Factair F4500, Operating Manual

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5
1. Pre-Use
F4500 Safe-Air Testers are fitted with internal lithium rechargeable batteries and in addition also have
a battery tray which accommodates 6 off size AA alkaline type batteries packed separately and stored
underneath the tester within the case. In the event that the rechargeable batteries are not
sufficiently recharged then you can continue to use the instrument with either the Alkaline AA
batteries or mains power supply.
To install the alkaline AA batteries lift the tester out of its case, open the battery drawer at the rear of
the unit and place the batteries inside.
Note: - It is important to strictly observe polarity when fitting batteries and ensure that they are
correctly located.
During use the battery condition is displayed on the screen as shown below -
If the tester is to be used adjacent to a power socket, the mains adaptor may be used. Please note
the unit should be switched off prior to connection or disconnection of the mains supply.
When connected to a mains power supply the internal lithium batteries will be recharged.