Fritsch PULVERISETTE 19 User Manual download pdf (Page 51)

9 Repairs

DANGER!

Mains voltage!

– Before beginning with repair work, unplug the mains

plug and protect the device against being unintention-

ally switched back on.

–

Indicate repair work with warning signs.

– Repair work may only be performed by specialised per-

sonnel.

– Put safety equipment back into operation after mainte-

nance work.

9.1 Checklist for troubleshooting

Fault description Cause Remedy

Start button does not light up

green

No mains connection Plug in mains plug (20)

The control switch (19) is at 0 Set the control switch (19) to AUTO or HAND

Incorrect direction of rotation

Reverse two phases (

Chapter 4.7 ‘Electrical

connection’ on page 23

Socket fuse is faulty Check socket fuse

Device fuse blown Remove the housing and replace the fuse

START button is pressed but

mill does not start up

Closing lid (6) not closed prop-

erly

Clean contact surface, close closing lid (6)

Collecting vessel (8) or adapter

for exhaust system (27) not

inserted properly

Insert collecting vessel (8) or adapter for exhaust

system (27) properly ®

until safety switch (15)

engages.

The control switch (19) is set to

HAND.

Switch the control switch to AUTO.

Coarse samples were added to

the machine first and are

blocking rotor start-up.

Open grinding chamber and remove sample

material. ® Switch on device before adding

sample.

Mill stops running Motor safety switch has trig-

gered

Motor safety switch (see

Chapter 6.4 ‘Over‐

load of the cutting mill’ on page 37)

STOP button lights up red Incorrect direction of rotation Swap two phases in the mains plug (20)

(

Chapter 4.7 ‘Electrical connection’

on page 23)

Too much comminution material

in grinding chamber

Reduce feeding amount

Repairs

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