00196504-02_UM_X-Serie_SR70X_EN - 第95页
User manual SIPLACE X-series Operational safety From software version SR.70x.xx 01/2011 EN edition Lock out and tag out procedure 95 2 Fig. 2.10 - 1 Position of the motor contactor 2 (1) Power supply (2) Motor cont actor…
Operational safety User manual SIPLACE X-series
Lock out and tag out procedure From software version SR.70x.xx 01/2011 EN edition
94
2.9.3 Compressed air conditions in the machine after switching off at the main
power switch
When the system is switched off at the main power switch (item 1 in Fig. 2.9 - 1, page 89) or if the
power supply fails, the electrically-controlled main valve Y1 of the compressed air unit closes (item
1 in Fig. 2.8 - 1
, page 88). The pressure will drop to 0 MPa (0 bar) within 5 seconds.
2.10 Lock out and tag out procedure
2.10.1 Purpose and scope
Before performing any preventive maintenance work or service work, a procedure of locking and
tagging must be followed. The procedure, when followed correctly eliminates the possibility of an
employee being injured.
PLEASE NOTE These procedures represent the minimum lock/tag out requirements for the pre-
ventive maintenance or service work. Any additional safeguards needed to complete work safely
can be specified by facilities supervision, the safety officer, the safety committee and the health
department. 2
2.10.2 Description
Whenever it becomes necessary to isolate, control and release energy, the following procedure is
to be followed
→ Notify affected employees.
→ Shut down the equipment. Carry out all normal stopping procedures:
– Press the stop button.
– Shut down the control computer.
– Switch the machine off at the main power switch.
→ Isolate the machine from all its energy sources:
– Shut off the compressed air supply
– Shut off the main power supply
→ Lock out the machine.
– Attach a lock whenever possible, e.g. to the motor contactor.
User manual SIPLACE X-series Operational safety
From software version SR.70x.xx 01/2011 EN edition Lock out and tag out procedure
95
2
Fig. 2.10 - 1 Position of the motor contactor
2
(1) Power supply
(2) Motor contactor
(T) Direction of PCB transport
Operational safety User manual SIPLACE X-series
Lock out and tag out procedure From software version SR.70x.xx 01/2011 EN edition
96
Fig. 2.10 - 2 Locking the motor contactor
2
– The tag out alternative:
If a machine can be locked out, it must be. However, there are situations where energy iso-
lating devices cannot accommodate locks. In these cases, the energy isolating devices must
be tagged to warn employees that the machine is de-energized for servicing. The tag must
be securely fastened, it must be placed in a position visible to all and it may only be removed
by the person who attached it. 2
→ Release stored energy
Stored energy in the compressed air supply or electrical energy in electrolytic capacitors must
be released by appropriate means. 2
(A) Turn the operating lever counterclockwise.
(B) Use the screwdriver to push the locking lug out of the operating lever.
(C) Secure the operating lever with a padlock.