Megmeet MV820 - Periodical Maintenance

288
Inspection item
Inspection instructions
Inspection standard
Inspection contents
Cycle
Inspection means
Motor
1. Heat generation
Anytime
1. Touch by hand
1. No abnormal heat
generation
2. Noise
2. Hear
2. Low and regular
noise
Running status
1. Output current
Anytime
1. Current meter
1. Within the rated
range and
three-phase
equilibrium
2. Output voltage
2. Voltmeter
2. Within the rated
range and
three-phase
equilibrium
3. Internal temperature
3. Thermometer
3. The difference
with ambient
temperature is less
than 35℃
9.2 Periodical maintenance
Users are recommended to carry out periodical maintenance for the drive once every 3 or 6 months based on the
operating environment.
① Only trained professionals are allowed to dismantle, maintain and replace parts of the device;
②
Do not leave any screws, gaskets or other metal things in the machine. Otherwise, the device may be damaged.
General inspection items:
(1) Check if the screws of control terminals are loose. If so, use a screwdriver to fasten them;
(2) Check if the main circuit terminals are poorly contacted, and the connection part of copper bar is overheated;
(3) Check if there is any damage to power cables and control cables, especially whether there is any wear on the cable
sheath;
(4) Check if the insulation tapes around the power cables are stripped;
(5) Clean out the dust on the circuit board and the duct. It is better to use a dust collector;
(6) Before testing the grounding insulating performance of the drive, short all the input and output terminals (L1, L2,
L3/N, U, V, W, BR, +, -) of the main circuit first, and then conduct the grounding test. It is strictly forbidden to conduct