Maeda MC405C-3 - Operation and Checking after Power Connection

Section 4 – ELECTRIC MOTOR OPERATION Mini-Crawler Crane M A E D A
4-136 1/2019 MC405C-3
Operation and Checking After
Power Connection
WARNING!
• Before starting the electric motor, make
sure of no presence of personnel around
and impediments, and sound a horn.
• Warm-up is required. The motor needs
adequate warm-up especially in cold
climates.
Failure to warm the motor may result in
serious accident on account of low
reactivity of the travelling gear and crane to
the operating 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,
the peripheries, and electric wiring for burnt
smell and parts. Promptly contact us or our
sales service agency to request inspection
and repair.
• Crane operational check is necessary after
motor warm-up.
Keep the hook block away from the boom to
avoid interference and collision.
• Exercise caution to keep the boom from
contact with an operator and this machine
when slewing it.
• If crane operational check detects an
abnormal event, make an emergency stop
promptly and repair a relevant part.
Potential serious accident may occur if
disregarded.
• Exercise caution not to travel on or entangle
the cabtyre cable during crane travelling.
Staff guide personnel as necessary, and
follow the lead of them.
• Keep the Inverter unit cover away from
flammable materials.
The inside of the Inverter unit will rise in
temperature that may lead to fire, if
disregarded.
CAUTION:
• Proper temperature of hydraulic oil: 50 to
80°C
The hydraulic oil should be at around 20°C
regardless of operational environment such
as low-temperature operation.
• Ensure that the main switch of the remote
control box is turned OFF.
1. Set the engine and electric motor switch to
the "Elec. Motor" position.
Fig. 4-393
2. Insert the key into the starter switch and turn
the key to the "START" position.
Fig. 4-394
3. Release your hand from the key once the
electric motor has started.
The key will automatically return to the "ON"
position.
Fig. 4-395