Sirona Orthophos 3 Maintenance instructions

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Maintenance Instructions

Sirona Dental Systems GmbH

ATTENTION !

Proper shielding of room and operator position is essential. Since these requirements vary from state to state it is

the assembler's/installer's responsibility that all local radiation safety requirements are met.

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Sirona Dental Systems GmbH

Maintenance Instructions

General

To stay in compliance with the DHHS requirements the ORTHOPHOS®3 / 3 Ceph must be maintained annually following date of installation.

It is the responsibility of the user to insure that the equipment is maintained with the manufacturer's recommended Maintenance Instructions to insure compliance with the Federal Performance Standard. The manufacturer and the assembler/installer are relieved from responsibility in those cases where noncompliance with the standard results from the user's failure to have the manufacturer's recommended maintenance performed.

The actual maintenance inspection and consequent service must be accomplished by a trained serviceman. Neither the inspection nor service is part of the equipment warranty.

Technical instructions required

Operating Instructions

Service Manual

Instruments and adjustment tools required

1.Digital multimeter Philips PM 2816 rms, Fluke 8000 A, or equivalent. Accuracy: DC voltage ± 0.1 % of reading plus 0.02% of range

DC current ± 0.4 % of reading plus 0.1% of range

2.Electromechanical pulse counter,

model KESSLER ELLIS KT 203 ±1 pulse, or equivalent.

3.Needle phantom, adjusting film for tele-exposure (delivered with the unit, customer's property) Alignment tool for X-ray beam, order no 89 31 800 (not delivered with the unit).

CAUTION RADIATION

Observe radiation protection guidelines as outlined in the Operating Instructions! X-rays are generated, when the exposure button at the Multitimer is depressed.

Caution serviceman!

All PC-boards are fitted with electronic components sensitive to electrostatic discharge (ESD). Electrostatic charges are unavoidable due to friction of clothing, carpeting etc.

To prevent damage of electronic components do not touch same without putting on the unit mounted special wristlet.

Always handle circuit boards by the edge of same.

ESD

List of Contents

Page

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Visual Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Light Indicators and Audible Sound . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 6 Power Supply Adequacy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 kV-Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 – 9 Tube Current Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Exposure Time Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 – 13 Checking and Adjusting the X-Ray Beam for Panorama Exposure. . . . . . . 14 – 16 Phantom Radiograph . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Checking the Ear Olives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Checking the X-Ray Beam for Tele-Exposure . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Checking the Laser Light Beam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Yearly Maintenance Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . appendix

59 01 603 D3285	3
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Maintenance Instructions

Sirona Dental Systems GmbH

This product complies with DHHS regulations 21 CFR Subchapter J applicable at date of manufacture. Date of manufacture:

Sirona Dental Systems GmbH

Fabrikstr. 31

D-64625 Bensheim Germany

Model-

18 90 123 D 3285

No.

Serial-

No.

MADE IN GERMANY

Model-

30 03 246 D 3285

No.

Serial-

No.

					For identification
					turn wheel
No.Model-D	3285				clockwise.
					oder
Serial-					or
					ou
No.
208 / 230 V~					o
max. 9,7 A
50 / 60 Hz
Software - Version :
Hardware - Version :
Sirona Dental Systems GmbH
	Fabrikstr. 31
D - 64625 Bensheim
	GERMANY	0123
Model-	18 90 149 D 3285
No.
Serial-					Diaphragm 1
No.	MADE IN GERMANY
Model-	59 38 436 D 3200				Ceph
No.			X-RAY	Multitimer	Diaphragm 3
Serial-
No.	MADE IN GERMANY			X-ray control.	10 x 8 in. A
This product complies with DHHS				May be installed as
regulations 21 CFR Subchapter J				remote control.*
applicable at date of manufacture.
Date of manufacture:					Diaphragm 4
Sirona Dental Systems GmbH
					8 x 10 in. S
	Fabrikstr. 31
D-64625 Bensheim Germany

Model-No. 18 89 356 D 3285

Serial-No

lll 80kV 10mA

↓ 2.5 Al / 80 IEC 522 1976

By 560 / 93	Rö - Typ D3285
Röhre / Tube
Siemens	SR 80 / 10
Model-No.	28 09 163 V 7012
Serial-No.

Y0.5 IEC 336 / 82

	MADE IN GERMANY
Röhre / Tube
CEI	OPX / 105 / S

Model-No. 51 69 722 D3328

Serial-No.

Y0.5 IEC 336 / 82

MADE IN GERMANY

This product complies with DHHS regulations 21 CFR Subchapter J applicable at date of manufacture. Date of manufacture:

Sirona Dental Systems GmbH

Fabrikstr. 31

D-64625 Bensheim Germany

Model-No.	18 88 408	D3200
Serial-No.
Model-No.	18 88 424	D3200
Serial-No.
Model-No.	18 88 366	D3200
Serial-No.

Visual Check

•Look for mechanical damage possibly affecting radiation safety.

•Verify that all labels are affixed and legible. Defaced labels must be replaced.

Order same from Sirona (address, see rear) in writing stating: Customer Name

Customer Address

All Model Numbers with Serial Numbers

still legible on the unit for identification purposes. For serial numbers see also UnitWarrantyPassportPassport. .

*REMARK for the following checks

If the Multitimer is installed as remote control outside the X-ray room: Attach the Multitimer temporarily to the unit.

For this purpose remove plastic front cover of the unit's carriage and the lower shielding, covering the plug.

4

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Sirona Dental Systems GmbH

Maintenance Instructions

I	ON
O

C Ceph-mode only

Unit ON LED		X-RAY
A	P	I SC
B	kV	6 8
		I 0
	mA
		Ready LED
		Multitimer

Light Indicators at the Multitimer, Audible Sound at the Unit.

•Unit ON LED:

Depress the main switch into the ”I” position to turn unit ON. The unit adjusts itself automatically, wait about 1 minute.

The ”Unit ON LED” in the upper left corner of the Multitimer will then indicate that the unit is ON.

•Digital displays at the Multitimer:

The program and exposure parameters employed with the last patient appear.

A shows you sequentially the P1, P6 and P11 exposure programs (with the diaphragm 1 set) and the respective maximum exposure time. Press – + program keys for correct display check. With diaphragms 3 and 4 the exposure times for tele-exposure light up.

B gives you the kV/mA matched value pair. The LED over the respective patient symbol must light up.

LED over the return key R must blink. (When LED blinks, unit is not ready for the exposure).

Clights up, when Ceph–mode is selected (see ORTHOPHOS 3C Operating Instructions for Tele-Exposures).

See also Operating Instructions under ”Preparing the Exposure” subchapter ”Switching ON the Unit”.

continues

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5

Maintenance Instructions

Sirona Dental Systems GmbH

	Radiation	CAUTION RADIATION !
	indication	Observe
	X-ray	Radiation Protection Guide Lines
		see Operating Instructions
	Exposure
	key
Multitimer	X-RAY
P	I
kV	6 8
mA	I 0
		Ready LED
		Return key R

•Make a panorama exposure: (diaphragm 1 is set at the diaphragm wheel)

-X-ray head must be in the initial position (If not, press return key R).

-Insert a panorama film cassette into the carriage and swing in the cassette holder. The LED over R key must go out. For more details and possible error messages see Operating Instructions.

-	Set the P1 exposure program using the upper – + keys.
-	Select 68kV/10mA using the lower – + keys.

-CAUTION RADIATION. Depress the exposure key and hold until the exposure terminates automatically.

The exposure ends when the LED over R key blinks and rotation and radiation automatically switch off. The radiation indication X-ray must light up during the exposure period.

Simultaneously an audible beep must sound at the unit.

•Interrupt an exposure – deadman feature:

-Observe a cool-off time of 5 mins. between exposures (automatic exposure blockage).

-Setting same as above. Remove and reinsert the film cassette. The LED over R key must go out.

-CAUTION RADIATION. Depress the exposure key until X-ray lights up and subsequently release

– the exposure must terminate immediately. The LED over R key blinks.

•Defective light indicators constitute a safety hazard to the patient as well as to the operator.

The user is not permitted to use the unit, until repairs are made!

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Sirona Dental Systems GmbH

Maintenance Instructions

K1

	N	N
		L
	L

4.

	2.	metal cover
		6 screws
5.	OI	ON
	3.		1.
	300VAC
			5.

6.– 9.

For details see Installation Instructions, same chapter or Operating Instructions.

Power Supply Adequacy

•To determine power supply adequacy, the line voltage drop during exposure must be measured.

1.Be sure power is disconnected at the central distribution panel!

2.Remove front plastic cover (for details see Service Manual). Remove lateral metal cover (6 srews).

3.Select 300VAC line voltage range on multimeter.

4.Connect measuring leads to terminal K1, L and N.

5.Connect power and switch unit ON. Wait 1 min. for self-adjustment of the unit.

6.Press key R at the Multitimer to return X-ray tube head into the initial position.

7.Remove and reinsert the film cassette.The LED over R key at the Multitimer must now go out.

8.Select P1 program and 80kV/10mA at the Multitimer.

9.CAUTION RADIATION! - Depress the exposure key at the Multitimer until meter reading is obtained.

Line voltage, no load: 187 – 208V	Max. permissible line voltage drop: 9V
208 – 230V	8V
230 – 240V	7.5V
240 – 264V	7V

•- - Record reading. Turn unit OFF. Remove meter leads and refit lateral metal cover.

•If the voltage drop is not within the specified range advise the customer, that an adequate power supply must be installed. Refer to Pre-Installation Instructions.

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Maintenance Instructions			Sirona Dental Systems GmbH

1.

I		2.
O	4.– 7.
3.		20VDC
	For details	com.
	see Operating Instructions.

KV–	KV+
	KV+

KV –

kV – Verification, kV–ramp during panoramic exposure

•During exposure the kV is encreased in the central region depending on kV/mA selected up to 12%. This increase can be measured in VDC.

1.Remove metal cover (2 screws).

2.Connect digital voltmeter to KV+ and KV– and select range 20 VDC.

3.Switch unit ON. Wait 1 min. for self-adjustment of the unit.

4.Press return R key to return the X-ray head into the initial position.

5.Remove and reinsert the film cassette.

6.Select P1 program and 72kV/10mA at the Multitimer. LED above R key on Multitimer must be off.

7.CAUTION RADIATION! - Depress the exposure button until the exposure terminates automatically.

The following values must be obtained – see also diagram on next page.

up to 4.1 seconds:	7.2 V ±0.5V,
from 4.9 to 6.5 s:	7.9 V ±0.5V,
after 7.3 seconds:	7.2 V ±0.5V.

•Turn unit OFF and remove meter leads.

•If specified values cannot be obtained, see Service Manual, ”Radiograph Density in Central Region Incorrect”

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Sirona Dental Systems GmbH

Maintenance Instructions

VDC																				ramp
																					1.6s
8																																											nominal 7.9 V
nominal 7.2 V
7
6
5
									4.1s±0.4s
4
																													7.3s±0.6s
3						5.65s±0.5s
																																									11.3s
2																																									complete P1
																																									exposure time
1																																																					s
	0			1		2		3						4				5					6						7									8					9 10 11										exposure time

kV – ramp diagram

with program P1 and 72kV/10mA set on the Multitimer.

ATTENTION

The kV - ramp can be changed at the customer’s request.

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Maintenance Instructions

Sirona Dental Systems GmbH

3.

OI

5.

7.

4./6.

2. 20mADC

com.

MA –

MA+

MA+

MA –

jumper

1.

Tube Current Verification

1.Remove jumper from MA+/MA – test points on PC-board DX1.

2.Connect digital ammeter to MA+ and MA– and select range 20 mADC.

3.Switch unit ON and wait 1 min. for self-adjustment of the unit.

4.Press return key R to return the X-ray head into the initial position.

5.Remove and reinsert the film cassette.

6.Select P1 program and 72kV/10mA at the Multitimer. The LED above R key on Multitimer must be off.

•Measurement:

7. CAUTION RADIATION! Depress the exposure key and hold depressed until meter reading is obtained.

The ammeter shall indicate 10mA ±0.5mA. - - Record reading.

•If specified value is obtained switch unit OFF. - Remove meter leads and replace jumper!

•If specified values cannot be obtained, see Service Manual, chapter ”Tube Current Verification”.

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