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PART NO. 17 2500-2293 18 2500-2293 19 2500-1975 22 2500-1975 2520-395 23 2300-735 DESCRIPTION Circuit Breaker, 15 amp Auto-Reset Circuit Breaker, 15 amp Auto-ResetFuse, 3 Amp 3 Amp Fuse for Control Board Complete Controller Assembly 115VAC (order limit harness and mounting brackets separately) Heyco Bushing, 1.09 diameter -28 MODEL BGUS/BGUS-D • SG/SG-D OPERATOR INSTALLATION GUIDE BATTERY MAINTENANCE The gel-cell batteries in this operator require no routine maintenance. For assured continued performance, they should be replaced every year. If power is to be removed for one week or more, disconnect the negative wire from the batteries as this will prevent deep discharging. Fully charge before use after storage or upon initial installation. BRUSH REPLACEMENT Brushes should be inspected every 100,000 cycles, (200,000 for BGU-D) or yearly, whichever comes first. The motor has two brushes, one on each B side. Original brushes are approximately 3/4” long and should be replaced when they are 1/4” long, or sooner. If brushes are allowed to wear beyond this point, permanent damage to the motor may result. To inspect the brushes, remove retaining cap (A), with straight-blade screwdriver, and carefully pull assembly straight out. Measure remaining brush material (B). To reinstall, place brush in hold, aligning rounded indentation (C), correctly with motor shaft. Gently push in spring and align contact with oval carrier, push in with retaining cap (D). Hold in place and thread cap into brush carrier. Do not overtighten or cap will crack! Repeat for other brush. If brushes require replacement, order kit #2510-243. C A D -29 MODEL BGUS/BGUS-D • SG/SG-D OPERATOR INSTALLATION GUIDE PREVENTATIVE MAINTENANCE IMPORTANT! •Always disconnect power from operator before servicing. • Keep clear of gate during operation. GENERAL: LINEAR gate operators are designed for many years of trouble-free operation and, under recommended operating conditions, will require only minimal maintenance. To ensure that your unit is ready for operation at all times--and to preclude serious damage or failure--inspect the unit systematically. Proper adjustments and lubrication should be made as recommended. LUBRICATION: Bearings. For models which have pillow block style bearings with greaseable fittings, lubricate at least twice a year with a lithium complex based, petroleum oil NLGI 2 rated grease. Oilite and precision sealed bearings do not require additional lubrication. Motor. Motors have sealed ball bearings and do not require further lubrication. If bearing noise develops after several years of operation, bearings should be replaced by a motor repair company, or the motor should be replaced if necessary. Drive Chain and Sprocket (slide gate models only). The main drive chain and sprockets should be inspected for wear, cleaned, and wiped down with a lightly oiled rag every six months. Swing Gate Arm (swing gate models only). Check all bolts for proper tension and tighten if necessary. Make sure the arm folds overextends itself slightly against the overtravel stop to reduce the chance that the gate can be backdriven open. Adjust the close limit slightly if additional travel is required. Lightly lubricate all pivot points with a light machine oil. Barrier Gate Arm (barrier gate models only). Check all bolts for proper tension and tighten if necessary. If the arm has been warped or damaged, replace as necessary. ADDITIONAL SIX MONTH PREVENTATIVE MAINTENANCE: 1. For operators which utilize torque limiting clutches, check 6. In operators which have a disconnect handle, inspect for proper tightness. If there appears to be dust from wear disconnect handle for proper function and lubricate if on the pads, inspect the pads and replace if necessary. necessary. Use a lithium based grease on all moving If the clutch cannot be adjusted tightly enough to move parts. the gate without slipping, the pads must be replaced. 7. Inspect all nuts and bolts for proper tightness and tighten 2. For operators with V-belts, inspect for wear and replace as necessary. as necessary. Check for proper tension and adjust if 8. Check all reversing devices for proper function. Inspect required. Check all pulley setscrews for tightness and all contact edges for wear and replace if required. Check tighten if necessary. photo-eyes for proper alignment and function. 3. For operators with internal chain drives, inspect chain 9. Check current sensing for proper adjustment when finished and sprockets for wear and replace if necessary. with inspection and maintenance. Check for proper tension and alignment, and adjust if required. Check all hub sprocket setscrews and tighten 10. Inspect the installation area. Are all the warning signs intact if required. and visible? If they are missing or need replaced, contact LINEAR. Be sure there are no control stations mounted 4. Check limit switches and limit actuators (cams, limit nuts, within reach of the gate. Review safety literature with the etc...

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