
Page 74/131
July 2021
HE18 | User manual
3.9.9
Operating the extra circuit (option)
The extra circuit is for operating attachments.
CAUTION
Only attachments approved by EUROTRAC may be used. The attachments must be installed and used in accordance
with their operating instructions.
CAUTION
When using a hydraulic hammer or another attachment for demolition work where the material (e.g. asphalt) is
removed and may fly off uncontrolled, personal protective equipment is required (safety shoes, safety helmet,
safety goggles, hearing protection and possibly a dust mask). Using stone damage protection is recommended
(protector). The windshield of excavators with a cab must be closed.
NOTE
The capacity data of the extra circuits can be found in section
"Technical data" (page 32)
.
CAUTION
Before working on the extra circuit connections, make sure the pressure in the hydraulic system (
page 76
) and the
extra circuit connections (
page 75
) has been released. Depending on the operating settings, the direct return
changeover valve must be in the corresponding position (
page 76
).
CAUTION
If no attachments have been installed, the extra circuit pressure switch may not be operated.
NOTE
If the extra circuit has not been used for some time, dirt particles may have gathered on the pipe connections.
Before attachments are installed, about 0.1 liters of hydraulic oil must be drained from each connection.
ENVIRONMENTAL INFORMATION
The drained hydraulic oil must be caught and disposed of in accordance with the current environment protection
provisions.
•
Start the engine (
page 58
) and let it warm up until operating temperature is reached.
Содержание HE18
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