Huvema MIP 30, Руководство пользователя

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- Check condition of electric instruments, junction wires, cables and electrical connections.
- After everything has been checked, connect the machine to the mains:
Supply is made respecting all conditions in §1.
In order to protect the feed circuit it is recommended to equip the power unit with fusible:3 x 10A for the 3
phases (L1, L2, L3); or to equip the power unit with an automatic switch 3P + N with Ir = 2.5A.
- Check if machine is correctly supplied after it is connected to the mains.
- After all checkings are made and machine is connected to the mains, start the machine on idle running in
order to determine the correct sense of rotation of the roller: when pushing the pedal on the right side, the
motor urns to the right and when pushing the left pedal, it turns left.
- Leave the machine on idle running for one hour. Meanwhile, check for abnormal noises of the electric
motor of overheating of the electric motor or electric instruments.
- Start the machine under lead and repeat all checking mentioned above.
8.3 Operation of the electric equipment
In order to start the machine, turn the QS power switch, which is to be found on machine frame, to the “I”
position (shut):
Positions of QS:
“O”- machine: uncoupled
“T” –machine: coupled
Push the right pedal for starting with the sense of direction to the right. The pedal acts the SB2 micro switch
making its contact; it controls connection of K1 contractor which supplies the M motor. The motors starts and
turns right.
Push the left pedal for starting with the sense of direction to the left. The pedal acts the SB3 micro switch
making its contact; it controls connection of K2 contractor which supplies the M motor. The motors starts and
turns left.
When the pedals are not pushed, the contact of the micro switch (SB2 or SB3) opens, the contractor (K1 or
K2) turns off and the M motor stops. The motor runs as long as one of the pedals is pushed. Machine is
equipped with SB1 stop button, which can be used for emergency situations or when repairs, adjustments etc.
take place. After the SB1 stop button was pushed, it is necessary to pull it out when you want to restart the
machine because it is a retaining button and therefore will stay pushed.
8.4 Maintenance and repair of electric installation
8.4.1 T
ROUBLESHOOTING
In case all those indicated at the previous chapters were respected and machine does not start when pressing
one of the paddles and K contractor (K1 or K2) does not connect, make the following operations:
- Check if machine is correctly supplied: 3 – 50Hz; 400V.
- Check if thermal protection of M motor (FR thermal relay) was activated and look for the cause which
determinate it. Reasons could be:
•
Supply of M electric motor is made only on two phases or with lower voltage than 360V/50Hz.
•
Thermal relay is not correctly set – at 2.3A.
•
M electric is locked or turns hardly because of frictions;
•
FR thermal relay out of order
Make corrections and reset the thermal relay with the help of resetting lever.
- Check the fusible: F2 in transformer primary circuit and F3 in the control circuit. In case one of the fuses is
broken, remove the fault and replace the fuse.
Attention! Use only calibrated replacing pieces with the parameters indicated.
- Check if the T transformer for 24V supply voltage of the control circuit is in working order:
•
Check if T transformer is fed correctly in primary with a 400 V voltage;
•
Check if in secondary the transformer supplies the 24 V voltage;
- Check if the control circuit has continuity:
•
Tighten screws of the connections.
•
Contacts of instruments (SB1, SB2, SB3 FR) in the control circuit to close correctly.
- Check if K contractor is in working order.
If pressing the pedal, the contractor makes a connection, but the M electric motor does not start, there could
be two situations.
- If M motor is correctly fed from 3-50Hz, 400V voltage.
•
Check if the electric motor is in working order: stator winding not to be broken, connections at the
terminal box to be perfect etc.