FOCKE MELER GLUING SOLUTIONS
4-12
MELTER OPERATION
However, take into consideration that PUR adhesive undergoes moisture
curing and deteriorates easily at high temperatures and therefore the more
time the equipment is left on without pumping, regardless of whether it is left
to heat as normal or is in standby mode, the greater the possibility that the
adhesive will deteriorate.
Pump start-up
The gear pump is connected and disconnected using the switch on the pump
control card placed on the front part of the equipment, provided that the start
signal on the control board has been activated.
The motor can be started from an external contact, for example, using the
trigger on a manual applicator, when this contact is connected to the rear
round connector next to the hose connection (optional applicator switch).
In this way, the motor is activated while the external contact remains pressed
down.
Pumping control
Starting up the pump control card
The pump control card (hereingafter also control card), features an ON-OFF
button that allows us to turn off the displays and LEDs (leaving on only the 24
Vdc power supply LED)
The control card will turn off automatically depending on the status of
pumping permission input:
• Whenever the pumping permission input is deactivated, the interface
will be turned off and the control will be inoperative, unless turned on
with the control card ON-OFF button.
• Should the 24 Vdc power supply to the control card be lost, on
recovering the power supply the control card will remain turned off
until pumping permission input is activated. If on recovering the
power supply the pumping permission input is activated, it will turn on
directly.
• If the power supply is available and pumping permission has not been
received and the control card be turned off it must be turned on with
the control card ON-OFF button.
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