ALMECO nv
Air and water technologies
Royennestraat 51, B-7700 Moeskroen
[email protected] - www.almeco.eu
9
EP10A
compact blower
e. Electrical connections
Units are typically driven by a metric frame electric motor with an environmental protection level IP55. If alternative
motors are supplied, reference to the motor rating plate is required for all electrical details. The blower is designed to be
continuously run at its designated speed, any inverter drive program giving speed control and/ or speed changes must be
approved by Almeco.
If a star/ delta starter has not been supplied with the unit, it is not Almeco’s responsibility to control the starting of the
unit.
I. We recommend that a soft start with thermistor control is used to start the blower, or an inverter with ramp-up
and down time set at 5 seconds.
II. If star/delta starting is used and switched by a plc, it is the customer’s responsibility to ensure that the switching
times are correct. In this case the number of start/stops is limited to 6 per hour.
III. All wiring should be installed to national wiring standards.
Table 1: Motor configuration options:
a. Delta configuration
b. Star configuration
c. Star/ delta starter
If an inverter is not used, use a suitable
starter with overload protection star/
delta starter.
f. Shaft rotation
All units rotate counter clockwise when viewing the blower from the cooling fan of the motor. Alternatively, clockwise
when viewing the polley/ shaft end.
NOTE (a): Air will flow out of the blower discharge even when it is run in reverse but at approximately 60% of the normal
performance.
NOTE (b):
•
Never run the blower unit without the belt and belt guard fitted.
•
Never run the blower when disconnected from ducting/ air delivery device.
•
Always ensure that the power is isolated and locked off before commencing any maintenance on the unit.
•
Before operating the blower ensure that the blower is secured in position.
All blower motors are supplied with a thermistor connection. It is important to use these as it protects the motor and
may prevent the motor/blower from failure. All Almeco starters provide this safety cut-out feature. As an optional extra
the blower head can come equipped with two thermal cut-out probes which provide the blower head bearings with
additional protection. These probes will be pre-wired into the motor thermistor circuit and are wired into terminals T1 and
T2 as shown in Figure 4.
!
!
Ramp-up and down times should be set at no less than 5 seconds.
Incorrect fan rotation is the most common cause of drying system under
performance. Double check!
