Thermal Arc ULTIMA 150, Руководство по обслуживанию

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Manual 0-2503 19 SECTION 3: SERVICE TROUBLESHOOTING
4. Faulty Transformer
If the Gas Solenoids and Logic PC Board are okay,
there may not be 120 VAC coming into the Logic
PC Board.
a. Measure from J1-8 on Logic PC Board to pri-
mary power ON/OFF switch output terminal
(L2 wire #2). Voltage should be 120 VAC.
If proper voltage is not present, replace Trans-
former.
Once the problem has been identified and corrected, make
sure the primary power is disconnected and the Primary
Power ON/OFF Switch is placed in the OFF position and
then reconnect J3 to Logic PC Board to enable DC output
circuit. Repeat steps in Section 3.06, Basic Functions to
ensure the system is fully functional.
3.10 Coolant Indicator Light Status
Under normal operating conditions, the COOLANT In-
dicator Light should be green once the unit is turned on.
A red COOLANT light or a red-green COOLANT light
indicates a possible problem or problems.
NOTE
When starting the system for the first time or if
torch has been disconnected, there will be a 3-5 sec-
ond delay before the light is green to allow time for
the coolant to circulate through the system to the
Flow Switch. It may be necessary to turn the sys-
tem on and off several times to allow for complete
coolant circulation and extraction of any entrapped
air.
• Disconnect the primary power and place the Pri-
mary Power ON/OFF Switch to the OFF position.
• Unplug J3 from Logic PC Board to disable DC out-
put circuit.
• Connect the primary power and place the Primary
Power ON/OFF Switch to the ON position.
A. COOLANT Light Red (not blinking).
1. Coolant is Contaminated (conductive).
a. Disconnect the primary power and place the
Primary Power ON/OFF Switch to the OFF
position.
b. Flush coolant from system and replace with
Thermal Arc® Coolant. To flush system, re-
move hose fitting at the filter end of the Cool-
ant Filter Assembly and drain into an appro-
priate container. There is no need to turn on
pump as gravity flow will drain the reservoir.
Fill reservoir not less than 2 inches from top.
c. Check Deionizer Bag in reservoir. If completely
straw-colored, replace bag. (Refer to Section
5, Parts Lists for parts information.)
d. Connect the primary power and place the Pri-
mary Power ON/OFF Switch to the ON posi-
tion. COOLANT indicator light should be
green. If not, check Conductivity Sensor.
2. Faulty Conductivity Sensor
a. Disconnect the primary power and place the
Primary Power ON/OFF Switch to the OFF
position.
b. Remove wire from Conductivity Sensor on side
of Coolant Reservoir (wires 3 & 4).
In-Line
Filter Assembly
Conductivity
Sensor
Flow Switch
Assembly
Coolant
Reservoir
Wires (3&4)
Hose
A-01099
Figure 3-5 In-Line Filter Assembly
c. Replace Conductivity Sensor per procedures
in 4.06, Conductivity Sensor Assembly Re-
placement.
d. Reconnect wires to Conductivity Sensor.
e. Connect the primary power and place the Pri-
mary Power ON/OFF Switch to the ON posi-
tion. COOLANT indicator light should be
green.