MK Plastics KVC IO&M - Manual (Page 11)

M.K.Plastics Corp. Montréal, Québec www.mkplastics.com 11
STEP-DOWN TRANSFORMER
(208/230/460/575V - 1 PHASE)
(24V OR 120V - 1 PHASE)
BYPASS DAMPER ACTUATOR (BY OTHERS)
HIGH VOLTAGE
LOW VOLTAGE
STEP-DOWN TRANSFORMER
(208/230/460/575V - 1 PHASE)
(24V OR 120V - 1 PHASE)
BYPASS DAMPER ACTUATOR (BY OTHERS)
HIGH VOLTAGE
LOW VOLTAGE
STEP-DOWN TRANSFORMER
(208/230/460/575V - 1 PHASE)
(24V OR 120V - 1 PHASE)
BYPASS DAMPER ACTUATOR (BY OTHERS)
HIGH VOLTAGE
LOW VOLTAGE
STEP-DOWN TRANSFORMER
(208/230/460/575V - 1 PHASE)
(24V OR 120V - 1 PHASE)
BYPASS DAMPER ACTUATOR (BY OTHERS)
HIGH VOLTAGE
LOW VOLTAGE
Figure-7. Bypass Damper Wiring Schematic
Operation Checklist
• Verify that proper safety precautions have been followed.
• Electrical power must be locked off.
Check fan mechanism components:
• Nuts, bolts, set screws are tight.
• Mounting connections are properly made and tightened.
• Bearings are properly lubricated.
• Wheel, drives and fan surfaces are clean and tightened.
• Rotating assembly turns freely and does not rub.
• Drives on correct shafts, properly aligned, and properly tensioned.
Check fan electrical components:
• Motor is wired for proper supply voltage.
• Motor was properly sized for power of rotating assembly.
• Motor is properly grounded.
• All leads are properly insulated.
Trial “bump”:
• Turn on power just long enough to start assembly rotating.
• Check rotation for agreement with rotation arrow.
• Listen for any unusual noise.
Run unit up to speed:
• Bearing temperatures are acceptable (<200°F) after one to two hours of operation.
• Check for excess levels of vibration. Filter in readings should be 0.15 inches per second or less.
After one week of operation:
• Check all nuts, bolts and setscrews and tighten if necessary.
• Readjust drive tension if necessary.