Pur•Chek™ Pro Operation and Maintenance Instruction Manual6 P/N 2100-9001 Rev 2Figure 3-3. High Side Sample Hose Configuration3.4. Control PanelThe control panel serves as the main user interface. The control panel features three soft key buttons thatchange their function as the instrument changes modes. The current function for each button is displayedby the soft key label at the bottom of the graphic display. Red and green LEDs at the top of the controlpanel are used for visual status indications. Refer to Figure 3-4.Figure 3-4. Control Panel Showing Key Components3.5. AC Power AdapterThe Pur•Chek™ Pro is powered via a 110/240 VAC, 50/60 Hz power transformer. This transformer isincluded with each unit and converts a standard 110/240 VAC, 50/60 Hz wall outlet to 12 VDC to powerthe device. An optional internal and rechargeable battery kit is available separately.NOTE: Use of any other power source may cause damage to the unit and void thewarranty.Figure 3-5. AC Power AdapterService End(1/4 SAE Flare Nut)Analyzer EndGraphicDisplay