Meler MACRO FOAM Series, Инструкция по эксплуатации, Страница: 51 / 88

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MELTER OPERATION MA-5127-ENG MACRO FOAM SERIES MELTER MANUAL
Modes of operation
First of all, we must bear in mind that when password security is enabled and
the control card is not manipulated during one minute, it is blocked and you
need to enter the password. To prevent this from happening, password security
may be disabled following the steps in the section ‘Password security’.
Mode of operation with internal pumping control and internal pressure control
In this working mode the user has full control of the start/stop function and
pressure pump set.
Follow the steps below to use this operating mode:
1. Press the ON/OFF button to light up the control card.
2. Select ‘ok’ in the position ‘int’ and ‘ref’ in the position ‘int’.
To activate the start-up status, all of the following conditions must be met:
• That the input for pumping permission (E4) at central control is activated, as
pumping is not possible unless the equipment temperature is OK.
• That pumping is enabled with the pumping ON-OFF button (red LED is
turned off).
• That the failure input is not activated (E5), in which case starting the
pump would be impossible. In case of the pump be operating and this
input is activated, pumping will cease immediately.
If a pressure has been previously set, this value will be shown on the display
and the pump will start to rotate at the pressure indicated provided that all
prior conditions are met. Otherwise:
3. Using the up/down arrows, select the work pressure and/or wait for
pumping permission to be enabled (red LED is turned off).
At this moment, the pump will start to rotate at the pressure indicated on the
display.
4. Adjust the pressure to the value required for the application. The selected
value is set pressing the right arrow key after blinking three times.
The pump will stop whenever:
• The control card is disabled with its ON/OFF button.
• The pumping ON-OFF button is pressed (red LED is illuminated).
• When a variator error signal is activated (E5).
• When the MAXIMUM RPM ALARM TIME appears.
• When the MINIMUM RPM ALARM TIME appears.