Accurex XDG Installation, Operation And Maintenance Manual
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Contents
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Direct Gas Make-Up Air49TroubleshootingSupply FanProblem: Motor overamps.Motor voltage correct? Yes No Provide proper power supply. Reference Supply Fan, Start-Up.Fan rotation correct? Yes No Reverse fan rotation. Reference Supply Fan, Start-Up.Air volume too high? No Yes Adjust drives or increase external static pressure as needed.Reference Supply Fan, Start-Up.Actual static pressure lower thandesign?No Yes Adjust drives to reduce fan RPM. Reference Supply Fan, Start-Up.All three phases supplied to motor? Yes No Supply motor fuse (FU1) blown. Test and replace blown fuse(s).Motor horsepower too low? No Yes Resize motor.Shorted windings in motor? Yes Replace motor.Everything is working properly, consult factory.Problem: Insufficient airflow.Damper(s) not fully opened? No Yes Adjust damper linkage(s), or replace faulty actuator(s). Damperactuators may take a few minutes to open.Fan rotation correct? Yes No Reverse fan rotation. Reference Supply Fan, Start-Up.Filters dirty or clogged? No Yes Clean or replace filters. Reference Maintenance, General, Filters.Belt slipping or broken? No Yes Replace or tighten belt. Reference Maintenance, General, V-BeltDrives.Fan speed too low? No Yes Adjust drives as needed. Reference Supply Fan, Start-Up section.System static losses too high? No Yes Reduce losses by improving ductwork.Leaks in ductwork? Yes Repair leaks.Everything is working properly, consult factory.Problem: Excessive noise or vibration.Belts worn or loose? No Yes Replace worn belts or tighten loose belts. ReferenceMaintenance, General, V-Belt.Sheaves aligned? Yes No Align sheaves. Reference Maintenance, General, V-Belt Drives.Wheel(s) unbalanced? No Yes Clean and/or balance wheel(s).Bearings worn or need lubrication? No Yes Replace worn bearings or lubricate bearings as needed.Reference Maintenance, General, Bearings.Wheel(s) rubbing on inlet? No Yes Adjust wheel(s) or inlet.Fan rotation correct? Yes No Reverse fan rotation. Reference Supply Fan, Start-Up.Everything is working properly, consult factory. |
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