FAQ
I Want To Know the Surface Finish of the Wetted Parts of My System.
Kvick Lab system
Flow distribution manifold - Polished 316L stainless steel, Ra < 0.8 µm (31.5 µinch)
Back plate - Polished 316L stainless steel
Kvick Flow holder
Front and back plate RA < 0.6 µm (25 µinch)
Feed, retentate and permeate ports Ra < 0.5 µm (20 µinch)
Grand Stand
Fluid path Ra < 0.5 µm (20 µinch)
What Is the Hold Up volume (Void Volume) of My GrandStand System?
| Base system | GrandStand 450 | GrandStand 550 |
|---|---|---|
| System dead volume without tank or filter cartridge | 9.51 | 18.9 |
What Volumetric Flow Rate Can Be Delivered by the GrandStand System Pump?
| GrandStand 450 | GrandStand 550 | |
|---|---|---|
| Pump type | Rotary lobe | Rotary lobe |
| Max pump flow rate | 120 l/min at 30 psig | 400 l/min at 30 psig |
What Is the Working Volume of My GrandStand System?
The working volume of a GrandStand with hollow fiber cartridges installed equals:
System dead volume + cartridges void volume + hoses connected to the tank + minimum volume in the tank to prevent vortexing
The working volume of a GrandStand with Kvick cassettes installed equals:
System dead volume + cassette holder + cassettes void volume + hoses connected to the tank + minimum volume in the tank to prevent vortexing
| Base system | GrandStand 450 | GrandStand 550 |
|---|---|---|
| System dead volume without tank or filter cartridge | 9.51 | 18.9 |
Accessories
The use of a permeate flow control is strongly recommended during upstream clarification of target material. Permeate flow control rate is dependent on the process flux (LMH) and surface area.
For permeate flow control you need a permeate pump kit. Detailed information regarding permeate pump kit for GrandStand 450 (GSM450PERPRP) and for GrandStand 550 (GSM550PERPRP) is found below.
Permeate side connections are not included with the GrandStand system. Please attach only light weight plastic fittings to the permeate side. To prevent possible damage to the cartridge, do not attach stainless steel valves directly to the permeate port.
To blank off the permeate, feed and retentate ports of the cartridge, when stored off the system:
Blank off cap 50 mm TC in stainless steel incl. gasket (44-7135-01)
Blank off cap 50 mm TC in plastic (56-4109-90)
Clamp 50 mm TC in stainless steel (12-4100-30) or plastic (56-4106-68)
Gasket o.d. 50 mm i.d. 38 mm, 1.5 inch (12-4100-34)
Please note that the item numbers are not necessarily in sequential order.
When stored off the system, store the cartridge with storage solution using blank off cap, gasket and clamp for each port.
| # | Product Name | Product Code | Price | |
|---|---|---|---|---|
| 3 | Clamp 50 mm (1") TC | 12410030 | 15.52 USD |
Add to cart
|
| 3 | Clamp 50 mm TC | 56410668 | 78.66 USD |
Add to cart
|
| 3 | Clamp 50 mm (1.5") TC (Toggle Clamp) | 56410669 | 78.66 USD |
Add to cart
|
| 7 | TC-Gasket 51 mm i.d. 10 mm, EPDM | 18101288 | 205.00 USD |
Add to cart
|
| 7 | Blind Flange, 51 mm TC | 44713501 | 109.71 USD |
Add to cart
|
| 7 | 50 mm (1.5") TC Blank-Off Cap, polysulfone | 56410990 | 89.01 USD |
Add to cart
|
| 8 | 50 mm (1.5") TC 13 mm (0.5") Barb | 56410986 | 135.58 USD |
Add to cart
|
| 8 | 50 mm TC i.d. 38 mm (1.5") 19 mm (0.75"ch) Barb | 56410987 | 135.58 USD |
Add to cart
|
Scope of Supply for GrandStand 550 with one SIP1 and two SIP2 installed (this would be supplied by one GSMSIPSIP2KIT, code no 28-4004-44, plus one GSMSIP2KIT, code no 28-4004-45). Light Blue dashed lines: original basic system battery, Black and Green lines: original basic system components; Dark Blue lines: GSMSIPSIP2KIT and GSMSIP2KIT. Magenta lines: by customer. Element “F” at the top of the drawing refers to hydrophobic sterile vent filter assembly (not included).
The use of a permeate flow control is strongly recommended during upstream clarification of target material. Permeate flow control rate is dependent on the process flux (LMH) and surface area.
For permeate flow control you need a permeate pump kit. Detailed inforation regarding permeate pump kit for GrandStand 450 (GSM450PERPRP) and for GrandStand 550 (GSM550PERPRP) is available below.
Accessories for MSM cartridges that have to be ordered separately.
Housing for MaxCell MSM cartridges:
Housing assembly for 45 MSM cartridges with straight adaptors (56-4106-31)
Housing assembly for 65 MSM cartridges with straight adaptors (56-4106-32)
Housing assembly for 85 MSM cartridges with straight adaptors (56-4106-33)
To blank off permeate ports of the cartridge:
Blank off cap 50 mm TC incl gasket, stainless steel (44-7135-01)
Clamp 50 mm TC, stainless steel (12-4100-30)
To blank off the drain port of the cartridge, when stored off the system;
Blank off cap 25 mm TC incl gasket, stainless steel (18-1001-25)
Clamp 25 mm TC, stainless steel (12-4100-31)
To blank off the feed and retentate ports of the cartridge, when stored off the system:
Blank off cap 64 mm TC, plastic (56-4109-92)
Clamp 64 mm TC (12-4100-28)
Gasket 64 mm i.d. 51 mm, 2 inch (12-4100-33)
Please note that the item numbers are not necessarily in sequential order.
When stored off the system, store the cartridge with storage solution using blank off cap, gasket and clamp for each port.
| # | Product Name | Product Code | Price | |
|---|---|---|---|---|
| 3 | Clamp 50 mm (1") TC | 12410030 | 15.52 USD |
Add to cart
|
| 3 | Clamp 50 mm (1.5") TC (Toggle Clamp) | 56410669 | 78.66 USD |
Add to cart
|
| 6 | TC-Gasket 51 mm i.d. 10 mm, EPDM | 18101288 | 205.00 USD |
Add to cart
|
| 6 | Blind Flange, 51 mm TC | 44713501 | 109.71 USD |
Add to cart
|
| 10 | 4" TC Gasket, silicone | 11000527 | 181.12 USD |
Add to cart
|
| 10 | Housing Assembly for 45MSM Cartridges | 56410631 | 9,094.00 USD |
Add to cart
|
| 10 | Housing Assembly for 65MSM Cartridges | 56410632 | 10,100.00 USD |
Add to cart
|
| 10 | Housing Assembly for 85MSM Cartridges | 56410633 | 11,500.00 USD |
Add to cart
|
| 11 | Gasket 25 mm, i.d. 6 mm | 18001927 | 18.97 USD |
Add to cart
|
| 11 | Blind Flange, including gasket, 25 mm | 18100125 | 82.80 USD |
Add to cart
|
| 12 | Clamp 25 mm TC | 56410665 | 161.46 USD |
Add to cart
|
The use of a permeate flow control is strongly recommended during upstream clarification of target material. Permeate flow control rate is dependent on the process flux (LMH) and surface area.
For permeate flow control you need a permeate pump kit. For information regarding permeate pump kit for GrandStand 450 (GSM450PERPRP) and for GrandStand 550 (GSM550PERPRP) see below.
Accessories for STM cartridges that have to be ordered separately
Housing for STM cartridges:
Housing assembly for 35 STM cartridges (56-4106-27)
Housing assembly for 55 STM cartridges (56-4106-28)
Steaming-in-place connections:
Basic SIP system connection for a single cartridge (28-4004-44)
Permeate side inlet and outlet connections needed for each additional cartridge installed on GrandStand 550 (28-4004-45)
To blank off permeate ports of the cartridge:
Blank off cap 50 mm TC incl gasket, stainless steel (44-7135-01)
Clamp 50 mm TC, stainless steel (12-4100-30)
To blank off the drain port of the cartridge, when stored off the system:
Blank off cap 25 mm TC incl gasket, stainless steel (18-1001-25)
Clamp 25 mm TC, stainless steel (12-4100-31)
To blank off the feed and retentate ports of the cartridge, when stored off the system:
Blank off cap 50 mm TC incl gasket, stainless steel (44-7135-01)
Clamp 50 mm TC, stainless steel (12-4100-30)
Please note that the item numbers are not necessarily in sequential order.
When stored off the system, store the cartridge with storage solution using blank off cap, gasket and clamp for each port.
| # | Product Name | Product Code | Price | |
|---|---|---|---|---|
| 1 | Housing Assembly for 35STM Cartridges | 56410627 | 6,999.00 USD |
Add to cart
|
| 1 | Housing Assembly for 55STM Cartridges | 56410628 | 7,661.00 USD |
Add to cart
|
| 3 | Clamp 50 mm (1") TC | 12410030 | 15.52 USD |
Add to cart
|
| 3 | Clamp 50 mm (1.5") TC (Toggle Clamp) | 56410669 | 78.66 USD |
Add to cart
|
| 7 | TC-Gasket 51 mm i.d. 10 mm, EPDM | 18101288 | 205.00 USD |
Add to cart
|
| 7 | Blind Flange, 51 mm TC | 44713501 | 109.71 USD |
Add to cart
|
| 10 | Gasket 25 mm, i.d. 6 mm | 18001927 | 18.97 USD |
Add to cart
|
| 10 | Blind Flange, including gasket, 25 mm | 18100125 | 82.80 USD |
Add to cart
|
| 11 | Clamp 25 mm TC | 56410665 | 161.46 USD |
Add to cart
|
| 91 mm (3") TC-Gasket, silicone | 11000525 | 213.00 USD |
Add to cart
|
|
| Clamp 91 mm TC | 56410671 | 209.00 USD |
Add to cart
|
The use of a permeate flow control is strongly recommended during upstream clarification of target material. Permeate flow control rate is dependent on the process flux (LMH) and surface area.
For permeate flow control you need a permeate pump kit. For information regarding permeate pump kit for GrandStand 450 (GSM450PERPRP) and for GrandStand 550 (GSM550PERPRP) see below.
Accessories for MaxCell cartridges that have to be ordered separately:
Straight connector kit (56-4107-37)
Straight connector (RBMX-16PS-ST)
Two different wrench set available:
MaxCell standard wrench set (56-4107-39)
MaxCell wrench set with applied torque (56-4107-40)
Permeate side connections are not included with the GrandStand system. Please attach only light weight plastic fittings to the permeate side. To prevent possible damage to the cartridge, do not attach stainless steel valves directly to the permeate port.
To blank off the permeate ports of the cartridge:
Blank off cap 50 mm TC in stainless steel incl. gasket (44-7135-01)
Blank off cap 50 mm TC in plastic (56-4109-90)
Clamp 50 mm TC in stainless steel (12-4100-30) or plastic (56-4106-68)
Gasket o.d. 50 mm i.d. 38 mm, 1.5 inch (12-4100-34)
To blank off retentate and feed ports of cartridge, when stored off the system:
Blank off cap 64 mm TC, plastic (56-4109-92)
Clamp 64 mm TC (12-4100-28)
Gasket o.d. 64 mm i.d. 51 mm, 2 inch (12-4100-33)
Please note that the item numbers are not necessarily in sequential order.
When stored off the system, store the cartridge with storage solution using blank off cap, gasket and clamp for each port.
| # | Product Name | Product Code | Price | |
|---|---|---|---|---|
| 3 | Clamp 50 mm (1") TC | 12410030 | 15.52 USD |
Add to cart
|
| 3 | Clamp 50 mm TC | 56410668 | 78.66 USD |
Add to cart
|
| 3 | Clamp 50 mm (1.5") TC (Toggle Clamp) | 56410669 | 78.66 USD |
Add to cart
|
| 6 | TC-Gasket 51 mm i.d. 10 mm, EPDM | 18101288 | 205.00 USD |
Add to cart
|
| 6 | Blind Flange, 51 mm TC | 44713501 | 109.71 USD |
Add to cart
|
| 6 | 50 mm (1.5") TC Blank-Off Cap, polysulfone | 56410990 | 89.01 USD |
Add to cart
|
| 7 | 50 mm (1.5") TC 13 mm (0.5") Barb | 56410986 | 135.58 USD |
Add to cart
|
| 7 | 50 mm TC i.d. 38 mm (1.5") 19 mm (0.75"ch) Barb | 56410987 | 135.58 USD |
Add to cart
|
| 9 | MaxCell O-Ring Set | 56410692 | 76.83 USD |
Add to cart
|
| 9 | Straight connector for MaxCell cross flow cartridge | 56410726 | 140.42 USD |
Add to cart
|
| 9 | Straight Adapter Kit for MaxCell Cartridge | 56410737 | 342.00 USD |
Add to cart
|
| 9 | Elbow Adapter Kit for MaxCell Cartridge | 56410738 | 495.00 USD |
Add to cart
|
| Standard Wrench Set for MaxCell Cross Flow Cartridge | 56410739 | 520.00 USD |
Add to cart
|
|
| Wrench Set with Applied Torque for MaxCell Cross Flow Cartridge | 56410740 | 1,125.00 USD |
Add to cart
|
Accessories for running Kvick Flow cassettes that have to be ordered separately. Two Kvick Flow manual cassette holders are needed per adaptor kit.
| # | Product Name | Product Code | Price | |
|---|---|---|---|---|
| 1 | Kvick Flow Manual Cassette Holder | 11000667 | 15,100.00 USD |
Add to cart
|
| Clamp 50 mm (1") TC | 12410030 | 15.52 USD |
Add to cart
|
Modular kits enhance flexibility of GrandStand systems to meet the needs of process development and process manufacturing groups. These modules may be added to the base system for your specific application at time of original purchase; or when process requirements change, the modules can provide the necessary system upgrade without requiring purchase of a completely new system.
| # | Product Name | Product Code | Price | |
|---|---|---|---|---|
| Kvick Flow Manual Cassette Holder | 11000667 | 15,100.00 USD |
Add to cart
|
|
| Clamp 50 mm (1") TC | 12410030 | 15.52 USD |
Add to cart
|
The use of a permeate flow control is strongly recommended during upstream clarification of target material. Permeate flow control rate is dependent on the process flux (LMH) and surface area.
For permeate flow control you need a permeate pump kit. For information regarding permeate pump kit for GrandStand 450 (GSM450PERPRP) and for GrandStand 550 (GSM550PERPRP) see below.
Accessories for SMO cartridges that have to be ordered separately
Housing for SMO cartridges:
Housing assembly for 35 SMO cartridges (56-4106-29)
Housing assembly for 55 SMO cartridges (56-4106-30)
Steaming-in-place connections:
Basic SIP system connection for a single cartridge (GSMSIPSIP2KIT)
Permeate side inlet and outlet connections needed for each additional cartridge installed on GrandStand 550 (GSMSIP2KIT)
To blank off permeate ports of the cartridge:
Blank off cap 50 mm TC (stainless steel) incl. gasket (44-7135-01)
Clamp 50 mm TC, stainless steel (12-4100-30)
To blank off the drain port of the cartridge, when stored off the system:
Blank off cap 25 mm TC incl gasket, stainless steel (18-1001-25)
Clamp 25 mm TC, stainless steel (12-4100-31)
To blank off the feed and retentate ports of the cartridge, when stored off the system:
Blank off cap 50 mm TC incl gasket, stainless steel (44-7135-01)
Clamp 50 mm TC, stainless steel (12-4100-30)
Please note that the item numbers are not necessarily in sequential order.
When stored off the system, store the cartridge with storage solution using blank off cap, gasket and clamp for each port.
| # | Product Name | Product Code | Price | |
|---|---|---|---|---|
| 1 | Housing Assembly for 35SMO Cartridges | 56410629 | 7,178.00 USD |
Add to cart
|
| 1 | Housing Assembly for 55SMO Cartridges | 56410630 | 7,862.00 USD |
Add to cart
|
| 3 | Clamp 50 mm (1") TC | 12410030 | 15.52 USD |
Add to cart
|
| 3 | Clamp 50 mm TC | 56410668 | 78.66 USD |
Add to cart
|
| 3 | Clamp 50 mm (1.5") TC (Toggle Clamp) | 56410669 | 78.66 USD |
Add to cart
|
| 7 | TC-Gasket 51 mm i.d. 10 mm, EPDM | 18101288 | 205.00 USD |
Add to cart
|
| 7 | Blind Flange, 51 mm TC | 44713501 | 109.71 USD |
Add to cart
|
| 12 | Gasket 25 mm, i.d. 6 mm | 18001927 | 18.97 USD |
Add to cart
|
| 12 | Blind Flange, including gasket, 25 mm | 18100125 | 82.80 USD |
Add to cart
|
| 13 | Clamp 25 mm TC | 56410665 | 161.46 USD |
Add to cart
|
| Clamp 91 mm TC | 56410671 | 209.00 USD |
Add to cart
|
The use of a permeate flow control is strongly recommended during upstream clarification of target material. Permeate flow control rate is dependent on the process flux (LMH) and surface area.
For permeate flow control you need a permeate pump kit. Detailed information regarding permeate pump kit for GrandStand 450 (GSM450PERPRP) and for GrandStand 550 (GSM550PERPRP) available below.
Accessories for ProCell cartridges that have to be ordered separately.
Housing for ProCell cartridges:
Housing assembly for 152 M cartridges (56-4106-35)
Housing assembly for 154 M cartridges (56-4106-36)
To blank off the permeate port of the cartridge:
Blank off cap 50 mm TC (stainless steel) incl. gasket (44-7135-01)
Clamp 50 mm TC, stainless steel (12-4100-30)
To blank off retentate and feed ports of cartridge, when stored off the system:
Blank off cap 64 mm TC, plastic (56-4109-92)
Clamp 64 mm TC, stainless steel (12-4100-28)
Gasket o.d. 64 mm i.d. 51 mm, 2 inch (12-4100-33)
Please note that the item numbers are not necessarily in sequential order.
When stored off the system, store the cartridge with storage solution using blank off cap, gasket and clamp for each port.
| # | Product Name | Product Code | Price | |
|---|---|---|---|---|
| 1 | Housing Assembly for ProCell 152M Cartridges | 56410635 | 11,200.00 USD |
Add to cart
|
| 1 | Housing Assembly for ProCell 154M Cartridges | 56410636 | 11,600.00 USD |
Add to cart
|
| 3 | Clamp 50 mm (1") TC | 12410030 | 15.52 USD |
Add to cart
|
| 3 | Clamp 50 mm TC | 56410668 | 78.66 USD |
Add to cart
|
| 3 | Clamp 50 mm (1.5") TC (Toggle Clamp) | 56410669 | 78.66 USD |
Add to cart
|
| 6 | TC-Gasket 51 mm i.d. 10 mm, EPDM | 18101288 | 205.00 USD |
Add to cart
|
| 6 | Blind Flange, 51 mm TC | 44713501 | 109.71 USD |
Add to cart
|
| 7 | 50 mm (1.5") TC 13 mm (0.5") Barb | 56410986 | 135.58 USD |
Add to cart
|
| 7 | 50 mm TC i.d. 38 mm (1.5") 19 mm (0.75"ch) Barb | 56410987 | 135.58 USD |
Add to cart
|
| Clamp 6 inch | 56410674 | 642.00 USD |
Add to cart
|
Spare parts
The picture shows GrandStand 550 but GrandStand 450 is similar.
Screen gasket for GrandStand 450 (12-4100-38)
Screen gasket for GrandStand 550 (12-4100-39)
TC clamps and gaskets for the drain port, feed, retentate and permeate lines of your filter device:
To identify the size of clamps and gaskets needed for your hollow fiber cartridge or cassette holder, see the accessories sections Running cartridges or Running cassettes for your specific filter.
| # | Product Name | Product Code | Price | |
|---|---|---|---|---|
| 6 | Clamp 50 mm (1") TC | 12410030 | 15.52 USD |
Add to cart
|
Troubleshooting
Find solutions to product related issues. For unlisted issues please contact local Cytiva service representation.
Shaft seals leak
| Possible cause | Suggested remedy |
|---|---|
Loose drive collar on single mechanical seals |
Reset drive collars |
Pump has operated without seals coming in contact with liquid |
Replace worn seal parts according to instructions. |
Seals incompatible with used liquid |
Contact vendor for information regarding proper seals. |
Worn seals and O-rings |
Replace seals and/or O-rings according to instructions. |
Fluid supply inadequate for pump
| Possible cause | Suggested remedy |
|---|---|
Blockage or partial blockage of flow path |
Flush through to clean blockage. |
NPSHA * is too low (fluid supply inadequate) |
1. Increase suction pipe diameter or shorten suction pipe length. |
Pump runs too slow |
Increase speed |
Valve is closed |
Open valve |
Viscosity too high |
Check the viscosity of the liquid. Viscosity is a function of temperature. (Lower temperature gives higher viscosity.) Let low-temperature liquid reach operating temperature before starting the run. |
* Net Positive Suction Head Available The net positive suction head available is a function of the pump suction system. The Net Positive Suction Head is the absolute total suction head in feet. The NPSH available in a flooded suction system is: Atmospheric Pressure (-) Vapor Pressure (+) Liquid Height (-) Friction in the Suction Line. |
Change me |
No flow, but pump turns
| Possible cause | Suggested remedy |
|---|---|
Air trapped in pipe or pump |
1.Check all connections for leakage. |
Motor turning in wrong direction |
Reverse flow |
General advice for troubleshooting manual filtration systems
For Manual Filtration Systems (QuixStand, FlexStand, GrandStand, etc.), please check the following during troubleshooting:
Power supply is suitable for running system. Please ensure that mains power supply FlowTech LabTop Rotary Lobe Pumps (used in FlexStand, KvickLab and KvickFlow Systems) is unprotected power.
Do not allow any large hard particles to enter the fluid path, as this will seize (gall) the internal machined surfaces of the pump head. A 50-mesh screen (“y-strainer with removable screen basket) is recommended.
Flow to inlet of rotary lobe pumps is not blocked. Also ensure that there is a gravity head pressure or other means to deliver process fluid to the pump head, as these rotary lobe pumps do not have suction lift capability.
Tank outlet valve is open and the recirculation loop is not blocked. Also check that the flow diameter is not restricted or becomes more narrow than that of the flow diameter at the inlet side of the pump. Finally make sure that the flow rates required can be delivered by the diameter of tubing or pipe used in the systems
Samples volume and system working volume have been used in calculations of concentration factor and diafiltration beforehand
Process settings of Membrane Capacity, Flux, Shear (or volumetric cross flow rate) have been properly applied for both sample characteristics and membrane pore size or NMWC designation.
For peristaltic pump-driven systems make sure the correct tubing sizes and polymers match the manufacturer’s required specifications for that pump head.
Make sure that peristaltic tubing is replaced regularly to avoid excessive wear or tubing failure.
Capacity too low, but pump turns
| Possible cause | Suggested remedy |
|---|---|
Pump runs too slow |
Increase speed |
NPSHA * is too low (fluid supply inadequate) |
1. Increase suction pipe diameter or shorten suction pipe length. |
Increased slip in pump |
Check rotor clearances; replace worn parts according to instructions |
Front cover not tight |
Tighten cover nuts according to instructions |
Discharge pressure higher than expected |
1. Check that the valves are open. |
* Net Positive Suction Head Available The net positive suction head available is a function of the pump suction system. The Net Positive Suction Head is the absolute total suction head in feet. The NPSH available in a flooded suction system is: Atmospheric Pressure (-) Vapor Pressure (+) Liquid Height (-) Friction in the Suction Line. |
Change me |
Pump is noisy
| Possible cause | Suggested remedy |
|---|---|
Air bubbles in liquid |
1. Check pump shaft seal for leakage |
Cavitating - Blockage or partial blockage of flow path on the suction side |
1. Check that valve is open |
Cavitating - Liquid temperature too high |
1. Reduce speed |
Cavitating - NPSHA* too low |
1. Increase suction pipe diameter or shorten suction pipe length |
Cavitating - Speed is too high |
Decrease speed |
Cavitating - Suction hose has collapsed |
Change hose. |
Cavitating - Viscosity higher than expected |
1. Decrease speed |
Discharge pressure is too high |
1. Check that the valves are open. |
* Net Positive Suction Head Available The net positive suction head available is a function of the pump suction system. The Net Positive Suction Head is the absolute total suction head in feet. The NPSH available in a flooded suction system is: Atmospheric Pressure (-) Vapor Pressure (+) Liquid Height (-) Friction in the Suction Line. |
Change me |
Rotors gall, pump seizes
| Possible cause | Suggested remedy |
|---|---|
Bearings worn |
Replace bearings according to instructions |
Discharge pressure is too high |
1. Check that the valves are not closed |
Foreign particles in pump |
1. Check for particles according to instructions. |
Gears worn |
Replace gears according to instructions |
Liquid temperature too high |
1. Lower temperature |
Loose rotor bolts/housing studs |
Tighten or replace if necessary according to instructions |
Particles in product too high |
1. Increase rotor clearance |
Rotor clearances incorrect |
Adjust to clearances recommended in instructions |
Motor is overheated
| Possible cause | Suggested remedy |
|---|---|
Discharge pressure is too high |
1. Check that the valves are open |
Motor and pump misalignment |
Correct alignment according to instructions. |
Motor capacity is too low |
Increase motor capacity |
Viscosity higher than expected |
1. Decrease pump speed |