WATSON-MARLOW 323E (01) PDF DOCUMENT

The WATSON-MARLOW 323E pump is supplied with the following components:

A dedicated 323E pump drive unit fitted with one or more 313 or 314 pumpheads.

The designated mains power lead for your pump.

Compliance documentation.

Safety information documentation.

Note: Some versions of this product may include different components. Check against your purchase order.

Equipment that 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. A decontamination certificate must be attached to the outside of the shipping carton, even if the WATSON-MARLOW 323E 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.

A compressible tube is squeezed between a roller and a track on an arc of a circle, creating a seal at the point of contact. As the roller advances along the tube, the seal also advances. After the roller has passed, the tube returns to its original shape, creating a partial vacuum which is filled by fluid drawn from the inlet port.

Before the roller reaches the end of the track, a second roller compresses the tube at the start of the track, isolating a packet of fluid between the compression points. As the first roller leaves the track, the second continues to advance, expelling the packet of fluid through the pump’s discharge port. At the same time, a new partial vacuum is created behind the second roller into which more fluid is drawn from the inlet port.

Backflow and siphoning do not occur, and the WATSON-MARLOW 323E pump effectively seals the tube when it is inactive. No valves are needed.

The WATSON-MARLOW 323E pump and tubing should only be used by competent, suitably trained personnel who have read and understood the manual.

A symbol with an exclamation mark inside a triangle means: Caution, refer to accompanying documents.

A symbol of a hand with fingers near gears means: Do not allow fingers to contact moving parts.

A symbol of a crossed-out wheeled bin means: Recycle this product under the terms of the EU Waste Electrical and Electronic Equipment (WEEE) Directive.

Fundamental work regarding 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.

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 other user-serviceable fuses or parts inside the pump.

Before opening the track of the pumphead on your WATSON-MARLOW 323E, 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.

Primary operator protection from rotating parts of the pump is provided by the pumphead track.

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

The WATSON-MARLOW 323E pump must be used only for its intended purpose and must be accessible at all times. The mains plug is the disconnecting device; do not position the pump so that it is difficult to disconnect. Do not fit any devices to the drive unit other than those tested and approved by Watson-Marlow.

If hazardous fluids are to be pumped, specific safety procedures must be in place.

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

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

The following table lists the features available on the WATSON-MARLOW 323E and comparable models.

Position: Site the WATSON-MARLOW 323E pump on a flat, horizontal, rigid surface, free from excessive vibration. Allow air flow around the pump for heat dissipation and ensure the ambient temperature does not exceed 40C.

Emergency disconnection: The mains plug is the disconnecting device. Do not position the pump where it is difficult to unplug. The STOP key will always stop the pump, but a local emergency stop device in the mains supply is recommended.

Valves: Peristaltic pumps are self-priming and self-sealing, so no valves are needed. Any valves in the process flow must be open before the pump operates. A pressure relief device is advised on the discharge side if a valve is present.

Tubing materials run-in advice: Sta-Pure and Marprene tubing are hard to compress when new. For the first 30 seconds, run the pump at 10 rpm or greater to avoid an over-current error message.

Do observe precautions for reducing electrostatic charge (e.g., ESD protective workwear).

Do operate the WATSON-MARLOW 323E on a flat horizontal surface and do not block air vents.

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 (ideally not shorter than 1m). Use bends of a large radius.

Do ensure on longer tube runs that at least 1m of smooth bore flexible tubing is connected to the inlet and discharge ports to minimize pulsation.

Do site the pump at or just below the fluid level for flooded suction.

Do keep the pumphead track and moving parts clean.

Do run at slow speed when pumping viscous fluids.

Do recalibrate after changing pump tubes, fluid, or connecting pipework.

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. It is not recommended to site the WATSON-MARLOW 323E drive alongside “dirty” electrical mains supplies without special attention to noise.

The voltage selector is at the rear of the pump. Set it to 115V for 100-120V 50/60Hz supplies or 230V for 200-240V 50/60Hz supplies. Always check the selector switch before connecting the mains supply. Connect to an earthed, single-phase mains electricity supply. The mains plug must be a separable plug (not a locking type).

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

The input line fuse is a 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.

Conductor Coding:

Before starting your WATSON-MARLOW 323E, please perform the following checks:

Ensure 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 WATSON-MARLOW 323E pump. The pump will run a power-on test. If a fault is found, an error message is displayed. If the pump starts running, look for the ‘!’ symbol on the display, which indicates auto-restart is set. 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:

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 reducing the speed to a minimum before starting the pump.

The WATSON-MARLOW 323E increments in steps of 5rpm.

Press the DIRECTION key to reverse the direction of rotation. The direction is shown by the rotation symbol and may be changed while the pump is stopped or running.

Start the pump with the START key. The rotation symbol will move to confirm operation.

Stop the pump with the STOP key. The pump will stop immediately, and the display will show the previous speed and direction.

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 WATSON-MARLOW 323E 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 case has good chemical resistance but 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 WATSON-MARLOW 323E 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 WATSON-MARLOW 323E 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 on your WATSON-MARLOW 323E, the pump will stop and display an error number. All keys will be disabled.

Before opening the pumphead track on your WATSON-MARLOW 323E, 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.

The WATSON-MARLOW 323E drives have an integral mounting plate to attach a 313 or 314 pumphead.

Installation:

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.

1. Switch off the WATSON-MARLOW 323E 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. If the tube is dirty or there is a high suction lift, the tube clamps may need a smaller setting.

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 overstretched.

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. Re-clamp the tube and restart the pump. This corrects normal stretching and is essential for good tube life.

Flow rates were obtained using silicone tubing with the pumphead rotating clockwise, pumping water at 20°C with zero suction and delivery pressures. Note: 314D pumpheads should run no faster than 300 rpm in continuous use. Speeds up to 400 rpm are permissible for intermittent use.

Flow rates, 313D, 1.6mm wall (ml/min)

Flow rates, 314D, 1.6mm wall (ml/min)

Warning: The WATSON-MARLOW 323E pump is not designed for use in, and should not be used for, patient-connected applications.