b.On units equipped with conventional wet or dry charged batteries with removable vent caps, check theelectrolyte level frequently. Add clean, mineral-free or distilled water to bring the electrolyte in each cellup to the level indicator.4-9.6IdleControlCircuitProtection.4-9.6.1The idle control printed circuit board and the throttle solenoid are protected by an automatic reset circuitbreaker CB1 located behind the right side panel.4-9.6.2Normally, this circuit breaker should not trip. However, if an arc is struck or the AUTO IDLE switch is placedin the OFF position after the throttle solenoid has deenergized and the engine is slowing down, CB1 may trip. If thisoccurs, wait approximately one minute before resuming operation.4-9.7BrushesandSlipRings. (Figure 4-7) - Brush life is very good under normal operating conditions. Thebrushes and slip rings should be inspected every six months or whenever excitation voltage is lost. Check for cleanlinessof the slip rings and freedom of motion of the brushes. If the welding generator has been operating under extremelydusty or dirty conditions, increase the frequence of inspection.a.Under normal use the slip rings will discolor to a dark brown. If a buildup of brush material is noted, itmay be necessary to clean the slip rings. Use a 3/0 or finer sandpaper followed by a crocus cloth. Never use emerycloth as part of the emery will embed itself into the rings and in turn destroy the carbon brushes.b.Replace the brushes if they become chipped or broken or if less than 1/4 in. (6.4mm) of fresh material isleft.Figure 4-7. Brush Replacement4-9.8Engine Speed Adjustments (Figure 4-8). The engine speeds have been factory adjusted and will not requirefrequent readjustment. After tuning the engine, check the speeds with a tachometer. With no load applied, the powerspeed should be 1860 rpm for 60 Hz. Models and the weld speed 3000 rpm. If necessary adjust the speeds asdescribed following.4-24
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
