Hitbox CT 520 - User Manual

Questions and Answers

D
Dan EdwardsAug 20, 2025
What to do if the fan turns, but there's no high-frequency sound and the arc welding won't start on my Hitbox Welding System?
- A
  Alexis BarryAug 20, 2025
  Here are a few things to check: * Voltage check: Use a multimeter to check the voltage of the positive and negative poles of the VH-07 plug-in of the multimeter to the MOS board. It should be around DC308V. * Auxiliary power: See if the auxiliary power supply on the MOS board has a green indicator light. If it's off, the auxiliary power supply isn't working. Look for the fault point or contact the dealer. * Connections: Check for poor connections of various patch cords in the machine. * Control circuit: There might be control circuit problems. Find the cause or contact the dealer. * Welding torch: The control line on the welding torch could be broken.
Y
yonealAug 25, 2025
Why does my Hitbox Welding System start arc with "LIFT TIG welding" but has no high frequency discharge sound?
- Q
  qsilvaAug 25, 2025
  The primary line of the arcing transformer may have poor contact with the power board; retighten it. Also, the discharge nozzle may be oxidized or too far away. Treat the surface oxide film of the discharge nozzle or adjust the distance of the discharge nozzle to 1 mm. Finally, individual components of the high-frequency arc-ignition circuit may be damaged; find the replacement.
P
Patrick NelsonAug 28, 2025
What could cause a high-frequency sound but no abnormal indicator light on my Hitbox CT 520?
- M
  Martha ClarkAug 28, 2025
  The welding gun cable could be broken. The ground wire might be broken or not connected to the welded workpiece. Also, the positive output terminal or the welding torch gas output terminal might be loose from the connection inside the machine.
E
Emily BlackburnAug 31, 2025
Why can't my Hitbox CT 520 Welding System break the oxide film when welding aluminum?
- U
  upayneAug 31, 2025
  The welding gear selection may be incorrect, or the duty cycle adjustment may be too small. It is also possible that the secondary inverter has field tube damage.
M
Matthew JenkinsSep 4, 2025
How to prevent my Hitbox CT 520's tungsten needle from burning seriously?
- D
  Daniel CordovaSep 4, 2025
  The duty cycle might be adjusted too high. Try reducing the duty cycle.
R
Rachel AndersonSep 8, 2025
What to do if the power indicator doesn't light, the fan doesn't turn, and there's no welding output from my Hitbox Welding System?
- R
  Robert BurkeSep 8, 2025
  First, check if the power switch is broken. Then, confirm that the power grid connected to the input cable has power. Finally, check if the input cable has a break.
D
Dawn GeorgeNov 11, 2025
What to do if the abnormal indicator light is on but there is no output from my Hitbox Welding System?
- R
  Regina TaylorNov 11, 2025
  If the abnormal indicator light is on and there's no output, the Hitbox Welding System may be experiencing overcurrent or overheat protection. Try turning off the machine and restarting it when the abnormal indicator light is off. For overheat protection, allow the machine to sit idle for 2-3 minutes to return to normal. If that doesn't work, unplug the power supply plug of the main transformer on the MOS board (near the fan VH-07 plug-in) and restart it. If the abnormality indicator is still on, turn off the power plug of the high-frequency pilot arc power supply (near the fan VH-03 plug-in) and turn it back on. If the abnormal indicator is still on, the individual FETs on the MOS board may be damaged. If the abnormal indicator is not lit, the step-up transformer in the high-frequency arc...
K
Kelly WilsonNov 15, 2025
Why is the power switch indicator on, but the fan doesn't turn and there's no welding output from my Hitbox CT 520?
- L
  Leslie MillerNov 15, 2025
  The issue might be due to several reasons: * Incorrect input voltage: If you've connected the Hitbox Welding System to a 380V power supply instead of 220V, the overvoltage protection circuit may have activated. Reconnect to a 220V power supply and restart. * Unstable 220V power: If the 220V power is unstable due to a long input line or grid connection, the overvoltage protection could be the cause. Try increasing the wire diameter of the grid input line or fastening the input line node. * Repeated power cycling: Continuously turning the power switch on and off in a short period can trigger the overvoltage protection. Wait 2-3 minutes before restarting. * Loose wires: The wires between the switch and the power board might be loose. Retighten them. * Relay issue: The main circuit ...

Summary

Safety Warning

Machine Description

CT Series Welding Machine Capabilities

Details the CT series machine's multi-purpose use for cutting and welding various metal types.

Inverter Technology and Efficiency

Highlights unique high-frequency inverter technology, small size, high efficiency, and cost-effectiveness.

Foot Pedal Current Control

Describes the foot pedal for adjusting current, enhancing welding efficiency and quality.

Panel Function Instruction

Button Functions

Explains the function of mode selection buttons for CUT, TIG, and MMA welding modes.

Parameter Adjustment Controls

Details parameter adjustments using arrow buttons, including pre-flow gas time and current.

Attenuation and Gas Flow Settings

Covers adjustments for current decay time and post-flow gas time after welding.

Indicator Lights and Panel Schematic

Describes overheat protection indicator and provides a schematic of the CT-520 panel components.

Installation Instruction

Ventilation and Airflow Requirements

Ensures proper ventilation by keeping air intakes clear to prevent cooling malfunctions.

Gas, Cable, and Foot Switch Connections

Instructions for connecting gas source, cables, and foot switch with proper polarity.

Power and Electrode Holder Setup

Guidelines for connecting the power line and installing the electrode holder for operation.

Operation Introduction

AC TIG Welding Procedure

Step-by-step guide for using the AC TIG welding function, including power, gas, and torch control.

DC TIG Welding Procedure

Procedure for operating the DC TIG welding function, covering power, function selection, and gas flow.

DC MMA Welding Procedure

Instructions for using the DC MMA welding function, including power, switch position, and electrode connection.

Maintenance

Cleaning and Air Pressure Guidelines

Regular dust removal with compressed air and maintaining correct air pressure.

Internal Checks and Water Protection

Checking internal circuits, connections, and preventing water ingress.

Storage and Periodic Servicing

Guidance on long-term storage and periodic maintenance tasks.

Notes Before Checking

Repair and Safety Precautions

Warning against blind experimentation and careless repair, highlighting risks of electric shock.

Precautions

Environmental Considerations

Precautions regarding dry environment, temperature, dust, and air flow for welding operations.

Operational Safety Guidelines

Safety measures including ventilation, current/voltage limits, and proper grounding.

Questions to Be Run Into During Cutting

Solder Joint Issues

Troubleshooting steps for black solder joints, covering gas flow, shielding, and air flow.

Arc Ignition and Stability Problems

Addresses difficulties in arc ignition and arc breaking, related to tungsten quality and sharpening.

Output Current Deviations

Explains how supply voltage deviations can affect output current consistency.

Troubleshooting and Fault Finding

Power Indicator and Fan Issues

Diagnoses faults related to power indicator, fan operation, and lack of welding output.

Abnormal Indicator and High-Frequency Discharge

Troubleshoots issues with abnormal indicator lights, high-frequency discharge, and arc starting.

Output and Connection Faults

Addresses faults like no output, broken cables, loose connections, and output terminal issues.

Arc Ignition and Overload Conditions

Faults related to arc ignition, overload protection, overheat protection, and inverter circuit issues.

Explosive View

Hitbox CT 520 Specifications

General

Brand	Hitbox
Model	CT 520
Category	Welding System
Language	English

Related product manuals

Hitbox ARC160D

20 pages