7
ProBleM
PoSSiBle CAUSe
SolUtioN
Excessive vibration
Air intake blocked
Turn fan off and clear debris from intake.
Possible internal damage
Turn off and inspect fan blades, shaft, and housing
for debris, damage, and loose screws.
Note: Never run fan for extended periods without
installing duct on the exhaust fl ange.
Possible external damage
Turn fan off and inspect for loose guards, broken
welds, etc.
Circuit breaker trips
SVF-8AC series only
Voltage output insuffi cient
Test outlet with volt meter.
Extension cord improperly sized
Use 14 AWG extension cord up to 25 ft.
Faulty Capacitor
Check and Replace with P/N MTRA089
Fan will not run
SVF-8DC only
Blown fuse (DC version only)
Check and replace. Use only a 20A/32 VDC slow
blow fuse.
Battery connection
Ensure proper connection from battery clips to bat-
tery terminal posts. On battery pack units, recharge
battery.
troubleshooting
Wiring Schematic - SVF-8AC-MA
