E-3
TROUBLESHOOTING
Observe all Safety Guidelines detailed throughout this manual
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Lincoln Authorized Service Facility for technical troubleshooting assistance before you proceed.
WWW.LINCOLNELECTRIC.COM/LOCATOR
Observe all Safety Guidelines detailed throughout this manual
PROBLEMS
(SYMPTOMS)
POSSIBLE
CAUSE
RECOMMENDED
COURSE OF ACTION
FUNCTION PROBLEMS
Filter replacement alarm does
not function.
1. Wrong DP reading reported by
sensor.
2. Incorrect duct air velocity.
1. The Differential Pressure sensor PD1 is read after the analog input
module in the L series Prism. This is located in the control cabinet in
the leg base and it's reading the output of the differential pressure
sensor, note an LCD display on this sensor should give a reasonable
reading during operation. If it's giving a valid output the module
reading this value and reporting it back to the controls via the comm
cable. confirming solid electrical and tubing connections you can tap
into the readings with a "T" fitting with a hand held manometer to
confirm its readout matches the real DP. Calibrate or re-zero the
sensor if needed, change it if it doesn't operate properly.
The air flow is diminished.
1. Filter may be clogged.
1. Replace filter if necessary.
2. Make sure your duct pressure sensor is giving a proper reading
into the VFD. Fan speed is controlled via this input feeding into a PID
control loop.
3. If all recommended possible areas of misadjustment have been
checked and the problem persists, Contact your local Lincoln
Authorized Field Service Facility. 1-888-935-3878.
Particulate is emitting from the
collection drum.
1. Collection drum is full.
2. Possible bad seal and clamp on
the collection drum.
1. Empty the collection drum.
2. Calibrate or re-zero the duct pressure sensor, if the output is still
bad change the duct pressure sensor.
3. If all recommended possible areas of misadjustment have been
checked and the problem persists, Contact your local Lincoln
Authorized Field Service Facility. 1-888-935-3878.
There is an abnormal amount
of weld fume in the work zone.
1. Check to make sure the machine
is powered on.
2. Check nozzle position.
3. Have an electrician check fan
speed on VFD.
4. Make sure your duct pressure
sensor is giving a proper reading
into the VFD. Fan speed is
controlled via this input feeding into
a PID control loop.
1. Calibrate or re-zero the duct pressure sensor, if the output is still
bad change the duct pressure sensor.
2. If all recommended possible areas of misadjustment have been
checked and the problem persists, Contact your local Lincoln
Authorized Field Service Facility. 1-888-935-3878.
PRISM
®
Summary of Contents for Prism 4
Page 31: ...A 23 INSTALLATION d Reclasp filter handles FIGURE A 15 PRISM ...
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