Operation - probst SRG Series Operating Instructions Manual

Operating Instructions
SRG-1,5/SRG-3/SRG-3-L

6 Operation

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The manholes must be of sufficient construction to withstand clamping force during transport.
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Only transport sufficiently cemented and fracture-free manholes / conical manholes, otherwise there is a danger of the
load, or part of it falling !
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Do not transport wet, flat, dirty or even icy manholes / conical manholes.
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In the case of coated manholes use the rubber-coated Pipe Suspension Grab, otherwise the coefficient of friction is too
low: Danger !
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There are numerous different models of manholes on the market. Make sure that your are using the right model of
Pipe Suspension Grab. (Models SVZ 1.5 and SVZ 3 may not be used for manholes acc. to DIN 4034 P 1)
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Following the adjustment to suit the outside diameter of the manhole and the wall thickness according to Paragraph
before - the first manhole can be lifted:
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Position jaws equally onto the manhole (articulated
lever must be pulled inwards so that all chains are
equally loaded). The suspension ring must be positioned
above the centre of gravity.
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Ensure that the chains are not twisted and may be easily
pulled through the jaws.
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Adjust the opening width of all jaws as tight as possible.
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Now slowly lift the manhole 10 cm: the angle lever must
not swivel towards the limit stop . If this happens the
opening width must be adjusted more precisely . If this
procedure is not followed there is a danger of the load
falling !
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After controlling the tight and safe fit of the jaws onto
the manhole, the manhole may be transported just
above the ground. If this procedure is not followed:
safety hazard !
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Always lift jaws vertically as opposed to lifting at an
angle . Distortion and danger of falling !
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After setting down the manholes and the releasing of
the chains, lift off the jaws .
12 /17
Operation
Fig. 7
V3
Fig. 5
Fig. 6
Fig. 8
GB