Maeda MC285C-3 - Operation and Inspection after Connecting Power Supply Cable

Section 4 – ELECTRIC MOTOR OPERATION Mini-Crawler Crane M A E D A
4-118 1/2019 MC285C-3
4. Upon completion of connection of the power
supply box cabtyre cable (A), replace the
cover (6) of the terminal block (5) and close
the door (3) of the power supply box (2).
5. Move and connect the cable terminal block to
the power supply equipment breaker without
undue strain on the cabtyre cable (A).
6. Turn ON the power supply equipment
breaker.
7. Turn ON the breaker (1).
Fig. 4-307
8. Turn ON the AC circuit power switch (12) and
DC12V power switch (13).
Fig. 4-308
Operation and Inspection after
Connecting Power Supply Cable
WARNING!
• Before starting the electric motor, make sure
no personnel or impediments are close to
the machine and sound the horn.
• Warm-up time is required. The motor needs
adequate warm-up time especially in cold
climates.
Failure to warm the motor may result in a
serious accident on account of slow
reaction of the travelling gear and crane
from the operation lever.
• Ensure that no abnormal noise, odour, or
vibration is present in and around the
Inverter unit and power unit during warm-up.
If abnormal conditions are encountered,
immediately turn the starter switch to the
OFF position to bring the machine to a halt.
Turn OFF the power supply equipment
breaker accordingly to shut off the supply
source.
Check the Inverter unit and electric motor,
surrounding items and electric wiring for
burning smells or damaged parts. Promptly
contact us or our sales service agency to
request inspection or repair.
• Crane operational check is necessary after
motor warm-up.
Keep the hook block away from the boom to
avoid interference or collision.
• Exercise caution to avoid contact between
the boom, the operator and any personnel
whilst slewing it.
• If crane operational check detects an
abnormal event, make an emergency stop
promptly and repair any relevant part. A
potential serious accident may occur if
disregarded.
• Exercise caution not to drive on or entangle
the cabtyre cable during crane travelling.
A member of staff should guide the way as
necessary and follow their lead.
• Keep the Inverter unit cover away from
flammable materials.
The inside of the Inverter unit will rise in
temperature and that could lead to fire if
disregarded.
CAUTION: Normal temperature of the
hydraulic oil is: 50 to 80°C
The hydraulic oil minimum temperature
should be around 20°C regardless of the
operational environment such as
low-temperature operation.
1. Turn the main breaker switch ON.
Fig. 4-309
NOTICE: The on/off setting for the Main Breaker
Switch determines whether the engine or electric
motor is used as a power source.
2. When the “preheat lamp” goes off, turn the
key to the “START” position.