2014/34/EU: Directive and safety instructions for use in hazardous area 1.1.2 Terms and conditions Biffi Italia srl guarantees that all the items produced are free of defects in workmanship and manufacturing materials and meet relevant current specifications, provided they are installed, used and serviced according to the instructions contained in the present manual.
OLGA-H – High pressure double acting hydraulic actuator Use and maintenance manual supply different types of control system following Customer's requirements. The expected lifetime of actuator is approximately 25 years . Manual Hand-Pump Valve position MHP (optional) indicator Hydraulic cylinder...
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OLGA-H – High pressure double acting hydraulic actuator Use and maintenance manual 2 = supports for lateral positioning 3 = don’t lay the 1 = point of support - actuator on tie-rods of cylinder /s and – 3 = don’t lay act. from accessories (manual hand-pump, manual jack-screw, pneumatic control group etc.
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OLGA-H – High pressure double acting hydraulic actuator Use and maintenance manual For the transport of OLGA-H actuators with hydraulic manual hand- pump, when it was necessary put in horizontal position the tank of MHP, to avoid leakage on oil level stick, substitute these with a blind- plug during the transport (a specific warning label for transport in horizontal position is attached on the MHP body);...
BIFFI standard tables SCN6200* and SCN6201*.If required, for the standard models size 0.3 to 6, Biffi can supply an insert bush with un-machined bore in accordance with Biffi standard table SCN6202. On request the insert bush bore can be machined by Biffi to couple the valve stem.
Insert bush turned upside down Figure 3 – Insert bush + intermediate coupling flange The BIFFI insert bush with 2 external keys at 45° allows to position the keyway for the valve every 90°. Consequently actuator can be mounted in 4 positions at 90° on top of the valve. For biggest actuator models, the bore of the yoke can be machined according to the dimensions of valve stem.
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OLGA-H – High pressure double acting hydraulic actuator Use and maintenance manual Installation, commissioning and maintenance and repair works should be carried out by qualified staff. A non-conforming assembly could be the source of serious accidents. For actuator assembly on the valve:...
OLGA-H – High pressure double acting hydraulic actuator Use and maintenance manual 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, fittings and connections appropriate as for type, material and dimensions.
OLGA-H – High pressure double acting hydraulic actuator Use and maintenance manual Replace the plastic plugs of unused entries with metal plugs. ❑ Ground Picture 2 – Junction box on Control group (if foreseen) COMMISSIONING Check that values of electrical supply to the control group ( if foreseen ) are compatible with those on the plate on the junction box (Picture 2).
OLGA-H – High pressure double acting hydraulic actuator Use and maintenance manual are executed according to operating schematic diagram supplied. 3 Operation and use OPERATION DESCRIPTION In the normal operating situation, the double acting actuator is fed by pressurised oil which flows into the relevant cylinder chamber (for example opening).
OLGA-H – High pressure double acting hydraulic actuator Use and maintenance manual 3.2 RESIDUAL RISKS The actuator has parts under pressure. Use the due caution. Use individual protections provided for by the laws and provisions in force. 3.3 OPERATIONS ( refer to specific document: operating diagram furnished ) Local manual operation Picture 5-6 –...
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Emergency manual operation by MHP The OLGA-H actuators can have an emergency manual override in addition to the local and/or remote control panel which controls the oil supplied by a power pack for the “normal”...
OLGA-H – High pressure double acting hydraulic actuator Use and maintenance manual jackscrew manual operation follows by rotating the body of the screw container by a lever. The manual jackscrew, on request, could be furnished with fixed hand-wheel welded on it.
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OLGA-H – High pressure double acting hydraulic actuator Use and maintenance manual Figure 8 – Mechanical stop of the cylinder HYDRAULIC WRENCH WRENCH CYLINDER DIAMETER (mm) (mm) From 16 To 28 From 28 To 40 From 45 To 60 From 70...
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OLGA-H – High pressure double acting hydraulic actuator Use and maintenance manual For the adjustment of the mechanical stop screwed on the end flange of manual override(see chapt.7.2 table 6: sectional drawing for manual jack-screw MSJ) Figure 9 - Mechanical stop on the end flange of manual override...
OLGA-H – High pressure double acting hydraulic actuator Use and maintenance manual 3.5 CALIBRATION OF MICROSWITCHES (BIFFI LIMIT SWITCH BOX ONLY) Operate only the micro-switch corresponding to the direction of operation being carried out, as clearly reported on the micro-switch.
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OLGA-H – High pressure double acting hydraulic actuator Use and maintenance manual If the index (Picture 11), does not signal the proper position of the valve but is turned by 90°: Remove the roll pin placed on the position indicator (index).
OPERATION TIME (OPTIONAL – IF FORESEEN) The calibration of the operation time is made by Biffi Italia S.r.L according to customer requirements and to technical data-sheet included in technical documentation. If necessary it’s possible to modify or reset the operating time through two flow regulation valves (optional) placed on inlets of hydraulic cylinder (see Picture 12 and the applicable operating diagram).
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OLGA-H – High pressure double acting hydraulic actuator Use and maintenance manual For OLGA-H actuator with Manual Hand Pump, the operating time is adjustable through two regulation valves placed on manual hand pump body ( see chapt.7.2 table 5 :sectional drawing for hydraulic control unit...
Installation, commissioning and maintenance and repair works should be carried out by qualified staff. PERIODIC MAINTENANCE OLGA-H actuators are designed to operate long-term in heavy-duty operating conditions, without maintenance needs. Periodicity and regularity of inspections is particularly influenced...
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OLGA-H – High pressure double acting hydraulic actuator Use and maintenance manual Standard temperature conditions (-30°C/+85°): Producer AGIP Name ARNICA 22 Viscosity at 40° C 20.9 mm²/s Viscosity at 100° C 4.73 mm²/s Viscosity index ASTM Flash point 192° C Pour point -42°...
OLGA-H – High pressure double acting hydraulic actuator Use and maintenance manual EXTRAORDINARY MAINTENANCE If there are leaks in the hydraulic cylinder, or a malfunction in the mechanical components, or in case of scheduled preventive maintenance, the actuator must be disassembled and seals must be...
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OLGA-H – High pressure double acting hydraulic actuator Use and maintenance manual carefully and lubricate it with protective oil film. Assemble the new O- ring into its groove and lubricate it with a protective oil film. 1) Replace the O-ring (43) of the head flange (33).
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OLGA-H – High pressure double acting hydraulic actuator Use and maintenance manual 4) Carefully clean the inside of the tube (22) and check that the entire surface, particularly that of the bevels, is not damaged. Lubricate with a protective oil film the tube internal surface and the bevels at the ends.
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OLGA-H – High pressure double acting hydraulic actuator Use and maintenance manual b2) Replacement of seals for actuators with BIFFI manual hand-pump (see following “parts-list for maintenance doc.2 ”) If there are leaks in the hydraulic cylinder or a malfunction in the...
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OLGA-H – High pressure double acting hydraulic actuator Use and maintenance manual To replace the piston dual-seal ring (9) proceed as follows : 1) Remove the existing dual-seal ring (9) from its groove. 2) Clean the groove carefully and lubricate it with a protective oil film.
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OLGA-H – High pressure double acting hydraulic actuator Use and maintenance manual taking cares not to damaged the dual-seal ring (item 9): the tube bevel has to smoothly compress the seal ring. 6) Take care also not to damage the head flange O-ring (item 3).
For this operation it is necessary to disassemble the mechanism cover. In larger actuators the lubrication can be performed through the inspection holes of the cover after removing the plugs. The following grease is used by BIFFI for standard working temperature and suggested for re-lubrication: AGIP MU/EP/2...
OLGA-H – High pressure double acting hydraulic actuator Use and maintenance manual 5.4 DISMANTLING AND DEMOLITION Before starting the disassembly a large area should be created around the actuator so to allow any kind of movement without problems of further risks created by work-site.
OLGA-H – High pressure double acting hydraulic actuator Use and maintenance manual 6 Troubleshooting FAILURE OR BREAKDOWN RESEARCH Event Possible cause Remedy Actuator does not Lack of power supply Restore it work Lack of hydraulic Open line interception supply valve...
Use and maintenance manual 7 Layouts SPARE PARTS ORDER For spare parts order to the relevant BIFFI office please make reference to BIFFI order confirmation concerning all the supply, and serial number of the actuator (Sect. 1.2) for any specific spare part for a specific actuator model.
OLGA-H – High pressure double acting hydraulic actuator Use and maintenance manual 8 Date report for maintenance operations Last maintenance operation date : ( in factory, on delivery ): ….. ……… exec. by : ………… ……… exec. by : …………...
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