Graco E-Flo 333587D, Операция, Страница: 42 / 110

Operation
42 333587D
Depressurization Mode
The drum platen and the dispensing valve can be
depressurized from the Run screen in Local control
mode. Press the soft key on a Tandem system to
switch between Pump 1 and Pump 2.
1. On a Tandem system, open the Ball Valves (S) on
the Tandem Block (R).
2. Press the soft key to enter the Platen
depressurization mode or the soft key to enter
the Valve depressurization mode.
NOTE: The depressurization process does not
automatically stop. You need to manually stop
depressurization as described below.
3. Press the soft key to start the
depressurization process and to stop it.
4. Press the soft key for the platen or the
soft key for the valve to exit the depressurization
mode.
Priming Mode
The pump can be primed from the Run screen in Local
control mode during operation. If the pump is being
controlled by PLC Lockout, priming must be done
through CGM. See the Prime Diagram on page 92 .
The steps are the same for the Ram and Tandem
systems. On Tandem systems, press the soft key,
if needed, to switch between Pump 1 and Pump 2.
NOTE: You are able to depressurize the platen and
valve on a pump while in priming mode.
1. On a Tandem system, open the Ball Valves (S) on
the Tandem Block (R).
1. Press the soft key to enter the pump priming
mode.
2. To control the flow of material, set your target
pressure and target flow in the fields that are
displayed above and to the right of the pump.
3. Press the soft key to start the priming
process.
4. A timer is shown to the left of the priming mode
icon and counts down when the priming starts. The
default is 5 minutes but you can adjust the timer
setting to between 1 and 9 minutes. See Pump
Screen 2 - Pump Settings on page 27 .
5. To manually stop the priming process at any time,
press the soft key. If you do not manually stop
the process, it will automatically stop when the
timer counts down to 0:00.
NOTE: If time has expired, you must press the
soft key again to resume priming. Do not press the
soft key until you have restarted the priming
process.
6. Press the soft key to exit the priming mode.
NOTE: Refer to Load Material on page 36 for
information about priming and loading material into the
pump the first time after installation.
NOTE: Priming does not appear in the Job Log.
Low Level and Empty Level Indicators
The Tandem Run screen has low material level and
empty material level indicators. You can enable or
disable the sensors for these on Pump Screen 2 -
Drum Settings on page 27 . These monitor the material
level in the drums.