Erbe APC 2 User manual

2022-0180116-276_V24169
SERVICE MANUAL
APC 2
V 1.2.x
V 1.3.x
V 1.4.x
PLASMASURGERY

SERVICE MANUAL
APC 2

Registered trademarks of Erbe Elektromedizin GmbH: autoCUT®, BiCision®, BiClamp®, CleverCap®, ELEXOR®, endoCUT®,
endoCOAG®, Erbe®, erbe power your performance.®, ERBECRYO®, ERBEFLO®, ERBEJET®, ERBOKRYO®, ETIP®, FiAPC®,
forcedCOAG®, HYBRIDknife®, HYBRIDTHERM®, HYDRON®, KYRON®, NESSY®, NESSY Ω®, PLURA®, preciseAPC®,
Preflow®, pulsedAPC®, ReMode®, softCOAG®, sprayCOAG®, swiftCOAG®, thermoSEAL®, twinCOAG®, VIO®.
Registered trademark of Erbe, USA, Inc.: CleverCap®.
For an up-to-date list of all Erbe trademarks, please visit www.erbe-med.com/IP.
All rights to this manual, in particular rights of duplication, dissemination and translation, are reserved. No part of this man-
ual may be reproduced in any form (by photocopying, microfilming or other methods) or processed, duplicated or dissem-
inated by the use of electronic systems without the written consent of Erbe Elektromedizin GmbH.
The information contained in this manual may be amended or supplemented without prior notice and represents no obli-
gation on the part of Erbe Elektromedizin GmbH.
The display illustrations in these instructions may deviate from one another depending on the software version. The display
illustrations used in these instructions are generally taken from the latest software version. Display illustrations from older
software versions will only be used if necessary due to service activities; these will be specifically labeled.
Printed by Erbe Elektromedizin
Printed in Germany
Copyright © Erbe Elektromedizin GmbH, Tübingen 2022

5 / 62
Table of Contents
80116-276_V24169 2022-01
Table of Contents
1Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Classification of the safety information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Knowledge of the User Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Protection from the risk of electric shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Handling of argon pressure cylinders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Electrostatically sensitive components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Liability and warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2Modifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Controls at the front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Version 1.2.x . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
From version 1.3.x . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Controls at the rear. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5Circuit Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Block diagram APC 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Description of the various assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Pneumatic system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
APC controller (open and closed-loop control) . . . . . . . . . . . . . . . . . . . . . . . 19
IIF (Instrument Interface). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6Setup and Service settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7Test programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
8Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Personnel requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Temperature conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Test equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Test setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Test procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
9Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
ERROR list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
A/E-Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Table of Contents
6 / 62
80116-276_V24169 2022-01
10 Maintenance and servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Who is allowed to perform servicing and maintenance work? . . . . . . . . . . . . . 35
What is a technical safety check?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
How often does a technical safety check have to be performed? . . . . . . . . . . . 35
Testing and measuring equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
For APC sockets, and FiAPC sockets on the APC 2 . . . . . . . . . . . . . . . . . . . . .36
For HF sockets on the APC 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Technical safety check – step by step. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Safety information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
User manual and visual inspections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Tests to be conducted in accordance with the national specifications
and regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Performance tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Pressures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
No leaks at 5 bar input pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Purge function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Gas flow measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Instrument recognition APC socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Instrument recognition FiAPC socket. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Instrument recognition multifunction sockets . . . . . . . . . . . . . . . . . . . . . . . .48
Fingerswitch activation APC 2 + VIO D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
Fingerswitch activation APC 2 + VIO S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51
HF socket performance test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
11 Spare parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Circuit Boards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Socket modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
APC sockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
Bipolar sockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
Monopolar sockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
Multifunction sockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

7 / 62
1 •Safety information
80116-276_V24169 2022-01
CHAPTER 1
Safety information
Classification of the safety information
Knowledge of the User Manual
The User Manual for this unit constitutes an integral part of this Service
Manual. For performing servicing activities it is assumed that the reader
has knowledge of the User Manual, especially procedures for installation,
putting into operation, and handling.
Protection from the risk of electric shock
WARNING! The WARNING! safety indication refers to a risk of personal injury.
CAUTION! The CAUTION! safety indication refers to a risk of damage to property.
ATTENTION! The ATTENTION! safety indication refers to a risk which can cause
equipment to become unserviceable.
IMPORTANT! The IMPORTANT! designation indicates application information and
other particularly important information.
WARNING! Disconnect the APC 2 from the electrosurgical unit (interconnection and
ECB cable) before replacing parts inside the unit or cleaning the unit.
WARNING! Do not touch any unprotected wires or conductive surfaces while the
unit is opened and under voltage.
WARNING! High-frequency voltages of over 1000 V are needed to ionize argon.
Check that there is no damage to the electrical insulation of the appli-
cators and all cords prior to use.

1 •Safety information
8/ 62
80116-276_V24169 2022-01
Handling of argon pressure cylinders
Electrostatically sensitive components
Liability and warranty
WARNING! For some servicing work argon pressure cylinders must be connected to
the APC 2. Before doing so, familiarize yourself with proper handling, in
particular with the safety instructions for how to handle argon pressure
cylinders. This information can be found in the user manual for the
APC 2.
CAUTION! This unit contains electrostatically sensitive components. Work at an
anti-static workplace while repairing the unit. Wear a grounding arm-
band while working with electrostatically sensitive components. Hold
the circuit boards by their non-conducting corners. Use an anti-static
container for transporting electrostatically sensitive components and
the circuit boards.
ATTENTION! Adjustments, tests, modifications, maintenance and repair work may
only be performed by Erbe or persons trained by Erbe. If the work is not
performed by trained persons, Erbe accepts no liability and warranty
rights become void.
It is recommended that the technical safety check also be performed by
Erbe or persons trained by Erbe.
ATTENTION! Only use original Erbe spare parts. The manufacturer accepts no liability
and the warranty rights becomes void if original spare parts are not
used.

9 / 62
2 •Modifications
80116-276_V24169 2022-01
CHAPTER 2
Modifications
The changes relevant to APC 2 vary depending on which VIO electrosurgi-
cal unit (VIO D or VIO S) the APC 2 is connected to. They are therefore only
described in the service manuals for the VIO electrosurgical units.

2 •Modifications
10 / 62
80116-276_V24169 2022-01

11 / 62
3 •Controls
80116-276_V24169 2022-01
CHAPTER 3
Controls
Controls at the front
Version 1.2.x
Fig. 3-1
IMPORTANT! This chapter contains an overview of the controls of the unit(s). The rel-
evant User Manual for the unit(s), knowledge of which is assumed for
servicing work, provides detailed information about how to use the
unit(s).
APC 2
ERBE
APC 2
1
2
3
4
5
1Purge button
2Focus button
3FiAPC socket
4Pilot lamp „No ECB data link“
(Erbe Communication Bus)
5Pilot lamps for footswitches

3 •Controls
12 / 62
80116-276_V24169 2022-01
From version 1.3.x
Fig. 3-2
IMPORTANT! As from V 1.3.x the APC module can take two sockets. One of these
sockets must be a APC socket. The second socket can be either a HF
socket or, as from V 1.4.x a second APC socket.
5
APC 2
ERBE
APC 2
1
2
3
4
1Purge button
2Focus button
3Pilot lamps for footswitches
4FiAPC socket
5Pilot lamp „No ECB data link“
(Erbe Communication Bus)

13 / 62
3 •Controls
80116-276_V24169 2022-01
Controls at the rear
Fig. 3-3
1
2ECB ECB
21
Ar
1
2345
1Purge pin
2Argongas connector
3Pressure sensor terminal
4ECB sockets (Erbe Communication Bus)
5Potential equalization terminal

3 •Controls
14 / 62
80116-276_V24169 2022-01

15 / 62
4 •Technical Data
80116-276_V24169 2022-01
CHAPTER 4
Technical Data
Connections
Low voltage via VIO electrosurgical unit
HF via VIO electrosurgical unit
Terminal for potential equalisation yes
Gas specification
Type of gas Argon
Argon minimum purity Argon 4.8 (99.998% purity) or higher, e.g. argon 5.0.
Density (relative; air = 1) 1.38
Critical temperature –122 °C
Color Colorless gas
Odor No warning by smell
Concentration of explosion limit (vol. % in air) Non-combustible
Special risks Heat/fire can result in an increase in pressure caus-
ing the pressure gas bottle to explode! Gas in high
concentrations can be suffocating!
Gas-specific unit data
Input pressure (5 ± 2) x 105Pa 5 ± 2 bar 72.5 ± 29 psi
Max. discharge pressure 2 x 105± 4 x 104Pa 2 ± 0.4 bar 29 ± 5.8 psi
Variable gas flow 0.1 - 8 l/min limited by the instrument attached,
adjustable in 0.1 l increments
Tolerance of the rated flow (in range 0.2 - 5 l/min) ± 20 %
Purging flow Depending on the instrument (corresponds to the
setpoint flow of the instrument which is currently
connected)
Purging time 3 sec.
If you use a gas bottle, the residual volume display is
activated at
7 x 105Pa 7 bar 101.5 psi

4 •Technical Data
16 / 62
80116-276_V24169 2022-01
Residual volume display VIO display
Residual pressure display Pressure gauge
The APC 2 switches off when the input pressure is <3 x 105Pa < 3 bar <43.5 psi
Dimensions and weight
Width x height x depth 410 x 80 x 370 mm
Weight 4.8 kg
Ambient conditions for transport and storage of unit
Temp eratu re -40 °C to + 70 °C
Relative humidity 10% – 95%
Ambient conditions for operation of unit
Temp eratu re +10 °C to + 40 °C
Relative humidity 15% – 80%, noncondensing
Acclimatizing
If the unit has been stored or transported at temperatures below +10 °C or above +40 °C, the unit will
require approx. 3 hours to acclimatize at room temperature.
Standards
Classification according to EC Directive 93/42/EEC IIb
Type as per EN 60 601-1 CF
Gas-specific unit data

17 / 62
5 •Circuit Descriptions
80116-276_V24169 2022-01
CHAPTER 5
Circuit Descriptions

5 •Circuit Descriptions
18 / 62
80116-276_V24169 2022-01
Block diagram APC 2
Fig. 5-1
DC
DC
ECB
AE
NE
AE
NE
IK
ECB = ERBE Communication Bus
APC Controller
Ventil-Ansteuerung und Überwachung Valves Driver and Control
IIF
+5V
+/- 15V
Operating
Voltages
AK AE
NE
AK
Instrument Interface
IIF
Instrument Interface
APC
MONO/BIPOL/MF/
APC
Connector
to VIO
1
2
p
Up
Up
U
IK
ECB
Flow
(calorimetric)
Flow
(pressure
difference)
SCI SCI
5 Bar
2,5 Bar
+24V
Connector
to VIO
0V
A
D
Controller Unit
p
U
Verteilerblock
Distributor unit
nur bei 2 APC-Buchsen
only with 2 APC receptacles

19 / 62
5 •Circuit Descriptions
80116-276_V24169 2022-01
Description of the various assemblies
Pneumatic system
The argon gas is extracted from the gas cylinder at approx. 200 bar. Down-
stream of the pressure reducer unit it is available at the APC unit with ap-
prox. 5 bar. The pressure reducer unit is equipped with a high-pressure
sensor which can be used to identify the level of gas in the cylinder.
In the unit itself the internal supply pressure sensor is downstream of the
input filter. A switching valve is then used to switch the gas to the control
unit. This consists of the internal pressure reducer, which reduces the
pressure to 2.5 bar, a proportional valve and the flow sensors. For redun-
dancy reasons the flow is measured using two sensors based on different
physical principles. One is designed as a differential pressure sensor which
measures the differential pressure occurring at a specified bottleneck.
With the calorimetric flow sensor an electrically heated element is cooled
by the gas flow. This cooling can be used to calculate the flow rate.
The output is also equipped with another pressure sensor which is used to
control the pressure in the instrument. This allows a blockage to be detect-
ed and the gas pressure maintained at non-critical levels.
APC controller (open and closed-loop control)
A switched mode power supply unit housed on the "APC controller" gen-
erates the necessary supply currents of +5 V, +15 V and –15 V from the
+24 V input voltage.
The processor controls the valves and also the flow according to the val-
ues measured by the sensors.
The control voltage of the switching valves is reduced as soon as they have
been energized. This prevents the excitation coil from overheating when
switched on for lengthy periods.
The "APC controller" receives its specified values from the control panel via
the Erbe Communication Bus (ECB). The parameters for gas control are
thus transmitted and the commands for switch-on and off issued before
every activation.
If a button is pressed on the APC 2, the "APC controller" signals this to the
control panel via the ECB. In return it is informed which LED indicators
must be switched on.

5 •Circuit Descriptions
20 / 62
80116-276_V24169 2022-01
IIF (Instrument Interface)
The instrument interface assembly may be found up to four times in the
VIO system: twice in the electrosurgical unit and twice in the APC 2 unit
and VEM 2 unit respectively.
The IIF is used to provide the system with the key instrument information
via an electrically isolated serial interface:
Activation recognition The activation recognition checks whether one of the activation buttons
(or ReMode button) has been pressed. It is designed to analyze the differ-
ent coding systems (diode coding, resistor coding connected in parallel or
series).
Socket recognition The socket recognition can recognize the type of socket via the coding
jumpers on the socket connectors.
Instrument recognition
(only relevant for
multifunction and APC
sockets)
The instrument recognition can identify instruments coded by resistance
and read instruments equipped with an electronic memory, transmitting
the relevant data to the system.
This data is converted to CAN using the "CPU + Sensors" and sent to the
control panel.
The safety relays, which switch the HF voltage on activation to the instru-
ment connected, are also located on the IIF assembly. The actual switching
state of the relay is reported back to the system such that defective relays
or incorrect switching states can be recognized.
There are two types of IIF:
•IIF ME: for monopolar instruments, equipped with a relay that can
switch the activated electrode to the instrument.
•IIF BE: for bipolar instruments and multifunction instruments designed
for bipolar use only. Each equipped with one relay for the activated
electrode and patient plate.
Socket type Type
number
Pin 2 - Pin 6 Pin 1 - Pin 6
Bipolar 1 – X
Monopolar 2 X –
Multifunction (MF)1
1. Only relevant for VIO 300 D or in conjunction with a VIO 300 D.
3 X X
APC 4 – –