Scilogex Unoverse Peristaltic Pump Dispense 9100 - Manual (Page 2)

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13. FAQ
1. Q. Why does the pump stalls or runs slower than expected when new
tubing is installed?
A. A new Santoprene tube is stiff when new so has to be shaped for some time
before it gains it’s elasticity. Run the pump in continuous mode for a total of
approx 5 minutes with the clamp lever half open to start with, gradually moving
the clamp lever to fully closed position.
2. Q. What is the life of the tube?
A. The life of a peristaltic tube depends on many variants such as
speed, the reagent it is pumping and temperature. In general you should
expect approximately 800 hours operation from one tube.
3. Q. Why does the displayed value sometime ‘jump’ in double
figures?
A. This happens when dispensing small volumes with the ID2.0mm
tubing. Following the calibration procedure the instrument’s
mathematical calculation divides the volume to be dispensed by the
number of pulses received from the motor’s encoder and stores this
value. If the volume per rotor rotation is relatively large, the ratio of
pulses to volume is coarse. In these circumstances the required volume
input does not divide into stored values, and therefore the calculator will
round up or down to the nearest whole figure. Whenever you use the
ID1.0mm tube, the dispensed volume per rotor rotation is small enough
to allow single μl per displayed digit.
4. Q. Can I leave the unit switched ‘ON’ throughout the day?
A. Yes, you can. The dispenser requires very little energy when the
pump is not running so continuous power into the unit will not harm it.
5. Q. Why can’t I set slower dispense speed ?
A. The motor’s speed is controlled via the voltage supply to the motor.
Too low voltage and the pump’s motor will stall, in particular when the
tubing is new and the resulting load on the motor is higher.
6. Q. Can I dispense hot reagents using the dispenser?
A. Yes, the dispenser to works safely with media temperatures of up to
100°C. Be aware that the internal electronics could be damaged by any
ingress of fluids or steam vapours.
Acetaldehyde Chloroacetic acid Linseed Oil Potassium salts
Acetic acid Chronic acid Magnesium salt Silver salts
Acetic Anhydride Chromium salts Maleic acid Soap solutions
Acrylonitrile Copper salts Manganese salts Sodium salts
Aluminum Chloride Ethylene glycol Mercury salts Sodium hydroxide
Aluminum sulfate Ferric salts Methanol Sodium hypochlorite
Ammonia Fluoborate salts Natural gas Stearic acid
Ammonium salts Fluoboric acid Nickel salts Sulfur dioxide
Ammonium hydrox-
ide Fluosilicic acid Nitric acid-10% Sulfuric acid, dil.
Amyl acetate Formaldehyde Nitroethane Sulfurous acid
Antimony salts Formamide Nitrogen oxides Tannic acid
Arsenic salts Formic acid Nitrous acid Tanning extracts
Barium salts Glucose Oils, animal Trisodium phosphate
Benzoic acid Glycerins Oils. mineral Urea
Bleaching liquor Hydrochloric acid Oils. vegetable Uric acid
Boric acid Hydrocyanic acid Oxalic acid Water
Bromine Hydrogen peroxide Oxygen Water (brine)
Butyric acid Hydrogen sulfide Phosphoric acid Water (stoam)
Calcium salts Iodine and solutions Phthalic acid Zinc salts
Carbon Dioxide Lactic acid Phosphoric acid
Chlorine (wet/dry) Lead salts Plating solutions
Acetates Butane Me Et Ketone Skydrol 500-B4
Acetone Butanol Nitric acid-30% Sulfuric acid-90%
Alcohols Essential Oils Nitrobenzene Tetrahydrofuran
Amyl alcohol Ethers Oleic acid Turpentine
Aniline Ethanol Phenol
Benzaldehyde Furfural Propanol
Benzyl alcohol Lithium grease Pyridine
Benzene Cyclohexane Kerosene Nitric acid- 70%
Carbon tetrachloride Ethyl chloride Trichloroethylene Perchloroethylene
Chlorobenzene Freon Lacquer Toluene
Chloroform Gasoline, unleaded Naphtha Xylene
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Chemical compatibility chart