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CONDITION
TROUBLESHOOTING
Fans Emit
Excessive Noise
Check that the case is aligned, level and plumb.
Check axial fans for cleanliness.
Check that fan motors are securely mounted in brackets.
Check that nothing is preventing blade rotation.
Check that the fan shroud is properly secured.
Fans Are Not
Working
Check that the MAIN power switch is on.
Check that fans are plugged.
Check for foreign material obstructing fan performance.
Check that fan blades freely rotate within fan shrouds
Check that power is going to fans
Check that fan wiring is connected on terminal blocks.
System Not
Operating
Check that the utility power is on.
Check that the MAIN power switch is on.
Check the circuit breaker box for tripped circuits.
TROUBLESHOOTING (TO BE PERFORMED BY TRAINED SERVICE PROVIDERS ONLY), PAGE 1 OF 2