00198654-01_UM_Nozzle_Cleaning_Station_EN - 第19页
2 Operational safety 2.6 Disabling the compressed air supply and discharging the pressure User Manual SIPLACE Nozzle Cleaning Station 09/2019 19 2.6 Disabling the compressed air supply and discharging the pressure CAUTIO…
2 Operational safety
2.5 Residual risks
18 User Manual SIPLACE Nozzle Cleaning Station 09/2019
2.5 Residual risks
Residual risks occur through operating errors or the misuse of the machine by its operator. The
highest risk of hazard exists when the following prohibited actions are attempted:
●
Operating the machine contrary to its intended use
●
Unauthorized modifications or repairs to the machine
●
Operating the machine with faults or malfunctions
●
Safety requirements are disregarded
●
Recommended safety working garments are not worn
●
The machine is operated with its guards open or missing.
●
Compliance with these guidelines ensures effective residual risk reduction.
●
Read the Operating Instructions carefully.
●
Do not attempt any unauthorized modifications or repairs of the machine.
●
Have all repairs done by authorized personnel only.
●
Have the machine operated only by personnel who have read and understood the Operating
Instructions.
●
The personnel must be trained in health-and-safety rules and the application thereof at work.
●
Compliance with the guidance and warning messages shown by the safety symbols and
signs.
●
Barring access to and the operation of the machine by unauthorized personnel.
Any failure to comply with these guidelines can cause the following hazards.
●
Injury by burns
●
The operator’s tripping or falling
●
Electric shock or electrocution
●
Crush injuries
●
Injuries from the washing fluid at high pressure
DANGER
Failure to comply with the prohibitions and guidance provided herein can result in
residual risks!
2 Operational safety
2.6 Disabling the compressed air supply and discharging the pressure
User Manual SIPLACE Nozzle Cleaning Station 09/2019 19
2.6 Disabling the compressed air supply and discharging the
pressure
CAUTION
Risk of injury from compressed air!
Risk of injury when disconnecting the compressed air lines.
► Never disconnect compressed air lines while they are still pressurized.
Fig.6: NCS - compressed air unit
1 Location of the compressed air unit 2 Compressed air connection
3 Stop valve in the "CLOSED" position 4 Compressed air supply
5 Compressed air supply for cleaning 6 Compressed air filter
7 Manometer for the nozzle cleaning station supply pressure
Target pressure: 0.50 ± 0.01MPa, 5.0 ± 0.1bar (display range 0–1.0MPa, 0–10bar)
The compressed air working pressure of the nozzle cleaning station is set to 0.51 ± 0.01 MPa (5.1
± 0.1bar). The position of the compressed air unit is shown below. The supply of compressed air to
the nozzle cleaning station can be interrupted with the shutoff valve(3).
► Turn the lever of the shutoff valve(3) to the right.
► Monitor the operating pressure manometer(5). When the nozzle cleaning station switched off,
the pressure discharges to 0MPa (0bar) within 1minute.
2.7 Safety instructions on hazardous materials
CAUTION
Observe the safety data sheets
Observe the applicable safety data sheet, when handling hazardous materials (e. g. Vigon
SC or KG15+).
2 Operational safety
2.8 Locking and attaching the warning labels
20 User Manual SIPLACE Nozzle Cleaning Station 09/2019
2.8 Locking and attaching the warning labels
2.8.1 Purpose and scope
Before performing any preventive maintenance work or service work to the nozzle cleaning station,
a procedure of locking and tagging must be followed. The following procedure, when followed cor-
rectly, eliminates the possibility of an employee being injured by electrical shock in connection with
unexpected movement.
NOTICE
Minimum requirements
These procedures represent the minimum lock/tag out requirements for the preventive
maintenance or service work on the nozzle cleaning station. Any additional safeguards
needed to complete work safely can be specified by facilities supervision, the safety officer,
the safety committee and the health department.
2.8.2 Description
Whenever it becomes necessary to isolate, control and release energy for the nozzle cleaning sta-
tion, the following procedure is to be followed.
► Notify affected employees.
► Isolate the nozzle cleaning station 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 main switch).
► Alternatively: tag out procedure
If the nozzle cleaning station can be locked out, it must be. However, there are situations
where energy isolating devices cannot accommodate locks. In these cases, the energy isolat-
ing devices must be tagged to warn employees that the nozzle cleaning station is de-ener-
gized 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.
► Release stored energy
Stored energy in the compressed air supply or electrical energy in electrolytic capacitors must
be released by appropriate means.
– After switching off the nozzle cleaning station, wait the specified discharge or pressure un-
loading time before the nozzle cleaning station can be operated again without risk.
► Verify the lock out.
Testing the lock out for the nozzle cleaning station can be done simply by pressing the start
button.
► The following steps must be taken to restore the nozzle cleaning station to operation:
– Check the area. Authorized employees should remove all their tools and reinstall all
guards.
– Notify all affected employees.
– Before removing even one lock or tag, inform all workers in the area that the nozzle clean-
ing station is going to be restarted.
– Remove locks/tags
– Each authorized employee must remove his or her own lock. Each authorized employee
will have his or her own lock.
– Turn the nozzle cleaning station on. Authorized workers should observe the equipment in
operation to insure repairs were done correctly.