Braun HNS 11 user manual Checks before start-up

Checks before start-up 4

The Stimuplex® HNS 11 is a class lla medical device according to Council Directive 93/42/EEC. An item of medical equipment may only be put into operation after the supplier has subjected the equipment to a function test on site and has instructed the person responsible for operating the equipment in the use of the equipment with the aid of the user manual.

Before putting the Stimuplex® HNS 11 into operation, carry out the following tests.

1.Turn the control knob clockwise out of the O position to switch on the Stimuplex® HNS 11.

A brief click signals that this has taken place. At this instant, the devices automatically starts a self-test. This includes switching on all segments of the LCD display as a visual check.

When the self-test is completed, the stimulator immediately switches to its normal operating mode. The LEDs on the button panel indicate the operating conditions selected. To conserve power, these extinguish after 8 seconds.

If no display appears when the Stimuplex® HNS 11 is switched on, change the battery immediately. (Refer to the ”Battery” section, p. 13).

If the self-test detects a defective function, the corresponding error code will appear in the LCD display and the instrument will then be inoperative! (Refer to the ”Error messages” section).

When the LEDs are switched off, they can be reactivated by press- ing any button. This does not change the existing operating mode. The operating mode can only be changed when the LEDs are lit.

2.Carry out a visual inspection of the electrode cable. Damaged cables must not be used.

Connect the electrode cable to the front of the nerve stimula- tor. The plug connector configuration prevents wrong polarity connection.