Liebherr ER 954 C High-Rise 1380 Hydraulic Excavator Operating Manual SN 32643 - PDF DOWNLOAD

Page 108

Control and operation

Operating manual

Operating and control elements

S40 – Touch / Frequency commutation for hydraulic hammer When actuating this touch a pressure signal is send to the reversing hydraulic hammer, causing the hammer to change over to the second cycle frequency. S45 – Touch / Priority for special equipment If an hydraulic actuator ( cylinder, hydraulic motor, ) of a special equipment requires a constant oil flow, the speed of the remaining attachment movements can be reduced by depressing the push button S45 (control light inside the button must light). The necessary oil flow for the hydraulic actuator is maintained, even in case of simultaneous actuation of other attachment movements. S47 – Push button / Quick change adapter The push button S47 turns on the control circuit for the quick change adapter for the working tool. See also the section "Hydraulic quick change adapter for working tools (optional equipment)" in this chapter. S50 – Touch / Special control circuit supply Actuating this touch makes alive an additional control circuit for a special equipment. The green indicator light in the touch lights up to show that the additional servo control circuit is under pressure. S54 – Rotary switch / Unlocking of cylinder end position On some special working attachments, or on attachment showing particular cinematic capacities (as example on industrial attachment), certain movement(s) may be stopped automatically by electrical end switches. The main purpose of this movement limitation is to prevent possible damages due to components frequently reaching their end stops. See "Cutoff by end switches of attachment movements (option)" in this chapter. S76 – Touch / Travel parking brake This touch controls the travel parking brake on the machines fitted with a special undercarriage, or on machines mounted on a loading bridge, a wagon, ... When the red indicator light in the touch lights up, the travel brake is applied. On machines with a standard undercarriage, the travel brakes are controlled directly via the travel pedals and the touch S76 does not exist. S77 – Touch / Pressurized driver's cab When the touch is depressed, the green indicator light in the touch lights up and an air fan is started to maintain a slight pressurization inside the driver's cab. The entering of dust or not filtered air into the cab is then almost prevented. S79 – Touch / Flow divider for special attachment Should a certain user (cylinder, hydraulic motor, ...) has to be fed with a constant oil flow during the actuation of a special attachment, so the necessary oil flow can be reserved to give priority to this user while depressing the touch S79.The indicator light in the touch is then lighting up. The velocity of the other simultaneously actuated working movements is correspondingly reduced. S84-1 – Touch / Central lubrication This push button is mounted serially.

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ER 954 C - High-Rise / 11211691


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5Maintenance

1hr
pages 229-232, 234-313

4Malfunctions

10min
pages 217-225

Control and operation

4min
pages 210-211, 213-216

Control and operation

8min
pages 198-209

Control and operation

3min
pages 194-197

Control and operation

1min
pages 192-193

Control and operation

1min
pages 190-191

Control and operation

2min
pages 188-189

Control and operation

1min
pages 186-187

Control and operation

3min
pages 184-185

Control and operation

1min
pages 182-183

Control and operation

1min
pages 180-181

Control and operation

1min
pages 178-179

Control and operation

11min
pages 168-177

Control and operation

2min
pages 166-167

Control and operation

11min
pages 156-165

Control and operation

1min
pages 154-155

Control and operation

4min
pages 148-153

Control and operation

2min
pages 146-147

Control and operation

1min
pages 144-145

Control and operation

1min
pages 142-143

Control

3min
pages 138-141

Control and operation

12min
pages 126-137

Control and operation

2min
pages 124-125

Control and operation

1min
pages 122-123

Control and operation

10min
pages 110-121

Control and operation

3min
pages 108-109

Control and operation

1min
pages 106-107

Control and operation

2min
pages 104-105

Control and operation

1min
pages 102-103

Control and operation

2min
pages 100-101

Control and operation

1min
pages 98-99

Control and operation

3min
pages 94-97

Control and operation

6min
pages 90-93

Control and operation

2min
pages 86-89

Control and operation

1min
pages 84-85

Control and operation

1min
pages 82-83

Control and operation

1min
pages 78-79

Safety instructions, Signs on the machine

1min
pages 72-75

Safety instructions, Signs on the machine

6min
pages 64-69

Safety instructions, Signs on the machine

4min
pages 62-63

2Safety instructions, Signs on the machine

33min
pages 45-61

1Product description

1min
pages 9-14, 41
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