Manitowoc 777 User Manual

Reference Only
OPERATING CONTROLS AND PROCEDURES 777 OPERATOR’S MANUAL
3-48 Published 10-01-12, Control # 044-05 v2
Table 3-5
System Faults
Listed below are faults which turn on system fault alert (red light and beeper). When the alert comes on, the SYSTEM
FAULT group of the digital display will indicate which fault has occurred; take corrective action.
The beeper sounds intermittently (I) or continuously (C) as indicated in alert column.
[2] Optional item.
[3] Angles at which boom stops vary with attachment. See Operating Controls in the section for specifications.
REMOTE ACTIVE FAULT Control in cab inoperable.
Do not attempt to operate controls in cab
when operating counterweight remote
control.
DATALOGGER FAULT Does not affect operation.
Fault will appear on screen for 60
seconds at startup if there is a
datalogger problem (most likely caused
by real time clock).
Display Reading Alert Cause of Fault Function Response
BOOM ANGLE SENDER I
Sender output voltage 0 volts or
above 9.7 volts. Fault not active
when crane is in SETUP mode.
All functions operable, but BOOM ANGLE and BOOM TO
LUFFING JIB ANGLE display will be faulty; correct cause
of transducer fault as soon as possible.
ENGINE OIL PRESSURE I
Oil pressure below 15 psi (1.0
bar).
Does not affect operation. Correct cause of low oil
pressure as soon as possible to prevent engine damage.
ENGINE TEMPERATURE I
Engine coolant temperature
above 205°F (96°C).
Does not affect operation. Correct cause of overheating
as soon as possible to prevent engine damage.
HYD TANK FLUID TEMP I
Oil temperature in hydraulic tank
above 180°F (82°C).
Does not affect operation. Reduce loads and/or speeds to
allow oil to cool.
HYD TANK FLUID LEVEL I
Hydraulic oil at CAUTION LOW
LEVEL indicated on tank gauge.
Does not affect operation. Fill tank as soon as possible.
HYDRAULIC FILTER 1 I
Corresponding filter is dirty. All functions operable. Replace filter as soon as possible.
HYDRAULIC FILTER 2 I
HYDRAULIC FILTER 3 I
HYDRAULIC FILTER 4 I
HYDRAULIC FILTER 5 I Strainer is dirty.
All functions operable. Clean strainer in tank on crane as
soon as possible.
LUFF JIB ANGLE SEND
[2]
I
Sender output voltage 0 volts or
above 9.7 volts. Fault not active
when crane is in SETUP mode.
All functions operable, but LUFFING JIB ANGLE and
BOOM TO LUFFING JIB ANGLE display will be faulty;
correct cause of transducer fault as soon as possible.
MOTOR TEMPERATURE I
Temperature of hydraulic motor
240°F (116°C) or higher.
All functions operable. Stop operating or reduce speed
and load of corresponding motor until temperature lowers
to normal. To determine which motor is overheating,
disconnect and connect DIN connector at switch on each
motor. Fault on screen will turn off when proper DIN
connector is disconnected.
Display Reading Function Response Corrective Action

Manitowoc 777 Specifications

General

Brand	Manitowoc
Model	777
Category	Construction Equipment
Language	English