Meler B4 NON-STOP, Instruction Manual

Page: 42 / 78

FOCKE MELER GLUING SOLUTIONS
4-14
MELTER OPERATION
Pumping safety measures
To prevent the equipment from starting up unexpectedly, the control panel
features by default a safety option that prevents pumping from commencing
until enabled by pressing the ON-OFF button on the control card. This function
may be disabled in the ‘User configuration menu’.
For the pumping control to allow the pump to operate, the pumping ON-OFF
button must be pressed, leaving it enabled (the red LED on the pumping ON-OFF
button will turn off). When enabled, the control card will allow pumping as soon as
all the required conditions are recovered, including pumping permission.
When pumping safety is enabled:
• In the event of loss of 24 Vdc power supply or the control panel is turned
off with the control card ON-OFF button, the control will start up with
pumping disabled (red ON-OFF button LED is illuminated) on recovering
the power supply or turning the control card on, and prevent pump
operation even if the pumping permission input is closed again, until the
pumping ON-OFF button is pressed and the red LED turns off.
• Whenever the pumping permission input is deactivated, the control
disables pumping (red ON-OFF button LED is illuminated) and prevents
the operation of the pump even if the pumping permission input is
closed again, until the pumping ON-OFF button is pressed and the red
LED turns off.
• Whenever an error occurs, the control disables pumping (red ON-OFF
button LED is illuminated) and prevents the operation of the pump until
the error is reset, the pumping ON-OFF button is pressed again and the
red LED turns off.
When pumping safety is disabled:
• In the event of loss of 24 Vdc power supply or the control is turned off
with the control card ON-OFF button, on recovering the power supply or
turning on the control card the control maintains the enabled status of the
pumping ON-OFF button (if this was at the position ON, the unit will start
up in ON and if it was at the position OFF it will start up in OFF).
• Whenever pumping permission input is deactivated, the pumping
control stops the pumping operation, but does not disable it (red ON-
OFF button LED turned off) and will allow pumping operation as soon
as the pumping permission input is closed again.
• Whenever an error occurs, the pumping control stops the pumping
operation, but does not disable it (red ON-OFF button LED turned off)
and will allow pumping operation.
To deactivate pump safety see the section ‘User configuration menu’,
paragraph 5.
Password security
If the option selected in the password security configuration is ‘1’, security
enabled, only the control card ON/OFF and pumping ON/OFF buttons will be
operational. While this security option is programmed, in order to avoid the
need to turn off and restart the machine to return to the ‘User configuration