Midmark Ultra-series Dental Chairs User guide

Ultra-series Dental Chairs
Midmark
Brand
Midmark
Model
Ultra-series Dental Chairs
Type
User guide

This manual is also suitable for

1
© Midmark Corporation 2016
Service Guide: Power Supply Model 153941 (002-
2018-XX)
Contents:
Accessing the
Power Supply ..................1
Replacing Fuses .............. 2
Wiring Diagrams ....... 3 & 4
Wire Color
Abbreviation Chart ........... 5
Note
The Power Supply, converts, regulates and distributes electric power from the electrical
mains supply to components installed on Midmark Dental Chairs.
Accessing the Power Supply
To access the power supply...
A) Disconnect power.
B) Remove five screws and lockwasher from top
and one screw and lockwasher from top cover.
C) Lift top and cover from the power supply.
Electrical Mains Supply
Receptacle
004-1088-99 Rev.AA3 (04/22/19) TP204 20-42-FO-00015 Rev A1 C2169
DANGER - WARNING
To prevent the possibility of electrical shock,
always disconnect electrical mains supply to
the Power Supply before removing the cover. Failure to
comply with these instructions could result in severe
personal injury or deaths.
2© Midmark Corporation 2016
Replacing Fuses
To replace fuses...
A) Disconnect power.
B) Remove cover and top. (Reference Accessing the Power Supply.)
C) Extract fuse(s) to be replaced.
D) Install new fuse(s).
E) Install cover and top then secure with screws and lock washers.
F) Reconnect powercord to the power supply.
Note: Lift straight up to remove button type fuses.
Button Type Fuse
Tube Type Fuse
DANGER - WARNING
To prevent the possibility of electrical shock, always disconnect
electrical mains supply to the Power Supply before removing
the cover. Failure to comply with these instructions could result in severe
personal injury or deaths.
Fuse Specications
004-1088-99 (1/26/16) TP204 20-42-FO-00015 Rev A1 C2169
3© Midmark Corporation 2016
Equipment Alert
230 V~ model requires air pressure to activate chair.
If air pressure is unavailable, then plug chair power
into supply power cord.
004-1088-99 (5/30/17) TP204 20-42-FO-00015 Rev A1 C2169
GND
YL
GY
YL
GY
RD
OR
RD
OR
BL
BR
BK
BL/
WH
BK/
WH
WH
PR
WH/
RD
WH
WH
GN/YL
GN/
YL
GN/
YL
Wiring Diagram - Power Supply Assembly
Line Power
Out To Chair
LIN Connections
(from Chair and Assistant's Unit)
Air From Master
On / Off Switch
PRIMARY
(Input Voltage)
Air Pressure
Switch
Thermal O/L
(Auto Reset)
(Power to
Transformer)
SECONDARY
(Output Voltage)
24 VAC
20 VAC
Power Supply PCB
Spares
Supply
Power
In
Note All leads come out the same side of the transformer.
F4 & F5
Outputs
are
soldered
to the
PCB.
Fuse Specications
Transformer
Outlet
Equipment Alert
Use care to prevent static discharge
when handling PC Boards.
Fuse
Color Abbreviation Chart
A
A
Description Part
Number
Harness (Refer to “A” for other connection) 015-3413-00
Fuse
Harness
BYPASS
BYPASS
NORMAL
4
© Midmark Corporation 2016
Equipment Alert
230 V~ model requires air pressure to activate chair.
If air pressure is unavailable, plug chair power into
supply power cord.
004-1088-99 (5/30/17) TP204 20-42-FO-00015 Rev A1 C2169
1/8 RD
80-100 PSI
(5.5 - 6.9 BAR)
D3
D2
D1
DM4
DM3
DM2
DM1
Wiring Diagram - Power Supply Assembly (End View)
Note:
LIN Gnd = Chair Control DCV Ground reference.
PE Gnd = Protective Earth Ground.
N/A = Not Applicable.
PSI kpa
30 206.8
50 344.7
80 551.6
100 689.5
Unit Power
(From J5)
Light
Power
(From J4)
Unit Power
J5 Plug
1 PE GND
2 N/A
3 24VAC COM
4 24VAC
5 PE GND
6 N/A
7 24VAC COM
8 24VAC
Light Power
J4 Plug
1 PE GND
2 LIN GND
3 20VAC COM
4 N/A
5 LIN
6 20VAC
Power In
Air Pressure
Switch
LIN Connections
(From Chair & Assistant’s Unit)
Power Out
Accesssory
1 9VAC
2 9VAC COM
Power Out
1 LINE
2 NUETRAL
3 PE GND
Power In
1 LINE
2 NUETRAL
3 PE GND
Color Abbreviation Chart
Accessories
USB Hub Power
1 GND
2 5VDC
USB Hub
Power
(Optional)
1
2
Line Voltage at J1 Supply Power In
• TopoffusesF3&F4onJ1connector
Line Voltage on Power Output connector
• Terminals1&2
25 VAC Supply to Unit
• UnitPowerPlugTerminals3&4
• UnitPowerPlugTerminals7&8
• D2LEDisON
20 VAC Supply to Light
• LightPowerPlugTerminals3&6
• D1LEDisON
9 VAC Supply to Unit
• AccessoriesTerminals1&2
• D3LEDisON
5 VDC Supply to USB Hub (only on mod-
els153941-001&153941-002)
• USBHubPowerPlugTerminals1&2
• DM4LEDisON
12 VDC Supply to LIN Connections (Chair
&Assistant’sUnit)
• DM1,DM2,&DM3LEDisON
ContinuityCheckofTransformer’sTher-
mal Overload (O/L)
Continuity should be present at Trans-
formerBrown&Blackleads
POWERSUPPLYTESTPOINTS
(Refer to Wiring Diagram - Power Supply Assembly)
Note: Air Pressure Switch must be operated.(Contact COM & NO closed)
All fuses must be good. (F1, F2, F6, F7, F8, F11, F12)
Transformer Thermal Overload (O/L) must be closed.
5© Midmark Corporation 2016 004-1088-99 (1/26/16) TP204 20-42-FO-00015 Rev A1 C2169
Item Color
(English)
Farbe
(Deutsch)
Couleur
(Français-Europe)
Color
(español europeo)
Colore
(italiano)
Color
(others)
BK Black Schwarz Noir Negro Nero
BL Blue Blau Bleu Azul Blu
BR Brown Braun Marron Marrón Marrone
CL Clear Durchsichtig Incolore Transparente Trasparente
GN Green Grün Vert Verde Verde
GY Grey Grau Gris Gris Grigio
OR Orange Orange Orange Naranja Arancione
PR Purple Purpur Pourpre Morado Porpora
CL/PR Clear Purple Durchsichtig Purpur Incolore Pourpre Transparente Morado Trasparente Porpora
RD Red Rot Rouge Rojo Rosso
WH White Weiß Blanc Blanco Bianco
YL Yellow Gelb Jaune Amarillo Giallo
PK Pink Pink Rose Rosa Rosa
TN Tan Hellbraun Fauve Marrón claro Tanè (marrone scuro)
BK/WH Black/White Schwarz / Weiß Noir / Blanc Negro / Blanco Bianco / Nero
BL/WH Blue/White Blau / Weiß Bleu / Blanc Azul / Blanco Blu / Bianco
BR/WH Brown/White Braun / Weiß Marron / Blanc Marrón / Blanco Marrone / Bianco
CL/BK Clear / Black Durchsichtig / Schwarz Incolore / Noir Transparente / Negro Trasparente / Nero
GN/WH Green / White Grün / Weiß Vert / Blanc Verde / Blanco Verde / Bianco
GN/YL Green / Yellow Grün / Gelb Vert / Jaune Verde / Amarillo Verde / Giallo
OR/WH Orange / White Orange / Weiß Orange / Blanc Naranja / Blanco Arancione / Bianco
PR/WH Purple / White Purpur / Weiß Pourpre / Blanc Morado / Blanco Porpora / Bianco
RD/WH Red / White Rot / Weiß Rouge / Blanc Rojo / Blanco Rosso / Bianco
VI/WH Violet / White Violett / Weiß Violet / Blanc Violeta / Blanco Viola / Bianco
YL/WH Yellow / White Gelb / Weiß Jaune / Blanc Amarillo / Blanco Giallo / Bianco
YL/GN Yellow / Green Gelb / Grün Jaune / Vert Amarillo / Verde Giallo / Verde
YL/BK Yellow / Black Gelb / Schwarz Jaune / Noir Amarillo / Negro Giallo / Nero
Color Abbreviation Chart
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  • Page 4 4
  • Page 5 5

Midmark Ultra-series Dental Chairs User guide

Ultra-series Dental Chairs
Midmark
Brand
Midmark
Model
Ultra-series Dental Chairs
Type
User guide
This manual is also suitable for
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