Gunite machine ,aka shotcrete machine, is widely used under construction area. How to avoid problems while using &nbsp;shotcrete machine?Actually there’s some preventative maintenance tips. Start with typical maintenance to prevent problems in the following order:<br /> 1) Are the bowl and wear plate flat, in good condition, and have a low run-out (.005″ or 0.13MM max)? <br /> 2) If the bowl and/or wear plate have been re-ground are the proper spacers being used? The idea is to have the top surface of the wear plate as close as possible to the bottom edge of pad housing without any contact. <br /> 3) Does the rock shear have a sharp square edge and has it been adjusted after meeting requirements items 1+2? <br /> 4) Is the felt seal lubricated and is it readjusted every time a bowl/wear plate dimension is changed by grinding or replacing? Is the felt seal retainer ring intact? <p> <br /> </p> 5) Is the pad backup assembly in good condition so it properly and equally tensions the wear pad?<br /> 6) Is the wear pad and pad clamp mounted and tightened firmly and equally? If it is a cam operator, check for equal contact between cam/pad backup plate with feeler gauge.<br /> 7) Check for clogging in the dust collection system from the intake housing all the way through to the bag (if incorporated on the machine)<br /> 8) Ensure that the feed wheel housing is secure and square to the base plate assembly. On locking lug models check for gaps with feeler gauges between feed wheel housing lugs and base plate receivers while in the locked position. All need to be positively locked.<br /> 9) Make sure the spindle bearings are good. There should be no play or movement of agitator shaft when tightly secured to spindle/bowl/wear plate.<br /> 10) Agitator needs to be very tight in order to seal wear plate to bowl and to secure both to the spindle. <p style="text-align:center;"> <img src="/upfiles/news/image/20151219/20151219164301_1041.jpg" width="840" height="630" title="Preventative Maintenance Tips for Gunite Machine " alt="Preventative Maintenance Tips for Gunite Machine " /> </p>