The end of the year is a great mile-marker for annual maintenance. An ounce of prevention is worth years of cure on Comco machines. Check out the maintenance tips below to make sure your system is in excellent shape for the new year.
1. Stock-up before winter shutdowns
First and foremost, double-check your supplies. That includes nozzles, abrasive, abrasive hose, window shields and tune-up kits. Winter weather and holiday closings can bring blasting to a standstill if you are caught unprepared. Prevent production interruption by making sure your team has what they need to get through the next few months.
2. Check the PowderGate Nosepiece
If the channel becomes wide and deep enough, the nosepiece will not form a seal with the output fitting when the PowderGate closes. Air and abrasive will continue to find a passage, and the constant low-level seep will eventually erode the output fitting, too.
PowderGate parts diagram
How to Check It and Replace It
Make sure your Comco blaster is ON but not blasting (footswitch is not pressed). Put your finger over the opening of the nozzle for a few seconds, then release it. If you feel or hear a burst of air exit the nozzle, that indicates a leaky nosepiece. Replace it immediately. The nosepiece is easily accessible from the side of the AccuFlo® without having to remove the cover of the unit.
Contact Technical Support at email@example.com or 1-800-796-6626 if you have any questions about wear and replacement.
The Comco part number for the PowderGate Nosepiece is MB1653.
3. Check the Modulator
Watch for Low Flow
When a modulator is too worn to seal properly, the abrasive stream starts off strong but drops off to almost nothing within 3-5 seconds.
Track Blast Hours
This is the most accurate way to manage modulator maintenance. The AccuFlo modulator has a lifespan of 5,000 blast hours; whereas, the modulator on the MicroBlaster, Powerflo® and DirectFlo™ last about 2,000 blast hours.
Listen for a Rattle (MicroBlaster® only)
In the MicroBlaster, a good modulator hums, and a worn modulator rattles.
NOTE: The AccuFlo features a re-designed modulator that works better and lasts longer. Learn why.
The Comco part numbers for each modulator:
- AccuFlo: MB2250-1 (115V) and MB2250-2 (230V)*
- MicroBlaster: MB1301-2*
- PowerFlo/DirectFlo: PF2040*
*Appropriate for standard models only.
4. Check the HEPA filter
HEPA filtration removes 99.97% of particles from the work chamber in the ProCenter Plus™ workstation. When the mallets can no longer knock spent abrasive from the filter surface, then the HEPA filter is full and needs to be replaced. HEPA filters tend to reach capacity after 6-9 months of regular use.
Replace every 3 months if…
If your blasting system runs all day and/or processes a high volume of parts, then replace the HEPA filter after 3 months of use. If you are blasting with abrasive that is smaller than 25-microns in size or if you are blasting with sodium bicarbonate, then you should also replace the filter after 3 months of use. Sodium bicarbonate breaks down into dust after blasting, and those extremely fine particles embed deep into filter pores.
The Comco part number for the HEPA Filter is CTR280-1.
5. Check out the new Replacement Parts page
Consult your manual to do a full inspection of your Comco equipment. If you notice wear on components that are not mentioned above and need to replace them, use the new Replacement Parts page to see exploded diagrams and access part numbers and descriptions.
Don’t forget to consult the FAQs on the Support page if you have additional questions, and of course, we are always here to help!
Notice Moisture or Oil?
If you notice moisture or oil contamination inside your blaster, read this. You will need to send your machine in for repair. To obtain an RMA#, contact Technical Support at firstname.lastname@example.org or 1-800-796-6626.