Endos AC/ACP Service Manual

116 Pages·2013·2.47 MB·English

ENDOS AC / ACP
0051
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Release 17 July 2013 (Rev. 7)
SERVICE MANUAL
Revision history
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Rev. Date Page/s Modification description
0 02.04.03 - Document approval.
1 25.09.03 All Remote timer version release.
ETL certification.
Spare Parts update.
(Ref. RDM 5641, RDM 5644)
2 10.11.03 7, 8 Addition of "X-MIND" identification on main label.
(Ref. RDM 5693)
3 26.03.04 8 Notify body change for CE mark.
(Ref. RDM 5781)
4 15.03.05 8, 18, 72, 73 Editorial correction on Enabling/Disabling the
"Ready" key.
Modified the DP arm label.
(Ref. RDM 5938, RDM 6052)
5 10.01.06 28 Dose linearity reference measurement time updated.
(Ref. RDM 6164)
6 13.07.07 30, 31, 45, Removed optional chemical screws.
104, 108, 110 Added NOTE with indication that the device is
supplied as unit to be installed permanently
(EN60601-1 – paragraph 19).
Spare Parts update.
(Ref. RDM 6568, RDM 6620)
7 17.07.13 6, 8, 31, 34, New scissor arm assembling procedure.
from 39 to 43, Added note on spacer insertion during stand arm set
58, 59, 96, assembling.
98, 100 Identification label update.
Mains plug on mobile stand version no more
supplied.
Schematics and drawing update.
Spare Parts update.
(Ref. RDM 7302, RDM 7532, RDM 7710, RDM 7723, RDM 7763,
RDM 7797)

(Rev. 7) ENDOS AC/ACP (120V)
SERVICE MANUAL
Revision history

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ENDOS AC/ACP (120V) (Rev. 7)
SERVICE MANUAL
Contents
Contents
1. INTRODUCTION 1
1.1 Icons in the manual................................................................................1
2. SAFETY ASPECTS 2
2.1 Warnings................................................................................................3
2.2 Protection from X-rays............................................................................4
2.3 Environmental risks and disposal ..........................................................5
2.4 Symbols in use.......................................................................................6
3. DESCRIPTION 7
3.1 Identification labels................................................................................7
3.2 Functions, Models and Versions.............................................................9
3.2.1 Extension arm and scissors arm..........................................................9
3.2.2 Tubehead............................................................................................9
3.2.3 Timer................................................................................................10
3.3 Configurations......................................................................................11
3.3.1 Standard configuration......................................................................11
3.3.2 Remote timer configuration ...............................................................12
3.3.3 Mobile stand configuration................................................................13
3.3.4 Remote X-ray button configuration....................................................14
4. TECHNICAL DATA 15
4.1 Method for correcting exposure times...................................................18
4.2 Method for measuring technical factors................................................20
4.3 Correct use of dosimeters to measure exposure times..........................21
4.4 Curves tube features............................................................................23
4.5 Reference standard...............................................................................27
4.6 Overall dimensions...............................................................................29
5. PRE-INSTALLATION 30
5.1 Mounting methods ...............................................................................30
5.2 Electric pre-setting...............................................................................31
6. INSTALLATION 32
6.1 Wall installation ...................................................................................32
6.1.1 Timer set up (standard configuration)................................................33
6.1.2 Wall support set-up (Remote Timer configuration)..............................35
6.1.3 Timer set up (Remote Timer configuration).........................................36
6.1.4 Assembling the mobile stand and timer installation............................37
6.1.5 X-ray button.....................................................................................38
6.2 Assembling the scissors arm................................................................39
6.2.1 Assembling the scissors arm (DP arm)...............................................39
6.2.2 Assembling the stand arms set..........................................................43
(Rev. 7) i ENDOS AC/ACP (120V)
SERVICE MANUAL
Contents

6.3 Tubehead assembly..............................................................................44
6.4 Installation of the optional parts...........................................................45
6.4.1 Counterplate.....................................................................................45
6.4.2 Remote X-ray button.........................................................................46
6.4.3 Installation of chemical screws..........................................................47
6.5 Electrical connection............................................................................48
6.5.1 Electrical connection for standard versions........................................49
6.5.2 Electrical connection for versions equipped with Remote Timer..........50
6.6 Final working tests...............................................................................51
6.6.1 "ENDOS ACP" timer..........................................................................51
6.6.2 "ENDOS AC" timer............................................................................54
7. MAINTENANCE 56
7.1 Generalities..........................................................................................56
7.2 Arm adjustment....................................................................................57
7.2.1 Adjusting the extension arm support frictioning mechanism..............58
7.2.2 Adjusting the extension arm frictioning mechanism...........................59
7.2.3 Adjusting the balance scissors arm....................................................60
8. SET-UP 62
8.1 Display and modification of parameters................................................66
9. ERROR MESSAGES AND TROUBLESHOOTING 76
9.1 Functional messages............................................................................77
9.2 Errors during start-up phase................................................................80
9.3 Errors that can be reset during the start-up phase...............................82
9.4 Errors during X-ray exposure...............................................................83
9.5 Faults not signalled..............................................................................84
9.5.1 The timer does not work....................................................................84
10. REPLACING PARTS 87
10.1 Replacing the tubehead........................................................................87
10.2 Replacement timer boards....................................................................88
10.3 Replacing the keyboard ........................................................................88
10.4 Replacing the scissors arm...................................................................88
11. SCHEMATICS AND DRAWINGS 89
12. SPARE PARTS 97
13. FIXING TEMPLATES 109

This publication can only be reproduced, transmitted, transcribed or translated
into any human or computer language with the written consent of Manufacturer.
This Manual in English is the original version.
ENDOS AC/ACP (120V) ii (Rev. 7)
SERVICE MANUAL
Introduction
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(cid:1) NOTE:
This manual is updated to the product status it is sold with, to

guarantee the user an adequate reference for equipment use and any
aspect connected with use safety. The manual may not reflect any
product variation without impact on operating procedures and use
safety.

The intraoral radiographic ENDOS AC/ACP, produces high quality
intraoral X-rays, thanks to reduced exposure times and the small
dimensions of the focal spot.
ENDOS AC/ACP is exclusively intended for the execution of
intraoral X-rays.
The equipment has the following features:
• Very good quality X-rays pictures
• user friendly
• ergonomic design.
The equipment is controlled by a microprocessor that makes it possible
to reproduce exposure times and is composed of the following parts:
• Timer: ENDOS AC or ENDOS ACP equipped with wall plate
• Extension arm (30 cm, 60 cm or 80 cm for wall version)
• Scissors arm (DP)
• Tubehead 70 kV 8 mA – X-ray tube with grid.
The purpose of this manual is to provide the user with instructions that
will allow him to run the equipment safely and efficiently.
The equipment must be used according to the procedures in the manual
and never for different purposes from the ones for which it has been
designed.
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(cid:1)
Indicates a “NOTE”; we recommend particular attention in reading the
subjects identified with this icon.

Indicates a “WARNING”; subjects identified with this icon concern
safety aspects regarding the patient and/or the operator.

(Rev. 7) 1 ENDOS AC/ACP (120V)
SERVICE MANUAL
Safety aspects
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WARNING:
Read this chapter very carefully.

Villa Sistemi Medicali designs and makes their equipment according to
safety requirements; moreover, they supply all necessary information for
appropriate use and warnings relating to dangers connected with X-ray
generators.

The manufacturer does not accept any responsibility for:

• Use of ENDOS AC/ACP equipment for purposes other than those for
which it has been designed,
• damages to the equipment, the operator, the patient caused both by
wrong installations and maintenance that do not follow the
procedures contained in the user manuals and the installation
provided with the equipment, and by wrong operating techniques,
• mechanical and / or electrical changes , made during and after
installation, that differ from the ones in the Service Manual.

Only personnel authorised by the Manufacturer may carry out
technical work on the equipment.

Only authorised personnel can remove the tubehead from its
support and/or gain access to live parts.

ENDOS AC/ACP (120V) 2 (Rev. 7)
SERVICE MANUAL
Safety aspects

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The equipment must be used according to the procedures in this manual
and never for different purposes from the ones for which it has been
designed.
Before carrying out any maintenance disconnect the equipment from the
power line using the circuit breaker provided.
The utmost attention must be paid during the installation and
calibration phase with the equipment connected to the line, since
components directly supplied by the input line are accessible.
ENDOS AC/ACP is an electro-medical device and for this reason can be
used only under the supervision of highly qualified medical staff in
possession of all the necessary knowledge about X-ray protection.
The user is responsible for fulfilling all the legal requirements connected
with the possession, installation and use of the equipment itself.
ENDOS AC/ACP is built for continuous running with intermittent load;
for this reason the planned duty cycle must be observed.
Although the equipment is designed to provide a reasonable degree of
protection from electromagnetic interference, according to IEC
International regulations, it must be installed at an adequate distance
from electricity transformer rooms, static continuity units, from two-way
amateur radios and cellular phones. The latter can be used only at a
minimum distance of 1.5m from any part of the equipment.
Any instrumentation or equipment for professional use located near
ENDOS AC/ACP must conform to Electromagnetic Compatibility
regulations. Non conforming equipment, with known poor immunity to
electromagnetic fields, must be installed at a distance of at least 3m from
ENDOS AC/ACP and supplied by a dedicated electric line.
ENDOS AC/ACP must be turned off when using electro-cautery or
similar equipment in the vicinity of the equipment itself.
The equipment is not designed to be used in the presence of anaesthetic
mixtures inflammable with air, oxygen or nitrous oxide.

WARNING:
For safety reasons, it is forbidden to overload the extension arm or the
scissors arm in an anomalous way, for instance by leaning on it.

(Rev. 7) 3 ENDOS AC/ACP (120V)
SERVICE MANUAL
Safety aspects

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Although dosage given by modern X-ray equipment is low on average,
during the execution of the exposure, the operator must take all
precautions to protect the patient and himself in compliance with the
regulations in force.

WARNING:
Protection from X-ray radiation is regulated by law. The equipment must
be used by specialised personnel only.

a) The film (or the digital sensor) must be put into the patient’s mouth
manually or using the appropriate supports. If possible it must be
held by the patient himself.

b) During X-ray exposure, the operator must not come into contact
with the tubehead or the collimator cone.

c) During exposure, the operator must be at a certain distance from the
X-ray source (at least 2 metres), in the opposite direction to X-ray
beam.

d) During exposure, the operator and the patient are the only people
allowed in the room.

e) The lead aprons should be used to reduce the undesirable effect of
secondary radiation on the patient.

ENDOS AC/ACP (120V) 4 (Rev. 7)
SERVICE MANUAL
Safety aspects

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Some parts of the equipment contain material and fluids which must be
disposed of in special areas designated by the local health authorities at
the end of the equipment’s life cycle.

In particular the equipment contains the following materials and / or
components:
• Tubehead: hard plastic materials, metal materials, glass, dielectric
oil, lead, tungsten
• Other parts of the equipment: hard plastic materials, metal
materials, printed circuits, iron-plastic materials.

(Rev. 7) 5 ENDOS AC/ACP (120V)