Cleaning & Maintenance; Replacing The Dust Bag - Renfert Silent 230 Mode D'emploi

• Switch the Silent off;
• Partially block the suction fitting or the suction hose
to reduce the airflow, thus simulating a full dust bag;
• Simultaneously press and hold the three switches
(D), (F), and (H) and switch the Silent on (Figure 6);
A "C" will appear on display (G);
The dust extractor measures the airflow and saves
this value as the activation threshold;
The Silent then goes into the operating mode that
was set when the unit was last switched off (contin-
uous or automatic mode), and the current extraction
level is indicated on the display.
The more the suction fitting is closed
during the adjustment, the later the
"Change Filter" indicator will subsequently
be activated.
2.8 Diagnostics Mode
The dust extractor is equipped with a diagnostics
mode which checks various functions and displays
errors on the display (G).
Before performing a diagnostics procedure,
install a new dust bag and make sure the
fine particle filter is clean and the suction
hose is free of any material.
Activating the diagnostics mode:
• Switch the Silent off;
• Press and hold the operating mode selector switch
(D) and switch the dust extractor on (Figure 7a).
In the diagnostics mode:
• All indicator elements go on for approx. 3 sec. to
permit a visual inspection of their proper function
and the "Change Filter" indicator's signal generator
emits an acoustic signal.
• A "d" appears on the display during the unit's self-
test (Figure 7b). During this time, the unit's elec-
tronics check various internal elements and func-
tions. The suction turbines will briefly run at Level 1
during this test phase.
• If no errors are detected, the dust extractor auto-
matically goes into the previously selected
operating mode at the end of the self-test
(after approx. 10 sec.).
• If an error is detected during the self-test, a flash-
ing "E" will appear on the display, together with a
number (1 to 3).
These indicate:
E1: Airflow sensor fault; have the unit repaired.
E2: Plug on grey motor wire out of its socket
(Figure 26a) or suction turbine fault. Replace
suction turbine if necessary (refer to the spare
parts list).
E3: Error in the electronics; have the unit repaired.
In this case, the dust extractor remains in the
diagnostics mode until it is switched off at the OFF
switch (A).
3. cleaning / Maintenance
Always unplug the unit from the wall outlet
before beginning any cleaning or mainte-
nance tasks.
Examine the power cord regularly, but at
least annually, for damage or signs of
aging. Immediately replace damaged power
cords.
3.1 Seals
To ensure the proper function of the dust extractor, it
is vital that the following three seals:
• Profile seal on the dust drawer (Figure 12a);
• V-ring seal on the dust drawer (Figure 12b);
• Seal on the upper front panel (Figure 20);
are not damaged.
Inspect these seals when replacing the associated
filters and replace them if they are found to be
damaged (refer to the spare parts list).

3.2 Replacing the Dust Bag

The dust extractor may only be operated with a
complete filtration system. The dust bag must be
immediately replaced with a new one as soon as the
"Change Filter" indicator goes on.
Failure to replace the dust bag may result
in it's rupturing. Depending on the material
in the bag, this may lead to hazards for the
operator. In addition, the dust extractor may
be damaged.
• Pull the front panel forward and off (Figure 8).
• Pull the dust drawer out towards the front
(Figure 9).
• Leave the dust bag in the dust drawer and take it to
the disposal location.
• Seal the dust bag by pulling on the tab labelled
"TOP" (Figure 10).
• Remove the dust bag from the drawer and dispose
of it properly.
Always comply with all local ordinances
governing proper disposal and accident
prevention!
Depending on the filter contents, protective
clothing may be required.
• Insert a new dust bag in the dust drawer, being
careful to ensure that the dust bag is properly
aligned in the guide grooves (Figure 11) and the
"TOP" label faces up.
Use only original Renfert dust bags
(refer to the spare parts list).
• Inspect the dust drawer seal for damage and
replace it, as required (Figure 12a, b).
• Insert the dust drawer, making sure it is straight,
and push it fully against its stops. Make sure the
dust drawer is seated correctly on the guide
(Figure 13).
• Install the front panel on the bottom hooks first
(Figure 14), then push it into the upper lock bolts,
pressing firmly until it locks in place (Figure 15).