Troubleshooting; Corrective Action - Renfert Dynamix®speed 2 Manual De Instrucciones

7

Troubleshooting

en
Error
LEDs (5, 6, 7, Fig. 1) do not
light, pressure discs will not
move.
The unit does not switch on.
Pressure discs will not
move, "Unit cover" LED (7,
Fig. 1) is on or flashes.
Pressure plates move very
slowly towards the cartridge.
Cartridges cannot be re-
moved / cannot be installed.
A loud sound can be heard
when the mixer shaft threads
itself into the mixing nozzle.
Mixing nozzle (21, Fig. 1) is
not turning.
Unit automatically reduces
the Extrusion speed.
The mixing nozzle bursts
(21, Fig. 1).
The tubular bag bursts or is
damaged.
Advance stops for no appar-
ent reason and the unit per-
forms a short relief stroke.
Advance stops for no appar-
ent reason and the pressure
discs return to their home
position.
The mixing program LEDs
are flashing while the unit
cover is open.
Cause
• The unit is not switched on�
• Power cord not properly connect-
ed to the unit�
• Fuse blown�
• No power at the wall outlet�
• Unit fault�
• Unit cover not properly closed�
• The cover was opened before the
pressure plates stopped� A previous
cartridge position has been saved�
• Pressure discs have not fully re-
tracted to their home position�
• A spring pushes the mixer shaft
forward until it reaches a stop�
• The mixer shaft has not threaded
itself�
• Material has hardened in the mix-
ing nozzle�
• The mixer motor's thermal protec-
tor has activated�
• Unit detects a highly viscous im-
pression material and automatical-
ly reduces the feed rate and mixer
rotary speed�
• Contamination (e�g� debris) in the
cartridge holder�
• Insufficient spindle lubrication.
• The pause time was not observed�
• Incorrect mixing nozzle installed�
• Mixing tip/ foil bag not compatible�
• Pressure discs are too worn or
have been damaged, causing the
tubular bag to be pinched between
the pressure disc and the car-
tridge�
• The material has partially hard-
ened in the cartridge�
• Material has hardened in the car-
tridge�
• The controller has detected an
overload�
• Material has hardened in the car-
tridge�
• Insufficient spindle lubrication.
• No mixing program is selected�
- 10 -

Corrective action

• Switch the unit on at the main power switch (16,
Fig� 1)�
• Check that the unit plug is properly seated
(Fig� 2)�
• Replace the fuse (refer to Sec� 6�4)�
• Check that there is power at the wall outlet�
• Return the unit for repair�
• Close the unit cover (8, Fig� 1) and check that the
cartridges are properly seated� If required, seat
cartridges correctly�
• Press retract key (4, Fig� 1) and wait until the pres-
sure plates have reached their home position and
have come to a complete stop� Then repeat the
process with the cartridge�
• Press the retract key (4, Fig� 1) and allow the
pressure discs to retract until they stop automati-
cally� They are now in their home position (refer to
Sec� 5�1)�
• This is perfectly normal and requires no interven-
tion�
• Only install the mixing nozzle subsequently�
• Check that the cartridge is properly seated�
• Install a new nozzle�
• Allow the unit to cool down for approx� 30 min-
utes, Observe the maximum permissible operating
time (2 minutes of operation, 5 minute pause)�
• This only occurs if the material is highly viscose or
is cold� Refer to the manufacturer's processing in-
structions (processing temperature)�
• Clean the inner surfaces of the cartridge holder
and pressure plate�
• Lubricate the spindles (special grease!)�
• At least 5min intermission�
• Use the mixing nozzle specified by the manufac-
turer�
• Contact the manufacturer of the mixing tip / foil
bag�
• Replace the pressure discs (refer to Sec� 6�2)�
• Replace the cartridge (refer to Sec� 5�1)�
• Use new mixing nozzle�
• Impression material is too cold, Refer to the man-
ufacturer's processing instructions�
• Use a new cartridge�
• Lubricate the spindles (special grease!)�
• Select the correct mixing program for the casting
material (see section 5�1�1)�