Maintenance and Troubleshooting 5
708-DS / 709-DS Operator’s Manual 117
 
4 Following ESD guidelines, inspect all printed circuit board 
assemblies (PCBA) for corrosion and debris. If debris is found, use 
pressurized inert gas to expel it from the board. Also, ensure that the 
PCBAs are securely attached.
5 Following ESD guidelines, ensure all connectors are securely 
fastened to each PCBA and to the power supply, switch, sensors, or 
motors. Also inspect the connectors and cabling for damage.
6 Lubricate the linear bearing upright supports with 3-in-1 oil.
Sample Line / Paddle / Basket Care
Shafts
• When using with corrosive materials such as hydrochloric acid or 
media containing salts, be sure to rinse them thoroughly with 
deionized water immediately after each use, and dry thoroughly with 
a soft towel or cloth.
• Do not clean with abrasive cleansers or cloths. Use deionized water 
whenever possible. If you must use a cleanser or solvent, be sure that 
it is as mild as possible, non-abrasive, and fully compatible with 
fluorocarbons and stainless steel before use. If in doubt, call the 
service department for advice before proceeding.
• We recommend that you do not use a laboratory dishwasher. Clean 
paddles and basket shafts only by hand. The high temperatures to 
which your items would be subject in a dishwasher may damage the 
fluorocarbon coating.
• Be sure to handle with care. If you must clean or handle the shafts 
while they are still mounted on the instrument, use minimal pressure 
on the shaft to prevent them from bending. When secured in the drive 
unit of the instrument, just a little bit of pressure exerted on the 
shaft—especially near the blade or basket—can easily bend the shaft 
and cause significant wobble. 
• Use care when removing vessels from the apparatus while the 
paddles or basket shafts are installed so that you do not bump them. 
• When attaching or removing baskets, do not bend the clips 
excessively.