E-4
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
Poor suction.
1. Outlet(s) are blocked.
2. Filter cartridge is clogged.
1. Replace filter if necessary.
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.
Dust or smoke coming out of the
outlet opening(s). Pollution of the
facility.
1. Filter cartridge is damaged.
2. Sealing on filter cartridge is
damaged.
1. Replace the filter cartridge.
Dust or smoke coming out of the
inlet opening(s). Pollution of the
facility.
1. Outlets blocked.
2. Filter cartridge clogged.
3. Non-
-
return valve(s) installed
incorrectly.
1. Remove obstructions from the outlet opening(s) and/or
connected ductwork.
2. Replace filter cartridge.
3. Install non- return valve(s) correctly.
Alarm - Red Alarm LED lights.
1. Red alarm light is on solid if
controls know there is a fault with the
VFD.
2. Red alarm light is flashing if the DP
alarm set point is reached.
1.Press alarm reset and investigate VFD fault issue. Note the
VFD has an LCD display that will assist troubleshooting with a
message or fault code to help determine reason for the fault.
2. If the Differential Pressure read by the sensor is higher than
your DP Alarm set point your alarm light will be on and
flashing and the unit most likely has already passed your
online cleaning set point (default of which is 1500 Pa). Filters
need to be changed if this DP reading is correct and your set
point is realistic.
Fan does not start running
No power
Variable Speed Drive has faulted and
has red fault light on or shows no
lights at all.
Motor defective
Controller defective
Check fuses for incoming power to the drive and for the
controls power and replace if necessary.
Remove and re-apply AC line voltage to the unit after a 1
minute delay. Variable Speed Drive will reset for some faults. If
this cycle repeats locate the source of fault- checking motor,
wiring and each connection point to motor and the VSS.
Replace VFD if determined to be faulty.
After checking for proper 24VDC supply to devices. They
should each have a green power "POW" light on. Determine
normal lights seen on an operating unit if possible and
compare to the faulty controls for hints on what component
isn't operating correctly. Replace suspected component(s).
PRISM
®
Summary of Contents for Prism 4
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