Operation and Maintenance Instruction Manual Pur•Chek™ ProP/N 2100-9001 Rev 2 73.6. Back Panel ConnectionsThe connections located on the back panel are illustrated below in Figure 3-6.CAUTION: The sample outlet port should never be obstructed. Keep the sample outlet portfree and clear at all times. Do not operate near open flame.Figure 3-6. Back Panel Connectors3.7. Hard Shell Storage/Carrying CaseThe hard shell storage/carrying case is custom fit to the Pur•Chek™ Pro. It provides rugged protection forthe instrument as well as convenient storage for all components. See Figure 3-7. The enclosure isgeneral purpose and is not watertight.Figure 3-7. Hard Shell Storage/Carrying CaseSample InletSample Outlet Battery ChargePort12 VDC Power Input(AC Adapter)