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You will be able to hear the fan running and feel air flow out of the back of the unit when the Cooler is operating. The Cooler will run continuously when operated without a water solenoid or valve. If a water solenoid or valve is used, the Cooler will run for a short period of time until the demand system is acti- vated and the unit shuts off.
When first starting the unit, check all of the water lines to insure that no water leaks are present. Water leak- age causes poor welding performance, poor cooling performance, low welding component life and poten- tial electrical safety hazards.
MAGNUM SYSTEM MONITOR
Always check the Magnum System Monitor before beginning to weld. The power switch light located at the top of the unit functions as the system monitor. The light will beam steadily when coolant is flowing and remain unlit when flow is stopped. The light will flicker if there is inadequate flow through the sys- tem. Be sure to check the operation periodically and each time your welding setup is changed.
Coolers are factory set to deliver coolant for the most common welding setups.
IF COOLANT STILL FLOWS, BUT THE LIGHT FLICKERS:
1.The System Monitor light indicates if there is a restriction somewhere downstream from the Cooler. Be certain that water lines and welding apparatus are not crimped, partially blocked or obstructed.
2.Uncoil the water lines to remove any kinks from the lines.
3.Unhook the input and output lines from the Cooler. Blow out the welding apparatus lines and/or con- nection lines to remove any particulate. Reattach and check flow again.
NOTE: If the system uses a water valve, check to make sure that the valve is working properly.
DEMAND SYSTEM WITH WATER VALVE OR SOLE- NOID
When linked to a water solenoid or valve, the demand system works as follows:
When the weld is complete and the trigger circuit opened, the solenoid stops water flow into the torch or the gun. The pump senses the buildup of pressure
and the internal components of the Cooler turn off. When the arc is started and the trigger and the sole- noid are enabled, the system pressure is relieved and the Cooler immediately begins to run. When a water valve or solenoid is not used, the pump does not sense any build up of pressure and the Cooler runs continuously.
CAUTION
NEVER BYPASS THE COOLER POWER SWITCH.
When using a water valve or solenoid, be certain to turn the Magnum Cooler off (“O” position) when not in use. Cooler will appear to be off in the demand system but will be supplied as long as the switch is on (“” position). Leaving the Cooler on can eventually cause the system to turn on and off when not in use (light will turn on and off) and, over time, decrease the demand system performance.
SURGE PROTECTION
To protect components from voltage spikes in power lines, an
FAN MOTOR AND FAN BLADE
The smaller Cooler
PUMP AND PUMP PRESSURE
All Cooler
MAGNUM COOLER
