CD Automation srl
STE Soft Starter
User’s Manual
49
11
Maintenance
11.1
Cooling Fans
The STE Soft Starter with forced ventilation uses fans that rotate permanently when the unit is supplied.
The supply votage is the same of the electronic board (see par. 6.2).
In case of fan failure, the heat-sink can be reach high temperature. In this case to give protection there
is a thermal switch properly setted. The function of this switch is to stop the unit until the heat-sink
temperature falls below the setted value. In this condition the unit is switched OFF and the system can
not work. For this reason is important to control periodically the fans status checking that are rotating.
The fan’s power consumption is below listed:
Size
Continuous service (no Bypass)
With Bypass
Size 9 <45A
No fans
No fans
Size 9 >45A
One Fan 92x92 - 16W
No fans
Size 11
One Fan 120x120 - 17W
No fans
Size 13
Two Fans 120x120 - 34W
No fans
Size 14 450A
Two Fans 120x120 - 34W
No fans
Size 14 500A
Four Fans 120x120 - 68W
No fans
11.2
Maintenance
For maintain a correct cooling, the consumer must clean the heat-sink and the protective grate of the
fans. The frequency of these operations depends on the atmospheric local pollution.
Check also that the screw of the power terminals and earth terminals are shut correctly
(see Diagram of connection).
11.3
Repairing procedure
•
Phone to CD Automation.
•
Explain to Service Engineer the problem because sometimes it can be solved with a phone call.
If this is not possible, ship the unit to CD Automation or to your distributor.
•
Write a fault description and give the name of your personnel to which refers.
•
Use a rugged packaging to ship the unit.
11.4
Warranty condition
CD Automation gives a 12 months warranty to its products. The warranty is limited to repairing and
parts substitution in our factory and does exclude products not properly used and fuses.
Warranty does not include products with serial numbers deleted. The faulty product should be shipped to
CD Automation at customer’s cost and our Service will evaluate if product is under warranty terms.
Substituted parts remain of CD Automation property.
Summary of Contents for STE Series
Page 1: ...USER S MANUAL Rev 01 2007 STE Enhanced Soft Starter ...
Page 2: ......