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General Fan Information
General fan information:
Revolutions per minute of the fan. If a speed change is anticipated, include RPM of the motor as well as size and bore of both drive and driven sheaves.
Cubic feet per minute.
No load amperes. Belt removed but not the sheaves.
Voltage on the motor name plate.
Actual voltage from field test.
Full load amperes listed on the motor name plate.
Total inlet pressure to the fan. Measure this as close to the inlet and as directly into the air system as possible.
Static inlet pressure. Use the static connection on the pitot tube.
Velocity inlet pressure. This is the total inlet pressure minus the static inlet pressure.
Total outlet pressure from the fan discharge.
Static outlet pressure from fan discharge.
Velocity outlet pressure. This is total oulet pressure minus static outlet pressure.
Fan pressures are normally recorded in inches of water. 27.7" of water pressure equals 1 psi or pound per square inch.
General motor information:
A = amperes.
V = voltage.
PF = Power factor.
W = Watts.
KWH = Kilowatt hours.
EFF = Efficiency.
PH = Phase factor.
KW = 1000 watts.
KVA = Kilovolt amperes.
NP = Nameplate.
NL = No load.
R = Running.
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