Maintenance; Cleaning - HTL DISCOVERY PRO DP2 Manual De Instrucciones

CAUTION: The pipetting procedure should be conduct-
ed in accordance with the rules described in sections 3
and 4.
Recalibration procedure:
• Set the dose volume depending on the pipetted volume
according to Table 5.
Range of the
Model pipettes
volumes [μl]
DP2 0.1 - 2
DP10 0.5 - 10
DP20 2 - 20
DP100 10 - 100
DP200 20 - 200
DP1000 100 - 1000
Table 5
• Perform 5 aspirations, weigh each one and calculate
the average value of the aspirations.
• Calculate average aspirated volume in [μl] by multiplying
the average aspiration amount [mg] by the distilled
water density coefficient [μl/mg], which depends on
temperature and pressure (Table 4).
• If the average aspirated volume exceeds the permissi-
ble values, pipette recalibration should be conducted.
Pipette recalibration consists in setting the real value
obtained during weighing on the counter. To do so, the
following should be conducted:
A
B
Fig. 5
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Preset Permissible
volume volumes
[μl] [μl]
0.2 0.176 - 0.224
0.5 0.48 - 0.52
2 1.92 - 2.08
10 9.84 - 10.16
20 19.76 - 20.24
100 98.4-101.6
C
• Remove the cap (fig. 1D) using the calibration key
(fig. 5A),
• Set the calibration switch (fig. 1E) in its upper position
(fig. 5A),
• Insert the calibration key into the ejector orifice (fig. 1C)
and place it in the calibration screw of the counter
(fig. 5B),
• Turn the key so as the volume indicated by the counter
is equal to the average calculated volume.
• Remove the calibration key and set the calibration switch
in its lower position (fig. 5C), thus going to the pipetting
mode,
• Place the cap of the ejector pushbutton (fig. 5C).
After conducted the calibration procedure it is recom-
mended to record recalibration.
CAUTION: Before calibration, the volume adjustment
knob should be blocked. If the knob is shifted after
switching the pipette on the calibration mode ("CAL"),
calibration of the pipette will be changed without a visible
change in settings of the counter.

6. MAINTENANCE

The pipette requires periodic maintenance, depending
on the applications performed and intensity of use. The
subassemblies subject to action of aggressive solution
vapors, such as shaft elements, should be regularly
inspected and cleaned.
To conduct correct maintenance procedure, familiarize
with the structure of the shaft set described in section 8
and observe the instructions given in this section.
WARNING!
Do not use sharp tools during the maintenance. It may
damage the device and impair your safety.

6.1. CLEANING

External surfaces of the handgrip, knob and pushbuttons
may be cleaned with a tissue dipped in isopropyl alco-
hol. The remaining elements removed from the pipette
during disassembly can be washed with distilled water or
isopropyl alcohol.
CAUTION:
Use of cleaning solutions not recommended by the manu-
facturer may impair the safety of the user and damage
the device.
ENGLISH
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