HURST SP 333 - Circuit Diagram; Control of the Operating Movements; Hydraulic Supply; Hoses

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4.3 Circuit diagram
4.4 Control of the operating movements
4.5 Hydraulic supply
4.6 Hoses
A
B
spreading
pulling /
squeezing
star grip
g. 3
To enable comprehension of the function, a simplied hydraulic cylinder of the rescue
equipment (A) + hand valve (B) are depicted here.
The spreading arms movement is controlled via the star grip of the mounted valve.
(see cover, item 1 and, below, gure 3).
A HURST motor pump or hand pump only may be used to drive the equipment.
If the pump unit is a di󰀨erent make, you must make sure that it complies with HURST
specications, otherwise potential dangers may occur which are not the responsibility of
HURST.
Ensure in particular that the authorised operating pressure for HURST equipment is not
exceeded.
REMARK:
Before you use pumps from a di󰀨erent manufacturer, you must contact HURST
or an authorised dealer.
The pump unit and the rescue tool are connected by hoses.