Votes - 2, Average rating: 3.5
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manual abstract
(check, replace or reset fuse) 2. Pump under pressure. (reduce pressure setting by turning pressure control knob counter-clockwise, trigger gun to relieve pressure). 3. Too light or too long of extension cord. (replace with correct cord. If distance greater than 100 feet, obtain and install extra length of H.E.R.O. airless spray hose). 4. Unit's thermal overload switch has opened. (determine and correct cause of overheating). ELECTRIC MOTOR STALLS/QUITS 1. See "Electric Motor Won't Start/Run 2. Drive belt is loose. (tighten drive belts by evenly turning belt tension bolts on either side of motor clockwise. Loose belts generally emit loud squealing noises). 3. Unit primes, builds pressure, but pump “seizes” or “stops” when gun is triggered. ( loose belts, tighten). TOTAL LOSS OF PRESSURE, DIAPHRAGM MOVEMENT CANNOT BE STOPPED OR ALTERED. (SEE "DIAPHRAGM TEST") 1. Paint too thick. (thin paint according to manufacturer's recommendations). 2. Intake ball (ref# 13) worn or jammed opened/closed. (remove intake endcap (ref# 11) and cage (ref# 14). Inspect intake ball, (ref# 13), to ensure it is free, round, and has no nicks or cuts. Inspect ball cage and cage spring for damage or wear. Inspect for foreign material jamming ball. Replace parts as needed). 3. Intake seat loose/bypassing. (remove intake endcap, (ref# 11) and ball cage, (ref# 14). Check seat to ensure it is tightly secured in endcap block. Remove intake elbow (ref# 8) and inspect block from the inbound direction. Look for any washout or erosion. Removal of seat may be required for positive identification of washout or erosion. 4. Outgo valve ball (ref# 26) worn or jammed. (remove outgo valve, (ref# 22). Invert valve and unthread outgo valve upper, (ref# 29), from outgo lower, (ref# 23). Remove crush washer, (ref# 24), outgo seat, (ref# 25), outgo ball, (ref# 26), outgo cage, (ref# 27), outgo spring, (ref# 28), from outgo upper tunnel. Inspect outgo ball to ensure that it is round and free of nicks or cuts. Inspect for foreign material jamming ball. Inspect ball and cage for wear. Replace parts as needed). 5. Outgo valve (ref# 22) incorrectly assembled. (disassemble and reassemble outgo valve, closely following detailed instructions on page 24). TOTAL LOSS OF PRESSURE, DIAPHRAGM HAS NO MOVEMENT OR MOVEMENT CAN BE STOPPED. (SEE "DIAPHRAGM TEST") 1. Hydraulic intake valve (ref# 62) defective. (remove hydraulic feed line, (ref# 63), from hydraulic intake valve. Plug hydraulic feed line so hydraulic fluid does not drain. Remove hydraulic intake valve from elbow, (ref# 61). Check hydraulic intake valve to ensure that it flows in one way only, into the cylinder. Replace if necessary. NOTE; Item cannot be repaired ). H.E.R.O. INDUSTRIES 18 300S / 300SL LEGEND Owner’s Manual TROUBLESHOOTING SITUATION POSSIBLE CAUSE (REMEDY) TOTAL LOSS OF PRESSURE, DIAPHRAGM HAS NO MOVEMENT OR MOVEMENT CAN BE STOPPED...CONTINUED. 2. Air lock created on hydraulic side of pump. (air entering hydraulic side due to loose hydraulic feed line fittings, (ref# 63), punctured hydraulic feed line, poor seal at hydraulic intake valve, (ref# 62), or elbow, (ref# 61). Tighten hydraulic feed line, test for leaks, or apply Teflon tape or pipe sealant on fittings. Purge air as per detailed instructions below). 3. Pressure control valve ball (ref# 87) worn out/jammed. (remove hydraulic return line, (ref# 72), from pressure control valve fitting, (ref# 81). Remove pressure control valve, (ref# 73), from elbow, (ref# 61). Disassemble pressure control valve, by removing valve seat, (ref# 86), from body, (ref# 82). Inspect for and remove foreign material. Inspect ball for wear. Install pressure control repair kit, (ref# 88), if necessary). 4. Piston rod (ref# 93) disconnected from piston (ref# 91). (reconnect piston rod following detailed instructions on page 28-29). NO PRESSURE, BLUE HYDRAULIC FLUID IN PAINT 1. Diaphragm broken. (replace with complete diaphragm, (ref# 51). Closely follow detailed instructions on page 26. NOTE; If, and only if, paint has contaminated the hydraulic side of the pump, the entire hydraulic system must be cleaned and flushed. Make sure to remove and clean the hydraulic tank screen, (ref# 66), during this process. Refill only with genuine H.E.R.O. LVO hydraulic fluid. NOTE; If lacquer has contaminated the hydraulic system, the piston seal, (ref# 90), must be changed in addition to flushing the system. Closely follow detailed instructions on page 28-29). HYDRAULIC SIDE OF PUMP HAS BEEN REPAIRED AND REASSEMBLED, DIAPHRAGM NOT MOVING "PURGING" 1. Air lock created on hydraulic side of pump. (when the hydraulic side of the pump is working there is no air in it. During repairs it is possible that air has been trapped in the hydraulic system. It must be removed or the pump will not work. To purge the air from the hydraulic system; remove the pressure control knob, (ref# 74), from the valve. Gently pull the P.C. stem, (ref# 77), out. It will pull out about 1/8". Remove the vented ...
Other models in this manual:Paint Sprayers - 300S Legend (889.35 kb)