• The motor is installed on a tilting base (PG-30/PG-35/PG38 units). Do not forget to leave enough cable to be
able to change the belts and tighten them more easily.
•NOW FILL WITH OIL TO THE CORRECT LEVEL.
5.1 STARTING
• First follow the instructions in section 2.0
• Ensure that it has been filled with oil.
• Re-tighten and check the filling and emptying caps.
• Check the TURNING DIRECTION of the blower, indicated by the arrow shown, by starting and stopping the
motor after 1 second. Always look straight at the blower axis.
•
Ensure that the installation tube is free of any obstacles and all the flow valves are open.
• Check that the suction side is free of any blockage and the filter cartridge is clean, if the unit has been stored
or located in a dusty atmosphere.
• The unit is ready for start up.
5.2 START-UP
If starting without load:
• Run it for 30 seconds and then stop it again, checking that the blower slows down gradually, without making
any strange noises.
• The safety valve is delivered unset. (see section 6.0 Setting the safety valve)
•Re-start the blower unit and check all the safety devices.
• The blower unit is ready for SERVICE.
5.3 PRECAUTION
If you intend to stop the blower for more than 3 weeks, we recommend that you follow the instructions in
section 4.1 Storage
6.0 SETTING THE SAFETY VALVE.
This valve is solely designed to protect the blower from an overload and it should be situated such that between
the blower and the valve there is no closing mechanism. It is not to be used as a regulating valve.
The safety valve is delivered unset.
The reason for this is to have the valve installed at 100% capacity, as the operating pressure usually varies with
respect to what was established in the order, thereby producing poor setting, either under or over.
•To set the valve, remove the hood covering the spring.
• Start up the blower unit in normal operating mode. The valve should then open.
• Tighten the spring by adjusting the nut at the top until the valve closes.
When it is closed, turn the nut one more time, then fasten it in that position with the locking nut.
• Refit the hood.
The valve is set at the optimum point.
6.1 INSTALLING THE FREQUENCY CONVERTER.
•Follow the instruction manual.
• The frequency converter to be used must be suitable for operating with constant torque.
• Both minimum and maximum frequencies must be set to avoid problems with lubrication and excessively high
temperatures when it is too low, or surpass the maximum speed when it is too high.
WARNING: Earthing
With converter drive, particular attention must be paid to the earthing devices to ensure:
1.- Correct operation of all the protection devices and relays for general safety.
2.- A minimum or acceptable level of electromagnetic interference.
3.- An acceptable tension in the bearings of both the motor and the blower to avoid current and bearing faults.
4.- The electric cable connecting the variator to the motor must be screened.
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