5
revised 03/15
SMoG-HoG
®
electronic air cleaner
6.3 TROUBLESHOOTING PROCEDURE
caution
HIGH VOLTAGE SPECIFICATIONS:
Ionizer Circuit Operating Range: 10.0 to 11.8 KVDC
Collector Cell Circuit Operating Range: 5.0 to 7.5 KVDC
there will be continuous cell arcing if cell voltages
exceed 7.5 KVDC.
if there is a dead short condition or arcing condition
usually the problem is within the collector cell. the
power pack should be confirmed that the power pack
is operational, start with step (1), before proceeding to
the step (2). In the event of a dead short condition the
power pack is designed to “shut down” the high voltage
to the ionizer and collector cell circuits causing the
indicator light to flash. When the dead short condition is
removed the high voltage output will return to normal.
the indicator light will be illuminated. the power pack is
self protecting from dead short conditions.
all connectors on the power pack are identified with
name and wire number with the exception of the
ground connector (green wire to this connection) Refer
to figure 7. Step 1 and Step 2 do not require a high
voltage probe.
the ionizer section supports 10 mil tungsten wires
which apply a high voltage positive charge to the
contaminant particles.
the cell section contains plates alternately charged
collecting the charged particles from the ionizer section.
High voltage problems can generally be isolated
by reference to the indicator light. If the indicator
light(s) are illuminated and the unit is moving air
but efficiency is below normal (unicells not dirty,
smoke discharging from the exhaust blower) check
that the contact springs are in the correct locations,
see Figure 1.
!
C A U T I O N
Risk of electrical shock. The high voltage
circuits to the ionizer and collector should be
grounded before removing the power pack, high
voltage wires, door feed through insulators
and unicell(s). The grounding procedure can
be accomplished by waiting one minute after
turning the unit off and referring to Figures 5
and 6. An internal resistor within the power
pack discharges the residual high voltage. The
grounding procedure statement is not identified
within the troubleshooting steps but should be
performed. The power pack total current output
is limited to a maximum of 5 milliamps to assure
personnel safety.
a high voltage probe is required to measure high
voltages to the ionizer and collector circuits to the
unit. As an accessory, a high voltage probe can be
purchased for a multimeter.
STEP 1
PROBLEM: Indicator light is flashing
or not illuminated
PROCEDURE: Checking the power pack
The MSH should be placed "off", open power pack
enclosure lid door, and disconnect both high voltage
wires (Ionizer #8 and Collector #7) from the power
pack. the high voltage wires should carefully be
placed away from the ionizer and collector cell power
pack connectors, eliminating the high voltage wires
from contacting the power pack connectors. Place the
MSH "on"; the indicator light should be illuminated.
if the indicator light is illuminated the power pack is
operational, proceed to step (2). If the indicator light is
flashing (high voltage wires #8 and #7 disconnected
from the power pack), the power pack requires
replacement. if the indicator light is not illuminated
proceed with following until the problem is corrected.
Verify there is 120 VAC to the power pack, place the
MSH "off" and remove the 120 VAC wires from the
power pack terminals 5 and 6. connect the multimeter
to the two 120 VAC wires and place the MSH "on". If
120 VAC is not present there are problems upstream
from the power pack, refer to wiring diagram.
STEP 2
PROBLEM: Indicator light is flashing.
PROCEDURE: Checking the unicell
components
Do not proceed with step (2) until step (1) is completed.
the following steps are the process of elimination in
identifying the problems to the ionizer/collector cell
circuit.
there are four conditions which could occur with a
flashing indicator light.
1. the high voltages are below specifications to the
ionizer and or the collector cell circuit(s).
2. there is an arcing condition to the ionizer and or
collector cell circuit(s).
3. there is a dead short condition.
4. the power pack has failed. refer to step 1.
Power pack enclosure(s) service voltage is
120VAC or 230VAC. This can be lethal. Voltage
(120 VAC) or (230 VAC) is present within the
power pack enclosure.
!
WA R N I N G
Summary of Contents for CLARCOR SMOG-HOG MSH Series
Page 1: ...Industrial Electrostatic Air Cleaner l SMOG HOG MSH Model OWNER S MANUAL ...
Page 14: ...10 Revised 03 15 SMOG HOG Electronic Air Cleaner Figure 1 Unit Components ...
Page 17: ...13 Revised 03 15 SMOG HOG Electronic Air Cleaner MSH 05 ...
Page 18: ...14 Revised 03 15 SMOG HOG Electronic Air Cleaner MSH 05 M ...
Page 19: ...15 Revised 03 15 SMOG HOG Electronic Air Cleaner MSH 11 ...
Page 20: ...16 Revised 03 15 SMOG HOG Electronic Air Cleaner MSH 11 M ...
Page 21: ...17 Revised 03 15 SMOG HOG Electronic Air Cleaner MSH 11 w Optional ON OFF Switch ...
