EMS AirFlow S1 Service Manual

AirFlow® S1

AirFlow

®

S1

Water

Airflow

Service manual

ELECTRO MEDICAL SYSTEMS

1

AirFlow® S1

2

AirFlow® S1

Table of contents

Important note 5

The unit and its components 6

Installation 6

Technical data 7

Description of the unit 7

Description of the electrical parts 8

Description of the hydraulic parts 10

Description of the pneumatic parts 11

Description of the powder parts 12

Trouble shooting 14

Verication of the general condition (internal) 14

Verication of the primary electrical circuit 14

Verication of the secondary electrical circuit 14

Verication of the water circuit 14

Verication of the air circuit 16

Verication of the powder circuit 16

Opening of the unit 15

Disconnecting of the air, water and powder hoses 16

Replacement of the secondary fuses 17

Unsoldering of the electrical wires 17

Replacement of the primary fuses 18

Assembly of the knob 19

Replacement of the transformer 20

Replacement of the thermostats 21

Replacement of the water heater 22

Procedure in case of heating problem 23

Replacement of the water lter cartridge 24

Replacement of the complete water lter 24

Replacement of the water regulator 25

Replacement of the pneumatic module for polisher 26

Replacement of the air lter element 27

Replacement of the air lters 27

Replacement of the electrovalve 28

Replacement of the air regulator 29

Replacement of the powder bowl set 30

Replacement of the pinch valve 31

Spare parts & Update 32

Spair part View 33-35

Function control 36

Safety control 36

EMS reserves the right to modify the technic, accessories, operating instructions or
the contents of the AirFlow® S1 due to technical or scientic improvements.

3

AirFlow® S1

4

AirFlow® S1

Important note

As manufacturer of electrical/medical devices, our responsibility
extends to the technical safety features of the unit only if mainte-

nance, repairs and modications are carried out by a repair center
trained and authorized by EMS.

All repairs or revisions must be carried out with the original EMS

spare parts.

The EMS quality policy requires a function control for each inter­vention and a safety control for each intervention requiring the

opening of the unit.

Each intervention of units for repair or revision must be docu-

mented.

For each return addressed to EMS, please clean and disinfect the
AirFlow® as described in the operating instructions and sterilize

the handpiece.

The boards must be wrapped in an antistatic bag.

This unit may not be operated in an explosion hazardous environ-

ment.

5

AirFlow® S1

Water

Airow

AirFlow

®

S1

The unit and its components
Installation

Mains 100 - 110 V AC

Mains 220 - 240 V AC

Water pressure

1 - 5 bar

Compressed air

4.5 - 7 bar

Polisher handpiece

Spanner for water lter

Footswitch

6

Installation

The following connections are required to operate the
unit :

A water supply of between 1 and 5 bars

A compressed air supply of between 4.5 and 7 bars
An electrical supply.

Technical data

Technical data

Manufacturer: EMS SA - 1260 Nyon, Switzerland
Models: AirFlow® S1
Classication: EN 60601-1 Class I
Type B
IP 20
93/42 CEE: Class IIa
Mode of operation: Continuous operation
Supply voltage: 100 V AC / 110 V AC
220 V AC
240 V AC
Main frequency: 50 - 60 Hz
Power consumption: max. 75 VA / for CSA units 115 VA*
Fuses Primary: ø 5 x 20 mm, 250 V
for 100V AC/110V AC, T 1 A, time-lag
for 220V AC/240V AC, T 0.5 A, time-lag
Secondary: ø 5 x 20 mm, 250 V, T 2.5A, time-lag
Compressed air supply: 4.5 to 7 bar (450 to 700 kPa) >15 Nl/min
(66 to 102 Psi)
Water supply: Cold water 1 to 5 bar (100 to 500 kPa)
(15 - 73 Psi)
Operating conditions: +10
30% to 75% relative humidity
Storage and transport
conditions: -10oC to +40oC (+14F to 104F)
10% to 95% relative humidity
Air pressure: 500 hPa to 1060 hPa
Weight: Approx. 3.6 kg (8.1 lbs)
Dimensions: Height: 120 mm
Width: 250 mm
Length: 250 mm

o

C to +40oC (+50F to 104F)

* For units sold in the USA and Canada

Description of the unit

The powder unit of the AirFlow® S1 is primarily intented for remov­ing soft deposits and discolourations from all visible areas of teeth

as well as from ssures and interdental spaces.

The AirFlow® S1 is driven by a pneumatic footswitch.

7

AirFlow® S1

Description of the electrical parts

This unit is equipped with a mains socket with fuses incor-

porated. The main switch ON/OFF is placed on the back
side of the unit.

The mains voltage (high voltage of 110, 220 or 240 V AC)
is converted into 24V AC (low voltage), by an internal trans-

former, to supply all the electrical components of the unit.

Transformer

Secondary fuse

Main switch

Electrovalve

8

Mains socket
and primary fuses

Thermostat 47°C

Thermostat 60°C

Water heater

AirFlow® S1

Blue

24 V AC

Green LED

Resistance

+-

Electrovalve

Blue

Blue

Blue

Blue

Blue

Thermostat

Red

47˚C

Thermostat

60˚C

Red

Water heater

Green/Ye llow

Red

Red Red

Red

Red

Red

Black

Secondary fuse

T 2.5A

Transformer

*

Main switch

Mains socket

T 1A

Primary fuses

T 1A

Yellow/

Green

ON/OFF

11

1

2

4

3

5

6 240 V

130 V

220 V

110 V

8

9

Red

Black

Secondary fuse

T 2.5A

Transformer

*

Main switch

Mains socket

Yellow/

Green

ON/OFF

11

1

2

4

3

5

6 240 V

130 V

220 V

110 V

8

9

Red

Black

Secondary fuse

T 2.5A

Transformer

*

Main switch

Mains socket

Yellow/

Green

ON/OFF

11

1

2

4

3

5

6 240 V

130 V

220 V

110 V

8

9

110 V AC

220 V AC

240 V AC

Red

Red

Red

Red

Red

Black

Black

Black

T 0.5A

Primary fuses

T 0.5A

T 0.5A

Primary fuses

T 0.5A

Blue

24 V AC

Red

Blue
Red

Blue

24 V AC

Red

Blue
Red

Blue

24 V AC

Red

Blue
Red

Yellow/Green
Yellow/Green

Yellow/Green
Yellow/Green

Yellow/Green
Yellow/Green

Primary circuit (high voltage)

*For the transformers without thermal protection (no pin 1), connect the black wire on pin 2.

Secondary circuit (low voltage)

9

AirFlow® S1

Polisher
handpiece cord

Additional connections available for AirFlow® S2

Water filter on

AirFlow® S1

Pneumatic

module for

polisher

Water heater

Polisher
connector

Polisher handpiece

Water

regulator

Description of the hydraulic parts

AirFlow® S1 is equipped with a water lter at the entrance

of the water supply. Water circuit is made by blue hoses.

On the AirFlow® unit, the water passes through a water

lter then though a water regulator allowing the regulation
of the ow, and goes into the pneumatic module driven by

the electrovalve, the heater and the polisher handpiece via

the handpiece cord.

Water heater

Water lter

Water supply

Polisher handpiece

Pneumatic module for

polisher

Water regulator

10

AirFlow® S1

See water circuit

Pneumatic module for polisher

Electrovalve

Pinch valve

Footswitch

Powder bowl set

Air filterAir filterAir filter

Air regulator

Description of the pneumatic parts

AirFlow® S1 unit is driven by a pneumatic footswitch. Internal air

circuit is made by yellow hoses.
It is equipped with an air lter at the entrance of the air supply.

The air passes through a regulator allowing the regulation of the

ow, and goes into the a set of two air lters before its entrance
into the powder bowl.

The pneumatic module for polisher, the pinch valve and the water

circuit are driven by the air circuit.

Air lter

Pneumatic module

for polisher

Air supply

Electrovalve

Air regulator

Footswitch

Powder bowl set

Pinch valve

11

AirFlow® S1

Polisher
handpiece cord

Powder bowl set

Pinch valve

Polisher
connector

Polisher handpiece

Description of the powder parts

The powder circuit is used on the AirFlow® system. The

powder circuit is made by a transparent hose.

The powder comes from the powder bowl and passes

through the pinch valve allowing the stop of the ow, and
goes into the polisher handpiece via the handpiece cord.

Powder bowl set

Polisher connector

Polisher handpiece

Pinch valve

Polisher handpiece cord

12