Checking protective devices

Check the protective devices:

at every shift change
at least once a day

DANGER

Defective protective device!

Death or serious injury.

If a protective device does not stop the machine, it must be stopped for safety reasons and secured against being started up again. Repair must be carried out immediately.

DANGER

Opened covers and safety doors!

Danger of crushing and cutting by the carriage, the autarkic yarn carriers, the racking and the fabric take-down (main take-down, auxiliary take-down, comb take-down, belt take-down)

Do not reach into the running machine when the covers and safety doors are open.

Protective device	Checking
Engaging rod (1)	Production setting
	Pull engaging rod to highest position and release. The carriage starts moving. The engaging rod is held by a magnet. Press engaging rod to bottom position (zero position). The carriage must stop immediately.
	Middle position
	Pull engaging rod to middle position and release. The carriage starts moving. The engaging rod is not held by a magnet, must rather fall back to the zero position. The carriage must stop immediately.
Covers (2)	Pull engaging rod to highest position and release. The carriage starts moving. Open cover. The carriage must stop immediately. The engaging rod falls to zero position simultaneously. Close cover anew. To confirm the error message, tap the following button: Repeat this process for each cover.

Protective device	Checking
Lateral safety doors (3)	Pull engaging rod to highest position and release. The carriage starts moving. Open the safety door on the right-hand side of the machine. The carriage must stop immediately. The engaging rod falls to zero position simultaneously. Close safety door anew. To confirm the error message, tap the following button: Repeat this process for the safety door on the left side of the machine.
Main switch (4), emergency switching-off switch	Pull engaging rod to highest position and release. The carriage starts moving. Switch off the main switch / emergency switching-off switch (position "OFF"). The carriage must stop immediately. The engaging rod falls to zero position simultaneously. The machine must switch off automatically.

Protective device	Checking
Light Curtain (5)	Condition: The carriage has stopped. Check the light curtain with the test rod. The test rod is on the tray at the touch screen, see. Hold the test rod so that it is at a right angle to the protective area. On the left side of the yarn carrier rails move the test rod slowly from the front to the back. During the time, the test rod interrupts the protective area: the green LEDs may not glow. the red LEDs must glow always. To confirm the error message, tap the following button: Repeat this procedure in the machine center and on the right side.
Condition: The carriage is moving. On the left side of the yarn carrier rails move the test rod into the protective area. The carriage must stop immediately. To confirm the error message, tap the following button: Repeat this procedure in the machine center and on the right side.

Protective device

Checking

Light Curtain (5)

Condition: The carriage has stopped.

Check the light curtain with the test rod. The test rod is on the tray at the touch screen, see.
Hold the test rod so that it is at a right angle to the protective area.

On the left side of the yarn carrier rails move the test rod slowly from the front to the back.
During the time, the test rod interrupts the protective area:

the green LEDs may not glow.
the red LEDs must glow always.

To confirm the error message, tap the following button:
Repeat this procedure in the machine center and on the right side.

Condition: The carriage is moving.

On the left side of the yarn carrier rails move the test rod into the protective area.
The carriage must stop immediately.
To confirm the error message, tap the following button:
Repeat this procedure in the machine center and on the right side.

Documents about your knitting machine

You can find documents about your knitting machine in the STOLL customer network.

https://www.stoll.com/en/customer-net/