Curtis 1297 User Manual

Curtis PMC 1297 Manual
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Preliminary on Verso page is set with right edge at 7 and 7/8,
and the top (as on the Recto page) at 1/4.
7 — DIAGNOSTICS & TROUBLESHOOTING
7
DIAGNOSTICS AND TROUBLESHOOTING
The 1297 controller provides diagnostics information to assist technicians in
troubleshooting pump system problems. The diagnostics information can be
obtained by observing the appropriate display on a 13XX programmer, the fault
codes issued by the Status LED, or the fault display on the Spyglass gauge. Refer
to the troubleshooting chart (Table 5) for suggestions covering a wide range of
possible faults.
PROGRAMMER DIAGNOSTICS
The programmer presents complete diagnostic information in plain language.
Faults are displayed in the Diagnostics Menu (see column 2 in the troubleshoot-
ing chart), and the status of the controller inputs/outputs is displayed in the Test
Menu.
Accessing the Diagnostic History Menu provides a list of the faults that
have occurred since the diagnostic history file was last cleared. Checking (and
clearing) the diagnostic history file is recommended each time the vehicle is
brought in for maintenance.
The following 4-step diagnostic and troubleshooting process is recom-
mended: (1) visually inspect the vehicle for obvious problems; (2) diagnose the
problem, using the programmer; (3) test the circuitry with the programmer;
and (4) correct the problem. Repeat the last three steps as necessary until the
pump system is operational.
Example: A vehicle that does not operate in “forward” is brought in
for repair.
STEP 1: Examine the vehicle and its wiring for any obvious problems,
such as broken wires or loose connections.
STEP 2: Connect the programmer, select the Diagnostics Menu, and
read the displayed fault information. In this example, the display
shows “No Known Faults,” indicating that the controller has not
detected anything out of the norm.
STEP 3: Select the Test Menu, and observe the status of the inputs and
outputs in the forward direction. In this example, the display shows
that the forward switch did not close when “forward” was selected,
which means the problem is either in the forward switch or the switch
wiring.
STEP 4: Check or replace the forward switch and wiring and repeat the
test. If the programmer shows the forward switch closing and the
system now operates normally, the problem has been corrected.

Curtis 1297 Specifications

General

Brand	Curtis
Model	1297
Category	Controller
Language	English