Manitowoc MLC650 User Manual

Manitowoc Published 08-12-19, Control # 224-13 3-79
MLC650 OPERATOR MANUAL OPERATING CONTROLS AND PROCEDURES
3
1
3
Legend for Figure 3-26
COLD WEATHER HEATER PACKAGE
To preheat critical components and lubricant sumps during a
cold weather shutdown, an optional Cold Weather Heater
Package is available. The package contains the following
240VAC heaters:
See Figure 3-26
• Hydraulic tank heater (4, View B): 2,000 watt.
The hydraulic tank heater is designed to keep the
hydraulic oil temperature 16°C (30°F) warmer than the
ambient air temperature.
A thermostat, located under the heater cover, is factory
set to turn the heater ON at 16°C (60°F) and OFF at
27°C (80°F).
• Battery pad heaters (5, View C): two, 75 watts each. The
battery pad thermostat (5A, View C) turns the heaters
ON at 5°C (41°F) and OFF at 15°C (59°F).
• Engine oil heater (7, View E): 300 watt.
• Engine coolant heater (8, View E): 1,500 watt.
NOTE When operating below –34°C (–30°F), the heater
package may not provide adequate protection.
Contact your Manitowoc dealer for
recommendations.
The heater package is powered by 125/250VAC, 60A
electricity supplied by either of the following:
• Owner furnished generator
• Manitowoc furnished APU (see Figure 3-27 on page 3-
80).
Turning Heaters ON
1. Make sure the generator (APU) engine is OFF.
2. Turn OFF the circuit breakers in the load center (6, View
D).
3. Make sure the interlock switch (2, View A) is OFF at the
receptacle (1) on the crane and at the receptacle on the
generator (APU).
4. Connect the power supply cable (3, View A) to the
receptacle (1) on the crane and to the receptacle on the
generator (APU).
5. Start the generator (APU) engine. The Manitowoc
supplied APU can be started from inside the operator’s
cab.
6. Turn ON the interlock switch at the generator (APU).
7. Turn ON the interlock switch (2, View A) at the
receptacle (1) on the crane.
8. Turn ON the circuit breakers in the load center (6, View
D).
Turning Heaters OFF
1. Turn OFF the circuit breakers in the load center (6, View
D).
2. Turn OFF the interlock switch (2, View A) at the
receptacle (1) on the crane.
3. Turn OFF the interlock switch at the generator (APU).
4. Stop the generator (APU) engine. The Manitowoc
supplied APU can be stopped from inside the operator’s
cab.
5. If necessary, disconnect the power supply cable (3,
View A) from the receptacle (1) on the crane. Store the
cable on the generator (APU).
Item Description
1 Receptacle, 125/150VAC, 60A
2 Interlock Switch
3 Power Supply Cable
4 Hydraulic Tank Heater
5 Battery Pad Heater (2)
5A Battery Pad Thermostat
6 Load Center
7 Engine Oil Heater
8 Engine Coolant Heater
CAUTION
Avoid Machinery Damage
When the ambient temperature is above –1°C (30°F) or
when the engine is running, do not turn on the engine oil
or coolant heaters. Doing so may result in overheating
because they are not supplied with thermostats.

Manitowoc MLC650 Specifications

General

Brand	Manitowoc
Model	MLC650
Category	Construction Equipment
Language	English