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Chapter 8
The message "ECG LEAD OFF" will be displayed any time leads I, II, or Ill are
selected and no ECG cable is connected, or the lead wires are not attached to a
patient.
PACER OPERATION
Turn the selector switch t o PACER ON. Turn pacer rate control to 150 ppm and
press the RECORDER ON-OFF button to generate a strip.
Verify that the pace pulses occur approximately every 10 small divisions (2 large
divisions, 1 cm).
Press the 4:l button and verify that the frequency of pulses decreases (8 large
divisions, 4 cm per pulse).
Turn the pacer output control to 0 mA. There should be no "PACE LEAD OFF"
message.
Remove the pacer cable from the unit. Slowly turn the knob up to 15 mA. The
"PACER LEAD OFF" message should appear.
The above tests quickly verify basic pacer functions. If you have ZOLL's
PACECHECK (Part No. NTP 4450), you can further test the pacer output cable and
verify pacer calibration.
DELIVERED ENERGY
Perform this check once a week.
AND DISCHARGE
BUlTONS CHECK
Turn the selector switch to DEFIB ON. Set the defib energy level to 100 joules
Verify that the adult paddle or multi-function electrode cable is installed. If using
paddles, be sure the paddles are pushed all the way into their holders.
Leaving the paddles in their holders or, as appropriate, plugging the multi-function
electrode cable into its test connector, press either charge button. Wait for the
charge ready tone to sound and verify that the energy ready value displayed on the
monitor registers 100 joules.
WARNING
When performing this check using paddles use your thumbs to operate the
discharge buttons. No portion of the hand should be near the paddle plates.
Press and firmly hold both discharge buttons simultaneously. The message "TEST
OK" or "TEST FAILED" should appear on the display. A brief automatic recorder
run also indicates "TEST OK," if the unit is providing delivered energy within
specifications.
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