Manitowoc MLC300 User Manual

Manitowoc Published 11-20-19, Control # 234-19 3-87
MLC300 OPERATOR MANUAL OPERATING CONTROLS AND PROCEDURES
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1
3
Legend for Figure 3-31
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 3-31
• Hydraulic tank heater (5, 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 OFF at 38°C (100°F).
• Engine coolant heater (6, View C): 1,500 watt.
• Engine oil heater (7, View D): 300 watt.
NOTE When operating below –34°C (–30°F), the heater
package may not provide adequate protection.
Contact your Manitowoc dealer for
recommendations.
• Battery pad heaters (8, View E): two, 75 watts each.
The battery pad thermostat (9, View E) turns the heaters
ON at 5°C (41°F) and OFF at 15°C (59°F).
The heater package is powered by 125/250VAC, 60A
electricity supplied by either of the following:
• Owner furnished generator.
• Manitowoc furnished APU (see Figure 3-32 on page 3-
88).
Turning Heaters ON
1. Make sure the generator engine (APU) is OFF.
2. Turn OFF the circuit breakers in the load center (4, View
A).
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
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 (4, View
A).
Turning Heaters OFF
1. Turn OFF the circuit breakers in the load center (4, View
A).
2. Turn OFF (O) 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
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, 125/250VAC, 60A
2 Interlock Switch
3 Power Supply Cable (AC)
4 Load Center
4a Circuit Breaker: 50A Main
4b Circuit Breaker: 15A Engine Oil and Batteries
4c Circuit Breaker: 15A Hydraulic Tank
4d Circuit Breaker: 15A Engine Coolant
5 Hydraulic Tank Heater
6 Engine Coolant Heater
7 Engine Oil Heater
8 Battery Pad Heater (2)
9 Battery Pad Thermostat
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 MLC300 Specifications

General

Brand	Manitowoc
Model	MLC300
Category	Construction Equipment
Language	English