Watson-Marlow Qdos30 Universal - Manual (Page 5)

EN
Watson-Marlow qdos30 pumps product safety information 5
6.2 Wiring up the terminal connectors
Ensure that multi strand wires are terminated with a crimp, suitable for the wire
diameter. Failure to do so may result in electric shock
Ensure that unused openings on the module are sealed using the blanking plug
provided. Failure to do so may result in electric shock due to ingress of liquid or dust.
6.3 110 volt logic module pcb connectors
Apply the correct signals to the terminals shown below. Limit signals to the maximum
values shown. Do not apply voltage across other terminals. Permanent damage, not
covered by warranty, may result. The maximum load on the relay contacts of this
pump is 115VAC; max current 5A. Voltages do not require transformer isolation. The
relays are specified to switch 115VAC mains powered loads. These relay outputs are
not suitable for 24VDC logic signals.
7 Main menu
7.1 General settings
Do not use auto restart for more than 20 starts per hour. We recommend remote
control where a high number of starts is required.
8 Troubleshooting
If the pump display remains blank when the pump is switched on, make the following checks:
• Check that mains power is available to the pump.
• Check the fuse in the wall plug if one is present.
If the pump runs but there is little or no flow, make the following checks:
• Check that fluid is supplied to the pump.
• Check for any kinks or blockages in the lines.
• Check that any valves in the lines are open.
9 Pumphead replacement
Ensure contaminated pumpheads are not shipped but disposed of locally according to
regulations for contaminated items and health and safety procedures.
Always isolate the pump from the mains power supply before maintenance on the
pumphead, suction or discharge lines.
It is only possible to fit the pumphead in one orientation with the arrow pointing
upwards.
The pumphead retaining clamps should only be loosened or tightened by hand.