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Clickable index
Declaration of conformity
 | When this pump unit is used as a stand-alone pump it complies with: Machinery Directive 98/37/EC EN60204-1, Low Voltage Directive 73/23/EEC EN61010-1, EMC Directive 89/336/EEC, EN50081-1/EN50082-1. |
Declaration of incorporation
When this pump unit is to be installed into a machine or is to be assembled with other machines for installations, it must not be put into service until the relevant machinery has been declared in conformity with the Machinery Directive 98/37/EC EN60204-1.
Responsible person: Christopher Gadsden, Managing Director, Watson-Marlow Limited, Falmouth, Cornwall TR11 4RU, England. Telephone +44 (0) 1326 370370 Fax +44 (0) 1326 376009.
Two-year warranty
Watson-Marlow Limited warrants, subject to the conditions below, through either Watson-Marlow Limited, its subsidiaries, or its authorised distributors, to repair or replace free of charge, including labour, any part of this product which fails within two years of delivery of the product to the end user. Such failure must have occurred because of defect in material or workmanship and not as a result of operation of the product other than in accordance with the instructions given in this manual.
Conditions of and specific exceptions to the above warranty are
- Consumable items such as tubing and rollers are excluded.
- Products must be returned by pre-arrangement carriage paid to Watson-Marlow Limited, its subsidiaries, or its authorised distributor.
- All repairs or modifications must have been made by Watson-Marlow Limited, its subsidiaries, or its authorised distributors or with the express permission of Watson-Marlow Limited, its subsidiaries, or its authorised distributors.
- Products which have been abused, misused, or subjected to malicious or accidental damage or electrical surge are excluded.
Warranties purporting to be on behalf of Watson-Marlow Limited made by any person, including representatives of Watson-Marlow Limited, its subsidiaries, or its distributors, which do not accord with the terms of this warranty shall not be binding upon Watson-Marlow Limited unless expressly approved in writing by a Director or Manager of Watson-Marlow Limited.
Information for returning pumps
Equipment which has been contaminated with, or exposed to, body fluids, toxic chemicals or any other substance hazardous to health must be decontaminated before it is returned to Watson-Marlow or its distributor. A certificate included at the rear of these operating instructions, or signed statement, must be attached to the outside of the shipping carton. This certificate is required even if the pump is unused. If the pump has been used, the fluids that have been in contact with the pump and the cleaning procedure must be specified along with a statement that the equipment has been decontaminated.
Safety
In the interests of safety, this pump and the tubing selected should only be used by competent, suitably trained personnel after they have read and understood this manual, and considered any hazard involved.
Any person who is involved in the installation or maintenance of this equipment should be fully competent to carry out the work. In the UK this person should also be familiar with the Health and Safety at Work Act 1974.
 | This symbol, used on the pump and in this manual, means: Caution, risk of electric shock. |
 | This symbol, used on the pump and in this manual, means: Caution, refer to accompanying documents. |
 | This symbol, used on the pump and in this manual, means: Do not allow fingers to contact moving parts. |
Recommended operating procedures
DO keep delivery and suction lines as short as possible using a minimum number of swept bends.
DO use suction and delivery pipelines with a bore equal to or larger than the bore of the tube fitted in the pumphead. When pumping viscous fluids, the losses caused by increased friction can be overcome by using pipe runs with a cross sectional area several times greater than the pumping element.
DO fit an extra length of pump tube in the system to enable tube transfer. This will extend tube life and minimise the downtime of the pumping circuit.
DO keep the track and rollers clean.
The self-priming nature of peristaltic pumps means valves are not required. Any valves fitted must cause no restriction to flow in the pumping circuit.
When using Marprene tubing, after the first 30 minutes of running, re-tension the tube in the pumphead. Open the guard, hold the tubing at one port whilst pulling the tube tight through the second port. This is to counteract the normal stretching that occurs with Marprene which can go unnoticed and result in poor tube life.
Tube selection The chemical compatibility list published in the Watson-Marlow catalogue is only a guide. If in doubt about the compatibility of a tube material and the duty fluid, request a tube sample card for immersion trials.
Installation
The 623S/R is suitable for single phase mains electricity supplies only.
- To ensure correct lubrication of the gearbox the pump should be run only while its feet are standing on a horizontal surface. The pump should be positioned to allow a free flow of air around it.
- Set the voltage selector to either 120V for 100-120V 50/60Hz supplies or 240V for 220-240V 50/60Hz supplies.
A mains cable fitted with a moulded plug is supplied with the pump. The wires are colour coded in accordance with the following code:
- 220-240V: Live- Brown; Neutral - Blue; Earth - Green/Yellow.
- 100-120V: Live - Black; Neutral - White; Earth - Green/Yellow.
Troubleshooting
Should the pump fail to operate, make the following checks to determine whether or not servicing is required.
- Check that the power switch is on.
- Check the mains supply is available at the pump.
- Check the voltage selector switch is in the correct position.
- Check the fuse in the mains socket.
- Check that the pump is not stalled by incorrect fitting of tubing.
Manual operation
- Start up Direction Start the pump by turning the Forward/Off/Reverse switch to the required direction of rotation. The preferred direction of rotation is clockwise (with fluid entering at the bottom of the pumphead), which will ensure the longest possible tube life. To operate against higher pressures use anticlockwise rotation.
- Speed control The 623S/R has a speed control of 20:1 giving a maximum and minimum speed of 165rpm and 8rpm. Speed control is given through a locking knob and indicated in rpm via the digital display.
- Stop Stop the pump by turning the Forward/Off/Reverse switch to its central Off position. To change the direction of flow, turn the Forward/Off/Reverse switch to its central Off position until the pumphead rotor stops, and then turn it to the required direction of rotation.
Care and maintenance
The only scheduled maintenance required for the 623S/R is inspection of the motor brushes and their replacement before their length is less than 6mm. The life of the brushes will depend on the duty of the pump, but is expected to be a minimum of 3,000 hours at maximum speed.
If the pump requires cleaning, use a mild solution of detergent in water after removing the pumphead. Do not use strong solvents.
For gearbox rebuilds, use Lubriplate GR-132 (Bodine reference LG-23) only. This is a lithium combination type thickener, NL GI No.1 grade, non-corrosive extreme pressure lubricant. This product is water resistant and resistant to a large degree to most other contaminants.
Specification
Maximum rotor speed | 165 rpm |
Power supply | 100-120/220-240V /1/ 50/60Hz |
Control range | 20:1 |
Power consumption | 250 VA |
Fuse rating | Type T (anti-surge) 5A |
Operating temperature range | 5C to 40C |
Storage temperature range | -40C to 70C |
Weight | 16kg (65lbs) |
Noise | <70dBA at 1m |
Standards | EN60529 (IP31) |
| Machinery directive 98/37/EC EN60204-1 |
| Low voltage directive 73/23/EEC EN61010-1 |
| EMC directive 89/336/EEC EN50081-1/EN50082-1 |
Specific drive performance details such as loaded drive speed variation against mains supply voltage fluctuation and drive stability from a cold start to normal operating temperature are available on request. For further information please contact Watson-Marlow Technical Support Department.
Drive spares
Number | Spare | Description |
1 | MRA0177A | Tachometer pcb |
2 | BM0015 | Motor brush |
3 | MRA0268A | Interlock reed switch |
4 | MRA0015A | Speed control pcb |
5 | MG0605 | Motor/gearbox - 165 rpm |
6 | MR2087H | Interlock cable |
7 | MN0787M | Tachometer disc |
8 | SW0086 | Voltage selector switch |
9 | US0045 | Mains connector |
10 | FS0043 | Fuse T type 5.0 amp |
11 | MD0924T, FN0300, FN0360, MR0716S | Locking knob |
12 | SD0058 | Digital display |
13 | MRA0261A | Display/guard pcb |
14 | MR0769B | Potentiometer |
15 | SW0141 | Forward / off / reverse switch |
16 | TF0048 | Toroidal transformer |
17 | MR2091H | Wiring harness |
| OG0024 | Gearbox lubricant |
620R Key safety information
 | Before opening the pumphead guard please ensure that the following safety directions are followed.
|
- For close-coupled drives, ensure that the pump is isolated from mains voltage.
- Ensure that there is no pressure in the pipeline.
- If a tube failure has occurred, ensure that any product in the pumphead has been allowed to drain through the controlled waste to a suitable drain.
- Ensure that protective clothing and eye protection are worn if hazardous products are being pumped.
620R Safe-guarding
- Primary safety on 620 series pumps is provided by the tool-lockable pumphead guard. On electrically-powered cased 600 series pumps, secondary (backup) protection is provided in the form of an electrical interlock which stops the pump if the pumphead guard is opened (and only for so long as the guard is opened). The electrical interlock on cased pumps should never be used as primary protection. Always disconnect the mains power supply to the pump before opening the pumphead guard.
- Only primary protection through the tool-lockable guard is provided on pneumatically powered 620 series cased pumps. Only primary protection through the tool lockable pumphead guard is provided on 620 series pumps fitted with industrial AC motors, but an interface kit to allow mains power to be switched by the pumphead guard interlock is available as an extra-cost option.
620R Pumping conditions
Pressure and viscosity
- All pressure values in this operating instruction, from which performance and life figures have been calculated, relate to peak pipeline pressures.
- Although rated to 4 bar working pressure, this pump will generate in excess of 4 bar working pressure if pipeline restrictions are in place. In instances where it is critical that a working pressure of 4 bar is not exceeded, pressure relief valves should be installed in the pipeline.
- For pumping duties of 2-4 bar pressure, only close-coupled pumps should be used, fitted with 73 Shore hardness Marprene/Bioprene or standard STA-PURE tube elements. "M" in the tube element’s product order code denotes suitability for high pressure use.
- When pumping duties of 0-2 bar pressure, use close-coupled or cased pumps fitted with 64 Shore hardness elements or the standard range of continuous peristaltic pump tubing.
- Viscosity handling is maximised by using 73 Shore hardness Marprene/Bioprene or STA-PURE tube elements in the pumphead.
- Ensure that there is always a minimum of one metre of smooth bore flexible tubing connected to the discharge port of the pumphead. This will help minimise any impulse losses and pulsation in the pipeline. This is especially important with viscous fluids and rigid pipework.
620R Pump installation
A correctly engineered installation will promote the best possible tube life, so please ensure that the following guidelines are followed:
- Avoid tight pipeline bends, pipe reducers and excessive lengths of smaller bore tubing than that in the pumphead, particularly in pipelines on the suction side.
- Ensure that connecting pipe work and fittings are suitably rated to handle the predicted pipeline pressure.
- If rigid pipe work comes in close proximity to the pumphead, a drop out section of pipe work will simplify tube replacement.
- Ensure that the controlled waste blanking plug is in position if the controlled waste port is not in use. See below.
- It is advisable to use controlled waste pipe work if pumping hazardous, aggressive or abrasive fluids or products which will harden in contact with air.
- When connecting waste pipe work to the controlled waste port using the coupling adaptor supplied, ensure that there is adequate clearance underneath the pumphead. Waste pipe work should run to a suitable container or drain.
- The leak detector installation procedure is included in the leak detector kit.
- If unsure of an installation please contact your local Watson-Marlow Technical Support Office for further assistance.
620R General operation
Opening the pumphead guard
- Unlock the guard with a 5mm Allen key or a screwdriver.
- Open the guard to its full extent. This creates the maximum clearance between the tube ports and guard to remove the tubing.
Engaging/disengaging the rollers
- The extent of travel of the roller release levers is indicated below. Do not try and force the levers beyond their normal extent of travel as this will damage the rotor.
- To engage the rollers snap the roller release levers counter clockwise making sure that the rollers lock out against the tubing. To disengage the rollers, snap the release levers clockwise to their disengaged position. For high pressure tubing elements or four roller pumpheads, the 5mm Allen key can be used to aid leverage when engaging/disengaging the rollers with the release levers.
| Make sure that fingers are clear of the front face of the rotor hub when using the roller release levers.
|
Pre-load checks
- Before loading tubing, ensure that all rollers rotate freely, that the tube ports and location grooves are clean and that if in use, the controlled waste pipe work is free of any obstructions.
Closing the pumphead guard and start-up
- Ensure that the guard seal is clean, replacing it if necessary.
- Ensure that the rollers are engaged and locked out against the tubing
- Close the guard and push it against the track until the latch engages.
- Connect suitable pipe work to the pumphead using the appropriate connectors for the tube element.
Continuous tubing clamp location in 620R pumpheads
- Select the appropriate tube clamp set for the tubing size to be used.
- Locate the two "U"-shaped track clamp halves into the pumphead ports (The "U"- shape ensures correct loading)
- Locate the corresponding guard clamp halves which have raised "T" locating sections, into the slots on the inner guard face above and below the guard hinge. Push and slide into their locked position.
- Closing the guard will align the two halves of the clamp around the tubing.
620R Continuous tube loading
- 620R continuous tubing pumpheads are factory set to accept Watson-Marlow 600 series 3.2mm wall tubing. Pumping performance will be adversely affected if Watson-Marlow tubing is not used.
- Select the tube clamp set which is correct for the tubing size to be used.
- Disengage rollers
- Locate one end of the tubing into the lower port "U" clamp and hold firmly in position.
- Wrap the tubing tightly around the retracted rollers, making sure that there is no twisting through its length.
- Locate the other end of the tubing into the upper port "U" clamp.
- Hold both ends of the tubing in one hand maintaining tension around the retracted rollers.
- Engage rollers
- Close the guard and push it against the track until the latch engages
- Ensure that continuous tubing is not loosely clamped at the pumphead ports.
- Ensure that when the pump is re-started all of the rollers have re-engaged. A roller which has not re-engaged will "click" continuously. No damage will occur if this happens but the roller should be re-engaged manually using the 5mm Allen key. Please refer to the Troubleshooting section.
Continuous tube loading
620R Continuous tube removal
- Unlock the guard and disengage the rollers.
- Disconnect the tubing from the external pipeline.
- Remove the tubing from the pumphead.
620R Maintenance
Scheduled maintenance
- The stainless steel pumping rollers run on sealed bearings and do not require lubrication.
- Remove the rotor and lubricate the follower rollers and roller engaging mechanisms with a lithium-based grease. This should be carried out every six months for intermittent duties and every three months for 24 hour duties.
- If fluid is spilled inside the pumphead, flush the pumphead out with water and mild detergent as soon as possible. If specific cleaning agents are required to clean the spillage, please consult Watson-Marlow Technical Support Office before proceeding, in order to confirm chemical compatibility.
- If the rotor needs to be removed, refer to the guidelines below.
Roller adjustment
620 pumpheads have provision for adjustment to reset the roller/track gap to compensate for wear after extended service in arduous applications.
Roller/track gaps can only be accurately judged without tubing in the pumphead. The gap should be 4.6mm for 3.2mm wall tubing and 5.5mm for LoadSure elements.
If the gap is more than 0.2mm greater than these dimensions, the following may be carried out:
- Note the number on the roller arm to which the engraved line on the hexagon-headed main roller pin corresponds.
- Remove the circlip (snap-ring) and roller pin.
- Relocate the main roller pin, resetting the engraved line to one number lower. For example, if the engraved line was at "-1", reset it to "-2" to reduce the roller track gap.
- Ensure the roller pin is correctly seated into the roller arm thrust washer. Replace the circlip.
Rotor removal and re-location
- Remove the rotor cover and central locating bolt using a 5mm Allen key. Pull the rotor off the keyed shaft, remove the key and clean thoroughly. Do not use tools to lever the rear face of the rotor away from the inner face of the track, it should come off by hand.
- To replace the rotor, locate the key into the keyway and apply a thin layer of grease over the shaft and key. Align the keyway of the rotor to the shaft key and slide the rotor into position, ensuring that a positive "stop" is achieved and ensure that the full length of the drive shaft is fitted into the rotor.
- Do not force the rotor into position. The rotor will slide into place easily if correctly aligned.
- Tighten the hexagonal locating bolt to a nominal torque of 10Nm using a 5mm Allen key.
- The rotor bolt, which is impregnated with "Loctite 218" thread lock, should be subjected to a maximum of three removals/relocations before renewal. To avoid rotor bolt renewal after three removals, apply "Loctite 222" thread lock to the rotor thread before relocation. This is critical to ensure prolonged, secure location of the rotor hub to the drive shaft. Failure to complete this action will invalidate the terms and conditions of the pumphead warranty.
- Replace the rotor cover.
When closing the guard, check it does not make contact with the rotor. If it does, then the rotor has been fitted incorrectly. Re-open the guard, remove and refit the rotor, and close the guard.
Track removal (close coupled AC motor gearboxes)
- Remove the rotor.
- Disconnect the controlled waste pipework if attached.
- Loosen the four track retaining screws using a Number 2 Pozi-Driv screwdriver.
- Disconnect the mains interlock if connected to a mains contactor
- Withdraw the track fully from the gearbox.
Track re-location (close coupled AC motor gearboxes)
- Ensure that the track is clean.
- Fit the track over the gearbox boss.
- Align the track horizontally so that the location holes are aligned with the threaded gearbox holes.
- Tighten the four track retaining screws using a Number 2 Pozi-Driv screwdriver.
- Re-connect the guard interlock controlled waste pipework if required.
620R CIP and SIP
General
- Unlock the guard and disengage the rollers within the tube zone.
- Close the guard and squeeze against the track until the latch clicks.
- Observe a 1m safety area.
CIP
- LoadSure tube elements and continuous tubing can be cleaned using CIP processes.
- Ensure that the tubuing material is chemically compatible with the cleaning agent that is to be used.
- If cleaning agents are spilled over the pumphead, wash down immediately.
- Ensure that controlled waste pipework is fitted to allow a safe release of cleaning agent in the event of a tube failure.
SIP
- Only STA-PURE tube elements can be used in a steam in place sterilisation processes.
- STA-PURE tubing elements can be sterilised to 3A Class two and FDA minimum recommended standard which is 121C (250F) at 1bar (14.5 psi) saturated steam for 20 minutes.
- Monitor the process continuously .
- If a tube failure occurs, shut down the process. Do not touch the pumphead until a 20 minute cooling period has been observed.
- Ensure a 20 minute acclimatisation period is observed before running the pump following SIP.
- Ensure that controlled waste pipework is fitted to allow a safe release of steam in the event of a tube failure..
- Ensure a 1m safety zone is maintained around the pumphead during SIP cycles.
| Ensure that the pumphead door is closed and locked before SIP cleaning commences.
|
Pumphead spares
Number | Spare | Description |
1 |
| Tube clamp pack: p/n 069.4101.000 |
2 | MR2052C | Oddie fastener |
2 | MR2053B | Clip: Oddie retainer |
| 2 | MR2054T | Oddie washer |
| 2 | SG0021 | Oddie spring |
| 2 | CX0150 | Oddie circlip (snap ring) |
3 | MRA0251A | Track assembly (continuous pumphead) - includes guard |
| 3 | MRA0297A | Track assembly (element pumphead) - includes guard |
| 3 | MR2000C | Track |
4 | MRA0249A | Roller assembly element pumphead |
4 | MRA0250A | Roller assembly continuous pumphead |
5 | MR2027T | Controlled waste threaded fitting 620R |
6 | MR2028M | Controlled waste port blanking plug |
7 | MR2018T | Hinge pin |
8 | MR2055M | Rotor cover |
| 9 | MR2021B | Seal - guard |
10 | MR2002M | Guard without latch and seal |
11 | MR2015T | Follower roller spindle |
12 | CX0148 | Roller assembly circlip (snap-ring) E type 6 dia |
12 | MR2014T | Stainless steel roller spindle |
12 | MR2010T | Thrust washer |
13 | MR2096T | Controlled waste threaded fitting locking nut |
14 | MRA0320A | Rotor assembly 2-roller element |
| 14 | MRA0321A | Rotor assembly 4-roller element |
| 14 | MRA0322A | Rotor assembly 2-roller continuous |
| 15 | MR2058B | Grommet - door switch |
| 16 | XX0220 | Key - metal |
17 | MR2029T | Cased drive MG605 shaft/rotor hub spacer |
18 | MR2059T | Adaptor - Bodine (white polypropylene ring) |
19 | FN0488 | Cased drive track locating screw M6x10 locating bolt |
20 | FN0523 | Close-coupled track locating screw M6x20 locating bolt |
21 | FN0581 | Rotor locating washer M6 |
| 22 | FN0520 | Rotor locating bolt M6 x 25 |
23 | TT0006 | 5mm Allen key |
| 24 | MA0017 | Guard magnet |
| CN0187 | Plug blanking 10.72M |
| MRA0268A | Cased drive door switch assembly |
| MRA0279A | Close-coupled door switch assembly |
Technical data
Performance envelope of the 620R, 620RE and 620RE4 mark II rotor
Flow rates
Tube bore | Tube number - # | rpm | Pressure (+) | Suction (-) |
| 
| 
| 
| 
|
Note: Flow rates quoted have been rounded for simplicity, but are accurate to within 5% - well within the normal tubing tolerance variation of flow rate. They should therefore be taken as a guide. Real flow rates in any application must be determined empirically.
620R
| Flow rates: Marprene, Bioprene |
 | mm | 6.4 | 9.6 | 12.7 | 15.9 |
inch | 1/4 | 3/8 | 1/2 | 5/8 |
 | # | 26 | 73 | 82 | 184 |
 | 8-165 (l/min) | 0.10
- 2.1 | 0.20 - 4.1 | 0.32 - 6.6 | 0.42
- 8.6 |
8-165 (USGPM) | 0.03 - 0.6 | 0.05
- 1.1 | 0.08 - 1.7 | 0.11 - 2.3 |
| Flow rates: Silicone |
| mm | 6.4 | 9.6 | 12.7 | 15.9 |
inch | 1/4 | 3/8 | 1/2 | 5/8 |
| # | 26 | 73 | 82 | 184 |
| 8-165 (l/min) | 0.10
- 2.0 | 0.22
- 4.5 | 0.34
- 6.9 | 0.44
- 11 |
8-165 (USGPM) | 0.03 - 0.5 | 0.06
- 1.2 | 0.09 - 1.8 | 0.12 - 3.0 |
| Flow rates: Neoprene, STA-PURE |
| mm | 6.4 | 9.6 | 12.7 | 15.9 |
inch | 1/4 | 3/8 | 1/2 | 5/8 |
| # | 26 | 73 | 82 | 184 |
| 8-165 (l/min) | 0.10
- 2.0 | 0.20 - 4.1 | 0.32 - 6.6 | 0.49
- 10 |
8-165 (USGPM) | 0.03 - 0.5 | 0.05
- 1.1 | 0.08 - 1.7 | 0.13 - 2.7 |
Dimensions in mm
620R product codes
 | | |
|
| mm | inch | # | Marprene | Bioprene | Peroxide
silicone | Platinum
silicone |
6.4 | 1/4 | 26 | 902.0064.032 | 903.0064.032 | 910.0064.032 | 913.0064.032 |
9.6 | 3/8 | 73 | 902.0096.032 | 903.0096.032 | 910.0096.032 | 913.0096.032 |
12.7 | 1/2 | 82 | 902.0127.032 | 903.0127.032 | 910.0127.032 | 913.0127.032 |
15.9 | 5/8 | 184 | 902.0159.032 | 903.0159.032 | 910.0159.032 | 913.0159.032 |
| | |
|
| mm | inch | # | STA-PURE | Neoprene | Butyl | Tygon |
6.4 | 1/4 | 26 | 960.0064.032 | 920.0064.032 | 930.0064.032 | 950.0064.032 |
9.6 | 3/8 | 73 | 960.0096.032 | 920.0096.032 | 930.0096.032 | 950.0096.032 |
12.7 | 1/2 | 82 | 960.0127.032 | 920.0127.032 | 930.0127.032 | 950.0127.032 |
15.9 | 5/8 | 184 | 960.0159.032 | 920.0159.032 | 930.0159.032 | 950.0159.032 |
| | |
|
| mm | inch | # | Fluorel | Gore
fluoroelastomer
/PTFE |
|
|
6.4 | 1/4 | 26 | 970.0064.032 | 965.0064.032 |
|
|
9.6 | 3/8 | 73 | 970.0096.032 | 965.0096.032 |
|
|
12.7 | 1/2 | 82 | 970.0127.032 | 965.0127.032 |
|
|
15.9 | 5/8 | 184 | 970.0159.032 | 965.0159.032 |
|
|
Trademarks and disclaimer
Watson-Marlow, Loadsure, Bioprene and Marprene are trademarks of Watson-Marlow Limited.
TYGON is a trademark of the Saint Gobain Performance Plastics Company.
STA-PURE is a trademark of W L Gore & Associates.
The information contained in this document is believed to be correct but Watson-Marlow Limited accepts no liability for any
errors it contains, and reserves the right to alter specifications without notice.
Patient-connected use: warning
Warning, These products are not designed for use in, and should not be used for patient connected applications.
Publication history
m-623S-gb-01.htm: Watson-Marlow 623S
First electronically published 12 02.
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