This paragraph discusses other major components within the suction system not
dealt with above.
a. Collection Jar System. Always use an overflow-trap bottle to protect the
suction mechanism from overflows which may permanently damage the vacuum pump.
Vacuum tubing is provided for connection of collection canisters to the rear-panel
barbed hose inlet. A disposable filter, which is both hydrophobic and bacterial (i.e.,
repels liquids and retains bacteria), is provided. This filter connects between the rear-
panel barbed hose inlet and final collection canister (trap unit). This filter should be
replaced when discoloration of its membrane occurs, the membrane contacts aspirate,
or following 150 cumulative hours of use. This filter is designed to retain bacteria which
would otherwise be exhausted into the immediate vicinity. Do not bypass this filter.
b. Batteries. The model 306M utilizes sealed gel-cell batteries which offer
excellent charge retention characteristics, particularly during long periods of storage.
This ensures an ample amount of power during emergencies and transitory procedures.
The battery pack in this device is not intended for routine, day-to-day use; therefore, it
should be used with discretion and its design thoroughly understood. To provide long
life and maximum performance capabilities, the model 306M requires sixteen hours to
fully recharge its fully discharged batteries. Of course, the batteries are rarely
discharged this much, so the subsequent recharge-time is usually less. GEL Cell
batteries require little user care to provide optimum performance and life expectancy.
Because their self-discharge rate is extremely low (approximately 1.5 percent per
month), lengthy periods of disuse without replenishment charging are possible.
(1) Battery care. The life of these batteries depends to a great extent upon
the care they receive. Following these simple guidelines will prevent premature charge
depletion and reduction of battery life.
(a) Do not operate this unit where the temperature range exceeds
minus 60 degrees Celsius (C) to 60 degrees C (-76 degrees Fahrenheit (F) to 140
(b) Do not charge this unit where the temperature range exceeds -20
degrees C to 50 degrees C (-4 degrees F to 122 degrees F).
(c) Do not store this unit with the batteries discharged. Always store
the apparatus in a charged condition.
(d) For long-term storage, the optimum temperature range is 10
degrees C to 30 degrees C (50 degrees F to 80 degrees F).