Graco 25R128, Setup - Operation - Repair

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HMI Display Operation and Identification
3A7526B 35
Setup Screen 6 - Pre-charge
On the Pre-charge Setup Screen, press ‘F1’ or select
the
button to display the System Main Screen.
Press ‘F2’ or select the button to return to the
previous screen. Press ‘F4’ or select the button to
continue to the next screen.
The content and functions of this screen are as follows:
Pre-charge pressure
The operator may set the pre-charge pressure in psi.
Maximum pre-charge time limit
The operator may set the time in seconds the system
may spend pre-charging. If pre-charging exceeds the
set time, the system will activate the alarm to alert the
operator the limit has been reached.
Pre-charge speed
The operator may set two separate pre-charge rates.
The system will pre-charge at the set ‘Hi’ speed until
reaching the decelerate point. The decelerate point is
the target pressure at which the system will switch from
the "Hi" to the "Lo" pre-charge rate. Enter the decelerate
point as a percentage of the Pre-charge pressure. For
example, if the pre-charge pressure is 500 psi and the
decelerate point is 75%, the system will switch to the
‘Lo’ speed once pressure has reached 375 psi. The
system will then continue pre-charging at the set ‘Lo’
speed until system confirms the pressure has exceeded
the set target pressure.
F
IG
. 28 Pre-charge Setup Screen