Hypertherm Powermax600 Operator Manual - Manual (Page 54)

MAINTENANCE AND PARTS
10-99
powermax 600 Operator Manual 5-11
Problem Cause / Solution
1. The ON/OFF power switch is set to I (ON),
but the fan does not operate and the
POWER ON lamp is not illuminated.
1.1 The power cord is not plugged into the power
receptacle.
Plug the power cord into the receptacle.
1.2 The disconnect power switch is not set to ON or
there is no power available to the disconnect power
switch box.
Turn on the power at the main power panel or at the
disconnect power switch box.
2. The POWER ON lamp is illuminated
and the LOW GAS PRESSURE lamp is
illuminated.
2.1 The gas supply is turned OFF or not connected to
the power supply.
Check that the gas is turned on and is connected to the
power supply.
2.2 The incoming gas pressure is too low.
Set incoming gas pressure to 90-120 psi / 6.2-8.3 bar.
Check that there are no leaks in the gas supply line.
3. The POWER ON lamp is illuminated
and the LOW LINE VOLTAGE lamp is
illuminated.
3.1 Line voltage is too low or a phase is missing.
The following table lists the operating range
of the Powermax600 power supplies. Have an electrical
technician check incoming power.
5. The POWER ON lamp is illuminated and the
HIGH TEMPerature lamp is illuminated.
5.1 One of the internal thermostat switches has opened
due to overheating.
Leave the power supply on to allow the fan
to cool the power supply.
4. The power supply shuts off after you turn it
on (208-240 or 230 volt unit only).
4.1 The line voltage is too high.
See table above. Have an electrical
technician check incoming power.
Note: To avoid performance deterioration, input
voltage should be within 10% of the
specified system line voltage.
208 Low Line Conditions: Symptoms include
difficulty maintaining pilot arc or cutting thicker
material. System performance can be improved
by reducing output setting or by using non-
shielded consumables.
System
Lower Limit Line Voltage Upper Limit
180 VAC 208-240 VAC 276 VAC
189 VAC 230 VAC 270 VAC
328 VAC 400 VAC 470 VAC
408 VAC 480 VAC 552 VAC