Watson-Marlow 720DuN User Manual
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Loosen the gland cap (do not remove it) and pass the cable in through the
gland. When it has passed through the gland, continue to push the cable
through.
The inside of the module is shaped to guide the cable past the printed circuit
board inside. Continued pushing will feed in enough cable to grip inside the
module with the fingers.
Pull through sufficient cable to reach the connectors required. Leave a little
slack.
Strip the outer sheath as necessary and remove 5mm of insulation from the
conductors. No tinning or ferrule is required. Note: If very stiff or large-diame-
ter cable is used, it may be convenient to strip the outer sheath before passing
the cable’s conductors through the gland. However, to ensure a seal, cable with
an undamaged sheath must be present within the gland when it is tightened.
Twist a suitable length of the cable screen. Loosen one of the pcb retaining
screws and wind the shielding round it. Secure the screen by refastening the
screw. Alternatively, secure the cable screen to the adjacent spade connection
(where fitted).
Push the bared conductor into the square hole in the connector. When the con-
ductor is fully in, tighten the retaining screw to hold it in place.
When all conductors are in position, use a 21mm spanner to tighten the gland
cap to 2.5Nm to ensure a seal. Alternatively, tighten the gland by hand until it
is finger-tight and use a spanner to tighten it further by one-half a turn.
Do not strap the control and mains power cables together.
720N watertight module pcb connectors:
Never apply mains power to the terminals within the
720N module. 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 rating on the relay contacts of this pump
is 30V DC; maximum load 30W. Note: Also suitable for low
power: ie, 1mA at 5VDC minimum.
