Weldforce 155
M &
175
MST
© Weldclass 2020 | E.&O.E.
13
4.5
Error/Over Temperature Indicator Light
Error/Over Temperature Indicator Light illuminates yellow to indicate that welding current has stopped
for one of the following reasons:
•
Thermal Protection:
when duty cycle is exceeded and thermal protection is activated. When
thermal protection is activated, welding output will be disabled until machines cools
sufficiently and overload indicator lamp goes out.
•
Power Supply Voltage Protection:
the machine will stop functioning if the input power
supply voltage exceeds unsafe limits (over 15%).
•
Short Circuit Protection:
automatically shuts down the welding machine if there is short
circuit in the welding circuit (e.g. torch touch the job or stick electrode sticks to the job).
This may also activate if there are electronic circuit failure issues.
5
POWER SUPPLY
5.1
Electrical Connection
The Weldforce 155M & 175MST machines are designed to operate on a 10A 240V AC power supply.
5.2
Extension Leads
If an extension cord must be used, it should be minimum cable core size 2.0mm
2
for length of up to
10m, or minimum 2.5mm
2
for lengths over 10m.
Using extension leads of over 50m is not recommended.
5.3
Generator Use
This machine is designed with generator use in mind and incorporates wide voltage tolerance and
intelligent voltage sensing technology to provide maximum protection from power fluctuations that
can occur with motor generators.
5.3.1
Generator Size
Generator size should be not less than 7kva. A 7kVa generator may not provide enough power to
enable full output and duty of this welder. However, it should provide sufficient power to enable
the majority of applications for which this machine was designed.
To enable full output and duty cycle of this welder a minimum recommended generator size is
minimum 10kVa.
Figure 6
