National Crane PUBLISHED 04-26-2019 CONTROL # 113-09 3-15
600E2 OPERATOR MANUAL OPERATING CONTROLS AND PROCEDURES
15. Turn Hydraulic Capacity Alert/RCL and Remotes/SLP
power switches OFF - in truck cab.
16. Disconnect hand control and store in truck, (If equipped
with hard wire remotes).
17. Start truck from inside of cab.
18. Stow outriggers.
19. Disengage P.T.O.
Hydraulic System Description
Solenoid Valve Assembly
Flow Control Valve in Inlet Section
1. Electrically controlled priority flow control valve which
can be remotely actuated to control the amount of oil
flow from the inlet to the bypass or the regulated ports.
a. Oil supply of 5 - 18 GPM is pumped to inlet port.
b. With electrical voltage up to 2 volts on the valve coil,
0 GPM of inlet oil is directed to the solenoid valve
sections and the remaining oil goes through the
bypass port and into the manual control valve, then
back to tank.
c. As voltage increases linearly from 2 to 9 volts. there
is a resulting linear increase of oil flow to the
solenoid sections to 18 GPM maximum. Any
remaining oil is directed back to tank through the
bypass port.
Solenoid Valve Sections
2. An electrically actuated directional control valve which
receives oil from the regulated port of the flow control
valve and directs it to the various crane functions.
a. When 12 VDC power is applied to any of the electro-
magnetic coils on the valve, the resulting force
pushes a spring centered spool from its neutral
position to allow oil flow out the work port opposite
the energized coil.
b. Oil flow through the solenoid valve is then increased
and decreased at the flow control valve to get
desired crane operating speeds.
3. Pressure relief valve (part of solenoid valve) in inlet
section.
a. Protects remote control hydraulic circuit from over
pressurization. Must be set to match crane manual
system pressure.
Shuttle Valve
Biased shuttle valves are located in the turn and hoist
functions on units equipped with remote hoist operation.
They block the open oil path through the main control valve
during remote operation.
RADIO REMOTE CONTROLS
The following sections describe the radio remote controls.
For detailed maintenance, installation, and troubleshooting
information about the radio remote controls, see the Service
Manual.
Safety
The radio remote control system offers an excellent solution
to safety, speed and ease of use, less downtime, and overall
maneuverability. Like any device, there are precautions and
common sense that work hand in hand to assure safe and
reliable operations.
Never allow any operation until the operator has read all
instructions and has become completely familiar with the
total system. Should anything happen unexplained,
unpredicted, or incorrect operation, immediately shut down
the complete system and investigate! This includes shutting
down all electronics, hydraulics, power take-offs, and
engines. Never resume operation until the problem has been
corrected!
Before attempting to start truck with remote control make
sure the drive train is in neutral.
When not using the remote control, disconnect power to the
remote control system with the selector switch installed in the
truck cab. This will prevent inadvertent operation of the crane
if the hand control is operated. Protect and monitor the hand
control unit to prevent damage and unplanned operation.
Always turn the truck ignition off and start the unit using the
remote hand control. This will allow the truck engine to be
turned off with the remote hand control. If the truck ignition is
on, the stop and emergency stop functions will not function.
Operation
General
The system consists of a Modulator/Transmitter) unit and a
receiver/decoder (Receiver) unit.The system operates on
the 5 RF channels in accordance with FCC Subpart D -
Lower Power Communications Devices, Part 15.117. Use of
this device is subject to the provisions of FCC Part 15.103. A
license is NOT required to operate this system.
DANGER
Starting truck engine with drive train engaged will cause
death or serious injury.
Do not start truck engine unless drive train is in neutral.
Fo
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