P10/37 E-IM54f
Attention to the following points will prolong
the life and efficiency of your
electrosurgical unit and will help to avoid the
risk of accidents, or damage:
DO:
♦ Switch off and disconnect from the mains electrical
supply prior to cleaning the equipment and when it is
not in use.
♦ Grasp the connector(s) not the cable when connecting
and disconnecting cables and leads from the
equipment.
♦ Contact the hospital electronics engineer or Eschmann
After Sales Service Department if the equipment fails
to function after checking.
♦ Ensure the equipment is serviced regularly (at least
every six months). Contact Eschmann After Sales
Service Department for details.
DO NOT:
♦ Use a faulty unit as failure could result in an unintended
increase of output power.
♦ Service this equipment unless you are suitably qualified
to do so.
Alarm Circuits
3.1 The unit has several alarm circuits as detailed in
the following sections.
Plate Continuity Monitor (PCM).
3.2 Ensures that the unit cannot be used in the
monopolar mode with an electrically defective plate
electrode or cable. It does not monitor the contact between
the plate electrode and the patient’s body. It is reset
automatically when a satisfactory plate electrode and cable
are connected to the unit.
Plate Attachment Monitor (PAM).
3.3 Ensures that the unit cannot be used in the
monopolar mode if a divided plate electrode is attached to
the patient’s body incorrectly. Applies only when a divided
plate electrode is used and will not operate if monopolar is
switched ‘off’ by the monopolar standby selection button.
Excess Power Monitor (EPM).
3.4 The unit monitors its output power in monopolar and
bipolar modes, compares this with the maximum allowed
power under single fault conditions and alarms, disabling
output, if the delivered power exceeds the allowed value
by more than a certain margin.
Patient Earth Monitor (PEM).
3.5 The PEM circuit detects a low impedance path
between the patient and earth. It also reduces the chances
of secondary contact electrosurgical burns. The circuit
detects earth contact paths while the plate electrode is
attached to the patient and the unit, when a monopolar
fingerswitch or footswitch is pressed, but before the
monopolar output is activated. If such an earth path is
present, the alarm will operate until the path has been
removed and the unit reset by switching ‘off’ and ‘on’ at the
mains supply switch or if a pressed monopolar footswitch
or fingerswitch is released.
Plate Voltage Monitor (PVM).
3.6 Is designed to prevent dangerous electrosurgical
voltages appearing on the patient’s body. Such voltages
could occur because of insulation faults in the active circuit
or because the active electrode is in contact with an earthed
object and could cause burns at points of contact between
the patient and conductive objects. This alarm will operate
when monopolar output power is ‘on’ and the fingerswitch
or footswitch is operated. This monitor will not detect a
poor contact between the plate electrode and the patient.
Note: Under specific electrical conditions, with the plate
electrode completely detached from the patient, the PVM
could alarm.
Multiple Activation Alarm.
3.7 Operates if more than one fingerswitch or footswitch
is pressed at the same time in a given user section (i.e.
monopolar USER 1 or USER 2 or bipolar). It will
automatically be reset when ALL activations have been
released. This alarm will also operate if a footswitch or
fingerswitch is being activated when the unit is switched
‘on’. (Note: This could indicate a damaged accessory
locked in the ‘on’ position).
Internal error alarm
3.8 Operates if an internal fault arises such as power
being detected when not enabled by a footswitch or
fingerswitch.
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