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Summary of Contents for MASTERPAC PAV20/20
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Page 2: Table Of Contents
CONTENTS CONTENTS ………………………………………………………………………………… 1.INTRODUCTION ……………………………………………………………………… 2.SPECIFICATION ……………………………………………………………………… 2.1 RECOMMENDED HYDRAULIC OILS………………………………………. 2.2 OIL SUPPLY FILTRATION……………………..……………………..…. 3. SAFETY PICTOGRAMS USED ON THIS EQUIPMENT …………….……. 4. SAFETY …………….…………………………………………………………….…. 5. OPERATION ……………………………………………………………………….. 6. FAULT DIAGNOSIS …………………………………………………………….. 7. SERVICING AND MAINTENANCE ..8-10 ……………………………………… 8. DISMANTLING PROCEDURE 10-12 ……………………………………………... -
Page 3: Introduction
2. TECHNICAL DATA PAV20/20 breaker need to be operated from a hydraulic power pack giving a flow of 20 litres per minute and capable of operating at 138 bar. This complies with the EHTMA ‘C’category. They may be used from any power pack displaying the green EHTMA triangle surrounding a green letter ‘C’. -
Page 4: Oil Supply Filtration
2.2 Oil Supply Filtration All power packs used to power Fairport breakers must have oil filtered to 10 microns or better. 3 SAFETY PICTOGRAMS USED ON THIS EQUIPMENT Wear ear protection Wear eye protection Wear safety boots Wear gloves Read the manual before using or repairing this equipment 4. - Page 5 l Do not attempt to operate defective equipment. Check that hoses and fittings are in good condition. l Ensure maintenance procedures are carried out as specified. l Do not attempt to operate this equipment on a greater hydraulic flow than that specified. l Before using the equipment check for underground cables.
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Page 6: Operation
l Never operate this equipment whilst under the influence of drugs, alcohol or medication, or when tired or fatigued. l Keep the breaker handles dry, clean and free of oil and grease. l Ensure that the hoses will not create a tripping hazard In freezing conditions store breakers and tools in a warm building. - Page 7 are of the quick release type. Ensure they are locked correctly. Before disconnecting always first isolate the hydraulic supply (see hydraulic power pack operating manual). To disconnect, pull back on the knurled rings of the coupling. Some couplings require the knurled ring to be rotated to the unlocked position before they can be pulled back to release.
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Page 8: Fault Diagnosis
l Do not operate the breaker unless the breaker and steel are pressed against the surface to be broken. l After prolonged usage vibration from breakers may cause your fingers to tingle. Wear gloves to keep the hands warm. Ensure your body is warm. -
Page 9: Servicing And Maintenance
l BREAKER STRIKE IS WEAKER THAN NORMAL l BREAKER STRIKE IS WEAKER THAN NORMAL Incorrect flow and/or pressure available from power pack Check power pack – see power pack manual. Possible loss of gas in accumulator See section 9.5 Excessive wear and/or damage to moving parts。Partial seizure of moving parts due to ingress of dirt. - Page 10 This assists in assembly and lessens the risk of seal damage. Use only seals provided in component service kits, which are obtainable from Masterpac Engineering Co.,Ltd or their agents, as these will be of a different composition and hardness to seals normally commercially available.
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Page 11: Dismantling Procedure
Note: Taking care not to discard. 1. Remove M8 socket set screw (item 64 in head assembly) 2. Unscrew the accumulator using a 90mm ‘C’ spanner（MASTERPAC ENGINEERINGCO.,LTD part number PAV20/20-GJ01） 3. With the accumulator removed its state of gas charge may be... - Page 12 MASTERPAC ENGINEERINGCO.,LTD or authorised agents 8.5 Head Assembly (refer also to section 10.7 PAV20/20.07 Head Assembly） 1.It is useful to tie a rag around the breaker cylinder to absorb oil released when the joint faces between head and cylinder are parted.
- Page 13 2.See section 10.1 for instructions regarding fitting the nose assembly to the cylinder. 9.2 Cylinder Assembly (refer to sections 10.4, PAV20/20.03 Cylinder Assembly) 1、Discard all original ‘O’ rings and seals and replace with new.
- Page 14 3. Fit new M12 Nyloc nuts (27) to projecting threads of pinch bolts (26) and hand tighten using a wrench to hold the M12 pinch bolts (27). 9.4 Head Assembly (refer to section 10.7 PAV20/20.04 Head Assembly, section 10.4 PAV20/20.03 Cylinder Assembly) 1.
- Page 15 5. Use a soft-faced hammer to finally tighten the ‘C’ spanner. 6. Apply Loctite542 or equivalent to the grub screw (64) (section 10.7 PAV20/20.04 Head Assembly) that locks the accumulator. Screw in and tighten onto the accumulator body. 9.6 Refitting Handle (refer to section 10.6 PAV20/20.02 Handle - 14 -...
- Page 16 1. Refit in reverse order to dismantling. 2. Check function of trigger before fitting Head Covers. Replace the Head Covers. 9.7 Hear covers, Protective Covers (refer to section 10.2 PAV20/20.01 Hear covers Assembly, section 10.3 PAV20/20.08 Protective covers Assembly) - 15 -...
- Page 17 MASTERPAC INTERNATIONAL: Add. Z.A.C du trou grillon P.O Box 38. 91280 St PIERRE DU PERRAY. FRANCE Tel. +33-6-12-70-02-63 E-mail. intlsales@masterpac.eu MASTERPAC ASIA: Add. No.20 Dalian Road, Baohe Industrial Estate, P.R.C. Tel. 86-551-64846601,64846580 Fax. 86-551-64846616, 64846626 E-mail. sales@masterpac.eu www.masterpac.eu Version: 01/14/01...
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