Graco Gusmer Reactor H-25 Operation page 25

Check the pressure of each proportioning pump
using the component A and B gauges. The pres-
sures should be approximately equal and must
remain fixed.
d.
To display cycle count, press
To clear counter, press and hold
e.
Press
sure scale.
4. Change pressure imbalance
setting (optional)
The pressure imbalance function (status code 24, page
32) detects conditions that can cause off-ratio spray,
such as loss of feed pressure/supply, pump seal failure,
clogged fluid inlet filter, or a fluid leak.
Code 24 (pressure imbalance) is set to an alarm as
the default. To change to a warning, see
repair/parts manual 311300.
The pressure imbalance default is factory-set at 500 psi
(3.5 MPa, 35 bar). For tighter ratio error detection, select
a lower value. For looser detection or to avoid nuisance
alarms, select a higher value.
a.
Turn main power switch OFF
311299C
for 3 sec.
PSI BAR
or to change pres-
b.
.
c.
Table 3: Available Pressure Imbalance Settings
PSI
100
200
300
400
*500
* Factory default setting.
d.
.
PSI
Press and hold or
turn main power switch ON
Display will read dP500 for psi or dP_35
for bar.
Press or to select desired
pressure differential (100-999 in incre-
ments of 100 psi, or 7-70 in increments
of 7 bar). See T 3.
ABLE
BAR PSI BAR
7 600
14 700
21 800
28 900
*35 999
Turn main power switch OFF
save changes.
Startup
BAR
, then
.
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