Manitowoc Published 12-05-17, Control # 035-23 1-19
18000 SERIVCE/MAINTENANCE MANUAL INTRODUCTION
GENERAL OPERATION
See Figure 1-14 for the following procedure.
This Service/Maintenance manual describes the standard
and optional equipment available for the crane. Disregard
any equipment your crane does not have. The 18000 MAX-
ER
™ attachment is not covered in this manual.
The Model 18000 operating system is an EPIC
®
(Electrical
Processed Independent Control) with Can-Bus technology.
The can-bus system uses multiple nodes that contain remote
controllers. The remote node controllers communicate with
node-1 master controller by sending information data
packets over a two-wire bus line. The data packets are
tagged with addresses that identify each system component.
With the can-bus system, the independently powered
pumps, motors, and cylinders provide controller driven
control logic, pump control, motor control, on-board
diagnostics, and service information. Crane information is
shown on digital display in operator’s cab.
A single diesel engine provides power to operate system
pumps through a pump drive transmission. In a closed-loop
hydraulic system, high-pressure hydraulic fluid from the
system pump drives a hydraulic motor. Pressure develops
within the closed-loop system while resistance to movement
of the load on motor is overcome. When movement begins,
pump volume displacement maintains motor speed. The
spent hydraulic fluid from motor outlet returns directly to
pump input. The crane closed loop systems are swing, right
travel, left travel, boom hoist, load drums 1 and 2, and luffing
jib hoist. The whip line hoist (Drum 3) and mast hoist (Drum
5) can be operated through diversion valves from main hoist
drums 1 or 2.
In this Service/Maintenance manual, “enabled” means
hydraulic fluid can flow in the system. Each hydraulic
solenoid valve is assigned an HS number for training
identification only.
COMMAND
SIGNAL
PILOT (PCP)
CONTROL
PRESSURE
PCP
EDC
POSITION
SWASHPLATE
HIGH-PRESSURE
MOTOR
HYDRAULIC
PUMP
HYDRAULIC
DRUM
CONTROLLER
NODE 1
MANIFOLD
SUCTION
PUMP
CHARGE
LOW-PRESSURE
FEEDBACK
MOTOR SPEED
FEEDBACK
PRESSURE
(MOTOR STROKE)
CONTROL SIGNAL
(PUMP STROKE)
CONTROL SIGNAL
CONTROL (EDC)
DISPLACEMENT
ELECTRONIC
HANDLE
CONTROL
PIPING
HYDRAULIC
MASTER
NODE 2 NODE 4
NODE 5
HANDLE
NODE 3
NODE 6
NODE 7
NODE 8
NODE 9
NODE 20NODE 5
LINE LEGEND (FOR ALL SCHEMATICS)
CASE RETURN PRESSURE HYDRAULIC
CONTROL OR PILOT PRESSURE HYDRAULIC, REGULATED AIR
LOW-PRESSURE HYDRAULIC, SIGNAL ELECTRICAL, EXHAUSTED AIR
NEGATIVE ELECTRICAL (GROUND)
HIGH-PRESSURE HYDRAULIC, POSITIVE ELECTRICAL, MANIFOLD AIR
HYDRAULIC SUCTION MANIFOLD LINE
NOT ACTIVE LINE OR CIRCUIT
NODE 2
FIGURE 1-14
18CSM1-115
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