Watson-Marlow 605Di - Manual (Page 5)

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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 by releasing the
tube clamp on the delivery side a little and pulling the tube tight. 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 605Di 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.
• Remove the small transparent plate on the rear panel to gain access to the voltage selector and terminal block.
• Set the voltage selector to either 120V for 100-120V 50/60Hz single phase AC supplies or 240V for 220-240V 50/60Hz single
phase AC supplies.
• Route the mains supply cable through the entry point to the right of the recess, and couple the cable to the terminal block as
shown on the rear panel.
• There are two alternative connectors. One accepts 20mm rigid or flexible conduit, and the other accepts three core 0.75 square
millimetre PVC sheathed mains cable (via the screwed adapter supplied) so that a mains lead can be used.
• Ensure that the mains lead is securely retained in the strain relief gland so that IP55 ingress protection is maintained.
• Securely replace the transparent plate and the gasket over the recess.
1 Armoured cable strain relief gland GR 0018
2 Washer GR 0019
3 Strain relief gland GR 0031
Ingress protection standard will be compromised if the transparent plate is not replaced.
Rear panel recess
The pump rear panel recess houses the following:
1 Fuse holder
2 Terminal block
3 Voltage selection switch
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.