Maintenance
Chapter 4
Zetasizer Nano Essentials
Page 4-5
Once the cell has been disassembled, cleaning can be performed as described in the
following table. The material and chemical compatibility of each component is
detailed in Appendix A of the User manual.
Once cleaned, leave all parts to dry before re-assembling. Re-assembly is the
reverse of dis-assembly. Take care not to damage the sprung electrodes located in
the rear casing.
Replacing the system fuse
Warning!
Fuses must not be replaced by the operator. Only the supervisor or a Mal-
vern representative should attempt to change the fuse.
If the instrument does not power up, check the system fuses. These are in the
mains power switch on the rear panel.
Before changing a fuse, disconnect the instrument from the mains power.
Component
Cleaning method
Screw cap
Wipe clean with a mild soap solution
Outer casing
Black part of casing (Delrin):
Wipe clean with a mild soap solution
Metal part of casing (Stainless steel):
Immerse the casing in Hellmanex and place in a gentle
ultrasound bath (30 Watts) for five to 15 minutes.
Rinse with water once cleaned.
Electrode
chambers and
port
Electrode Chamber:
Scrub gently with interdental brush and Hellmanex, then scrub
with copious amounts of de-ionised water.
Smaller internal bore:
Scrub gently with interdental brush and Hellmanex, then scrub
with copious amounts of de-ionised water.
Quartz
measurement
cell block
Scrub both internally and externally with interdental brush.
Afterwards brush with copious amounts of water
Note: Once inserted back into assembly, a cotton bud with
ethanol can be used for light cleaning of the outside of the cell
block. This is only to remove any errant marks that may have
occurred when assembling the cell.
Man0382-5.0 (Zetasizer Nano Essentials).book Page 5 Wednesday, December 2, 2009 12:06 PM
