3. Unscrew the 3 screws that are placed on the
white plate on the backside of the
hydrolyzing unit. Unscrew the 3 screws that
are on the bottom of the white plate.
4. Take away the white plate.
5. Loosen the 6 metal clips on the neoprene
tubings connected to the connection tube
and then loosen the neoprene tubes from the
connection tube.
Note: Do not take away the neoprene tube
that is situated to the far right.
6. Fold the connection tube to the right.
7. Carefully loosen and take away the filter
seal that is connected on the top of the
vacuum valve to be changed.
8. Turn the vacuum valve knob counter
clockwise until it disengages.
9. The vacuum valve is now free and is drawn
out from the rear of the hydrolyzing unit.
10. Fit the new vacuum valve and put together
in reverse order.
9.5.2
Change of condenser
1. Take away the plastic straps on the 3
neoprene tubings that are connected to the
condenser and loose the tubings from the
condenser.
2. Loosen carefully the condenser from the
filter seal and pull the condenser right up.
3. Assemble the new condenser and connect
the tubes in the same way as for the old
condenser.
9.5.3
Change of filter seal, upper
1.
Loosen the condenser according to
paragraph 9.5.2 Pos. 1-3
2. Carefully loosen and pull out the old filter
seal. Press gently down the new filter seal.
Note: Check carefully the correct
positioning of the new filter seals.
9.5.4
Change of the lower
thimble holder
1. Loosen the old thimble holder by gently
easing and pulling it upwards.
2. Press down the new thimble holder and
check that it fits correctly.
9.5.5
Change of the vacuum tube
1. Remove the plug from the wall socket.
2. Unscrew the instrument panel with the
heating control knob.
3. Remove the white plate on the back of the
hydrolyzing unit according to paragraph
9.5.1 Pos. 1- 4.
4. Remove the plastic strap on the neoprene
tube that is situated to the far right on the
connection tube.
5. Unscrew the nipple on the back of the
hydrolyzing unit that is marked "vacuum".
6. Pull out the tube with the nipple through the
instrument hole.
7. Cut the new vacuum tube to 450 mm and
assemble the nipple from the old tube.
8. Assemble the rest in reverse order.
9.5.6
Change of fuses
1. The 2 pole fuse holder is located under the
mains cable. Push the middle button and
change the fuses.
9.6
TECHNICAL
SPECIFICATIONS
9.6.1
Safety
The insulation of external, inaccessible circuits
is reinforced.
9.6.2
Environmental conditions
The equipment is designed to be safe at least
under the following conditions:
·
Indoor use
·
Altitude up to 2000 m.
·
Temperature 5°C to 40°C.
·
Maximum relative humidity 80% for
temperatures up to 31°C decreasing linearly
to 50% relative humidity at 40°C.
·
Mains supply voltage fluctuations not
exeeding
±
10% of the rated voltage.
·
Transient overvoltage is according to
category II, which is normal for this type of
equipment.
·
Pollution degree 2
9.6.3
Lifting instructions
This instrument is not equipped with handles or
grips. One or two persons are needed to lift the
instrument, following the instructions below:
1. Tilt the instrument slightly backwards, then
lift and support the instrument as shown in
fig.12 to simplify and ensure a safe lift.
2. Weight 23 kg.
9.6.4
Explanations to
illustrations
Fig. 3
1. Equipotential screw
2. Mains and fuses
3. Vacuum (water aspirator pump)
4. Cooling water inlet
5. Drain
Fig. 4
Insert the tube with sample and celite into the
Hydrolyzing Unit.
Fig. 5
Pull the handle up (to pos 2) to lower the suction
tubes.
Fig. 6
Use gloves when handling thimbles to minimize
contamination.
Fig. 7
Turn the knob to open/close the vacuum valve.
Fig. 8
Adjust heating with the heating control.
Fig. 9
Wash the tube with the sprayer to suck up the
residues of the sample solution.
Fig. 10
Clean the tube with the cleaning rod and
defatted cotton.
Fig. 11
Pos 2: 2 pole fuse holder and mains
1047 Instruction Manual, Rev. 2.2 10/00, 1000 3315
19
