8530 Shatterbox Manual 100713 abridged - SPEX SamplePrep

4.3 Safety Interlock (Cont’d)8530 Shatterboxzero, the motor shuts off, the timer displays RUN COMPLETE, and the lid stays latched for 5seconds to allow the grinding mechanism to slow down. After 5 seconds the lid unlatches withan audible click, and the timer re-sets. Always wait until the lid is unlatched before opening it.If the safety interlock cannot engage, the mill will not start, and ERROR: LATCH FAILUREappears in the timer display. When the problem has been corrected and the Interlock canengage, the ERROR display will continue until the stop button is pushed. Only when the timesetting (example: 3:00 REMAINING) reappears in the display can the Shatterbox be started.The only exposed part of the Safety Interlock is a U-shaped metal latch which protrudes fromthe inside lip of the lid and can be seen when the lid is lifted. Please do not damage this latch bytrying to open the lid before the latch disengages. If this part of the interlock is damaged andcannot latch properly, the Shatterbox will not start.4.4 Cam-Action ClampThe cam-action of the clamp makes it possible to hold any SPEX Shatterbox grinding containerfirmly in place without applying excessive pressure to the lever. The clamp can also be adjustedeasily for containers of different heights, or to compensate for wear. It is absolutely necessaryto adjust the clamp properly before using it, as overtightening the clamp can damage it. Suchdamage is not covered by the warranty. The different parts of the clamp are illustrated inDiagram A.To use the clamp, first swing the clamp arm to the left side of the cabinet and the clamp leverto the right. Then place a grinding container squarely in the recess of the capsule retainer. (Ifthe container is not firmly seated, it can work itself loose during grinding.) The use of a 31688Friction Disc in the capsule retainer recess, under the grinding container, is recommended at alltimes; it lessens noise, aids the gripping action of the clamp, and prevents rapid wear of thecapsule retainer.When the grinding container is in place, swing the clamp arm to the right, so the guide fits overthe boss (raised protuberance) in the center of the container lid. Then bring up the clamp leverso that the open gate at its base fits over the end clamp arm; the roller in the clamp leverassembly should rest in the curved recess of the clamp arm. Swing the clamp lever over to theleft. If the lever meets strong resistance, STOP! The clamp is not properly adjusted and mustbe loosened. Overtightening the clamp can break the cam mechanism.The best way to adjust the clamp is to screw the guide back into the clamp bar until contactwith the grinding container is loose. Then extend (unscrew) the guide until the clamp becomessnug. Ideal tightness for the clamp is just past the point where the grinding container can berotated with the clamp lever down. When the clamp is perfectly adjusted, the lever will meetmoderate resistance as it is pushed through the top of its arc, then close easily.Page 8 of 28 SPEX SamplePrep LLC January 2010