DRUCKER DIAGNOSTICS SM006
MODEL 642E SERVICE MANUAL REV: A 5
6 SERVICE INSTRUCTIONS
6.1 Cleaning
a) The cabinet, rotor top and accessories shall be thoroughly cleaned using soap and
water, isopropyl alcohol, or a mild bleach solution.
b) Under no circumstances should any of the following be used: Fully/Partially
Halogenated Hydrocarbons, Ketones and Esters.
c) Use of any chemicals not prescribed by the manufacturer may cause damage to the
rotor and tube carriers / holders and shall not be used.
6.2 Removing the Rotor
a) Use a 1/2” nut driver to loosen the center rotor screw (turn counter-clockwise).
b) Lift the rotor straight up and out of the rotor chamber.
c) To install the rotor, reverse steps A and B above.
d) Take care to align the hub spines with the rotor hub.
e) Tighten the rotor nut by hand with a ½” nut driver until snug. A good rule of thumb is
one full thread showing above the nut is a good indicator of proper installation.
6.3 Maintaining the Rotor
a) Keep the rotor clean, any corrosive materials must not be allowed contact with the
rotor and should be cleaned immediately.
b) The rotor should be checked periodically for signs of wear.
c) Remove the rotor from service if any of the following are found: cracks, deep scratches,
corrosion or discoloring.
6.4 Rotor Nut
a) If the rotor screw needs to be tightened, use a ½” nut driver and tighten it by hand until
snug.
b) Rule of thumb: One full thread showing above the nut is a good indicator of proper
installation.
6.5 Speed Calibration
a) Check the centrifuge speed periodically, we recommend every two years.
b) Important: When verifying rotor speed, make certain that all tube holders are installed
in the rotor.
c) No calibration adjustment of speed can be made, only a verification of rotor speed.
6.6 Line Leakage
a) Check the centrifuge’s line leakage periodically, we recommend every two years.
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