Mahlkonig K30 TWIN Operations Instructions download pdf (Page 23)

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HORECA GASTRO GRINDER

Alarm Record

TRIAC GRIND-

ER X OUT OF

WORK

GRINDER X

FAN BLOCKED

Alarm Record

GRINDER X

FAN TOO SLOW

CLEAN GRIND-

ER X

Cause

• Triac not

interconnected

(optical coupler

defective).

• Grinder’s plug

not connected.

• Fuse defective.

• Triac defective.

• Capacitor

defective.

• Temperature

sensor in the

motor winding

defective (0A)

• Circuit board

failure.

• Foreign object

is blocking the

fan.

• Plug at proces-

sor board not

connected.

• Fan defective.

Cause

• Fan runs

with reduced

frequency for

more than

three seconds.

• Foreign object

is blocking the

fan.

• Cleaning coun-

ter has reached

the pre-set

alarm limit.

• Counter was

not reset after

last cleaning

process.

Correction

Service technician:

• Test exploring coil on

power board. If applicable

change power board.

User:

• Press PROG-button. The

other grinder can be used

again.

• Check grinder’s plug for

correct position.

• Check capacitors‘ connec-

tions and correct position.

• Interchange the grinders‘

plugs at the power board

to determine the cause of

the malfunction. (grinder

or board)

Service technician:

• Interchange capacitors

and test

• Check optical coupler (dis-

assemble power board)

• Check triac (disassemble

power board)

• Check fan for foreign

objects.

• Interchange the fans‘

plugs at the processor

board to determine the

cause of the malfunction.

(fan or socket)

• Exchange fan.

Correction

• Check fan for foreign

objects.

• Interchange the fans‘

plugs at the processor

board to determine the

cause of the malfunction.

(fan or socket)

• Exchange fan.

• Press PROG-button. Grind-

ers are not blocked.

• Clean the grinder (with

GRINDZ or unscrew,

vakuum, brush)

• Reset cleaning counter in

software user menu (chap-

ter 9) or

• Set cleaning limit higher

in software service menu

(chapter 6) or

• Switch off the cleaning

alarm in software service

menu (chapter 6).

• Recommendation: adjust

the cleaning alarm to the

weekly amount of shots

taken for a regular remind-

er to clean the grinder.

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