Schulthess WT14 Betriebsanleitung

Dryer WT14 Service instructions

638 155 AL

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11 / 2016

Service instructions

Dryer WT14

Contents

1Safety instructions ....................................................................................................... 2

2Machine parameters..................................................................................................... 3

3Settings for the customer ............................................................................................ 5

4Test programmes.......................................................................................................... 5

5Operating data .............................................................................................................. 8

6Error messages ............................................................................................................ 9

7Replacement of control and power boards............................................................... 11

8Drying programmes W WT14 EFH W1 80.................................................................. 13

9Drying programmes WT14 EFH K 80......................................................................... 16

10 Drying programmes WT14 MFH W2 80 ..................................................................... 19

11 Drying programmes WT14 MFH K 80........................................................................ 22

12 Drying programmes WT14 MFH A 80........................................................................ 24

13 Overview of the model types and machine parameters (Settings ex factory)........ 27

14 Documents overview.................................................................................................. 32

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1 Safety instructions

In addition to the safety instructions provided in the installation instructions and in the operating

instructions, the following safety instructions are to be followed:

Repairs may only be carried out by trained and qualified specialists.

Defective components may only be replaced with original spare parts by the original equipment

manufacturer.

Disconnect machine from the mains, before removing the covers (top cover, side covers, back

covers, heating covers, door covers, etc.).

In cases of works on machines on which a cover was removed without having disconnected the

machine from the mains first, there is a risk of electric shocks.

Even with switched-off machines, there may remain electrical residual voltages. There is a risk of

electric shocks.

In addition to the risk of electric shocks, there is a risk that a uncontrolled retraction movement of

the arm or hand is triggered by the electric shock, which then in turn may result in cuts on sharp-

edged components. Due to this retraction movement, it may also be possible to get into rotating

components or running drive belts.

Moreover, there is a risk of injuries resulting from mechanical (sharp-edged, springy or rotating

components, running drive belts) and thermal effects (hot detergents and hot components).

Those who work in the areas surrounding sharp-edged components have to wear protective

gloves. Furthermore, sharp edges are to be covered with cloth or adhesive tape.

Even if the drum is only manually set in rotation, there is a risk of fingers being trapped in the

pulley’s belt.

For transportation, the machine must be lifted by auxiliary means, since there is otherwise a risk

of back injuries as well as a risk of hands and feet being trapped.

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2 Machine parameters

Setting of machine parameters

To start theSettings menu, press the 11 button in the main menu.

(MFH: first of all hold down button 11 for 2 secs until the Settings menu appears)

By pressing down the arrow button 4 for a long time (5 seconds), you can access page 2 of

the settings menu.

Select Service Function and enter the service code 36-14-25 (01-02-03 field trial).

Important

This service code may only be handed over to authorised service organisations!

There is a separate code available for application technicians, facility managers and

administration, who would like to read out the operating data (see chapter Operating data).

The Machine Parameter menu appears. Select the individual machine parameters according to

the information in chapter Model overview and machine parameters.

Pressing the Back button (or after no more than 2 minutes after the last entry) exits the

Settings menu.

When exiting the menu, changes must be confirmed with Yes or discarded with No.

2.1 Machine type

On setting the machine type, the control system is adjusted to suit the different machine sizes.

Nominal values for temperatures, moisture measurement, extra drying times of the individual

programmes. Time tables for the preview of the programme duration.

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2.2 UI-Table (User Interface)

This setting allows the adjustment of the control system to the various models.

IMPORTANT: If you change the UI table and save these changes, the machine is automatically

reset to default settings.

2.3 Heating variant

Electric Settings for all domestic appliances.

Steam indirect This setting has no influence on any domestic appliances.

Hot water This setting has no influence on any domestic appliances.

2.4 Self-cleaning

Yes Solenoid installed for cleaning the evaporator.

No No Y-valve and no solenoid. Condensate is either pumped into the condensate

drawer or into the drainage hose.

2.5 Y-valve

Yes Y-valve installed. The condensate is either pumped up into the condensate

container (cleaning) or to the outside into the drainage hose.

No No Y-valve. Condensate is always pumped into the drainage hose.

2.6 Welcome text

Neutral Without welcome text and logo

Schulthess ... The selected company name always appears on the display on turning on the

machine.

2.7 Payment options

These functions are described in the CRM14 Payment System guide.

Without No payment system installed

Card CRM14 (Cash Reader Module) installed

Token Unit with integrated token function

Coin Unit with integrated coin function

RS-485 Module RS485 installed

2.8 Lock settings

Yes The settings are blocked for the customer, apart from the Language

(temporary), Time and Date settings (these are never blocked).

No The settings are available to the customer

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2.9 Filter cleaning display

Off No display

5 programmes After the set number of programmes have run, the message "Clean filter C"

up to is displayed. The message disappears when the filter is removed.

25 programmes

2.10 Maintenance interval

No No instruction to maintain the machine will appear.

500 - 4000 After this number of programmes the notification "Machine maintenance due"

will be displayed. After a further 50 programmes the notification will be

displayed again, thereafter after every 10th programme, until the counter is

zeroed.

500 – 4000 After the course of the set number of programmes, the notification "Machine

mandatory maintenance due“ is displayed.

After a further 50 programmes no further programmes can be performed until

the counter is zeroed (the number of programmes that can still be carried out

will be shown at every programme start).

Zeroing the "Maintenance interval" counter:

Enter the service function.

Select Reset maintenance counter.

The programme counter is zeroed.

2.11 Power outage AutoStart

No The programme remains stopped after a power cut. The programme resumes

by pressing the start button.

Yes The programme continues automatically after a power cut.

This setting has no meaning in EFH machines. The programme always

continues to run automatically after a power failure.

3 Settings for the customer

The individual settings are described in chapter Settings of the respective operating instructions.

4 Test programmes

Test programmes are called up as described in chapter Machine parameters.

Select the Test programmes menu after entering the service code.

The chosen test programme starts automatically.

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4.1 High-voltage test (for production)

For the high-voltage test, the drive motor is run for two minutes in the same direction. The fan is

also operated and after 30 seconds, the condensate pump will also start up. All other consumers

are switched off.

This test programme is terminated after two minutes.

4.2 Drying programme

During the duration of this programme, the display shows the temperatures of the temperature

sensors in the machine.

SFH HP

During the first 40 seconds the drum motor (including process air fan) and the compressor are in

operation. Then the sub cooler fan also switches on.

During minute 3 and 4 only the drum motor (including process air fan) is in operation.

SFH C

The machine runs a 4-minute heating cycle followed by a 2-minute cooling cycle.

The condensate is drained at the end.

AB HP

During the first 2 minutes the drum motor, the process air fan and the compressor are in

operation

The auxiliary heater turns on until the air temperature reaches 40 °C. Then the lower radiator fan

switches on, but with a 40 second delay.

During minute 3 and 4 only the drum motor and the process air fan are in operation.

4.3 Heating

SFH HP

During the first 30 seconds the drum motor (including process air fan) and the compressor are in

operation.

Let run for another 10 seconds, and then the drum motor (including process air fan) and the sub

cooler fan are in operation.

SFH C

The drive motor starts up. The high-power heater is activated first for 5 seconds, then the low-

power heater. The drive motor runs for about 30 seconds longer.

AB HP

The drum motor, the process air fan, the compressor, the low-power heater and the sub cooler

fan are activated sequentially. After 16 seconds this programme is terminated.

4.4 Condensate pump

SFH HP and AB HP

First the Y-valve is actuated. After 60 seconds, the condensate pump will start up and pump the

water to the outside. The pump runs for 60 seconds and then the programme ends.

SFH C

The condensate pump runs for 60 seconds.

4.5 Reversing

SFH

Inspection of the drive. The drum will rotate clockwise for 10 seconds, then it will stop for 2

seconds rotate again clockwise for 10 seconds, and so on.

The fan also runs. The programme ends after two minutes.

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Inspection of the drive. The drum will rotate clockwise for 10 seconds, then it will stop for 2

seconds, rotate counterclockwise for 10 seconds, stop for 2 seconds, etc.

4.6 Fan motor

SFH

The drum motor will be actuated for 2 minutes. The process air fan also runs on the axle of the

drum motor.

The process air fan will be actuated for 2 minutes.

4.7 Moisture measurement

By applying a short circuit between the electrodes at the inside of the drum front, the moisture

measurement function can be tested.

- Open door and insert a door locking latch into the door lock.

- Start the moisture measurement test programme. The display shows an increasing value.

- Induce a short circuit. The value will decrease again.

- Remove the short circuit. The value will start to increase again.

After 2 minutes the test programme is exited.

4.8 Operating buttons

When operating a button, the corresponding touch value is shown in a green field. The test

programme is exited 10 seconds after the last push of a button.

4.9 Self-cleaning

SFH HP and AB HP

Pumping up in the condensate container, cleaning of the front heat exchanger (condensate drip-

off) and pumping the condensate out of the device is tested.

First, 3.0 litres of water are added to the bottom assembly via the lint filter in the door opening,

where the water flows into the condensate pan after flowing through filter C (only MFH).

The condensate pump switches on, as soon as the condensate electrode is submerged in water.

After that, close the door and start test programme.

The water from the bottom assembly is pumped up within 90 seconds (the

condensate tank overflows after 1.9 litres and the excess water flows back into the bottom

assembly).

Next, the Y-valve is activated and stays open until the end of the programme.

After 60 seconds switchover time, the condensate pump starts and the rinse valve opens for 5

seconds (knocking noise at the solenoid).

The water flows downwards from the upper container through the front heat exchanger (heat

pump's vaporiser unit) and removes any pieces of fluff from the entire surface of the heat

exchanger.

The plinth panel with the filter C can be opened to observe the dripping

(only AB). The condensate is pumped out of the bottom assembly into the drainage hose within

90 seconds.

For the pump performance when pumping out, one measures the time required to pump back out

the 3 litres poured in at the beginning, i.e. the time interval between the knocking noise occurring

and the moment in time, when the condensate pump sucks in air and the water in the condensate

hose starts to swing back and forth.

(The allocated time is approx. 30 to 70 seconds, depending on the level of the condensate hose.)

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5 Operating data

Using this function, the operating data stored in the control PCB are displayed.

5.1 Calling up the operating data

In the Settings menu, the Operating data menu can be called up on the second page. The

operating data code (28-39-17) must be entered for access.

This operating data code may be forwarded to interested persons. (Application technicians,

facility managers administrations)

5.2 Operating data survey

Operating data

Information

Error messages

Display of the last 20 errors, with time and date stamp

Last drying

programmes

Display of the last 20 programmes runs, with programme number, programme

name, time and date stamp

Number of wash

programmes

Display of the number of completely run programmes (no stepping forward)

Operating hours Display of the current operating hours (loosening up resp. crease protection

are counted as well)

Software version

Display of the current firmware version

Machine number

Display of the machine number

Last service inspection

Display, when the machine was inspected last by a service technician

Format: XX.XX.XX / YY

X = Service visit date (DD.MM.YY)

Y = letters A - Z; service technician initials

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6 Error messages

Two different types of error messages exist:

Error messages in the form of a plain text display

These errors can usually be corrected by the user.

Error messages F

These errors must be corrected by a service technician.

6.1 Plain text message

Depending on the type of error, different procedures are required to acknowledge the message.

Display Error type Cause Reaction

„Display is dark“ No power supply to

the control panel Control panel defective or

interruption in the cable

between power board and

operator board.

The current programme

switches to cool down.

Child lock active

Child lock active Child look is activated in the

user parameters. For actions

like "Open door" or "Start

programme", always press

button "11" first.

Programme does not start.

Pop-up for 5 sec.

H-01

Check drain

Collected

condensate water

could not be

pumped out in last

12 minutes.

Condensate pump or Y-

valve defect.

Level electrode is short-

circuited.

Hose plugged or hose

pinched.

The current programme

switches to cool down.

Then cancel or continue.

Insert filter «C»

then press start button Filter "C" not

properly inserted at

startup

Filter is missing, or solenoid

switch is defective. (Filter

monitoring)

Once the error is eliminated,

the programme can be

started.

Insert filter «C»

Cancel / Continue

H-03

Filter "C" removed

during programme. Filter or solenoid switch is

defective. (Filter monitoring) Once the error is eliminated,

the programme can be

started.

Close door,

then press start button The start button

was pressed with

the door open.

Door is open or door lock is

defective. No programme can be

started.

Clean fluff filter

(displayed at the end of

the programme)

Timeout

Filter is plugged or heat

output is insufficient. The module moisture

measurement took longer

than 150 minutes.

Clean fluff filter

(displayed during the

programme)

H-09

Timeout Filter is plugged, heat output

is insufficient, the process

fan does not run or the

moisture measurement unit

is defective.

The module moisture

measurement took longer

than 240 minutes.

Clean filter „C“ Filter cleaning is

due The number configured in

the filter maintenance menu

has been reached

Filter "C" must be cleaned.

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Display

Error type

Cause

Reaction

Error door lock

H-14 Door did not open

after repeated

pressing of the

door release button

The door lock is overheated,

defective or the control

signal to the door lock is

interrupted.

Door release is disabled for

30 sec. to cool down the coil.

Machine maintenance

due The machine

needs to be

serviced

The number configured in

the machine maintenance

menu has been reached.

Drying can be continued.

The message is displayed

sporadically.

Machine maintenance

due

No. programmes still

The machine must

be serviced soon The number configured in

the machine maintenance

menu has been reached.

Only a limited number of

programs can still be run.

Machine maintenance

due now

H-20

The machine must

now be serviced The mandatory number

configured in the service

interval menu has been

reached.

Drying can only be continued

when the maintenance

counter has been reset in

the service menu.

Programme stopped

H-21

The On/Off button

was pressed

during a

programme.

The programme was

stopped. The current programme

switches to cool down.

Default settings

H-23

Security prompt The user selected the

settings "Default settings". The machine is reset to the

settings at the time of

delivery.

6.2 F-error messages

F-error messages are displayed as "Error F-XX, programme cancelled, inform customer

service". When the error message is acknowledged with "OK, the machine restarts.

If the error cause was not corrected, the error message appears again.

Display

Error type

Cause

Reaction

F-11 NTC1 sensor interruption for

measuring the supply air or hot

gas temperature, respectively

NTC probe interruption

The current programme

switches to cool down.

F-12 NTC1 sensor short-circuit for

measuring the supply air or hot

gas temperature, respectively.

NTC probe short

circuit The current programme

switches to cool down.

F-15 NTC3 sensor interruption for

measuring exhaust temperature.

NTC probe interruption

The current programme

switches to cool down.

F-16 NTC3 sensor interruption for

measuring exhaust temperature.

NTC probe interruption

The current programme

switches to cool down.

F-19

Compressor contactor does not

open.

Contacts are stuck together. Compressor runs all the

time.

F-30 No connection to the power

board.

The cable between operating

and control part is

interrupted.

The control part does not

receive a response from the

power part

The current programme

stops.

All consumers are

switched off.within 30

seconds.

F-50 – F-53: See Service instructions „Payment system CRM14”

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