BIFFI HLAS User manual
Installation, Operation and Maintenance Manual
MAN 620 Rev. 5
February 2022
Bif HLAS
Single Acting Spring-Return Hydraulic Linear Actuator
Copyright © Bif. The information in this document is subject to change without notice. Updated data sheets can be obtained from our website www.bif.it or from your nearest Bif Center:
Bif Italia s.r.l. - Strada Bif 165, 29017 Fiorenzuola d'Arda (PC) – Italy PH: +39 0523 944 411 – bif_italia@bif.it
February 2022
Installation, Operation and Maintenance Manual
MAN 620 Rev. 5
Revision Details
Revision Details
Revision Details
Rev. Date Description Prepared Checked Approved
5 February 2022 General update (Migration to new template)
4 February 2019 Updated data plate Sassi Oreci Vigliano
3April 2016 Updated applicable regulation (chapter 1.1.1) Ermanni Oreci Vigliano
2July 2012 General update Ermanni Stoto Vigliano
1 June 2010 General update Ermanni Stoto Vigliano
0May 1999 Document release Lazzarini Aliani Ziveri
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Table of ContentsInstallation, Operation and Maintenance Manual
MAN 620 Rev. 5 February 2022
Table of Contents
Table of Contents
Section 1: General Warnings
1.1 Generalities................................................................................................... 1
1.1.1 Applicable Regulation ........................................................................ 1
1.1.2 Terms and Conditions......................................................................... 1
1.2 Identication Plate ........................................................................................ 2
1.3 Introducing the Actuator............................................................................... 2
1.4 Data Sheet .................................................................................................... 3
Section 2: Installation
2.1 Checks upon Actuator Receipt.......................................................................... 4
2.2 Actuator Handling......................................................................................... 4
2.3 Storage ......................................................................................................... 6
2.4 Actuator Assembly on the Valve.................................................................... 6
2.4.1 Types of Assembly.............................................................................. 6
2.4.2 Assembly Procedure........................................................................... 6
2.5 Hydraulic Connections................................................................................ 10
2.6 Electrical Connections (If Any)..................................................................... 11
2.7 Commissioning........................................................................................... 11
Section 3: Operation and Use
3.1 Operation Description................................................................................. 12
3.2 Residual Risks.............................................................................................. 13
3.3 Operations.................................................................................................. 13
3.3.1 Emergency Manual Operation (MHP) ................................................13
3.3.2 Remote Control Operations ..............................................................14
3.4 Calibration of the Angular Stroke .................................................................15
3.5 Calibration of Microswitches (Bif Limit Switch Box Only)............................ 18
3.6 Calibration of the Operation Time .............................................................. 20
Section 4: Operational Tests and Inspections
Operational Tests and Inspections......................................................................... 21
Section 5: Maintenance
5.1 Periodic Maintenance ................................................................................. 22
5.1.1 Check and Restore Oil Level in the Manual Handpump ......................23
5.2 Extraordinary Maintenance ......................................................................... 25
5.2.1 Lubrication of Mechanism ................................................................ 25
5.2.2 Replacement of Cylinder Seals .......................................................... 26
5.3 Dismantling and Demolition ....................................................................... 29
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February 2022
Installation, Operation and Maintenance Manual
MAN 620 Rev. 5
Table of Contents
Table of Contents
Section 6: Troubleshooting
6.1 Failure or Breakdown Research.................................................................... 30
Section 7: Layouts
7.1 Spare Parts Order........................................................................................ 31
7.2 Parts List for Maintenance and Replacing Procedure ....................................32
Section 8: Date Report for Maintenance Operations
Date Report for Maintenance Operations .............................................................. 38
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Installation, Operation and Maintenance Manual
MAN 620 Rev. 5
General Warnings
Section 1: General Warnings
February 2022
Table of Contents
Section 1: General Warnings
NOTICE
The manual is an integral part of the machine, it should be carefully read before carrying
out any operation and it should be kept for future references.
1.1 Generalities
Bif Italia s.r.l. actuators are conceived, manufactured and controlled according to the
Quality Control System in compliance with EN-ISO 9001 international regulation.
1.1.1 Applicable Regulation
EN ISO 12100:2010: Safety of machinery – General principles for design – Risk
assessment and risk reduction
2006/42/EC: Machine directive
2014/68/EU: Directive for pressure PED equipment
2014/35/EU: Directive for low voltage equipment
2014/30/EU: Directive for the electromagnetic compatibility
2014/34/EU: Directive and safety instructions for use in hazardous area
NOTICE
Bif Italia s.r.l. pays the highest attention to collecting and verifying the documentation
contained in this Installation, Operation and Maintenance Manual. However, Bif Italia
s.r.l. is not liable for any mistakes contained in this manual and for damage or accidents
due to the use of the latter. The information contained is of exclusive reserved ownership
of Bif Italia s.r.l. and may be modied without prior notice. All rights reserved.
1.1.2 Terms and Conditions
Bif Italia s.r.l. guarantees that all the items produced are free of defects in workmanship
and manufacturing materials and meet relevant current specications, provided they
are installed, used and serviced according to the instructions contained in the present
manual. The warranty can last either one year from the date of installation by the initial
user of the product, or eighteen months from the date of shipment to the initial user,
depending on which event occurs rst. All detailed warranty conditions are specied in
the documentation forwarded together with the product. This warranty does not cover
special products or components not warranted by subcontractors, or materials that were
used or installed improperly or were modied or repaired by unauthorized staff. In the
event that a fault condition be caused by improper installation, maintenance or use, or by
irregular working conditions, the repairs will be charged according to applicable fees.
The warranty and Bif Italia s.r.l. liability shall lapse in the event that any
modication or tampering whatsoever be performed on the actuator.
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February 2022
Installation, Operation and Maintenance Manual
MAN 620 Rev. 5
Section 1: General Warnings
General Warnings
1.2 Identication Plate
! WARNING
It is forbidden to modify the information and the marks without previous written
authorization by Bif Italia s.r.l.
The plate fastened on the actuator contains the following information (Figure1).
Figure 1 Data plate
1.3 Introducing the Actuator
HLAS single acting hydraulic linear actuators are suitable for the operation of linear
valves (wedge gate valves through conduit gate valves) for ON-OFF and modulating
heavy-duty service.
The actuator is made up of a hydraulic cylinder, a spring cartridge and a mounting pedestal
complete with a joint for the coupling to the valve stem of actuator output stem. The valve
is actuated in opening and in closing position by the actuator hydraulic cylinder in one
direction and by the spring unit in the other direction.
The output thrust of spring unit can be downward or upward according to valve operation
requirements (spring to open, spring to close, direct-acting valve, reverse-acting valve).
The spring-return pack incorporates up to four springs fully encapsulated in a
factory-welded cartridge; this assures safety conditions to personnel and simplies
the assembly.
The linear stroke of the valve is adjustable by means of the external mechanical stop for
upward position and by the adjustment of the coupling of valve stem to actuator joint for
the downward position.
The actuator pedestal has a ange with threaded holes to x the actuator to the valve.
Bif can supply different types of control system following customer’s requirements.
The expected lifetime of actuator is approximately 25 years.
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Installation, Operation and Maintenance Manual
MAN 620 Rev. 5
General Warnings General Warnings
Section 1: General Warnings
February 2022
Figure 2 Identication of actuator parts
Lifting eyelets
Hydraulic cylinder
Valve coupling
Spring cartridge
Manual handpump
MHP (optional)
Valve position
indicator
Spring-return actuator
Max. allowable thrust (N)
HLAS 250 k 135 100 k 300 CL MHP
Cylinder diameter (mm)
Stroke (mm)
Spring action
Manual override
Spring ending thrust (N)
1.4 Data Sheet
Supply uid Mineral oil or synthetic uids
Operating temperature Standard: from –30 °C to +100 °C
Optional: from –60 °C to +140 °C
Applications Gate, Globe valves
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February 2022
Installation, Operation and Maintenance Manual
MAN 620 Rev. 5
Section 2: Installation
Installation
Section 2: Installation
2.1
Checks upon Actuator Receipt
• Check that the model, the serial number of the actuator and the technical
data reported on the identication plate correspond with those of order
conrmation (Section 1.2).
• Check that the actuator is equipped with the ttings as provided for by
order conrmation.
• Check that the actuator was not damaged during transportation; if necessary,
renovate the painting according to the specication reported on the
order conrmation.
• If the actuator is received already assembled with the valve, its settings have
already been made at the factory.
• If the actuator is delivered separately from the valve, it is necessary to check, and,
if required, to adjust, the settings of the mechanical stops (Section 3.4) and of
microswitches (if any) (Section 3.5).
2.2 Actuator Handling
NOTICE
The lifting and handling should be made by qualied staff and in compliance with the laws and
provisions in force.
! WARNING
The fastening points are appropriate for the lifting of the actuator alone and not for the
valve + actuator assembly. Avoid that during the handling, the actuator passes above
the staff. The actuator should be handled with appropriate lifting means. The weight of the
actuator is reported on the delivery bill.
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Installation, Operation and Maintenance Manual
MAN 620 Rev. 5
Section 2: Installation
Installation
February 2022
Figure 3 Lifting points for HLAS actuators
1 = Lifting points (obligatory)
Figure 4 Positioning by chains
1 = point of support
! WARNING
2 = don’t lay the actuator on tie rods of cylinder
3 = don’t lay the actuator on accessories (manual handpump, hydraulic control system, etc.)
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February 2022
Installation, Operation and Maintenance Manual
MAN 620 Rev. 5
Section 2: Installation
Installation
2.3 Storage
If the actuator needs storage before installation, follow these steps:
• Place it on a wood surface in order not to deteriorate the area of valve coupling.
• Make sure that plastic plugs are present on the hydraulic and electrical
connections (if present).
• Check that the cover of the control group and of the limit switch box (if any) are
properly closed.
If the storage is long-term or outdoor:
• Keep the actuator protected from direct weather conditions.
• Replace plastic plugs of hydraulic and electrical connections (if any) with metal
plugs that guarantee perfect tightness.
• Coat the valve coupling area with oil, grease or protection disc.
• Periodically operate the actuator (Section 3.3).
2.4 Actuator Assembly on the Valve
2.4.1 Types of Assembly
The adapter pedestal in fabricated carbon steel is specically designed for adaptation to
any type of valve with provision for local indicator, limit switches and other accessories
(on request).
Lift the actuator by safety hook for chains using the lifting points (see Section 2.2) on
the top of actuator for handling, transporting and assembling in vertical position (see
Figure 3). For handling, transporting and assembling the actuator in horizontal position
by safety hook for chains, use the lifting points on the top of cylinder head ange and on
coupling ange (see Figure 4).
2.4.2 Assembly Procedure
! WARNING
Failure to comply with the following procedures may impair product warranty. Installation,
commissioning and maintenance and repair works should be carried out by qualied staff.
A non-conforming assembly could be the source of serious accidents.
For actuator assembly on the valve:
NOTICE
Check that the assembly position, as shown on the documentation, complies with
system’s geometry. Check the consistency of the parts of actuator-valve coupling.
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