Dawson EMV 550, Owner'S Manual

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Allow the excavator engine to warm up, particularly in temperatures below 10°C.
Pay daily attention to the general condition of the hard jaws (vibrator clamp). Ensure
they are replaced once signs of wear are apparent. Check for loosened connections
daily.
Check both the vibrator and auxiliary equipment for damage. Pay particular attention
to the lifting chain assembly. Any defects should be immediately notified to the person
in charge. DO NOT OPERATE A DAMAGED UNIT. The Ø40mm hole in the pile for the
lifting chain must be spaced 250mm from the top of the pile to avoided clash with the
EMV jaws.
Refusal
- Under normal conditions, refusal is defined when the time taken to drive a
pile 250mm exceeds 5 minutes. The penetration distance of 250mm is absolute, i.e. No
conversion is allowed, for instance, 20 minutes for 1m penetration.
Rebound - This occurs when a large proportion of the hammers energy is reflected
back up through the pile as a result of hitting an impenetrable layer or obstruction. The
reflected forces will be transferred back into the hammer and the suppressor head, and
as a result, the head will start “jumping” relative to the vibratory case. In this situation
driving should be stopped immediately.
If the pile reaches premature refusal then it will be necessary to loosen up the
ground, possibly through drilling. UNDER NO CIRCUMSTANCES SHOULD
THE PILE BE FORCED FURTHER. Alternatively a larger piling device should
be used.
Operating Procedures Summary
- Read Full Operating Instructions at www.dcpuk.com
Grease all grease points - Clamp Cylinder, Saddle Swival, Dipper Pins
Check the screws, bolts, fitting etc. for tightness
Check hydraulic hoses for leaks
Check oil level in the excavator hydraulic tank
Check the gear oil level in the vibrator. The level must be halfway up the sight glass
(change oil ever 50hrs).
Check lifting chain coupler and chain clamp for damage, wear and tear
Daily Maintenance
EMV 70 220 300 450 550
MAXIMUM PUSH/
PULL LOADING
lbs 6,171 16,500 33,600 33,600 49,500
kg 2,800 7,500 15,000 15,000 22,500
EMV70 (requires 30 L/min, 240 bar) ~ 5.5 - 17 t excavator
EMV220 (requires 90 L/min, 280 bar) ~ 7 - 18 t excavator
EMV300 (requires 130 L/min, 280 bar) ~ 13 - 25t excavator
EMV450 (requires 195 L/min, 270 bar) ~ 25 - 45t excavator
EMV550 (requires 256 L/min, 280 bar) ~ 30 - 55t excavator
For completness, the flow and pressure from the excavator to the EMV
should be checked against the specification sheets to confirm adequate
hydraulic power. As a guide the EMVs typically suit the following base
machine sizes:
Dawson Constrcution Plant
Chesney Wold.
Bleak Hall,
Milton Keynes,
MK6 1NE, England
Tel: +44 (0) 1908 240300
Fax: +44 (0) 1908 240222
www.dcpuk.com
WARNING!
The postion of the quick hitch to
the dipper arm.
The quick hitch should always
be horizontal, with the direction
of force being vertical as shown.
Incorrect alignment could result in
serious part failure and risk to life!
For full details read operators instructions & spare parts
manuals, available to view or download at www.dcpuk.com
DIRECTION
OF
FORCE
HORIZONTAL AT ALL TIMES
excavator mounted vibrator
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