PIAB C Series Troubleshooting Manual
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PIAB C Series Troubleshooting Manual

Vacuum conveying
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VACUUM CONVEYING
C Series Conveyor
Troubleshooting Guide
www.piab.com

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Katu Isom
January 20, 2025

how different types vacuum seals are located in this vacuum pump system

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1 comments:
Mr. Anderson
May 14, 2025

Different types of vacuum seals in the PIAB Series vacuum pump system are located at various positions where leakage can occur. Specifically, leaks at seals are listed as a possible cause of low or no vacuum and are identified at position 3 in the troubleshooting guide. These seals are part of the pump assembly and should be inspected and replaced if leakage is detected. When the pump is disassembled for cleaning or maintenance, seals and flap valves should be checked and replaced to restore performance.

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Summary of Contents for PIAB C Series

  • Page 1 VACUUM CONVEYING C Series Conveyor Troubleshooting Guide www.piab.com...
  • Page 2 This manual provides you all the information In the design and manufacture of this equip- necessary for the successful installation, op- ment, PIAB has exercised the utmost care to eration and maintenance of your unit. We ensure many years of trouble-free operation.

  • Page 3: Table Of Contents

    Inside Components of MLL Pumps MLD100 Components TROUBLESHOOTING GENERAL TROUBLESHOOTING L SERIES PUMP TROUBLESHOOTING CU-1A/B PIAB Control Unit CU-1A/B & CU-2A/B CU control function and pneumatic diagrams / Pipe emptying TROUBLESHOOTING PPT/R PIAB Control Unit PPT/R PPT/R control function and pneumatic...

  • Page 4: Safety Instructions

    SAFETY INSTRUCTION Instructions for building into a system Cleaning of filters PIAB vacuum conveyors are CE marked. The person It is important to check and clean/change filters at reg- who installs the conveyor in another main system has ular intervals so that they are not clogged, as this...
  • Page 5 Installation of compressed air The feed pressure of the compressed air is between 0.4 (58) and 0.6 (87 psi) MPa for PIAB vacuum convey- ors and pumps. Careless usage of compressed air may cause injuries. The compressed air may not be used for any other pur- Compressed air pose than specified.
  • Page 6 After that, the pipeline may be disconnected. Please contact your local PIAB distributor as to dimen- Dismounting the conveyor sioning of the diameters of the pipes, their length,...

  • Page 7: Connection Examples

    VACUUM CONVEYORS CONNECTION EXAMPLES CONTROL UNIT CU-1A/B ART. NO. 01 04 550 ART. NO. 01 04 552...
  • Page 8 VACUUM CONVEYORS CONTROL UNIT CU-1A/B WITH FLUIDISATION ART. NO. 01 04 550 ART. NO. 01 04 552...
  • Page 9 VACUUM CONVEYORS CONTROL UNIT CU-1A/B WITH FLUIDISATION AND LEVEL DETECTOR ART. NO. 01 04 550 ART. NO. 01 04 552...
  • Page 10 VACUUM CONVEYORS CONTROL UNIT CU-1A/B USDA ART. NO. 01 04 550 ART. NO. 01 04 552...
  • Page 11 VACUUM CONVEYORS CONTROL UNIT CU-2A/B ART. NO. 01 04 540 ART. NO. 01 04 548...
  • Page 12 VACUUM CONVEYORS CONTROL UNIT CU-2A/B WITH FLUIDISATION AND LEVEL DETECTOR ART. NO. 01 04 540 ART. NO. 01 04 548...
  • Page 13 VACUUM CONVEYORS CONTROL UNIT CU-2A/B WITH FLUIDISATION ART. NO. 01 04 540 ART. NO. 01 04 548...
  • Page 14 VACUUM CONVEYORS CONNECTION EXAMPLES...
  • Page 15 VACUUM CONVEYORS VALVE UNIT VCC-EP VALVE UNIT VCC-EP WITH FLUIDISATION...

  • Page 16: Achieving The Desired Rate

    Is the air pressure at least 87 psi entering into the pump, in the proper line size, and with enough volume? Conveyor Min. Compressed Max. Required Air Line Volume (scfm) C21 100 classic .25 "14.8 C21100 "14.8 C series 200 "29.7 C series 400 "59.0 C series 600 "89.0 C series 800 "118.6 C series 1200 "178.0 C series 1600 "237.3...
  • Page 17 VACUUM CONVEYORS C. If there is little to no transport of material with a low vacuum, but the conveyor is still cycling properly. 1.The seals in between the modules may be cracked and leaking. 2.There may be a loose connection somewhere with the hose. 3.There may be too much aspiration.

  • Page 18: Filter Replacement

    VACUUM CONVEYORS FILTER REPALCEMENT...
  • Page 19 VACUUM CONVEYORS...
  • Page 20 VACUUM CONVEYORS FILTER CLEANING It may be necessary to clean the filter elements under certain circumstances, e.g. after a change of product. In this case, you are welcome to draw on our experience! We shall be glad to help you choose the best cleaning method. PITEX CLEANING cleaning procedure: 1.
  • Page 21 VACUUM CONVEYORS HERDING SINTERED RINSE OFF CLEANING Rinse-off cleaning procedure: 1. Your filter elements have to be dismantled in order to be cleaned. 2. Stand the filter elements in a vertical a position as possible (e.g. lean them against a wall, see the drawing). 3.
  • Page 22 VACUUM CONVEYORS GORE SINBRAN BRUSH OFF CLEANING Brush-off cleaning procedure: 1. Your filter elements have to be dismantled in order to be cleaned. 2. Stand the filter elements in a vertical a position as possible (e.g. lean them against a wall, see the drawing). 3.

  • Page 23: Cleaning And Maintaining The Pump

    CLEANING AND MAINTAINING THE VACUUM PUMP PIAB vacuum pumps are easy to clean and maintain. The only wear parts in the pumps are flap valves and gaskets. A slow, gradual loss in vacuum could be attributed to cracked gaskets or flap valves.
  • Page 24 VACUUM CONVEYORS TROUBLESHOOTING Type of trouble Cause Position Low/no pressure in compressed-air pipeline 1 Compressed-air connection Leakage at seals 3 Seals Too much carrier air 7 Valves for carrier air Low/no vacuum Bottom lid is open/does not work 5 Bottom lid Hose connection of filter shock/pump is defective 4 Filter shock Leakage in conveying pipeline/joints...
  • Page 25 VACUUM CONVEYORS TROUBLE SHOOTING GUIDE: PIAB L SERIES PUMP Problem Possible Causes Possible Solutions Pump will not turn on On/Off knob safety clip has not been Check to be sure safety clip has been removed·Ball valve found next to regulator...
  • Page 26 VACUUM CONVEYORS L100 - L1200 COMPONENTS Spare Parts Kit 3101091(V)(E) Spare Kit MLL100-400, co nsisting of :3101140 Flap valve, 3 pcs .3101136 Side plate gasket, 2 pcs. 3101134 Inlet gasket MLL200-400, 1 pc 3101092(V)(E) Spare Kit MLL600-800, consisting of :3101141 Flap valves 300, 3 pcs. 3101136 Side plate gasket, 2 pcs.
  • Page 27 VACUUM CONVEYORS Pos. Art. No. Designation Number MLL200 MLL400 MLL800 MLL800 3101056 3101057 3101058 3101058 31 00 025 Housing incl. nozzles MLL200 31 00 026 Housing incl. nozzles MLL400 31 00 027 Housing incl. nozzles MLL800 31 00 028 Housing incl. nozzles MLL1200 31 00 053 Silencer internal MLL 100-400 complete 31 00 055...
  • Page 28 VACUUM CONVEYORS MLL PANEL COMPONENT Pos. Art. No. Designation Number Panel Panel Panel MLL 200,400 MLL600,800 MLL1200 31.01.017 31.01.017 31.01.018 31 01 366 Panel MLL 200, 400 31 01 368 Panel MLL 600 800 31 01 376 Panel MLL 1200 31 01 602 Vacuum gauge 31 07 072...
  • Page 29 VACUUM CONVEYORS INSIDE COMPONENTS OF MLL PUMPS...
  • Page 30 VACUUM CONVEYORS INSIDE COMPONENTS OF COMPRESSED AIR INLET FOR MLL PUMPS Pos. Art. No. Designation 31.07.111 Barrel Connector R3/8 31.07.194 Barrel Connector M24xM24 31.07.031 Hose Connector M5 D=2 31.07.030 Hose Connector M5 D=4 31.16.055 Shuttle Valve 31.07.626 Hose, Nylon 4x2 31.07.640 Hose, Nylon 6x4 31.07.120...
  • Page 31 VACUUM CONVEYORS L100 CLASSIC COMPONENTS...
  • Page 32 VACUUM CONVEYORS L100 CLASSIC COMPONENTS Spare parts list for MLD100 34.01.072 used for C21 Conveyor Pos. Art. No. Designation MLD100 32.00.002 Housing L/1 32.00.008 Int Housing incl Nozzle 32.01.103 Valve Plate DC 32.01.106 Side Plate HLM 32.01.134 Panel L250D 31.01.613 Vacuum Gauge 32.01.111 Exhaust Plug...
  • Page 33 Put 4mm plug into port #44, jump using a 4mm tubing between port #42 and port #43 The control unit did not cycle Component problem inside the control unit Call PIAB, 1-800-321-7422 to arrange repair or replacement Connections for inlets and outlets Indications on...
  • Page 34 Put 4mm plug into port #44, jump using a 4mm tubing between port #42 and port #43 The control unit did not cycle Component problem inside the control unit Call PIAB, 1-800-321-7422 to arrange repair or replacement Connections for inlets and outlets Indications on...
  • Page 35 VACUUM CONVEYORS DIMENSION CONTROL UNIT CU-1A, CU-1B, CU-2A, CU-2B WITH MOUNTING BRACKET ART. NO. 01 03 918 ART. NO. 01 03 919 ART. NO. 01 03 920 ART. NO. 01 03 921...
  • Page 36 VACUUM CONVEYORS FUNCTIONS OF THE CONTROL UNIT CONTROL UNIT CU-1A/B, CU-2A/B ART. NO. 01 04 550, 01 04 552 ART. NO. 01 04 540, 01 04 548 CU-1A Art. No. 01 04 550 CU-1B Art. No. 01 04 552 CU-2A Art. No. 01 04 540 CU-2B Art.
  • Page 37 VACUUM CONVEYORS THE FOLLOWING FUNCTIONS CAN BE ADJUSTED BY THE OPERATOR Control unit CU-1A Conveying time. Adjustable, 0.1–30 seconds. Time for emptying of conveyor. Adjustable, 0.1–30 seconds. The bottom valve is open when the conveyor is turned off. Control unit CU-1B Conveying time.
  • Page 38 VACUUM CONVEYORS CONTROL UNIT CU-1B, BOTTOM VALVE NC ART. NO. 01 04 552...
  • Page 39 VACUUM CONVEYORS PNEUMATIC DIAGRAM CONTROL UNIT CU-1A, BOTTOM VALVE NO ART. NO. 01 04 550...
  • Page 40 VACUUM CONVEYORS CONTROL UNIT CU-1B, BOTTOM VALVE NC ART. NO. 01 04 552...
  • Page 41 VACUUM CONVEYORS CONTROL UNIT CU-2B, BOTTOM VALVE NC ART. NO. 01 04 548...
  • Page 42 VACUUM CONVEYORS TROUBLESHOOTING GUIDE: CONTROL UNIT PPT/R, PART # 01.06.066 Problem Possible Causes Possible Solutions No air to the control unit Air is shut off· ·Connect the air supply to the pump (40-100 psi)· The 6mm tubing is not connected Connect the 6mm tubing to the mani- fold of the pump and the 6mm connec- tion on the control unit·...
  • Page 43 VACUUM CONVEYORS FUNCTIONS OF THE CONTROL UNIT A Adjustable time for conveying B Adjustable time for emptying of conveyor C Regulator for opening of valve...
  • Page 44 VACUUM CONVEYORS PNEUMATIC DIAGRAM COMPONENT LAYOUT...
  • Page 45 VACUUM CONVEYORS TIME SIGNAL DIAGRAM MOUNTING...
  • Page 46 (filtration grade 5 micron) compressed air according to ISO standard 8573.1, quality class 3. We recommend that PIAB’s regulator kit should always be used in order to ensure proper function. Use the 1/2" regulator kit for 100–400 pumps (Art. No. 01 04 490) or regulator kit 1"...
  • Page 47 PPT /R does not require routine maintenance. However in a dusty, dirty environment, the timers will need to be re-lubricated. Please do not wash or spray the timers with water. The timers may be sent back and PIAB can re-lubricate them, or the following instructions can be followed.
  • Page 48 VACUUM CONVEYORS TROUBLESHOOTING GUIDE: CONTROL UNIT VCC-EP, PART # 34.07.016 Problem Possible Causes Possible Solutions No air to the control unit ·Air is shut off· ·Connect the air supply to the pump (40-100 psi)· The 6mm tubing is not connected Connect the 6mm tubing to the mani- fold of the pump and the 6mm connec- tion on the control unit·...
  • Page 49 (filtration grade 5 micron) compressed air according to ISO standard 8573.1, quality class 3. We recommend that PIAB’s regulator kit should always be used in order to ensure proper function. Use the 1/2" regulator kit for 100–400 pumps (Art. No. 01 04 490) or regulator kit 1"...
  • Page 50 VACUUM CONVEYORS VALVE CONNECTIONS FOR THE VCC-EP...

  • Page 51: A Level Detector

    #8 is 30 - 40 Push tubing into each respective fitting checking to make sure there is no air leaking from each fitting Call PIAB, 1-800-321-7422 to arrange repair or replacement TROUBLESHOOTING GUIDE: INJECTION UNITS, PART # 34.04.019 - 34.04.023 Problem...
  • Page 52 VACUUM CONVEYORS LEVEL DETECTOR Function: The PIAB level detector is used together with the PIAB control unit, CU, to stop the conveyor when the detector is activated. Model Art. No. Feed pressure Voltage VDC Housing Degree of Weight Operating temperature...

  • Page 53: Pneumatic Injection Valve

    VACUUM CONVEYORS PNEUMATIC INJECTION VALVE...

  • Page 54: Cleaning Out A Packed Conveyor

    VACUUM CONVEYORS CLEANING OUT A PACKED CONVEYOR There are many reasons why a conveyor can get overly full of material. Most of the reasons have been noted above. The important factor is how to clean the conveyor out. The easiest way to take apart the conveyor is to remove clamps and remove the pump and filter assembly.

  • Page 55: Maintenance Schedule

    VACUUM CONVEYORS MAINTENANCE SCHEDULE Date of start of new installation ........Pressure drop at idling Time interval Each Every second Every sixth According to Daily at date of start Check/messure month month month experience ..... -kPa (-in Hg) Date of filter change or filter washing 1 Check of feed pressure 2 Check of sealing,...
  • Page 56 FDA CFR 21 § 177.2600 ”Rubber arti- cles intended for repeated use”. WARRANTY PIAB gives a 5-year warranty for its conveyors and vacuum pumps. For accessories the guarantee is 1 year. The warranty does not apply to filters and other...
  • Page 57 VACUUM CONVEYORS NOTES...
  • Page 58 VACUUM CONVEYORS NOTES...
  • Page 59 VACUUM CONVEYORS NOTES...
  • Page 60 Tel 65-6368 2348 Fax 49-6031 718419 Fax 81-48 443 9179 Fax 46-8 630 26 90 Fax 65-6368 5948 info@piab.de info@piab.co.jp info@piab.se sales@piab.com.sg G R E AT B R I TAI N L AT I N A M E R I C A ( C O LO M B I A )

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C 200 seriesC 400 seriesC 600 seriesC 800 seriesC 1200 seriesC 1600 series ... Show all

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