Hydraulic Overload; Drive Alarms - Dukane VWA-4300 User Manual

4. Verify that the heat exchanger is cooling properly,
and the hydraulic fluid is below 150°F.
5. Check for any leaking hydraulic fluid from the hose
fittings on the floor of the cabinet and underneath the
welder.
If the cause of the overload is determined to be one of
the five items above, do not operate the machine until the
problem has been corrected. Do not increase the trip point
on the circuit breaker as this may burn out the pump mo-
tor. The motor is designed to draw 4.3 Amps at 480 VAC
when delivering its rated 3 HP.

Drive Alarms

If you get a drive related alarm message, check that the
tooling is securely attached to the upper frame using all
the bolts and torqued to specifications. Check that the
weight of the upper tooling is within the specified range:
Model 4300 20 – 55 lbs
Model 4500 45 – 90 lbs
Model 4700 90 – 150 lbs
Model 4900 110 – 200 lbs (50 - 91 kg)
Refer to Table 6- II Alarms and Messages, Page 85,
Hydraulic Overload. The four possible error messages
relating to a drive overload are:
1. CHECK FREQUENCY INVERTER
2. FREQUENCY ERROR
3. CURRENT OVERLOAD
4. VOLTAGE OVERLOAD
If the upper tooling is in the correct weight range and is
torqued to the proper values, you may need to increase
the voltage, current or feedback delay.
Increase the value that corresponds to the error message.
We strongly recommend that you consult Dukane prior
to changing these values.
Refer to Overload Settings, and Figure 6 - 39, Page 79.
Dukane Manual Part No. 403-592-00
Continued from Previous Page
(9 - 25 kg)
(20 - 41 kg)
(41 - 68 kg)
Hydraulic Pump Motor Circuit Breaker
Figure 10 - 7
NOTE
See Figure 10 - 2 for fuses and disconnect
location.
Section 10 - Troubleshooting
Test Button
Page 125