Genie GS-3390 Service Manual

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Contents

Genie GS-3390 Service Manual Manual pdf 40 page image

REV GSection 3 • Scheduled Maintenance Procedures July 20073 - 14 GS-3390 • GS-4390 • GS-5390 Part No. 72863B-1Inspect the BatteryGenie requires that this procedure be performedevery 250 hours or quarterly, whichever comesfirst.Proper battery condition is essential to goodmachine performance and operational safety.Improper fluid levels or damaged cables andconnections can result in component damage andhazardous conditions.Electrocution/burn hazard. Contactwith electrically charged circuitscould result in death or seriousinjury. Remove all rings, watchesand other jewelry.Bodily injury hazard. Batteriescontain acid. Avoid spilling orcontacting battery acid. Neutralizebattery acid spills with baking sodaand water.1 Put on protective clothing and eye wear.2 Be sure that the battery cable connections arefree of corrosion.Note: Adding terminal protectors and a corrosionpreventative sealant will help eliminate corrosionon the battery terminals and cables.3 Be sure that the battery retainers and cableconnections are tight.4 Fully charge the battery. Allow the battery torest 24 hours before performing this procedureto allow the battery cells to equalize.5 Remove the battery vent caps and check thespecific gravity of each battery cell with ahydrometer. Note the results.6 Check the ambient air temperature and adjustthe specific gravity reading for each cell asfollows:• Add 0.004 to the reading of each cell forevery 10° / 5.5° C above 80° F / 26.7° C.• Subtract 0.004 from the reading of each cell forevery 10° / 5.5° C below 80° F / 26.7° C.Result: All battery cells display an adjustedspecific gravity of 1.277 or higher. The batteryis fully charged. Proceed to step 10.Result: One or more battery cells display aspecific gravity of 1.217 or below. Proceed tostep 7.7 Perform an equalizing charge OR fully chargethe batteries and allow the battery to rest atleast 6 hours.8 Remove the battery vent caps and check thespecific gravity of each battery cell with ahydrometer. Note the results.9 Check the ambient air temperature and adjustthe specific gravity reading for each cell asfollows:• Add 0.004 to the reading of each cell forevery 10° / 5.5° C above 80° F / 26.7° C.• Subtract 0.004 from the reading of each cell forevery 10° / 5.5° C below 80° F / 26.7° C.Result: All battery cells display a specific gravityof 1.277 or greater. The battery is fully charged.Proceed to step 10.Result: The difference in specific gravityreadings between cells is greater than 0.1 ORthe specific gravity of one or more cells is lessthan 1.217. Replace the battery.10 Check the battery acid level. If needed,replenish with distilled water to 1/ 8 inch / 3 mmbelow the bottom of the battery fill tube. Do notoverfill.11 Install the vent caps and neutralize anyelectrolyte that may have spilled.Checklist B Procedures