Maintenance and Troubleshooting SR-45i User’s Manual
General Troubleshooting
The following chart lists general troubleshooting guidelines for the SR-45i system
when the logic-regulator status LED’s do not give any insight to the particular
problem being experienced. Please contact KALIBURN technical support for any
issues not covered in this section. Before any tests are performed, make sure that
all system fuses are good. The primary system fuse F1 is located on the rear
panel of the unit. The control fuses F2 and F3 are located behind the rear panel of
the unit on the sub-panel.
Problem Possible
Cause
Front panel white A.C. power light will
not illuminate
1. Primary disconnect fuse blown.
2. Fuse F1 blown.
3. White light or associated wiring bad.
4. Transformer TR2 or associated wiring bad.
Unit will not energize or fan motor will
not energize when the ON button is
pressed
1. Inlet gas pressure below 65 psi.
2. Fuse F2 or F3 blown.
3. Inlet gas pressure switch (PRS1) or associated
wiring bad. PRS1 is normally open.
4. Faulty ON switch or associated wiring. The
ON switch is normally open.
5. Faulty OFF switch or associated wiring. The
OFF switch is normally closed.
6. Diode bridge temperature switch open.
7. Safety contactor (CON1) defective or needs
cleaning. Open contactor and blow out with
compressed air.
8. CON1 auxiliary switch or associated wiring
bad.
9. Fan motor or associated wiring bad.
Front panel red D.C. power light will
not illuminate
1. Regulator pressure below 65 psi while gas is
flowing.
2. Torch retaining cap or consumables not
installed correctly.
3. If the SR-45i is given a start signal and the
PCB, STRT, GAS, and L1 LED’s illuminate,
but the CON LED does not, replace the logic-
regulator p.c. board.
4. If the STRT LED does not illuminate, check
for contact closure between P8-3 and P8-4 or
between TB1-7 and TB1-8. Manually jumper
P8-3 and P8-4 and see if the STRT LED
illuminates.
5. If the L1 LED does not illuminate, be sure the
regulator pressure is adjusted to 65 psi while
gas is flowing through the torch. If the
pressure is adjusted to 65 psi, the torch
interlock pressure switch (PRS2) or associated
wiring may be bad. PRS2 is normally open.
6. If the CON LED illuminates, verify that the
main contactor (CON2) pulls in. If it does not,
5-8
Содержание SR-45i
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