Belshaw Adamatic INSIDER Ventless Donut System - Manual (Page 46)

Belshaw Bros., Inc. • www.belshaw.com • Phone 206-322-5474 • Fax 206-322-5425
20 MN-1853EN Insider TS
Tools required:
• Two (2) screwdrivers. 8” blade type with
insulated handle.
• Needle nose pliers
• Volt/Ohm meter (if available)
• High voltage meter to 10,000 volts DC plus
(if available).
These are two areas in which the majority of
service problems originate:
• The ionizing-collecting cell
• The power supply
Electrical Trouble
CAUTION
Exercise usual precautions when
working with high voltage. When circuit
has been de-energized always discharge
any residual current in the secondary
with an insulated handle screwdriver.
Always ground power supply and
ionizing-collecting cell when bench
testing.
Ionizing-Collecting Cell
The cell is electrically energized through a
contact terminal located at the top center of the
cell. The ionizing wires and every other
collector plate are electrically charged while each
interleaving plate is ground. Most trouble in the
cell can be readily detected visually.
Power Supply Check (without high volt
meter)
Problem Areas Corrections
Excessive dirt build up Wash
Large pieces of foreign
matter lodged between
plates Remove
Very dirty insulators. Clean
Broken ionizing wires Remove all pieces of
broken wires and
replace
Excessively bent or
misaligned components
due to mishandling Straighten or replace
Externally broken or
cracked insulators Replace
System Check
A simple system check can be made by drawing
an arc as follows:
Remove pre-filter and cell.
Remove pre-filter from cell.
Re-install cell without pre-filter.
Use screwdriver to energize safety switch. If
high volt meter is not available proceed as
follows:
Use an insulated screwdriver to draw an arc
between extended ground plate an ionizing wire.
A sharp electrical arc of approximately 1/4”
should be observed. This indicated proper cell
operation. If weak arc or no arc is observed,
follow cell and power supply checkout.
If using high volt meter, voltage should read
between 5.9 – 6.5 kilovolts. If voltage is below 6
kilovolts or no output at all, the problem lies in
either the cells or power supply. See Electronic
Air Cleaner - Troublechart, page 24.