WATSON-MARLOW 323U (01) PDF DOCUMENT

Unpack all parts carefully, retaining the packaging until you are sure all components are present and in good order. Check against the components supplied list. Check that all components are present and inspect for damage in transit. If anything is missing or damaged, contact your distributor immediately.

Components supplied:

The WATSON-MARLOW 323U pump drive unit is fitted with one or more 313, 314, or 501RL/RL2 series pumpheads.

The designated mains power lead for your pump.

Compliance documentation.

Safety information documentation.

Packaging disposal:

Dispose of packaging materials safely, and in accordance with regulations in your area. The outer carton is made of corrugated cardboard and can be recycled.

Storage:

This product has an extended shelf life. However, care should be taken after storage to ensure that all parts function correctly. Users should be aware that the pump contains a battery with an unused life of seven years. Long-term storage is not recommended for peristaltic pump tubing. Please observe the storage recommendations and use-by dates which apply to tubing you may wish to bring into service after storage.

In the interests of safety, the WATSON-MARLOW 323U pump and the tubing selected should only be used by competent, suitably trained personnel after they have read and understood the manual, and considered any hazard involved. If the pump is used in a manner not specified, the protection provided by the pump may be impaired.

Fundamental work with regard to lifting, transportation, installation, starting-up, maintenance and repair should be performed by qualified personnel only. The unit must be isolated from mains power while work is being carried out.

The following symbols are used on the pump and in the manual:

Caution symbol (!): Refer to accompanying documents.

Moving parts symbol: Do not allow fingers to contact moving parts.

WEEE symbol: Recycle this product under the terms of the EU Waste Electrical and Electronic Equipment (WEEE) Directive.

Fuse warning: There is a user-replaceable type T1.0AH 250V fuse in the fuse drawer of the IEC mains connector at the back of the pump, which also contains a spare fuse. There are no user-serviceable fuses or parts inside this pump.

Explosive atmospheres warning: This product does not comply with the ATEX directive and must not be used in explosive atmospheres.

Before opening the pumphead track, ensure the following safety directions are followed:

Ensure that the pump is isolated from the mains power.

Ensure that there is no pressure in the pipeline.

If a tube failure has occurred, ensure that any fluid in the pumphead has been allowed to drain to a suitable vessel, container or drain.

Ensure that protective clothing and eye protection are worn if hazardous fluids are pumped.

The exterior surfaces of the pump may get hot during operation. Do not take hold of the pump while it is running. Let it cool after use before handling it.

No attempt should be made to run the drive without a pumphead fitted.

Position: A correctly engineered installation will promote long tube life. Site the pump on a flat, horizontal, rigid surface, free from excessive vibration. Allow a flow of air around the pump to ensure that heat can be dissipated. Ensure that the temperature around the pump does not exceed 40C.

Emergency disconnection: The pump’s mains plug is the disconnecting device. Do not position the pump so that it is difficult to disconnect the mains plug. The STOP key on the keypad will always stop the pump. However, it is recommended that a suitable local emergency stop device is fitted into the mains supply to the pump.

Valves: Peristaltic pumps are self-priming and self-sealing against backflow. No valves are required in inlet or discharge lines. Valves in the process flow must be opened before the pump operates. Users are advised to fit a pressure relief device between the pump and any valve on the discharge side of the pump to protect against damage caused by accidental operation with the discharge valve closed.

Tubing materials run-in advice: Sta-Pure and Marprene tubing are hard to compress when new. When using tubing made of these materials, the first 30 seconds should be at a speed of 10 rpm or greater. If the pump is run slower, the safety system built into pump drive’s software may cause it to stop and display an over-current error message.

Do observe suitable precautions for the reduction of electrostatic charge when operating/maintaining the pump, such as ESD protective workwear or conductive strapping.

Do operate the pump on a flat horizontal surface. The pump requires a free flow of air for cooling. Do not block the air vents beneath the pump or at the rear.

Do not stack pumps more than three high.

Do use only single phase mains electricity supplies.

Do keep delivery and suction tubes as short and direct as possible – though ideally not shorter than 1m – and follow the straightest route. Use bends of large radius: at least four times the tubing diameter.

Do ensure that on longer tube runs at least 1m of smooth bore flexible tubing is connected to the inlet and discharge port of the pumphead to help to minimize impulse losses and pulsation in the pipeline.

Do site the pump at or just below the level of the fluid to be pumped if possible. This will ensure flooded suction.

Do keep the pumphead track and all moving parts clean and free from contamination and debris.

Do run at slow speed when pumping viscous fluids.

Do recalibrate after changing pump tubes, fluid, or any connecting pipework. It is also recommended that the pump is recalibrated periodically to maintain accuracy.

When using Marprene or Bioprene continuous tubing, do re-tension the tube after the first 30 minutes of running.

A well regulated electrical mains supply is required. The voltage selector is mounted in the switchplate at the rear of the pump. Set the voltage selector to 115V for 100-120V 50/60Hz supplies or 230V for 200-240V 50/60Hz supplies. Always check the voltage selector switch before connecting the mains supply. Make suitable connection to an earthed, single-phase mains electricity supply.

We recommend using commercially available supply voltage surge suppression where there is excessive electrical noise.

Input line fusing: type T1.0AH 250V 20mm time-delayed cartridge fuse, located in the combined mains IEC inlet socket and fuse drawer at the rear of the pump. A spare fuse is also provided in the drawer.

Conductor coding:

Ensure that proper connections are achieved between the pump tube and suction and discharge piping.

Ensure proper connection has been made to a suitable power supply.

Ensure that the recommendations in the “Good pump installation practice” section are followed.

Check the position of the voltage selector switch.

Check the mains power switch at the rear of the pump.

Check the fuse in the mains inlet socket at the rear of the pump.

Ensure that the mains IEC plug is correctly fitted in the mains IEC inlet socket.

Switch on the power supply at the rear of the pump. The pump runs a power-on test to confirm proper functioning of the memory and hardware. If a fault is found, an error message is displayed.

If the pump starts running look for the ! symbol on the display. This ! symbol indicates that the pump is set for auto-restart. Press the STOP key if you need to stop the pump.

The pump is now ready to operate according to the defaults listed below. All operating parameters may be changed by means of key-presses.

First-time start-up defaults for WATSON-MARLOW 323U:

Auto-restart will restart the pump after mains power interruptions. The pump will return to its previous operating state.

To install auto-restart:

1. Mains power must be available to the pump to engage auto-restart.

2. Stop the pump. Turn off the mains power switch at the rear of the pump.

3. Hold down the START key and turn the mains power switch on. The ! symbol will show on the display.

4. Start the pump. If the mains supply is interrupted the pump will automatically restart when the mains power returns.

5. Auto-restart is retained while the pump is switched off.

To remove auto-restart:

Switch off the mains power at the rear of the pump. Hold down the STOP key and turn the mains power switch on. The ! symbol will go out.

Note: Do not use auto-restart for more than 10 starts per hour. We recommend remote control where a high number of starts is required.

You can adjust the speed on the display while the pump is stopped or running.

Use the UP key to increase the set speed. Use the DOWN key to reduce the set speed. We recommend that the speed is reduced to a minimum before starting the pump.

The WATSON-MARLOW 323U increments in steps of 1rpm.

Press the DIRECTION key to reverse the direction of rotation.

The direction is shown by the rotation symbol. The direction may be changed while the pump is stopped or running.

Start the pump with the START key.

The rotation symbol will move to confirm that the pump is operating. The symbol is static when the pump is stopped.

Stop the pump with the STOP key. The pump will stop immediately.

The display will continue to show the previous speed and direction. The pump will return to this speed when the START key is pressed again.

You can reduce the pump speed to 0 rpm with the DOWN key. The pump is still in the running state and the rotation symbol will continue to move. Press the UP key to return the pump to the minimum speed.

The keypad can be locked to prevent changes to pump speed or other settings, and make it possible only to start or stop the pump. The padlock symbol will show on the display.

To lock while running: Set the pump running. Hold down the START key for more than 2 seconds to lock the keypad. The padlock symbol will show and only the START and STOP key will function.

To lock while stopped: The keypad may also be locked while the pump is stopped. Hold down the STOP key for more than 2 seconds. The padlock symbol will show. The pump will start and stop but the speed and direction will be locked.

To unlock: To unlock the keypad while the pump is running hold down the START key for a further 2 seconds. The padlock symbol is removed. If the pump is stopped hold down the STOP key until the padlock symbol is removed.

The MemoDose facility allows the pump to dispense a set quantity or dose of fluid each time a key is pressed.

1. Set the dose: Set the pump speed and direction. Place a suitable measuring container at the outlet and START the pump. When the required volume of fluid has been dispensed, press the STOP key twice within half a second. This starts the MemoDose feature. The pump has now recorded the dose. The display will show “dos” for 3 seconds, then change to show 100%.

2. Repeat the dose: Measure the quantity of fluid that was dispensed. If the quantity is correct, press START to repeat the dose.

3. Adjust the dose: If the initial dose was larger than required, use the DOWN key to reduce the volume % shown on the display. If the initial dose was smaller than required, use the UP key to increase the volume %. You may adjust the dose size down to 1% or up to 999%.

4. Dispense the new dose: Press START. The pump will dispense the new dose and the display will count down as the dose proceeds. The pump will stop when the new dose is complete.

5. Exit MemoDose: Press the STOP key twice within half a second to exit MemoDose and return to manual operation.

Notes:

You must exit MemoDose to change pump speed and direction. To retain the MemoDose value through a power interruption the pump must be in auto-restart.

MemoDose doses can be triggered remotely.

Always check the dose size when changing pump tubes, fluid, or any connecting pipework.

The pump will normally revert to manual control when it is switched on. Check that the pump is ready to run before selecting automatic operation, as remote control signals may start the pump without warning.

Press the MODE key to select automatic operation. The pump will respond to the analogue signal as soon as analogue is selected. The UP and DOWN keys will be disabled. Pressing the MODE key again will return to manual control. The display will show “ana” for analogue control.

In an emergency, press the STOP key. The pump will return directly to manual control and stop.

Auto-restart will retain automatic operation while the pump is switched off.

Pump starting, direction, and speed may be remotely controlled via the 25-way D connector at the rear of the pump. The analogue interface accepts either 0-10 VDC or 4-20 mA signals. Never apply mains voltage to the 25-way D socket.

Speed Control:

Pump speed will increase with an increasing analogue signal. The pump will be stopped at 0V or 4mA.

Analogue voltage signal: Use pins 4 and 14. Input impedance 200 kohms, Maximum voltage signal 10V.

Analogue current signal: Use pins 4 and 14, link pins 3 and 15. Input impedance 250 ohms, Maximum current signal 20mA.

Remote potentiometer: Connect a potentiometer (1K to 10KOhms, min 0.25W) to pins 4, 1, and 2. Set the pump to analogue control.

Stop/Start:

A remote stop/start switch may be connected between pins 7 and 17. This works in both manual and analogue control modes. A TTL compatible logic signal may also be applied to pin 7 (Low 0V, High 5V max. Ground to pin 17).

Direction Input (analogue control mode only):

Connect a remote direction switch between pins 5 and 17. Also link pins 6 and 18. Open switch for clockwise rotation, close switch for counter-clockwise rotation. A TTL compatible logic signal may also be applied to pin 5 (Ground to pin 17). High (5V max) for clockwise, Low (0V) for counter-clockwise.

To invert the stop/start action of the switch or TTL compatible signal:

1. Turn off the mains power switch at the rear of the pump.

2. Hold down the STOP and DIRECTION keys. Turn on the mains power switch.

3. The display will show the present signal setting; RS for factory default response or IRS for inverted signal response.

4. Press the UP or DOWN key to reverse the present setting.

5. Press the START key to set the signal response and return to manual operation.

Note: If you invert the operation of the remote stop/start switch, you must connect a wire link from pin 7 to 17 to be able to start the pump from the keypad.

The WATSON-MARLOW 323U pump is sealed to IP31 and is suitable for wipe down cleaning. Do not use solvents, mechanical scourers, strong organic acids, or alkali based cleaning solutions.

Remove any tubing, detach the pumphead, and wash the pumphead thoroughly with a mild solution of detergent in water.

Check moving parts of the rotor from time to time for freedom of movement. Lubricate pivot points and rollers occasionally with Teflon lubricating oil.

The pump has a good, broad chemical resistance to inorganic acids, saline solutions, alkalis, some hydrocarbons and a large number of oils and greases. It is suitable for wipe down but not for long term contact with alcohols. The case may be damaged by contact with strong acids or strong solvents.

There are no user serviceable parts inside the pump. The unit should be returned for service.

If the pump display remains blank when the pump is on, make the following checks:

Check the position of the voltage selector switch at the rear of the pump.

Check the mains power switch at the rear of the pump.

Check that mains power is available to the pump.

Check the fuse in the fuse drawer of the IEC mains power connector at the rear of the pump.

Check the fuse in the mains power plug if one is present.

If the pump runs but there is little or no flow, make the following checks:

Check that the tube and rotor are in the pumphead.

Check that fluid is supplied to the pump.

Check that the tube is not split or burst.

Check for any kinks or blockages in the lines.

Check that any valves in the lines are open.

Check that the correct wall-thickness tube is being used.

Check direction of rotation.

Check that the rotor is not slipping on the drive shaft.

If a fault condition is detected the pump will stop and all keys will be disabled. The display will show the error number:

Before opening the pumphead track please ensure that the following safety directions are followed:

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 to a suitable drain.

Ensure that protective clothing and eye protection are worn if hazardous products are being pumped.

Installation:

The 400 rpm drives have an integral mounting plate. Engage the pumphead drive slot with the end of the pump drive shaft. Continue to align the pumphead until the bayonet engages with the mounting plate. Turn the pumphead clockwise until it locks into an upright position.

Removal:

Push the locking lever back and turn the pumphead anti-clockwise until it is free from the mounting plate.

Tube loading:

1. Switch off the pump before tube loading. Lift the “flip top” track until fully open.

2. Set the tube clamps to the correct tube size. The track must be fully open. Align the scale on both sides of the pumphead.

3. Select enough tube length for the curve of the pump track. Slide the tube into the open pumphead. The tube must not be twisted or stretched against the rollers.

4. Ensure the tubing locates in the centre of the tube clamps. Carefully lower the track. Check that the tube is not crushed in the clamps or over stretched.

When using Marprene tubing:

Re-tension new tube after the first 30 minutes of running. Stop the pump, release the flip top, and allow the tube to resettle naturally across the rollers. Re-clamp the tube and re-start the pump. This corrects the normal stretching that occurs with new Marprene tube.

Installation:

The 501RL track will fit on the drive in three orientations. Secure the track with the locating screw. The rotor grips the drive shaft via a split collet. Ensure the drive shaft is degreased before fitting the rotor to prevent slipping. Tighten the rotor screw to a torque of 3Nm.

Tube Loading:

1. Switch off the mains supply. Unlock and open the pumphead guard.

2. Select a minimum length of 240mm of tubing. Fit one end of the tubing into a clamp.

3. The rotor has tube guide rollers that pull the tube into the pumphead during loading. Turn the rotor carefully until the tube guides pick up the tube. Continue to turn the rotor, and feed the tubing in between the guides.

4. When the tube has gone round the pump track, fit the other end of the tubing into the clamp. Check that the tubing has fitted naturally against the track for best tube life. Release the clamps and adjust the tubing if it is slack, twisted, or stretched.

5. The tube clamps can accommodate various tube diameters by pushing in, or pulling out, the grip bars within the clamp. Set the clamps to apply the minimum necessary pressure to the tubing.

6. Restart the pump. Free the downstream clamp for a short time, while the pump is running, so that the tube can find its natural length. Keep fingers clear of the moving rotor. Shut and lock the guard after adjusting the tube.

When using Marprene tubing:

Re-tension new tube after the first 30 minutes of running. Stop the pump and release the tube clamp at the outlet. Pull any slack tube from the pumphead and re-clamp the tube. Re-start the pump.

Warning: These products are not designed for use in, and should not be used for patient-connected applications.