Error
The suction does not
start when an electrical
EN
appliance connected to
the QCB is activated.
The electrical appliance
connected to the QCB
cannot be operated.
Suction begins, even
though no appliance
connected to the QCB
has been activated.
The suction does not
stop when the electrical
appliance is switched
off.
The fault "Err14" ap-
pears when program-
ming the on / off thresh-
old for a handpiece.
It is not possible to find
a satisfactory setting for
the on / off threshold.
The fuse in the QCB is
triggered when a con-
nected electrical appli-
ance is switched on.
An audible sound of
compressed air is es-
caping from the deacti-
vated device.
Possible Cause
• The extraction unit is not switched on.
• Device fuse has been triggered.
• QCB is not connected with the ex-
traction unit.
• On / off threshold of the suction chan-
nel is too high.
• A connected remote control has pri-
ority over the QCB for this suction
channel.
• QCB is not connected to a power sup-
ply.
• The on / off threshold from the suction
channel is too low.
• The electrical appliance was not con-
nected to the QCB.
• The on / off threshold is set too low.
• A connected remote control has pri-
ority over the QCB for this suction
channel.
• The rpm you have selected on the
handpiece means the difference be-
tween stand-by power and operating
current is too low.
• Some older handpieces do not pro-
vide sufficient signal for the automatic
switch on.
• The total power consumption of the
activated appliances is too high.
• The float for the automatic drainage
function in the pneumatic unit has
slipped out of its correct position, i.e.
due to horizontal transportation.
Corrective Action
• Switch the extraction unit on (section 5.1).
• Check fuses, if necessary replace fuse (section 6.3.1).
• Connect the QCB to the extraction unit (section 4.6.1).
• Adjust the on / off threshold (section 5.6.4).
• Press the mouse scroll wheel from the relevant suc-
tion channel to give the QCB priority again.
• Connect the QCB to a power supply (section 4.6.1).
• Check which suction channel is open, the relevant
letter will be shown in the display.
• Adjust the on / off threshold from that particular suc-
tion channel (Section 5.6.4).
• Connect the electrical appliance to the QCB (sec-
tion 4.6.2).
• Adjust the on / off threshold (section 5.6.4).
• Press the mouse scroll wheel from the relevant suc-
tion channel to give the QCB priority again.
• Program a higher rpm on the handpiece to activate
the on / off threshold.
• Switch the suction channel on manually (see sec-
tion 5.4.3).
• Please observe the max. connected load for the QCB
(see section 8.2).
• Remove the device from the compressed air connec-
tion and then reconnect it. If necessary, repeat this
step 2 - 3 times.
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