HLA
– Double acting- hydraulic linear actuator
Use and maintenance manual
© Copyright by BIFFI Italia. All right reserved.
Pag. 13
Contents may change without notice
2.5 HYDRAULIC CONNECTIONS
Check that the values of hydraulic supply available are
compatible with those reported on the identification plate of the
actuator.
The connections should be made by qualified staff.
Use pipes and connections appropriate as for type, material and
dimensions.
Use motor fluid with purity degree ISO 4406 17/14 or NAS 1638
Class 8 (AS4059 Class 4B-F).
For special applications the lower contamination degree is
required. Please refer to the documentation supplied.
❑
Properly deburr the ends of rigid pipes
❑
Properly clean the interior of pipes sending through them plenty of
the supply fluid used in the system.
❑
Mould and fasten the connection pipes so that no irregular strains at
entries or loosening of threaded connections occur.
❑
Make the connections according to the operating diagram.
❑
Check the absence of leakages from hydraulic connections. If
necessary tighten the nuts of the pipe-fittings
2.6
ELECTRICAL CONNECTIONS (IF ANY)
Use components appropriate as for type, material and
dimensions
The connections should be made by qualified staff
Before carrying out any operation, cut line power off
Safety provisions as per CEI 64-8 regulation should be
complied with (same as IEC 60364).
Remove plastic plugs from cables entries
❑
Screw firmly the cable glands.
❑
Introduce connection cables.
❑
Make the connections in compliance with applicable wiring diagrams
on the documentation supplied.
❑
Screw the cable gland.
❑
Replace the plastic plugs of unused entries with metal plugs.
