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KUB T120_KUB EKO v2019.04
MAINTENANCE
Fan bearings are maintenance-free.
It is necessary to use filter before the fan.
The suitable filter must be chosen by designer of ventilation system.
Before cleaning, disconnect the supply voltage and block the switch to avoid accidental switching on.
Wait until any mechanical movement stops, the motor cools down and connected capacitors (when used) discharge .
Ensure that the fan and installed parts and accessories are firmly and tightly installed.
Carefully clean the impeller to avoid changing the balance of impeller.
For the fan cleaning do not use mechanical cleaners, compressed air or water stream, aggressive chemicals. When cleaning the fan, do not de
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form the impeller, avoid moisture or water contact with electrical devices and equipments.
After the maintenance work and when installing back to the air duct system, perform the same actions described in Installation and Start-up sec
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tions and follow other requirements of this document.
IMPROPER OPERATION AND REPAIR
Fault removal works shall be performed only by trained and qualified personnel.
Before start of repair works, ENSURE THAT the unit is disconnected from the supply voltage and wait unit the fan motor stops and the heating
elements cool down.
Follow the above safety requirements.
The unit switches-off:
Check if voltage and current of the mains correspond to the requirements indicated on the product label.
Check for power availability to the unit.
Upon elimination of power supply faults, switch-on the unit again.
The fan motor has integrated automatic thermal protection and power supply is proper but the unit does not switch on:
Wait for 10–20 minutes until the motor cools down.
If the motor switches on by itself after 10–20 minutes without disconnecting power supply, automatic thermal protection was activated. Find the
cause for motor overheating and eliminate it.
The fan motor with thermo-contact protection stops because of overheating and external protection is activated:
Allow the motor to cool down for 15–20 minutes.
Correct the cause for motor overheating.
Switch the fan again.
The motor does not switch on again:
Disconnect the supply voltage.
Ensure that the impeller is not blocked.
Inspect the capacitor (for single-phase fans – according the connection diagram). If faults repeat, change the capacitor.
If the fault can not be removed, please contact the supplier.
ELECTRIC INSTALLATION
The devices have rotating parts and are connected to the electricity. This may pose a risk to the human health and life. That is why safety require
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ments have to be followed while installing. If you have any doubts on the safety of the products installation and use, please contact the manufac
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turer or its representative.
Installation works may be performed only by trained and qualified personnel.
Make sure that the electric power chain data complies with the data on the product label on the device case.
Selected power cable has to match device power.
The fan has to be connected according to the electric scheme which is described in this document and is shown under the electricity connection
switch cap (fig. 06).
Before turning on, it is necessary to make sure that the electricity scheme in this document coincides with the scheme indicated under the electrical
circuit box cover. If they do not match, it is strictly prohibited to turn the device on and it is necessary to contact the manufacturer or its represen
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tative.
The device must be connected to the power supply using the security features, for example, an automatic switch (Table 1).
Make sure that the grounding wire is connected.
If the device engine speed control regulator is used, be sure that it ensures safe activity of the engine.
It is necessary to ensure minimal engine speed at which the reverse thrust valves (if any) open.
