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      FAQ

      FAQ – Frequently Asked Questions

      • Suction cups

        • How do I know which lifting forces I need?
          • It depends on the weight of the product that should be lifted and how many suction cups that can be used for the object. Calculate the weight to be lifted per suction cup and then take the weight multiplied with the gravity force (g=9.81) and you have the lifting force needed in pound force (lbf).

        • How do I know which suction cup to choose?
          • Our recommendation is to start at the application listing to find the products we recommend to different applications. If you have questions please do not hesitate to contact our partners to find the optimum solution.

        • How should Piab suction cups be stored?
          • All Piab suction cups should be stored in a closed container protected from light at a temperature range of 10-25 °C [50-77°F] for best performance and long storage life.

        • I have a variation of number of objects to be lifted- how can I make sure to not drop them or to use too much energy? How to optimize this type of system?
          • All suction cups not in contact with an object (open) will draw in a lot of air and demand a larger pump than actually necessary. By using different valves, such as piSAVE sense, in the suction cups, the suction cups will be normally closed until they come in contact with the handled object. Only the cups needed in the specific lifting cycle will be open and flow air. Please see the video piSAVE sense

        • What is DURAFLEX®?
          • DURAFLEX® is a patented material specially developed to feature the elasticity of rubber and the wear resistance of polyurethane. The DURAFLEX® material is mark-free.

      • Vacuum pumps

        • Does an ejector pump use more energy than a mechanical pump?
          • When the pumps are on,  the ejector pump actually uses more energy than the mechanical, however most vacuum applications are intermittent- suction and release- and the ejector pump can follow that cycle and be switched off and on easily along with the cycle which in total gives a much lower energy consumption compared to the mechanical pump that is on all the time.

        • Does Piab offer any warranty on vacuum pumps?
          • Piab offers a warranty to distributors, integrators and users of Piab products worldwide as per the following definitions:

            • A five-year warranty is valid for vacuum pumps excluding accessories and controls.
            • A one-year warranty is valid for other products if the failure has occurred within specified lifetime in terms of duty cycles.

            General warranty principles:

            • Piab guarantees against defects in the manufacture and materials by normal use in proper environment, when following the instructions for care, maintenance and control described in the appropriate Piab manual.
            • Piab replaces or repairs, free of charge, faulty products provided that these are returned to Piab, and found to be covered by the warranty.
            • It is at Piab's discretion whether a faulty product should be sent back to Piab for replacement or if the repair shall be made locally at Piab's expense.
            • This warranty does not include wear parts such as suction cups, filter elements, sealings, hoses, etc.
            • This warranty does not include subsequent damages caused by defective products.
        • How can I set the vacuum level when handling different objects which individually need different levels?
          • The multistage COAX® ejector is designed so the maximum vacuum level can be adjusted by the compressed air feed pressure. By using a piSAVE optimize, you can set the specific vacuum level needed and the piSAVE optimize will adjust the feed pressure to the pump accordingly. You will never use more compressed air than needed in the application. Please also try the piSAVE optimize calculator to see the actual energy saving by doing this.

        • How do I know which COAX® cartridge to use?
          • The easiest way is to use the selection guide in the pump section.  MICRO, MINI and MIDI describe size and capacity where MICRO is smallest and MIDI the largest.  Each are available in a few different characteristics, one for extra high flow (Si), one for extra high vacuum level (Xi), one for handling low of fluctuating compressed air feed-pressure (Bi/Pi) and finally an extra dirt tolerant design (Ti).

        • How do I service my pump?
          • Due to the design of the COAX® multistage ejector in the pump with no moving parts, there is virtually no maintenance.

        • I have an older Piab vacuum pump and need spare parts. How can they be identified?
          • First download the manual from the homepage and there you will find the part numbers of the different spare parts.  

        • What are the advantages with the multistage ejector compared to a single stage ejector?
          • A single stage ejector is designed for either high vacuum flow or high vacuum level. The multistage COAX® ejector has a combination of different nozzles providing both high flow and high vacuum level performance in the same ejector.  This design also gives lower energy consumption for equal performance

        • What are the port sizes on this pump? I am unfamiliar with these threads?
          • For the port sizes, go to the product and download the data sheet, that can be downloaded after registering. Specification on thread type is not provided on the webpage.

        • What is COAX®?
          • COAX® is an advanced solution for creating vacuum with compressed air. Based on Piab’s multistage technology, COAX® cartridges are smaller, more efficient and more reliable than conventional ejectors, which allow for the design of a flexible, modular and efficient vacuum system. A vacuum system based on COAX® technology can provide you with three times more vacuum flow than conventional systems, allowing you to increase speed with high reliability while reducing energy consumption.  COAX® cartridges exist in several sizes (MICRO, MINI & MIDI) and models (Bi, Pi, Si, Ti & Xi), making them suitable for every application. The technology ensures excellent performance at both low and high feed pressures. Pumps based on COAX® technology can operate within the feed pressure range of 25-87 psi.

        • When should I use integration of a vacuum cartridge in my system?
          • The most common problem in a vacuum system is that you have restrictions between the vacuum source and the point of suction, e.g. long narrow hoses. By integrating the vacuum cartridges in your system, you are then able to place the vacuum source close to the point where you need the vacuum.  You have minimized the restrictions and will minimize the energy consumption in your system. You will also have a more compact solution.

        • Which vacuum level should I use?
          • In lifting applications with suction cups do not use more vacuum than needed. We normally recommend 18-inHg. Too high of a vacuum level gives lower efficiency and you would use more energy that actually needed. 

        • Why should I choose a combined pump and gripper (VGS)?
          • The most common problem in a vacuum system is that you have restrictions between the vacuum source and the point of suction, e.g. long narrow hoses. By using the combined pump and gripper, the vacuum is generated at the suction cup. You have minimized the restrictions and will minimize the energy consumption in your system.

        • Why should I use an ejector pump instead of a mechanical pump?
          • The ejector technology has no moving parts thus with virtually no maintenance, it will provide higher reliability. It is also much smaller in size and weight that gives you the possibility to place it closer to the point of suction or where you actually need the vacuum.  The mechanical pump also has a much higher noise level and produces heat, meaning that normally you would need to have it in an insulated room. 

      • Vacuum conveyors – general

        • Can food and pharmaceutical products be transported through vacuum conveyors?
        • Can Piab vacuum conveyors be used to convey tablets, capsules etc.?
          • Yes. Piab has experience of conveying a large variety of tablets and capsules without damage.  Please contact us for detailed information.

        • Can the conveyor be used to dose material?
          • No it can’t. Normal procedure is to dose before or after conveying.  

        • Can you convey liquids?
          • No we can’t. It’s extremely difficult to control the amount of liquid coming in the conveyor.

        • Can you convey material vertically?
          • Yes, up to 25-30 feet without accessories/pipe emptying solution. With a pipe emptying solution, up to 80 feet.

        • Can you provide IQ/OQ documentation with a conveyor?
          • For piFLOW®p we can supply this documentation. It is a template that shall be filled in during start up and with the help of the manual that comes with the shipment. 

        • Do you use any electricity on the conveyors?
          • No, the conveyors use only compressed air. Even our control systems are pneumatic. 

        • Does Piab have any warranty on the unit?
          • Piab offers a warranty to distributors, integrators and users of Piab products worldwide as per the following definitions:

            • A five-year warranty is valid for complete vacuum conveyors excluding electro mechanical pumps and controls.
            • A five-year warranty is valid for vacuum pumps excluding electro mechanical pumps, accessories and controls.
            • A two-year warranty is valid for electro mechanical pumps.
            • A one-year warranty is valid for other products.

            General warranty principles:

            • Piab guarantees against defects in the manufacture and materials by normal use in a proper environment, when following the instructions for care, maintenance and control described in the appropriate Piab manual.
            • Piab replaces or repairs, free of charge, faulty products provided that these are returned to Piab and found to be covered by the warranty.
            • It is at Piab’s discretion whether a faulty product should be sent back to Piab for replacement or if the repair shall be made locally at Piab’s expense.
            • This warranty does not include wear parts such as filter elements, sealings, hoses, pipe fittings, pipe bends, pinch valves (in-line with conveyed material), reducers, etc.
            • This warranty does not include subsequent damages caused by defective products.
        • How do I troubleshoot?
          • In the manual for conveyors there is one section about troubleshooting. You are also welcome to contact the nearest Piab company.

        • How many feet is it possible to convey powder?
          • 0 – 160 feet if the conveying length does not include a vertical lift more than 16 feet and the product density is between 1.10-2.20 lb.

        • How to avoid the material segregation?
          • By having the right mix of air and conveyed product. This is achieved from where the Piab conveyor draws the material with the help of our feeding point accessories. Please also read our  white paper on segregation and contact any Piab company for further information.

        • Is the Piab conveyor made to stand overpressure?
          • No they are not, only for under pressure.

        • Is there a risk of dust explosion?
          • Not if instructions in the manual are followed. All Piab conveyors have a grounding point.  All our conveyors can be sent with ATEX dust approval. 

        • Please tell me how to disassemble the vacuum conveyor
        • Please tell me the approximate amount of powder transport
          • From about 550 lbs/hour to about 22,000 lbs/hour.

        • Please tell me the method of selecting the vacuum conveyor
        • What can go wrong with the unit?
          • With regular maintenance, the unit will do the job for years to come.

            If the compressed air is dirty/has fluid in it, the filter can be clogged as well as the ejectors and the timers.Water in the air line is not optimal.

            Consult the manual for troubleshooting if you would encounter anything unusual.

        • What is included in the delivery of the conveyor?
          • Conveyor, filter regulator (1” connection)

            Manual

            Troubleshooting guide

            Drawings

        • What is the material used for the body of the conveyors?
          • piFLOW®p is made of stainless steel  316L.

            piFLOW® i and f  are made of stainless steel 304.

        • What kind of certificate can you provide with your conveyors?
          • To a large number or Piab conveyors we can offer FDA, ATEX Dust and Gas, 2.2 certificates.

        • What type of accessories can Piab provide?
          • Stainless steel, aluminum, or PE, aspirated and non-aspirated feed wands

            Feed adapter with or without flange connection

            Feed station/hopper

            Flexible Hose

            Remote start/stop valve

            Level sensor

            Containers

            Transition from the unit to downstream equipment

        • What type of filter is available for this unit?
          • Pleated rod. Filtration grade 0,5µm. a hard rod filter in PE and PUR material with a PTFE membrane.  Comes in black and white version.

            Pleated, Filtration grade 0,5µm. A hard polyester and PUR filter with a PTFE membrane. Gray color.

            Textile. Filtration grade 5,0µm filterbag in polyester and a ePTFE membrane.  Light gray color.

        • What utilities do I need?
          • Compressed air with normal industry pressure of 58-87 psi.

        • When transporting granules, do the granules break or become damaged?
          • It depends on the physical properties of the granules. Piab has experience of conveying a large variety of granules, tablets and capsules without damage.  Please contact us for detailed information.

      • Vacuum conveyors – piFLOW®p

        • Are the filters FDA approved?
          • Yes, they are.

        • Can the filter be washed?
          • Depending on the filter type there are different recommendations. Please read the cleaning instructions in the corresponding manual for the vacuum conveyor.

        • Can the unit be controlled by a level sensor in the receiving hopper?
          • Yes it can, a level sensor including the electric/pneumatic valve will be integrated for it. 110VAC or 24VDC are available.

        • Does the unit come with any type of control?
          • The unit has a pneumatic control which controls the suction and discharge time as well for fluidization.

            It can also be without control, in that case the end user will need to provide the sequence of operation – PLC control.

            Electric/pneumatic valve unit can be provided ( to convert the electrical signal to a pneumatic output to signal the Piab)

        • Does the unit use metric tubing and hardware?
          • Yes, it is all metric tubing and hardware.

        • How does the unit work/operate?
          • Start the Piab control via a pneumatic ON/Off valve
            The vacuum pump starts and at the same time the bottom flap/door closes, the back pulse container (located inside the top part of the Conveyor) charges with compressed air (line pressure). The suction time begins (adjustable to 1-30 seconds via the pneumatic timer).
            When the suction time times out, the control goes into a discharge cycle (adjustable to 1-30 seconds), the vacuum pump will stop, the bottom flap/door opens and the back pulse will clean the filter. And after  that it will re-start until the unit is shut off
            Please also look at our video.
        • How much can the unit convey?
          • 220-22,000 lbs/hr, depending on the distance and the size of the conveyor/pump/filter and product to be conveyed.

        • How much compressed air does the unit consume?
          • piPREMIUM64 pump. 5.30-7.42 scfm

            piPREMIUM100 pump. 10.6-14.8 scfm

            piPREMIUM200 pump. 21.1-29.7 scfm

            piPREMIUM400 pump. 42.2-59.1 scfm

            piPREMIUM600 pump. 63.3-88.7 scfm

            piPREMIUM800 pump. 84.4-118.2 scfm

            piPREMIUM1200 pump, 127.1-178 scfm

            piPREMIUM1600 pump, 169.5-237.3 scfm

        • What are the benefits with the unit?
          • The air driven Piab vacuum pump maximizes energy efficiency by using COAX® technology

            Does not produce any heat

            Low maintenance because of few parts

            Efficient filtration (5 – 0.5 micron)

            Maximize productivity with quick-start operation

            Low noise level (72-76 dBA)

            Optimize available mounting space

            Increase conveying capacity with a large volume capability

        • What delivery time does Piab have on a unit?
          • We can deliver units in 4-6 weeks after receipt of order.

        • What is included in the delivery of the conveyor?
            • Conveyor
            • Manual
            • Troubleshooting guide
            • Drawings
        • What is the filtration for the filters?
            • Textile filter has a minimum particle size of 5 micron
            • Pleated and pleated rod filters have a particle size of 0.5micron
        • What is the surface finish?
          • < Ra 0.8µm

        • What is the unit made of?
            • The body is made of stainless steel 316L, polished inside and outside.
            • The vacuum pump is made of aluminum, stainless steel and plastic.
        • What materials are the filters made of?
            • The bag filter is made of ePTFE, polyester needle felt
            • The pleated filter is made of PTFE, reinforced polyester and PUR – polyurethane
            • The pleated rod filter made of PTFE, PE – sintered polyethylene 
        • What type of accessories can Piab provide?
            • Stainless steel, aluminum, or PE, aspirated and non-aspirated feed wands
            • Feed adapter with or without  flange connection
            • Feed station
            • Flexible vacuum hose
            • Remote start/stop valve
            • Level sensor
            • Containers
            • Transition pieces from the vacuum conveyor to recieving equipment
        • What type of filters are available for these units?
          • We have different ones for different needs:

            • Pleated rod. Filtration grade 0,5µm. A hard rod filter in PE and PUR material with a PTFE membrane. Comes in black and white version.
            • Pleated. Filtration grade 0,5µm. A hard polyester and PUR filter with a PTFE membrane. Gray color.
            • Textile. Filtration grade 5,0µm.  Filter bag in polyester and a ePTFE membrane. Light gray color.
        • What type of product can these conveyors transport?
          • They can convey products between fine powder to plastic granules and  from free flowing material to non-free flowing dry material.

      • Vacuum conveyors – piFLOW®i and piFLOW®f

        • Are the filters FDA approved?
          • Yes, they are.

        • Can the filter be washed?
          • Depending on the filter type there are different recommendations. Please read the cleaning instructions in the corresponding manual for the vacuum conveyor.

        • Can the unit be controlled by a level sensor in the receiving hopper?
          • Yes it can, a level sensor including the electric/pneumatic valve will be integrated for it. 110VAC or 24VDC are available.

        • Does the unit come with any type of control?
          • The unit has a pneumatic control which controls the suction and discharge time as well for fluidization.

            It can also be without control, in that case the end user will need to provide the sequence of operation – PLC control.

            Electric/pneumatic valve unit can be provided ( to convert the electrical signal to a pneumatic output to signal the Piab)

        • Does the unit use metric tubing and hardware?
          • Yes, it is all metric tubing and hardware.

        • How does the unit work/operate?
          • Start the Piab control via a pneumatic ON/Off valve
            The vacuum pump starts and at the same time the bottom flap/door closes, the back pulse container (located inside the top part of the Conveyor) charges with compressed air (line pressure). The suction time begins (adjustable to 1-30 seconds via the pneumatic timer).
            When the suction time times out, the control goes into a discharge cycle (adjustable to 1-30 seconds), the vacuum pump will stop, the bottom flap/door opens and the back pulse will clean the filter. And after  that it will re-start until the unit is shut off
            Please also look at our video.
        • How much can the unit convey?
          • 220-8,800 lbs/h, depending on the distance and the size of the conveyor/pump/filter and product to be conveyed.

        • How much compressed air does the unit consume?
            • piBASIC100 pump, 10.6-14.8 scfm 
            • piBASIC200 pump, 21.1-29.7 scfm
            • piBASIC400 pump, 42.2-59.1 scfm 
            • piBASIC600 pump, 63.3-88.7 scfm
        • What are the benefits with the unit?
          • The air driven Piab vacuum pump maximizes energy efficiency by using COAX® technology

            Does not produce any heat

            Low maintenance because of few parts

            Efficient filtration (5 – 0.5 micron)

            Maximize productivity with quick-start operation

            Low noise level (72-76 dBA)

            Optimize available mounting space

            Increase conveying capacity with a large volume capability

        • What delivery time does Piab have on a unit?
          • We can deliver units in 4-6 weeks after receipt of order.

        • What is included in the delivery of the conveyor?
            • Conveyor
            • Manual
            • Troubleshooting guide
            • Drawings
        • What is the filtration for the filters?
            • Textile filter has a minimum particle size of 5 micron
            • Pleated and pleated rod filters have a particle size of 0.5micron
        • What is the surface finish?
          • Ra 0.6 µm or better.

        • What is the unit made of?
            • The body is made of stainless steel 304L, pickled inside and outside
            • Vacuum pump is made of aluminum , stainless steel and plastic
        • What materials are the filters made of?
            • The bag filter is made of ePTFE, polyester needle felt
            • The pleated filter is made of PTFE, reinforced polyester and PUR – polyurethane
            • The pleated rod filter made of PTFE, PE – sintered polyethylene 
        • What type of accessories can Piab provide?
            • Stainless steel, aluminum, or PE, aspirated and non-aspirated feed wands
            • Feed adapter with or without  flange connection
            • Feed station
            • Flexible vacuum hose
            • Remote start/stop valve
            • Level sensor
            • Containers
            • Transition pieces from the vacuum conveyor to recieving equipment
        • What type of filters are available for these units?
          • We have different ones for different needs:

            • Pleated rod. Filtration grade 0,5µm. A hard rod filter in PE and PUR material with a PTFE membrane. Comes in black and white version.
            • Pleated. Filtration grade 0,5µm. A hard polyester and PUR filter with a PTFE membrane. Gray color.
            • Textile. Filtration grade 5,0µm.  Filter bag in polyester and a ePTFE membrane. Light gray color.
        • What type of product can these conveyors transport?
          • They can convey products between fine powder to plastic granules and  from free flowing material to non-free flowing dry material.

      • Value Line® general

        • Are there any free samples I can receive for evaluation?
        • Is the Value Line® product available with volume based discount?
          • Yes, suction cups are. ≥30 pcs 15%, ≥100 pcs 30%.

        • Is there any pricing information available?
        • What is the delivery time for Value Line® items?
          • 1 day (off the shelf delivery).

      • Value Line® suction cups

        • Are the cups also push-on style?
          • Yes.

        • Are the cups PVC free?
          • Yes.

        • Are the cups PWIS or silicone free?
          • No.

        • Are the cups suitable for food (FDA – EU)?
          • No.

        • Are there any corresponding fittings?
          • Yes, 12 different brass fittings G and NPT threads, male.

        • Do the cups come with filter?
          • No.

        • Is the suction cup material recyclable?
          • Yes.

        • What are the signs of a worn out cup?
          • Lip rising (flat cups) and stickiness (bellow cups) are clear signs of a worn out cup.

        • What cup designs are there?
          • Flat concave, 2-bellows and 5-bellows.

        • What cup sizes are there?
          • ø20, 25, 30, 40, 50, 60, 75mm.

        • What is the average cup life time?
          • 300,000 or more cycles, depending on surface, size and speed.

      • Value Line® ejectors

        • Are the Value Line® ejectors available with vacuum non-return (check) valve?
          • No.

        • Are there several designs or types?
          • Yes, the Value Line® ejectors come in three designs: "Inline", "T-design" and the "VL206 1/8" which is an aluminum body with 2 cartridges. The T-design is ideal when exhaust needs to be piped away, and the VL206 1/8" is ideal when a higher flow is needed.

        • Are Value Line® ejectors suitable in dusty environments, where a vacuum filter can't be used?
          • Yes, as no flap-valve is used both versions work well in dusty environments.

        • Can the Value Line ejectors be used in clean room environments?
          • Yes, the T-design is suitable for clean-room environments.

        • How is the vacuum performance compared to conventional Piab ejectors?
          • They do not reach as deep vacuum levels as Piab multi stage ejectors and initial flow is lower.

        • How is vacuum performance compared to single stage ejectors?
          • Better than conventional single-stage ejectors, up to 25-30% more efficient.

        • What is the ejector performance and capacity?
          • Ejectors reach vacuum level of 70 -kPa  / 21,0-inHg.

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