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FAQ Sections

  1. Mixers
  2. Fedco
  3. SuperGrain Moulders


  1. How can I prevent premature damage to my agitator shaft?
    • Regular shaft seal cleaning helps prevent leakage and damage to agitator shaft.
  2. How can I minimize danger to people operating the mixer?
    • Training. Training. Training. Test the limit and safety switch operation and adjustment, test the pushbutton safety circuit EVERY SHIFT.  Ensure proper training has been provided to all operators/maintenance/sanitation staff prior to allowing operation and give refresher training.  Establish and follow a Lockout / Tagout (LOTO) program for all production machinery in your facility.
  3. What can cause excessive wear to the drive sprockets?
    • Drive chain tension too loose or too tight will cause excessive wear to the sprockets and chain. Keep the chain properly lubricated.
  4. What is the mixing capacity of my mixer?
    • Mixing capacity for a given size of mixer will vary with the type of dough its moisture content and density of the dough.  There is a maximum as well as a miminum batch size for each mixer. 
  5. What effects the cooling of my product?
    • Cooling requirements have many variables. The mixing bowl, depending on its design, can only transfer a certain amount of heat from the dough. The largest producer of heat is the main drive motor. The removal of heat from the dough is based on the amount of time the dough is in contact with the cooled surfaces of the mixing bowl. Therefore the faster the mix time the less heat removed.
  6. When should I tighten/torque the bolts in my mixer?
    • This would include agitator hub and roller bar cap bolts, motor and reducer mounting bolts, coupling bolts, bowl mounting bolts, and sprocket and pulley bolts. This should be done after the first month of running and then on a semi-annual basis. Torque specifications are in the operation manual.
  7. What can deteriorate the lubrication on my mixer?
    • Power spraying (wash down) of a mixer can cause a loss of lubrication as can lack of lubrication for a period of time.
  8. Are there cleaning guidlines for my mixer?
    • Cleaning the inside of the mixing bowl, agitator, and the under side of the bowl cover (canopy) is not a problem. Cleaning the bowl mounting areas, transmission and electrical components is not recommended.  Please see the sanitation section in your operators manual, or you can download the sanitation section on the website under the Sanitation page.
  9. When should I replace the roller bar bushings?
    • A routine check of the roller bar bushings in agitator is recommended during each sanitation cycle. The roller bar bushings should be replaced if the roller bars have 1/8" up and down movement inside the bushing. The bushings do wear out over time.
  10. Should I inspect the UHMW side seals on the mixer bowl?
    • The UHMW side seals that are bolted to the under side of the bowl cover (canopy) should be inspected with the mixing bowl in the upright position to see if there is clearance between the bowl side seal and the UHMW side seal. If there is a gap loosen the bolts securing the UHMW side seal and move it against the bowl side seal and re-tighten the bolts.
  11. Should I inspect the canopy scraper on my mixer?
    • If the mixer is equipped with a canopy scraper, check it weekly for wear or damage. If it does not scrape the under side of the canopy clean it should be replaced.
  12. When should I inspect the rear rubber bowl seal?
    • If the mixer is equipped with a rubber rear seal, inspect it weekly for wear. Dough products build up on the surface of the seal and cause it to expand. This expansion can cause problems with the mixing bowl closing completely and may cause the bowl tilt limit switches not to activate at the proper time.
  13. When should I inspect the flour gate valve?
    • Inspect the flour gate valve for proper operation weekly. Old dough can build up on the moving parts of the gate and cause it to malfunction.
  14. When should I inspect the flour dust vent sock?
    • Inspect the Flour Dust Vent Sock weekly. It should be removed and cleaned on a weekly basis. It is highly recommended to have a spare sock handy to replace the dirty one.
  15. Should I inspect the mixer drive motor & reducer?
    • Inspect the drive motor and reducer for changes in noise level. Check the oil in the reducer. Change the oil in the reducer yearly. Lubricate the motor every 6 months. Follow the instruction in the machinery manual and use the proper type of grease in the motor.
  16. How should I inspect the bowl tilt system?
    • Inspect the bowl tilt system. Most are hydraulic. Look for hose leaks, fitting leaks, cylinder seals leaking, or leaks on the hydraulic power unit. Change the oil and filters in the system yearly, unless the environment where the mixer is running is dustier than normal, then change them more frequently.
  17. How should I inspect the cooling hoses on my mixer?
    • Check the condition of the cooling hoses for cracks and frayed spots. Replace the hoses yearly to prevent hose breakage and loss of coolants.
  18. What checks should be done for the belts of a belt drive machine?
    • If the mixer is belt driven inspect the belts for tension and wear. Inspect the idler pulley drum bearings to insure they are in good condition. Replace the idler drum bearings yearly. If you need to remove the belt for any reason, measure the tension on the belts and record it. Mark the direction the belts are running and what position they are running on the pulleys. When they are put back into the mixer put them where they were, and re-tension them to the recorded tension.
  19. Double Arm Mixer gear inspections.
    • Double arm mixers have a gear case mounted on the mixing bowl that transfers the power from the input shaft to the agitators. Inspect the gear case for oil leakage. Feel the bearing housings mounted on the sides of the gear case for excessive heating. Change the oil in the gear case yearly.
  20. Double Arm Mixer Trunnion Rollers inspections.
    • Double arm mixers have Trunnion Rollers in which the mixing bowl rotates for   tilting. Inspect the rollers as the bowl is tilted to insure that the roller turn. If you notice any flat spots on any of the rollers, replace them.
  21. Why doesn’t my mixer lube system work?
    • Most mixers are equipped with manual central lube systems. If there is any difficulty with the system not taking grease, one of the valve blocks may have a stoppage. Refer to the manual section for a trouble shooting procedure.

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  1. How often should I change the O-Rings in my Fedco depositor?
    • Every 800 – 1000 hours.
  2. My Fedco depositor is beginning to drip excessively between drops. What can cause this?
    • First ensure that the surfaces of the die and valve chamber are free of any batter build-up. If these surfaces are clean and smooth check your rotary valve and chamber for wear.
  3. My Fedco bowl pump has been slowing down. What’s up with this?
    • Check air pressure. Should not be below 70psi and not drop any more than 5psi while pumping out the bowl. Other problems may include worn cylinder seals or bent pins at the ball checks.
  4. I am getting large pockets of air in the product coming out of my Goodway mixer. What should I look for?
    • Check to make sure your flowrator is working properly.
      Check that all fitting joints have gaskets and are properly tightened.
      Check the sleeve in your backpressure valve for leakage.
  5. I am running a new product in my Goodway mixer and I am experiencing a temperature rise that is unacceptable. My front and rear stators are jacketed and cooled. What can be done?
    • Peerless offers a center cooling plate that can help maintain a proper temperature. Contact parts and service for more information on what would be required to change over your head.
  6. I have a Fedco APD model depositor and have recently experienced moisture build up in my scaling enclosure causing premature failure of my encoders. What can I do about this?
    • We have made several changes in the design of the scaling enclosures since the original design. Your machine can be retrofit with the latest design thereby reducing moisture damage. Contact Peerless Machinery for more information.
  7. I have a Fedco spin disk applicator. Recently, I have been experiencing vibration and my spinner motors are not holding up well. What can I do?
    • Check for worn and damaged spinners. This will cause vibration and accellerate motor wear.
  8. Why don’t you stock air cylinders?
    • The cost of stocking the hundreds of different varieties of cylinders for all applications is prohibitive. Cylinder manufacturers stock only the parts and cylinders are built upon order. We recommend you stock a replacement cylinder and repair kits. When your cylinder fails you can replace it and rebuild it to use as a backup.
  9. Recently I have been experiencing leakage from the ends of my chamber. I have replaced the o-rings on the rotary valve but it hasn’t helped. What’s wrong?
    • Your valve chamber is made of aluminum with a hard coat of anodizing. Years of operation will eventually cause wear in the chamber causing leakage. Check your bore for grooving and pitting. It may be time to replace the chamber and sleeve tubes or purchase a new machine.
  10. Lately my air cylinders and valves have not been holding up as long after replacing or rebuilding them. What’s my problem?
    • Check your air filter often and replace as needed. If your machine came with a lubricator, make sure it is set properly and that you are using the proper lubricant. If your machine did not come with one it may help to add one in line.

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SuperGrain Moulders

  1. When should I clean the scrapers on my SuperGrain sheeter?
    • When a noticable buildup of dough is seen on the scraper's edge, if a noticable amount of doubles are being created while sheeting or if sheeted doughs are uneven in thickness and possible center damage is noticed.
  2. When should scraper clearance be adjusted?
    • If a noticable amount of build-up is seen on the edges, but certainly once a week to compensate for normal wear of the Teflon (if so equipped) surface.  Also, if clearance is the suspect cause of causing a hang-up or double.
  3. What is the best roller/scraper clearance for soft doughs?
    • This is a function of roller run-out which can be from .002" to .003" (note that ball bearings supporting the rollers have a run-out of up to .002" as well).  Set the scraper clearance a minimum of .002" more than the observed run-out.
  4. What is the best roller/scraper clearance for stiff/cold doughs?
    • Typically cold or stiff doughs require a greater clearance to avoid damage from a double.  In addition, stiff doughs can slow down while sheeting and form a mass that pushes against the scraper plates causing deflection.  As such, we recommend clearances up to .012".  In extremely stiff doughs, removal for the front scrapers may be required.
  5. When should I change my scrapers?
    • They can no longer be adjusted to recommended tolerances. Whenever you have replaced or resurfaced your sheeting rollers.
  6. What materials can be used for scrapers?
    • Both plastic and steel are successfully used and the critical factor is to have a low coefficient of friction to avoid slow down of the output so that doubles are not created.  It is also critical to maintain a parallel edge to the roller surface.
  7. How often should I replace my moulding belt?
    • After approximately 2000 operating hours or if an excessively smooth surface develops which can be a source of doubles.
  8. I am running a dry dough ( 50-55% ) absorbtion and having problems getting the dough to seal. What can I do?
    • Sealing a stiff dough is best accomplished by thin sheeting, heavy curling chain and slower moulding conveyor speeds.
  9. Why should I pay a premium for SuperGrain replacement parts?
    • All SuperGrain parts are made to original specifications and close tolerences.
  10. I can no longer adjust the gap on my sheeting rollers close enough to get the desired thickness on my dough sheet. What can I do?
    • Make sure there are no obstructions preventing your roller slides from full travel in your side frames. Check for excessive wear of roller. The roller diameter should be no less than 4-13/16”.
  11. The original gearsets on my SuperGrain sheeting head lasted for years but the replacements I have been installing don’t last nearly that long. Are your gears special?
    • Yes. Original SuperGrain replacement gears are machined to close tolerances and are case hardened to our specifications to last longer.
  12. When should the moulding head gearing be lubricated?
    • After the initial break-in period and at least once a week.  Please consult your owner's manual for periods based on hours run.
  13. What minimum roller diameter can I run and still obtain quality results?
    • Peerless has experimented with roller from 4 1/2" up to 6 7/16" in diameter will good results, but there is a relationship between the moulder design and the products run as well.  What becomes critical is the scraper's angle to the discharge.
  14. What types of roller coverings does Peerless offer?
    • We offer several types, depending on the products being run, or customer preference.  White virgin Teflon works beast for soft doughs where gentle sheeting reduction is desired.  If your dough has inclusions such as whole grains or seeds, the this covering can be easily damaged and we recommend a stiffer version of Teflon - we use a green color to denote this.  For cold, or firm doughs we recommend UHMW PE coverings.  These coverings can last up to 4 times longer than Teflon, but do need to be buffed occasionaly as they do "fuzz."

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