Bio-Rad Helios® Gene Gun System - Manual (Page 16)

Fig. 8. Cartridge Holder and Cartridge Extractor Tool.
Section 4
Setting up the Helios Gene Gun System
4.1 Inserting the Battery into the Helios Gene Gun
The electrical system of the Helios Gene Gun is powered by a 9 volt battery. Under nor-
mal use, this should provide sufficient energy for 1,000 shots. The battery compartment is in
the base of the handle near the attachment fitting for the helium hose (Figure 9).
To insert the battery, first remove the battery cover by sliding it toward the front of the
Gene Gun. Slide the battery into the opening as shown in Figure 9. The battery must be ori-
ented with the positive terminal toward the front of the Gene Gun indicated by the "+" symbol
inside the battery compartment. (Note: If the battery is inserted correctly, a tone will be audi-
ble for ~5 sec and the battery status LED will light; if the battery is inserted backward, the
electrical system will not operate and the Helios Gene Gun will be non-operational.) The bat-
tery is held in place by the battery cover.
12