13
Fig. 13. Operation of safety device preventing machine damage.
6.8. Rest position
In rest position, the mower is completely disconnected from the tractor linkage. This happens
during downtimes or mower storage in after-season period. The mower is moved to rest position from
transport position.
Thus, do the following:
• with mower lifted on 3-point linkage lower the support and secure it with split pin,
• lower the mower by supporting it on sliding discs and support,
• detach joint end of tractor upper connector from linkage frame yoke;
• remove ball-and-socket joints of tractor lower links from linkage frame pivots.
6.9. Residual risk description
Despite the fact that manufacturer, assumes responsibility for design and marking of rotary
mowers Z-178, Z-178/1, Z-178/2 and Z-178/3 in order to eliminate risks during operation, and also during
servicing and maintenance, some risk elements are unavoidable, though. Residual risk results from
erroneous or inappropriate behaviour of rotary mower operator. Major source of risk follows these
forbidden operations:
- operation without guarding or with damaged or opened guarding,
- mower operation in the presence of unauthorised personnel within 50 m,
- mowing on edges of streets, roads, public squares (parks, schools, estates, etc.) or on stony terrain,
- operation of mower by personnel who are under the influence of alcohol or other abusive substances,
- lifting the mower attached to tractor with drive on and drums rotating,
- transportation of the mower with knives installed,
- approaching rotating machine parts,
- transport of personnel on the mower,
- stay between the mower and tractor with engine running,
- removal of safety guards with engine running,
- transportation of the mower with PTO drive connected,
- use of U-joint shaft without cover or with damaged cover,
- tampering with U-joint shaft during operation,
- exceeding rotational speed by PTO shaft above 600 rpm
- inspection of technical condition when the mower is running,
When describing residual risk, rotary mowers Z-178, Z-178/1, Z-178/2 and Z-178/3 are considered
machines which until their production start, have been designed and developed in accordance
with the state of the art.
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