PDF Operation & Maintenance Manual Komatsu PC5500-6 Hydraulic Mining Shovel - 755 KB
This is the factory operation and maintenance manual for the immense Komatsu PC5500-6 Hydraulic Mining Shovel.
It provides operators and service personnel with critical information on safe operation, system controls, and preventative maintenance schedules.
Adhering to the procedures in this manual is key to the machine's productivity and reliability.
It is an essential document for any mining site utilizing this powerful equipment.
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--- Page 1 ---
Operation & Maintenance
Manual
HYDRAULIC MINING SHOVEL
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INTRODUCTION 1.6 TABLE OF CONTENTS
3.15 PARKING THE SHOVEL ............................................................................................................... 263
3.16 STOPPING THE ENGINES ............................................................................................................ 264
3.16.1 RELIEVE PRESSURE IN THE HYDRAULIC SYSTEM .................................................... 267
3.17 OPERATION OF THE LUBRICATION SYSTEM ........................................................................... 268
3.17.1 CENTRAL LUBRICATION SYSTEM -CLS- FOR SUPERSTRUCTURE AND ATTACHMENT
268
3.17.2 SWING CIRCLE PINION LUBRICATION SYSTEM ”SLS” ............................................... 270
3.18 FIRE DETECTION AND SUPPRESSION SYSTEM ...................................................................... 272
3.18.1 HIGH LEVEL ALARM ”FIRE” ............................................................................................ 275
3.18.2 ENGINE SHUT-DOWN THROUGH FUEL SHUT-OFF SOLENOID VALVE ..................... 275
3.18.3 ACTUATION MODES OF THE FIRE SUPPRESSION SYSTEM ..................................... 275
3.18.4 INDICATION OF OPERATIONAL MODES AT CONTROL MODULE, AFTER AUTOMATIC
ACTUATION OF THE FIRE SUPPRESSION SYSTEM ................................................... 277
3.18.5 LOCATION OF THE EXTINGUISHING AGENT TANK ASSEMBLIES AND EXPELLANT GAS
CARTRIDGES ON POWER HOUSE ROOF ..................................................................... 279
3.19 TRANSFER PUMP FOR HYDRAULIC OIL ................................................................................... 280
3.19.1 OPERATING THE TRANSFER PUMP ............................................................................. 281
3.19.2 FUNCTIONS OF THE TRANSFER PUMP ....................................................................... 283
3.20 CENTRAL REFILLING SYSTEM ................................................................................................... 286
3.20.1 SYSTEMS CONNECTED TO THE REFILLING SYSTEM ................................................ 287
3.20.2 OPERATING THE HYDRAULIC SERVICE ARM ............................................................. 289
3.20.3 RECEIVER PANEL WITH MONITOR BOX ...................................................................... 291
3.20.4 REFILLABLE GREASE CONTAINERS OF THE AUTOMATIC LUBRICATION SYSTEMS ...
297
3.21 WORK ON THE LOADER ATTACHMENT .................................................................................... 298
3.22 TRANSPORTATION AND LIFTING OF THE
SHOVEL ......................................................................................................................................... 299
3.22.1 DISASSEMBLING OF THE SHOVEL ............................................................................... 299
3.22.2 TRANSPORTATION AND LIFTING .................................................................................. 299
3.23 RETRIEVAL PROCEDURE ........................................................................................................... 300
3.24 SHOVEL STORAGE ...................................................................................................................... 301
3.24.1 PREPARING FOR STORAGE .......................................................................................... 301
3.24.2 ONE MONTH REPETITIVE SERVICE PERIOD ............................................................... 302
3.24.3 SIX MONTH REPETITIVE SERVICE PERIOD ................................................................. 302
3.24.4 PREPARING FOR OPERATION ...................................................................................... 303
3.25 TROUBLE SHOOTING .................................................................................................................. 304
3.25.1 ENGINE ............................................................................................................................. 304
3.25.2 HYDRAULIC SYSTEM ...................................................................................................... 305
3.25.3 FINAL DRIVES AND SWING GEAR ................................................................................. 306
3.25.4 CRAWLER TRACKS ......................................................................................................... 306
11
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SAFETY 2.1 SAFETY INSTRUCTIONS
● Always keep at a distance from the edges of building pits and
slopes.
● Avoid any operation that might be a risk to machine stability.
● Never travel across slopes; always keep the working equip-
ment and the load close to the ground, especially when trav-
elling downhill.
● On sloping terrain always adapt your travelling speed to the
prevailing ground conditions. Never change to a lower gear
on a slope but always before reaching it.
● Before leaving the driver’s seat always secure the machine
against inadvertent movement and unauthorized use.
SPECIAL WORK IN CONJUNCTION WITH UTILIZA-
TION OF THE MACHINE AND MAINTENANCE AND
REPAIRS DURING OPERATION; DISPOSAL OF
PARTS AND CONSUMABLES
● Observe the adjusting, maintenance and inspection activities
and intervals set out in the Operation,- Lubrication and Main-
tenance Manual, including information on the replacement of
parts and equipment. These activities may be executed by
skilled personnel only.
● Brief operating personnel before beginning special operations
and maintenance work, and appoint a person to supervise the
activities.
● In any work concerning the operation, conversion or adjust-
ment of the machine and its safety-oriented devices or any
work related to maintenance, inspection and repair, always
observe the start-up and shut-down procedures set out in the
Operation,- Lubrication and Maintenance Manual and the
information on maintenance work.
● Ensure that the maintenance area is adequately secured.
● If the machine is completely shut down for maintenance and
repair work, it must be secured against inadvertent starting
by:
❍ locking the principal control elements and removing the
ignition key and/or
❍ attaching a warning sign to the main switch
● Carry out maintenance and repair work only if the machine is
positioned on stable and level ground and has been secured
against inadvertent movement and buckling.
● To avoid the risk of accidents, individual parts and large
assemblies being moved for replacement purposes should be
carefully attached to lifting tackle and secured. Use only suit-
able and technically perfect lifting gear and suspension sys-
tems with adequate lifting capacity. Never work or stand
under suspended loads.
21
--- Page 5 ---
SAFETY 2.1 SAFETY INSTRUCTIONS
INSTRUCTIONS FOR USE
Open the lock, lift the harness by the catch hook (C), the blue
straps (leg straps J) are below. The harness is being put on just
like a jacket. Pull the belly strap (E) through the lock, as shown on
the illustration, and secure it.
By closing the breast strap, you avoid the shoulder straps to side-
slip. Bring the leg straps (J) around the legs to the front, pull them
in, as shown in the illustration, and tighten them. Adapt the har-
ness to body form, seeing to perfect fit, in particular that the
catching hook (C) be in the center of the back.
The safety harness should belong to its wearer personally.
The safety harness should only be used together with connectors
acc. to EN 354, and fall arrest acc. to EN 355, or fall protection
devices acc. to EN 360.
The attachment point for the safety harness should be above the
wearer, and the carrying capacity of the attachment point should
be sufficient to correspond with the minimum carrying capacity
acc. to EN 795.
31
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OPERATION 3.2 CONSTRUCTION OF THE SHOVEL
Legend for illustration Z22875
(1) Final drive, hub type travel gear
(2) Crawler carrier
(3) Track roller
(4) Carrier roller
(5) Guide wheel
(6) Swing circle guard
(7) Hydraulically operated access ladder, see page 46 for more information
(8) Hydraulic cylinder for access ladder
(9) Control switch for access ladder
(10) Battery main switches
(11) Emergency engine shut down switch and manual actuator switch for the fire suppression system,
if so equipped.
CAUTION
Never stop the engines from a full load except in case of emergency.
If a hot engine is shut down without previous idling period of three to five minutes, the tem-
perature in certain engine parts rising sharply after the cooling system ceases to function.
The resulting thermal stress, especially in the turbochargers, may cause serious damage.
(12) Radiator of rear engine, designation number 1
(13) Radiator of front engine, designation number 2
(14) Sliding window of operator’s cab, see page 54 for more information
(15) Emergency escape ladder
(16) Exhaust muffler
(17) Engine air cleaners
(18) Hydraulically driven grease pump of the Swing circle pinion Lubrication System (SLS)
(19) Hydraulically driven grease pump of the Central Lubrication System (CLS)
(20) Counterweight
WARNING
The chambers of the counterweight are filled with a mixture of concrete, granulated ore
and steel pellets. This mixture can create explosive gases which will accumulate in the
chambers of the counterweight. Before any welding, flame-cutting, grinding or drilling pro-
cedures are carried out on the counterweight it is vital to expel these gases from the coun-
terweight chambers. Failure to properly expel the gases from the counterweight chambers
can result in an explosion with serious personal injury or death.
Follow the instructions given in PARTS & SERVICE NEWS No. AH04518 for expelling the
gases from the counterweight chambers.
41
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OPERATION 3.2 CONSTRUCTION OF THE SHOVEL
Legend for illust. Z24090
(1) Sliding window, serves also for emergency exit
REMARK
If the operator’s cab is equipped with external
metal sun visors, disengage the four catches and
push out the sun visor panel.
(2) Release lever for hinged railing bar (3)
(3) Hinged railing bar
(4) Rigidly mounted emergency escape ladder. The rig-
idly mounted emergency escape ladder with rope
ladder extension provides the means to go down to
the ground.
(5) Rope ladder. The upper end of the rope ladder is
fixed onto the lower rung of the rigid escape ladder
(4) by means of the fasteners (6), see detail (X). The
lower end of the rope ladder is fixed on brackets (8)
and secured with rubber fasteners (7), see section
(A-A).
(6) Hooks for fastening the rope ladder onto the rigid
ladder (4)
(7) Rubber fasteners for rope ladder in lifted position
(8) Bracket for rope ladder in lifted position. The lower
rung of the rope ladder is hooked up into the brack-
ets (8)
Using the emergency escape ladder
In case of emergency with normal walkways obstructed use
escape ladder (4) and (5) for leaving the machine. Proceed as fol-
lows:
1. Move up lever (2) and pull out.
2. Open the hinged railing bar (3).
3. Unhook fasteners (7) and take out rope ladder rung from
brackets (8).
4. Let the rope ladder fall down to the ground. The upper end of
the rope ladder is fixed onto the lower rung of the rigid ladder
(4).
5. Use the rigid ladder (4) and then the rope ladder (5) for leav-
ing the shovel.
51
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OPERATION 3.2 CONSTRUCTION OF THE SHOVEL
Operator’s Seat Adjustment
Before operating the Shovel adjust the seat and mirrors for Oper-
ators maximum comfort, visibility, and complete control of the
Shovel.
Legend for illust. (Z 21420):
(1) Seat suspension adjustment (firm to soft ride)
(2) Height adjustment
(3) Seat depth adjustment
(4) Seat cushion tilt adjustment
(5) Fore/aft adjustment
(6) Not used on this model
(7) Control lever carrier
(8) Headrest (optional)
(9) Seat heater switch (optional)
(10) Lumbar support adjustment
(11) Armrest, foldable
(12) Armrest adjustment
(13) Backrest adjustment
(14) Fore/aft isolator
Seat belt (not shown)
WARNING
● Use seat belt in accordance with the local safety regula-
tions and laws.
● Check condition and fastening of the seat belt. Replace
any worn or damaged part of the seat belt system.
● To ensure proper functioning of the seat belt replace the
seat belt and securing parts after every three years.
For more Information, refer to the separate Operating Instruction
Manual ”AIR SUSPENSION SEAT” in volume 2 binder.
61
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OPERATION 3.2 CONSTRUCTION OF THE SHOVEL
Eliminator Engine Oil Filtration System
Legend for illust. Z 21541 (schematic illustration)
(A) Oil inlet from engine (100%) (E) Oil flow to engine oil pan (5%)
(1) Stainless steel filter removes particles as
(B) Oil outlet to engine (95%)
small as 20 µm
(2) Centrifugal separator removes particles up to
(C) Backflush oil (5%) for cleaning the filter
a size of 2 µm
(D) Oil flow to centrifuge (5%)
71
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OPERATION 3.3 OPERATOR’S CAB - CONTROLS
3.3.3 OPERATOR’S CONSOLE
Legend for illustration Z25500
(1) Analog gauges, see page 83 for more information
(2) Text display with key board of the Electronic Control
and Monitoring System (ECS). Refer to page 92 for
more information.
(3) Ashtray
(4) Switch board, see page 83 for more information
(5) Switch for adjustment of left and right cab mirror
(6) Control unit for air conditioning and heating, see
page 198 for more information
(7) Cigarette lighter
(8) Plug sockets 24V DC
(9) Radio
(10) Switch board lighting with flexible arm
CAUTION
Make sure the cab door is always closed when working with
the Shovel.
Secure the door in open position with the locking device pro-
vided.
81
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OPERATION 3.3 OPERATOR’S CAB - CONTROLS
3.3.5 CONTROL MODULE FOR AUXILIARY CAB HEATER
Special Equipment
Legend for illust. Z225502
(5) Control module for the engine independent auxiliary
cab heater.
This module is used for switching ON and OFF the
auxiliary cab heater during operation of the shovel
with the Diesel engines running, and for pre-selec-
tion of heater start times and duration of heating
periods. For detailed setting instructions of the con-
trol module refer to the separate operating instruc-
tion sheet in volume 2 binder.
(6) Button for actual time indication
(7) Button for preselection of heating time
(8) Button for heating indication
(9) Button for settings backwards
(10) Button for settings forward
(11) Not used
(12) Display shows the operating condition of the auxil-
iary cab heater
91
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OPERATION 3.4 ELECTRONIC MONITORING AND CONTROL SYSTEM ECS
3.4.2 OPERATING THE ELECTRONIC MONITORING SYSTEM
1.0 TEXT DISPLAY (A) with integrated KEY BOARD (B)
illust. Z25237
After switching on the Shovel’s key operated main switch, the fol-
lowing introductory messages will be displayed on screen (A):
1st. # Please be Safety Conscious when working!
This message will be displayed for approximately 10 seconds.
2 nd . |QUI| Did you check the Operating Safety of the
Shovel?
.
Press the ”QUI” key (10) to acknowledge this message.
3rd. |QUI| Did you do Maintenance according to the Ser-
vice Literature?
Press the ”QUI” key (10) to acknowledge this message. Thereaf-
ter the basic ECS display normally automatically appears on the
screen (A) if no information - or fault messages are present.
Present information - or fault messages overwrite the introductory
messages no. 2 and 3.
-0- Date h: M1 *1) 1/min:
Time M2 *2) 1/min:
*1) M1 = Short form for Rear Engine on counterweight
side designated as Engine 1.
*2) M2 = Short form for Front Engine on Operator’s cab
side designated as Engine 2.
All messages related to one of the two engines, their connected
cooling systems and pump distributor gears are identified by the
figure 1 or 2.
Example of an engine related message:
Fault No. 560: $h: Shut down of engine 1: oil pressure at low idle too
(563) low
Help: Message through sensor B1-1.
This message applies to the rear engine on counterweight side
”Engine 1”.
101
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OPERATION 3.4 ELECTRONIC MONITORING AND CONTROL SYSTEM ECS
Emergency Indication of Operating Conditions.
The ECS system is equipped with an emergency indication. In
case the text display (A) fails to work, it indicates faults in impor-
tant operating systems of the Shovel. The indication is effected by
means of LED’s at the Programmable Logic Controller ”PLC”
installed in the cab base. Refer to page 208 for the location of the
”PLC”.
The following faults are indicated:
Fault: LED No.:
The ECS system is by-passed (By-pass switch S27 actuated) H30
Start of engine 1 and/or engine 2 blocked, resp. engine shifted to low idle
H31
speed by one or more of the six high pressure filters.
NOTICE
The LED ”H31” monitors all six high pressure filters. Refer to
page 217 for description of the diagnostic codes flashed out by LED
”H31”.
Coolant pressure H33
Coolant temperature H34
Engine oil pressure H36
Start of both engines blocked, resp. engine shut down,
H37
due to closed main shut-off (gate) valve hydraulic tank
Faulty monitor channel for hydraulic oil temperature H38
Too low hydraulic oil level! Stop the engines H39
Faulty monitor channel engine speed H112
Emergency shut down switch actuated H116
Engine shutdown from ground man (if so equipped) H135
111
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OPERATION 3.4 ELECTRONIC MONITORING AND CONTROL SYSTEM ECS
How to print out Contents of Record (PROTOCOL) Memory:
Print out the complete Contents of Record (PROTOCOL) Memory
Display:
Press until the maximum amount of
7 6 3
entries (39) is reached
PR O DAT A OU T DOWN
Print from the last > 1< PRO entries
page no all * PRO has 39 entries *P*
The complete PROTOCOL is now being
6 6
printed out.
DAT A OU T DAT A OU T
Distinctive marks for ”OLD” and ”NEW” entries:
New entries, not yet displayed / called up / printed or downloaded
are marked with *P*.
After being displayed / called up / printed or downloaded the
marking will change to -P-.
Print out the last Entries of the Record (PROTCOL) Memory
1st. Possibility - The last (X) Entries under consideration
of all Messages
(X) = desired number of the last entries e.g. 10 (the last 10 entries
of 39 total entries)
Press until the desired nos. of
7 6 3
entries are reached,e.g. 10.
PR O DAT A OU T DOWN
The record memory with the last 10
6 6
entries is now being printed out.
DAT A OU T DAT A OU T
Print from the last > 10<PRO entries
page no all * PRO has 39 entries *P*
121
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OPERATION 3.4 ELECTRONIC MONITORING AND CONTROL SYSTEM ECS
Menu Control with Key Switch (C) and Key Group (D)
Display of Menu Options, see Menu Control Chart I (Z23063)
EXAMPLE: Display of TRUCK COUNTER READING, starting
from basic display on level -0-
Proceed as follows:
1. Press the ”QUI” key (10), the menu level -1- with the current
truck counter reading appears on the display.
2. If you want to reset the counter, press the ”QUI” key (10)
again. Menu level -2- appears on display. Use key (12) for
setting the counter to zero.
3. Press ”RET” key (9) twice for return to the standard display,
level -0-.
EXAMPLE: Display of LUBRICATION SYSTEMS CYCLE
COUNTER READINGS, starting from basic display on level -0-
Proceed as follows:
1. Press the ”QUI” key (10), the menu level -1- with the starting
item truck counter reading appears on the display.
2. Press key (12) once the Central lubrication system cycle
counter reading appears on display. By pressing key (12)
again the swing ring gear cycle counter reading is displayed.
3. For returning to the standard display level -0- press ”RET” key
(9).
REMARK
Changing of the lubrication cycle counter settings can be car-
ried out in the main group SERVICE under the section *SET-
TINGS*, see also menu control chart III.
EXAMPLE: Display of Service *POWER CHECK* starting from
basic display on level -0-
1. Press the “QUI” key (10), the menu level -1- with the starting
item truck counter reading appears on the display.
2. Press key (12) three times the menu item *SERVICE*
appears on the display.
3. Press the “QUI” key (10), Service *LANGUAGE* appears.
4. Press key (12) once the menu item Service *POWER
CHECK* appears on the display.
5. Press the “QUI” key (10), the menu level -3- with the starting
item Power check *DISPLAY* appears on the screen.
Continue according to description on next page, menu control
chart II.
131
--- Page 16 ---
OPERATION 3.4 ELECTRONIC MONITORING AND CONTROL SYSTEM ECS
Menu Control with Key Switch (C) and Key Group
(D)
Display of Menu Options
Example: Display of INPUTS-OUTPUTS, starting from basic
display on level -0-, see Menu Control Charts I and IV (Z 23066).
The main group *INPUTS-OUTPUTS* is basically used for Test-
ing procedures through authorized service staff and therefore
locked during normal operation. Access to the *INPUTS-OUT-
PUTS* can be obtained in the main group *SERVICE* as
described below.
Proceed as follows:
1. Press the ”QUI” key (10), the menu level -1- *TRUCKS*
appears on the display, see Chart I.
2. Press key (12) three times, the main group *SERVICE*
appears on display.
3. Press key (10), the menu level -2- with the starting group
*Language* appears on the display.
4. Press key (12) four times, the group *INPUTS-OUTPUTS
ON/OFF* appears on the display.
5. Press key (10), the menu level -3- with Menu item INPUTS-
OUTPUTS Condition: 0 (OFF)” is displayed.
6. Press key (12), *OPERATE KEY SWITCH* appears on the
display.
7. Operate key switch (C) ”Condition: 0 (OFF)” appears on the
display.
8. Press key (12) to change the condition from ”0” to ”1 (ON)”
Now access to main group *INPUTS-OUTPUTS* is possible.
9. Press the ”RET” key (9) two times for returning to the menu
level -1-. The main group *SERVICE* appears on the display.
10. Press key (12), for display of the main group
"INPUTS-OUTPUTS*.
All menu levels and items within the main group INPUTS-
OUTPUTS are now accessible by means of key group (D),
refer to menu control charts on the following pages.
141
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OPERATION 3.4 ELECTRONIC MONITORING AND CONTROL SYSTEM ECS
Data Transfer from Protocol and Statistics Memory
to various Downloading Equipment
The illustration (Z 20731) shows typical arrangement of several
downloading equipment connected to the text display interface
plug socket (X27).
Legend for illust. (Z 20731)
(1) Text display unit on instrument panel (E35)
(2) Plug socket (serial interface X27) for connecting
data transfer cable to units (4, 5, 6 or 9)
(3) Plug socket for connecting current supply cable to
units (5 or 6)
(4) MODULAR MINING field computer system ”MMS”
(5) Printer
(6) Memory Card System ”MCS”. As a special equip-
ment, this system can also be installed in the instru-
ment panel ex works.
(7) Memory card
(8) Protective box for memory card
(9) Laptop or PC
(10) Soft- and hardware package for PROSTAT operation
program
(11) Data transfer cable (VL3)
(12) Adapter for 25 pin interface on PC or laptop
(13) 3,5” disk PROSTAT software
(14) Instruction manual PROSTAT (PARTS & SERVICE
NEWS No. AH02512)
(15) Change-over switch for connecting the internal out-
put channel to plug socket (2) or to the onboard
MCS system (6) if so equipped
(E6) Programmable Logic Controller ”PLC”
(VL4) Data transfer cable to Memory card system (6)
(VL5) Current supply cable to Memory Card System (6)
(VL6) Data transfer cable to printer (5)
(VL7) Current supply cable to printer (5)
(VL8) Data transfer cable to field computer system (4)
REMARK
The downloading units shown in illust. (Z 20731) are special
equipment.
More information to these units on request.
151
--- Page 18 ---
OPERATION 3.4 ELECTRONIC MONITORING AND CONTROL SYSTEM ECS
Level 3: Service / MESSAGES ON / OFF
- 3 - Messages
OPERATE KEY SWITCH
- 3 - Messages
⎜ 0 ⎜ 1 ⎜ Condition :
Level 3: Service / EVALUATION ON / OFF
- 3 - Evaluation
OPERATE KEY SWITCH
- 3 - Evaluation
⎜ 0 ⎜ 1 ⎜ Condition :
Level 2: Inputs - Outputs
- 2 - Inputs - Outputs
* ANALOG-INPUTS *
- 2 - Inputs - Outputs
* DIGITAL-INPUTS *
- 2 - Inputs - Outputs
* DIGITAL-OUTPUTS *
161
--- Page 19 ---
OPERATION 3.4 ELECTRONIC MONITORING AND CONTROL SYSTEM ECS
Level 4: Inputs - Outputs / DIGITAL-OUTPUTS
/ Y53-1 Y53-2 GEAR OIL COOLER 1 / 2
BACK - PRESSURE
-4- Output signals
| OPERATE KEY SWITCH
-4- Cooler 1 Y53-1 (A13.3):
| 0 | 1 | Cooler 2 Y53-2 (A13.4):
Level 4: Inputs - Outputs / DIGITAL-OUTPUTS
/ Y101 VALVE OIL COOLER BACK-PRESSURE
-4- Output signals
| OPERATE KEY SWITCH
-4- Valve oil cooler back-pressure
|0|1| Y101 (A5.4):
Level 4: Inputs - Outputs / DIGITAL-OUTPUTS
/ Y124a VALVE SERVICE ARM LIFT
-4- Output signals
| OPERATE KEY SWITCH
-4- Valve service arm lift
|0|1| Y124a (A5.5):
Level 4: Inputs - Outputs / DIGITAL-OUTPUTS
/ Y124b VALVE SERVICE ARM LOWER
-4- Output signals
| OPERATE KEY SWITCH
-4- Valve service arm lower
|0|1| Y124b (A5.6):
171
--- Page 20 ---
OPERATION 3.4 ELECTRONIC MONITORING AND CONTROL SYSTEM ECS
Fault No. 824:
$h: Faulty pressure switch for leak oil filter
(827)
Closed contact of pressure switch B25 for leak oil filter with
Help: switched off Engine.
- Check pressure switch and cables.
Fault No. 830:
$h: No 24 V voltage at circuit breaker F13
(833)
No 24 V behind circuit breaker F13.
Help: - Check circuit breaker F13.
- Check current supply to circuit breaker.
Fault No. 836 $h: Faulty pressure switch of fan drive oil filter for oil
(839) cooler 1
Closed contact of pressure switch B28-1 for oil cooler fan
Help: drive filter with switched off engine.
- Check pressure switch and cables.
Fault No. 842: $h: Hydraulic oil far below operating temperature. Wait
(845) for warm-up phase!
The machine was taken into operation although the start
Help: viscosity was not attained.