22
Maintenance
6.2 Calibrating the Automatic Re-pipettor
1. Use the supplied instruction sheet to assemble the re-pipettor.
2. Fill the bottle with deionized water.
3. Prime the re-pipettor several times, then place next to a
top-loading balance. Put a weighing boat on the balance pan
and tare the balance.
4. Set the re-pipettor to 0.75 mL using the lock screw.
5. Dispense water into the weighing boat.
6. The weight in grams is the volume of water dispensed in mL. If
the weight is less than 0.75 g, set the screw up higher and try
again. If the weight is more than 0.75 g, set the screw down
lower and try again.
7. Repeat until the weight is 0.75 g for three consecutive
measurements. Check the calibration of the re-pipettor at
least monthly.
6.3 Fuse Replacement
DANGER
Fire hazard. Always replace fuses with fuses of the same type
and rating.
DANGER
Risque d'incendie. Remplacez toujours les fusibles avec des
fusibles du même type et du même calibre.
Important Note: 100–115 V models: Although there are positions
for 2 fuses in the 100–115 V Micro Dist model, only the upper fuse
in the fuse drawer is connected in the circuit. A spare fuse may be
present in the lower slot, but it is not required.
Note: Fuse failure is generally an indication of a problem with the
equipment. If fuses continue to fail, contact the service center for return
authorization and repair.
1. Switch the Micro Dist heater power switch to the off position
(O). Disconnect the power cord from the appliance inlet.
2. Locate the fuse drawer. Pull the fuse drawer from the appliance
inlet module.
3. Remove the fuse(s) from the fuse drawer and install the new
fuse(s) of the same type and rating. Use only T, 15A, 125 V (for
100–115 V operation) or T, 6.3A, 250V (for 230 V operation)
fuses.
4. Replace the fuse drawer and push it all the way in. Reconnect
to power.
6.4 Parts
Other than the fuses, there are no user-replaceable or
user-serviceable parts. Contact the factory for repair/service
information.
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