User`s manual

8
Voltage and Power Selection:
1. The voltage, frequency and phase of the power supply must be consistent with the
motor nameplate rating.
a.
The motor will operate satisfactorily on voltages within 10% of the nameplate
value or frequency within 5%. The combined variation must not exceed 10%.
2. The Allegro blowers are designed to operate from a grounded, 115 VAC, 60Hz or
220V/60Hz, single phase power source.
a.
Select models are available in a 220V/50Hz. single phase configuration.
b.
It is crucial to the performance of the blower that the proper power source is
selected.
3. Standard 115 volt blowers are supplied with a P5-15 plug or a twist-lock NEMA plug
(excluding 220V/50Hz blowers)
a.
Do not change or alter the plug as this will affect the performance of the blower.
b.
Operation from an inadequate power source or use of incorrect electrical plug
may result in property damage and/or personal injury.
4. To determine maximum length of extension cord, when used with a blower, refer to
the National Electric Code Tables, Article 400.
CAUTION
When choosing an extension cord, ensure that the cord is not an undersized wire.
As a “Rule of Thumb”, the diameter of cable for an extension cord should be larger
than the diameter of the cord being plugged into it. Consult the NEC (National
Electrical Code) Tables for specific cord size information.