Meler MACRO FOAM Series, Инструкция по эксплуатации, Страница: 60 / 88

FOCKE MELER GLUING SOLUTIONS, S.A.
4-26
MELTER OPERATION
Current Vin voltage display
Whenever the Vin key is held pressed, the three digits on the right will show
the input voltage reading to one decimal point.
If the values for any point in the pressure curve table is being edited, and the
Vin key is held pressed for 3 seconds, the voltage value which is operating at
this time it will be copied to that value on the table.
By-pass valve regulation
For safety reasons, the pressure must be discharged when the circuit exceeds
the operating value (normally with a closed circuit and the pump activated),
which makes the use of a discharge valve or a by-pass valve necessary.
This valve may be a manual adjustment valve, using a threaded screw, or
with pneumatic control, using a pressure regulator and a pressure gauge. In
the latter case, the adhesive circuit pressure has a 1:13 ratio to the pressure
displayed on the pressure gauge.
To adjust the pressure with this valve model, follow these steps:
1. Unlock the pressure regulator control by pulling on it gently.
2. Turn it clockwise to increase the pressure. This will be seen reflected
on the pressure gauge located next to it.
Start up and operation of the loader
The automatic pellet feeder operates fully automatically regardless of whether
the equipment temperature is OK; for example, if the equipment is running
it will begin to load whenever it detects that the level is too low, even if the
equipment temperature is not OK. The normal loading process is as follows,
and proceeds according to the scheme below:
1. Push the switch on the front of the control panel to switch on the
equipment (see figure).
2. If the melter basket level is high enough, autoloading will not be
activated and the warning light and the buzzer will both be OFF.
3. If it detects that the level is too low after the level stabilisation time has
passed, the electrovalve will be activated and the warning light will go
on, at which point loading will begin.
4. When it detects that the level is high enough after the disconnection
delay time has passed, loading will stop, and the electrovalve and the
warning light will both switch off.
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