Swing Brake Engaged; Parking Brake Engaged; Light Malfunction; Emergency Stop - Manitowoc Grove RT770E Operator's Manual

OPERATING CONTROLS AND PROCEDURES
Item
28 Battery Charge Indicator
29 Voltmeter
30 Tachometer
31 Push Button Switch (not used)

Swing Brake Engaged

The Swing Brake Engaged Indicator (1) (Figure 3-6) is
located in the steering column gauge display. It illuminates
red when the Turntable Swing Motor Swing Brake is
engaged preventing the rotation of the crane superstructure.

Parking Brake Engaged

The Parking Brake Engaged Indicator (2) (Figure 3-6) is
located in the steering column gauge display. It illuminates
red when the crane parking brake is engaged.

Light Malfunction

The Light Malfunction Indicator (3) (Figure 3-6) is located in
the steering column gauge display. It illuminates amber when
the crane headlights are malfunctioning.

Emergency Stop

The Emergency Stop Indicator (4) (Figure 3-6) is located in
the steering column gauge display. It illuminates red when
the Emergency Stop Switch is pushed in (refer to Emergency
Stop Switch, page 3-17) and a warning buzzer will sound.

Hydraulic Oil High Temperature

T h e H y d r a u l i c O i l H i g h Te m p e r a t u r e I n d i c a t o r ( 5 )
(Figure 3-6) is located in the steering column gauge display.
It illuminates red when the hydraulic oil temperature exceeds
93°C (200°F); a warning buzzer will also sound. When this
indicator illuminates, set down the load as soon as possible,
turn off the engine and try to find the cause of the high
hydraulic oil temperature.
3-10
Description
Published 04-04-2017, Control # 446-09
RT770E OPERATOR MANUAL

Transmission Warning

The Transmission Warning Indicator (6) (Figure 3-6) is
located in the steering column gauge display. It illuminates
red during high transmission oil temperature conditions. A
warning buzzer will also sound.

Low Steer Pressure (Optional on CE Units)

The Low Steer Pressure Indicator (7) (Figure 3-6) is located
in the steering column gauge display. It illuminates red when
the hydraulic pressure is low. A warning buzzer will also
sound.

Left Turn Signal Indicator

The Left Turn Signal Indicator (8) (Figure 3-6) is located in
the steering column gauge display. It is a green arrow light
that flashes when the turn signal lever is pushed down or the
HAZARD light switch is positioned to ON.

Low Brake Pressure

The Low Brake Pressure Indicator (9) (Figure 3-6) is located
in the steering column gauge display. It illuminates red when
the pressure in the dual accumulator charge valve falls
below normal operating requirements. A warning buzzer will
also sound.

Electronic Module Indicator

The Electronic Module Indicator (10) (Figure 3-6) is located
in the steering column gauge display. If any of the electronic
modules are off-line and not communicating with the system
the indictor illuminates red.

Electronic System Diagnostic

The Electronic System Diagnostic Indicator (11) (Figure 3-6)
is located in the steering column gauge display. The indicator
is a red light that is used for troubleshooting the CAN bus
system.