Warren Rupp Troubleshooting Guide
Contents
1. seat is worn or needs adjusting Disassemble and inspect main air distribution valve pilot valve and pilot valve actuators Refer to Air Valve Servicing section of the service manual Check for clogged discharge or closed valve before reassembly Install flexible connectors and Warren Rupp Tranquilizer Surge suppressor Remove muffler screen clean or de ice and re install Refer to Air Exhaust section of the service manual for alternative piping recommendations Disassemble pump chambers Inspect for diaphragm rupture or loose diaphragm plate assembly Refer to the Diaphragm Replacement section of the service manual Visually inspect all suction side gaskets and pipe connections Disassemble the wet end of the pump and manually dislodge obstruction in the check valve pocket Refer to the service manual for disassembly procedure Inspect check valves and seats for wear and proper setting Replace if necessary Refer to the service manual for disassembly procedure Suction line is blocked Discharge line is blocked Pump chamber is blocked Entrained air or vapor lock in chamber s vv dv Remove or flush obstruction Check and clear all suction screens or strainers Check for inadvertently closed discharge line valves Disassemble and inspect wetted chambers Remove or flush any obstructions Refer to the service manual for disassembly Purge chambers through tapped chamber ven2. Warren Rupp Troubleshooting Guide THE PROBLEM Pump cycles flow Pump cycles No flow Pump will not cycle unsatisfactory Unbalanced cycling Vibration a p System Pump System Pump System Pump System Pump System Pump m suction f f Excessive flooded suction d System head exceeds air supply d pressure Air supply pressure or d volume exceeds system hd suction line Yd Restrictive or undersize airline Actions to Take For lifts exceeding 20 of liquid filling the chambers with liquid will prime the pump in most cases For flooded conditions exceeding 10 of liquid install a back pressure device Refer to Warren Rupp Technical Bulletin 41R Increase the inlet air pressure to the pump Pump is designed for 1 1 pressure ratio at zero flow Does not apply to models EH2 and SH2 Decrease inlet air press and vol to the pump Pump is cavitating the fluid by fast cycling Refer to Head Cap Curve on data sheet for your model pump Meet or exceed pump connections Refer to the dimension drawing or data sheet for your model pump Install a larger air line and connection Refer to the Air Inlet section of the service manual for recommendations Check ESADS air distribution system Rigid piping Blocked air exhaust muffler Pumped fluid in air exhaust muffler Suction side air leakage or air in product Check valve obstructed Check valve and or
3. t plugs Purging the chambers of air can be dangerous Call WR Tech services Dept for specific procedure Top ported discharge available on some models can also help
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