ALTEC AIR, LLC
P550W Series Air Dryers User’s Guide
Page 57 of 98
P011658 – Rev. S
If any of the voltage measurements are different than indicated above, the Control
Board is defective and should be replaced. See sections 11.1 for part detail and
11.5 for ordering information.
9.3.5
Close Panel.
9.4 Measuring Incoming Voltage
9.4.1
Open Panel (see section 0).
9.4.2
Locate the Incoming
POWER
connector inside
the Dryer.
9.4.3
Use a Voltmeter to measure
the voltage (inside Dryer):
9.4.3.1
Place the probes
between the Power
connector and terminal
insulation so that they
touch the metal contacts
for BLACK (BROWN)
wire and WHITE (BLUE) wire.
The voltage should measure
110 - 125 VAC
for the P550W, P550WH and
P550WLP or
208 - 253 VAC
for the P552W, P552WH and P552WLP.
WARNING!
Extreme care should be exercised to avoid contact with live
electrical circuits.
It is highly recommended that you remove all
jewelry before performing any procedures.
