii) Power Supply/Charger
WARNING: To avoid the potential risk of explosion associated with re charging the
Lithium version of battery, ensure that only a Ni Cad battery (Part No: 510-A1490/CE,
NATO No: 6140-99-620-8057) is installed. UNDER NO CIRCUMSTANCES SHOULD THE
LITHIUM BATTERY (NATO No: 6135-99-840-0109), OR ANY OTHER PRIMARY
BATTERY BE FITTED.
The Pneupac PS11 Mains Power Supply/Charging Unit is specially designed for use with
the comppac ventilator. Its 6 pin input socket will accept leads for connection to supplies
of 200/250V 50Hz, 100/120V 60Hz or 24/28V d.c. respectively. Each lead is wired to
connect to a different pair of pins.
The PS11/ comppac supply cable assembly (510A2421) connects between the 4-pin
socket on the power supply output and the Auxiliary Electrical Supply connector on the
panel of the comppac ventilator.
WARNING: To avoid the risk of fire or explosion or impaired ventilator performance,
always observe the correct polarity of the auxiliary supply. Ensure the supply is a
stable voltage of between 23 to 30 Volts capable of supplying 3 Amps (5 Amp surge
on motor start) and does not contain excessive interference.
When switched to ‘On & Trickle Chg’ the PS11 power supply provides the correct voltage
and current to drive the ventilator through one of the circuits and to simultaneously
trickle charge the internal battery through a second circuit. This trickle charging will
provide about 8 minutes running time for every hour of charging.
When the power supply is switched to the ‘Fast Charge’ position it will only energise the
third, fast charging, circuit. In this mode the rate of charge is increased by about 4 times
such that the internal battery will become fully charged in 4-5 hours. Fast charging will
only take place when the ‘On/Off’ switch on the panel of the ventilator is in the ‘Off’
position.
NOTE: Charging light may trip out due to type of battery and therefore may not
necessarily mean the battery is fully charged. It is best to trickle charge for longer peiords.
Alternatively, if the battery charging lead (510A2422) is connected to the output socket of
the power supply it can be used to fast charge a spare battery directly – outside the
ventilator.
Plug-in supply leads can be supplied to suit most mains outlet sockets used World-wide.
CAUTION: To avoid accidental disconnection of the power supply unit (PS11) when it is
connected to the comppac OEM unit, the mains lead should always be locked in position.
CAUTION: Avoid fast charging batteries outside the temperature range of +10ºC to +30ºC.
The batteries will not accept a full charge outside this range and, in certain circumstances,
the capacity of the battery may be permanently impaired. At low temperature, the
electrolyte may be electrolysed, and small quantities of hydrogen liberated, which in
extreme circumstances present an explosive risk.
An auxiliary power supply lead, part number 510A2582, is available from Smiths Medical
International Ltd. to which the user can fit specific connectors to suit alternative 24/28V
d.c. power supplies. This lead has only a single circuit so simultaneous battery charging
will not occur with its use.
(iii) NBC Filter
WARNING: When in use in a contaminated atmosphere, to avoid the risk of harm to
the patient, the NBC filter must be fitted.
The comppac ventilator is designed to accept any NBC filter with a NATO Stanag 4155