Checking Heater Solid State Relays - Conair Carousel Plus D Series User Manual

C h e c k i n g H e a t e r S o l i d S t a t e R e l a y s
CAUTION: Always disconnect and lock out the main power sources before making electrical
connections. Electrical connections should be made only by qualified personnel.
1
Disconnect and lockout the main power supply.
2
Open the electrical enclosure.
3
Locate the regeneration solid state relays. Refer to the wiring diagrams that came with
your dryer.
Regeneration heater
solid state relays
4
Turn power on to the machine.
5
Start the dryer.
6
Measure voltage across the high voltage connections using a voltmeter. When
relay is energized, as indicated by the LED (green) voltage should be read 0 (zero).
When relay is de-energized, LED off, full voltage should be measured across the
relay. When relay is off, if voltage reads zero, relay is bad and needs replaced. Re-
peat this procedure for each relay.
0
NOTE: Measure voltage using a voltmeter across the two high voltage connections of each
relay. (Shown here circled in red.)
OFF
O
IMPORTANT: Always refer
to the wiring diagrams that
came with your dryer to lo-
cate specific electrical com-
ponents. Illustrations in the
User Guide are intended to
be representative only.
Process heater
solid state relays
IMPORTANT: Only qualified
personnel should take
measurements on energized
equipment. Follow all local,
regional, and company
guidelines regarding safe
electrical testing proce-
dures.
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