TLW-300SS—WELDER OPERATING INSTRUCTIONS

Duty Cycle

The welder is rated at 100% duty cycle at 280 amps. However, the duty cycle depends upon the welding current. Select the appropriate duty cycle from Table 13 to prevent overload.

Table 13. Duty Cycle

Duty Cycle (%)

100

80

 

 

 

Current (Amps)

280 or less

300

 

 

 

CAUTION :

Always wear welding shield with correct filter shade when welding.

FIVE ESSENTIALS FOR PROPER

WELDING PROCEDURES

Besides the steady sizzling sound that a correct arc produces, the shape of the molten pool and the movement of the metal at the rear of the pool serve as a guide in checking weld quality.

In a correctly made deposit, the ripples produced on the bead will be uniform and the bead will be smooth, with no overlap or undercut.

1. Correct Electrode Size

The correct choice of electrode size involves consideration of a variety of factors. Such as the type, position, and preparation of the joint, the ability of the electrode to carry high current values without injury to the weld metal or loss of deposition efficiency. The mass of work metal and its ability to maintain its original properties after welding, the characteristics of the assembly with reference to effect of stresses set up by heat application, the practicability of heat treatment before and/or after welding, the specific requirements as to welding quality and the cost of achieving the desired results.

2. Correct Current

If current on equipment is too high or too low, you are certain to be disappointed in your weld. If too high, the electrode melts too fast and your molten pool is large and irregular. If too low, there is not enough heat to melt the base metal and your molten pool will be too small, will pile up, and look irregular.

3. Correct Arc Length

If the arc is too long or voltage too high the metal melts off the electrode in large globules which wobble from side to side as the arc wavers, giving a wide, spattered and irregular bead– with poor fusion between original metal and deposited metal.

If the arc is too short or voltage too low, there is not enough heat to melt the base metal properly and the electrode quite often sticks to the work. This gives a high, uneven bead, having irregular ripples and poor fusion.

4. Correct Travel Speed

When your speed is too fast: your pool does not last long enough, impurities and gas is locked in. The bead is narrow and ripples pointed. When speed is too slow: the metal piles up, the bead is high and wide, with a rather straight ripple.

5. Correct Electrode Angle

The electrode angle is of particular importance in fillet welding and deep groove welding. Generally speaking, when making a filet weld, the electrode should be held so that it bisects the angle between the plates and is perpendicular to the line of weld. If under cut occurs in the vertical member lowers the angle of the arc and directs the arc toward the vertical member.

PAGE 30 — TLW-300SS WELDER/AC GENERATOR — OPERATION AND PARTS MANUAL — REV. #2 (04/07/10)

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Multiquip operation manual TLW-300SS-WELDER Operating Instructions, Duty Cycle
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TLW-300SS specifications

The Multiquip TLW-300SS is a powerful and highly efficient water heater designed for a variety of applications in both construction and industrial settings. Known for its robust engineering and advanced technology, the TLW-300SS provides reliable hot water on demand, ensuring optimal performance even in the most challenging environments.

One of the main features of the TLW-300SS is its impressive heating capacity. With a substantial output of 300,000 BTUs, this water heater can quickly heat large volumes of water, making it ideal for tasks such as concrete curing, equipment washing, and site sanitation. The unit is equipped with a direct-fired stainless steel heat exchanger that ensures efficient heat transfer while minimizing energy consumption.

The TLW-300SS boasts dual-fuel capability, allowing users to operate the unit on either propane or natural gas. This versatility provides flexibility in fuel choices, enhancing usability in various locations and conditions. Furthermore, this water heater is designed with user-friendly controls, featuring a digital thermostat that allows precise temperature settings. This feature ensures consistent water temperatures, which is crucial for applications requiring specific heat levels.

Safety is a top priority with the TLW-300SS. The unit is equipped with various safety features, including an automatic flame failure shutdown system that prevents potential hazards by ceasing operation if the flame is extinguished unexpectedly. Additionally, it has a pressure relief valve to mitigate risks associated with excessive pressure buildup within the system.

Durability and maintenance are also significant considerations in the design of the TLW-300SS. Constructed from high-quality stainless steel, this unit resists corrosion and wear, making it suitable for both indoor and outdoor use. Easy access to key components simplifies maintenance and servicing, helping ensure that the unit operates at peak efficiency over its lifespan.

In terms of transportability, the TLW-300SS is built with a robust frame and towable design, allowing for easy mobility across job sites. Its compact size does not compromise its performance, making it able to fit into tight spaces while still delivering powerful heating capabilities.

In conclusion, the Multiquip TLW-300SS stands out in the market as a versatile, efficient, and safe water heating solution. Its combination of high heat output, dual-fuel operation, advanced safety features, and durable construction makes it a reliable choice for professionals in need of dependable hot water solutions in various work environments.
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