2150EX AV Flow Module - Isco

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2150EX Area Velocity Flow System Section 5 Maintenance Figure 5-3 Lead-Acid SLA2191 EX Battery Packs and 8V2191SLA Charger The intrinsically safe battery packs require slow charging. When the packs are inserted into the charger (Figure 4-4), the yellow LED indicates that the fuse (required to maintain intrinsic safety) is good and that the circuit is powered. The green LED indicates that the undercharged battery is accepting current; the LED will go out when the battery is fully charged. Figure 5-4 Inserting an SLA2191EX Battery Pack into the Charger It will typically take two days for the green LED to go out, and it is recommended that you continue charging for another 24 to 48 hours after the green LED light goes out. The battery packs may remain in the powered charger indefinitely without damage. 5-6
2150EX Area Velocity Flow System Section 5 Maintenance Battery Replacement Batteries that have been subjected to deep discharge (commonly referred to as over discharge) will have a reduced capacity over time. Charging should be performed before a state of deep discharge is reached. Deep discharged batteries can be discharged 1.5 to 2.0 times more than the rated capacity. Consequently, deep discharged batteries require a longer charging period than normal, with an initial charging current being very low over approximately the first 30 minutes of charging. During this period, the green LED could go out, giving an erroneous indication of a full charge. Because of this possibility, allow batteries a full 30 minutes on the charger before checking for a full charge indicated by the green LED going out. Batteries should be replaced according to the instructions below. The batteries should be replaced with: • two new 8 volt lead-acid battery packs (P/N 68-2000-023). WARNING Substitution of components may impair intrinsic safety. Installing SLA2191EX Battery Packs Battery Pack Door Figure 5-5 Illustration of Battery Packs To install the lead-acid SLA2191EX battery packs: 1. Remove the battery door. To remove the door, turn it 1 /4 turn counter-clockwise and pull it from the Battery Module. 2. Align the connectors and insert the new battery pack into the Battery Module. 3. Check the humidity indicator disk inside the door. (See section 5.4.2.) 5-7
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2150EX AV Flow Module - Isco

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