Cleaning & Maintenance - Renfert Vario Jet Mode D'emploi

5. The blasting process can be
interrupted by pressing
"HOLD" (Fig. 18-I). The
remaining time will flash on
the display. On re-newing the
start blasting will continue for
the remaining time. During the pause you can
work manually using the foot switch.
6. By pressing "STOP" (Fig. 18-J) the blasting pro-
cess will cease regardless of whether you wanted
to interrupt the process or end it completely. The
timer returns back to the original time setting and
is ready for use.
Tips & Tricks:
• Before blasting cast objects remove as much
investment material as possible
>>> reduces necessary blasting time
• Remove any casting sprues
>>> 50 % improvement on blasting effect
• When blasting single objects place in casting
cones >>> improves object rotation
5.3 Manual Mode
1. Press the button (Fig. 18-G)
to switch on the unit, then
press the button (Fig. 18-E)
to switch the unit into manual
mode. The LED display
shows only the points.
2. The unit can now only be used via the foot switch.
The basket will not function in manual mode.
3. The extraction unit will automatically start up
when blasting commences.
4. By re-pressing the button (Fig. 18-E) the unit will
switch back into automatic mode.
5. The blasting nozzle unit (Fig. 15-A) can be
removed from its holder in manual mode and be
guided by hand.
5.4 Extraction Unit
1. The run-on time for the connected (Fig. 13-A)
extraction unit can be infinitely varied between
5 and 30 seconds via the dial on the back of the
unit (Fig. 21).
2. By pressing the button (Fig. 18-F) you can make
the extraction unit independent from the blasting
process e.g., when cleaning the unit. During the
blasting process the extraction unit cannot be
manually switched off for safety reasons.
3. On initial delivery the extraction unit is automat-
ically configured for Renfert's extraction units.
You can operate Renfert's extraction units on the
lowest setting.
Tips & Tricks:
• During the extraction unit's run-on time the set
time cannot be altered.
• During the extraction of the blasting dust
Vario jet may build-up a static charge via the
extraction hose. This can be avoided, if the
extraction hose contacts an earthed metal
object for ex. a heating radiator at the instal-
lation.
5.5 Warning Function
The red LED (Fig. 18-D) lights up when the glass
screen is open >>> no blasting is possible!
The display flashes.
5.6 Protective Ring on Basket
At the inner side the basket is fitted with a protective
rubber band which prevents interlocking of the clasp
pieces in the perforated sides as well as early wear
and tear of the basket. It is possible to remove the
band, however it must be reckoned on a higher wear
and tear of the basket.
5.7 Removal of the Basket
The basket can be easily removed for manual use
of the unit. Simply pull it forward off the shaft. Pull
off using both hands supported by a gentle shaking
movement. Now remove the basket from the blast-
ing chamber. To reposition press the basket onto
the shaft until it clicks in place. For improved central
positioned the rubber mat can be removed before
repositioning. The shaft is visible through an opening
in the basket (Fig. 22).
5.8 Distance between Jet
Nozzle Unit and Basket
The distance between the blasting nozzle unit
(Fig. 15-A) and the rotative basket, and thus to the
objects to be blasted, can be set in four levels as
required The standard level positions the blasting
nozzle unit in a central position. To set for specific
uses pull the blasting nozzle unit out of its holder
and position it according to your needs (Fig. 23).
Tips and Tricks:
The blasting nozzles can be set to four levels:
• Position 1: least distance to basket
>>> for regular blasting of 1 - 2 objects
• Position 2 - 3: middle distance to basket
>>> for regular blasting of 3 - 5 objects
• Position 4: greatest distance to basket
>>> for regular blasting of 5 or more objects
6. Cleaning / Maintenance
From time to time your Vario Jet automatic will need
maintenance. This consists of checking the connec-
tion leads and pipes for seals and damage as well
as cleaning the plate. Use only solvent-free cleaning
fluid when cleaning (e.g. soapy water).
6.1 Condensed Water
Occasionally check whether water has formed in the
maintenance unit. If so, press the drainage valve on
the maintenance unit (Fig. 20-A).
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