(2) The device shall be interlocked with the press-control circuit so that the
downward motion of the slide cannot begin until the device encloses the point of
operation.
History: 1979 AC.
R 408.12331 Two-hand controls.
Rule 2331. (1) A 2-hand control shall require the application of both hands to
operate the press and shall require concurrent pressure on both controls until a point is
reached in the downward stroke where the die opening is such that the operator cannot
remove their hands and place them within the point of operation. Removal of 1 or both
hands, before the closing portion of the cycle, shall either stop the slide or return the slide
to its starting position.
(2) Two-hand controls for single-stroke operation, manufactured and installed on or
after August 31, 1971, shall be designed to require release of all operator's hand controls
before a second stroke can be initiated.
(3) Controls for more than 1 operating station shall be designed to be activated and
deactivated in complete sets of 2-hand controls per operating station, by means capable of
being supervised by the employer.
(4) If foot control is provided, the selection method between hand and foot control
shall be separated from the stroking selector and shall be designed so that the selection
may be supervised by the employer.
(5) A 2-hand control is a mechanically, pneumatically, or electrically controlled
system.
(6) A 2-hand control shall be installed to prevent "bridging" controls, so that it can
be operated by 2 hands only.
(7) In a press operation requiring more than 1 operator, a set of 2-hand controls
shall be provided for each operator. However, a foot control may be used with 2-hand
controls if arranged to operate concurrently (otherwise, no cycle) and if the operator is
not exposed to the point of operation.
(8) If each of the operating stations is provided with a lockout arrangement,
provisions shall be made to prevent an unintentional press cycle when all of the operating
controls are locked out.
History: 1979 AC; 2023 MR 6, Eff. March 27, 2023.
R 408.12332 Two-hand devices; controls.
Rule 2332. (1) A 2-hand device may be a mechanically, pneumatically or
electrically controlled system.
(2) A 2-hand device shall be installed to prevent "bridging" controls, and so that
it can be operated by 2 hands only.
(3) In a power press operation requiring more than 1 operator, a set of 2-hand
devices shall be provided for each operator. However a foot control may be used with
2-hand devices if arranged to operate concurrently (otherwise, no cycle) and if the
operator is not exposed to the point of operation. If each of the operating stations is
Page 9