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Adjustment of the load limiter
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Concerning the operation;
By mistake, if a load heavier than the rate load is lifted, the hoist will automatically stop lifting, and will
caution the operator that the load exceeds the rated load for the air hoist.
If the load limiter is activated, promptly seek a stable area and slowing lower the load to this area.
It is necessary to lower the over load safely. In this case when lowering the load the load limiter will
not be activated.
Also, please note when operating in the feathering mode the load limiter may not activate due to
instability of the operation.
WARNING
;
Do not rely on the load limiter and check the load before
lifting.
・
A load limiter is equipped within the hoist but please understand that this device is the final
emergency measure to stop the hoist. During actual operation, it is necessary that the load is
within the rated load of the hoist before it is used.
・
Adjusting;
WARNING
;
The load limiter needs to be adjusted based on the operating
air pressure used.
・
he load limiter needs to be adjusted according to the air pressure being used. At the factory it has
been set at 125% of the rated load at 0.6 MPa. If the hoist will be used above this air pressure,
referring to the section of “ how to adjust the load limiter “ must be refereed. Also, depending on
the piping and hose size and length the setting may change. If the setting adjustment is not made
the hoist may stop below the rated capacity. It is dangerous to perform lifting of a load above 125%
of the rated load.
This load limiter operates when an over load is lifted the pressure within the air motor increases and
relays this information to the load limiter valve and this mechanism allows the hoist to stop.
This load limiter is adjusted based on the operating air pressure. As a result depending on the air
pressure the load limiter was adjusted to, the results may change such as “ the hoist may not lift the
rated load “ or “ the load limiter may not activate with an over load “ as a result, it is necessary to
adjust your hoist based on the air pressure you are using to operate the hoist.
The method of adjusting the load limiter is explained in the following page.
Air & Allied Sales (Pacific) Pty Ltd
www.air-allied.com.au
