FRITSCH PULVERISETTE 25 - Manual (Page 35)

page 34
PULVERISETTE 25
6 Maintenance
During maintenance work that does not require a power
supply, unplug the mains plug (20) and secure the
instrument against unauthorised reactivation before starting
the work!
Warn about maintenance work with a sign.
Regular cleaning is (chapter 5) the most important maintenance
function for the cutting mill.
Functional
part Task Test Maintenance
interval
Filter of the
cutting mill (25) Filtering exhaust air
Clean the air filter (25). To do this, use a screwdriver
or similar tool to lever out the filter holder (a) upward.
Knock out the filter foam mat (B). Clean using
compressed air or a vacuum cleaner. If the filter foam
mat (B) is extremely dirty, replace it with a new one.
Part number: 90.0740.16 filter foam mat.
Before each
grinding
operation
Safety lock (11) Locking the cover flap
(6)
Is the cover flap (6) held closed when the main switch
(19) is at 0 (OFF)? If NO , the safety lock is defective.
Immediately disconnect the instrument from the mains.
Replace the safety lock. Before each use
Safety switch
(15) Securing the lower
opening of the cutting
chamber Does the cutting mill run without the collecting vessel
(8)? If YES , the safety switch is defective.
Immediately disconnect the instrument from the mains.
Replace the safety switch. Before each use
Safety switch
(17)
Securing the funnel
opening Does the cutting mill run while the funnel lid (16) of
the standard funnel (1) is open? If YES , the safety
switch is defective. Immediately disconnect the
instrument from the mains. Replace the safety switch.
Before each use
START button Indicating readiness
for operation Does the START button light up green when the main
switch (19) is at I (ON)? If not, see chapter 8. Before each use
Rotor (3) Comminuting material Check that the rotor sharp?
Maintenance: resharpening
Before each use
Stationary
knives (4,5,9) Comminuting material Check that the knives (4,5,9) sharp?
Maintenance: resharpening
Before each use
Cutting gap Cutting operation Measure the gap width. For adjustment instructions,
see chapter 4.1.3. After every rotor
and knives
change
Cones Centring the rotor (3) Check the cones for cleanness and grooves
See chapter 4.1.4 After every rotor
change
(25) filter
(B) foam mat
(A) filter holder