EVA Series Installation Operation and Maintenance Manual

EVAPipe HammerMotor Overheatingor NoisyOil Level Drops• Suction or discharge valve not open completely - Ensure valves are completelyopen.• High velocity in suction or discharge line - 1. Increase pipe ID. 2. Calculate NPSH• Insufficient NPSH (Starved Suction) - Calculate NPSH.• Motor speed wrong - Check motor tag vs. pump tag.• Motor operating at wrong frequency - Check motor tag vs. pump tag.• Punctured Diaphragm - 1. DISASSEMBLE PUMP 2. Replace Diaphragm.3. Thoroughly check for gear box contamination or damage.• Low oil level - Fill gear box and find leak path.• Gear box oil contaminated - 1. Change oil. 2. Replace filter. 3. Find possible contaminationpath.• Worn gearing or bearings. - 1. Replace gears or bearings. 2. Locate cause of possibledamage.• Leaking gaskets on gear box - 1. Replace gaskets. 2. Look for possible damage.• Punctured Diaphragm - 1. DISASSEMBLE PUMP 2. Replace Diaphragm.3. Thoroughly check for gear box contamination or damage.• Leaking gaskets on gear box - 1. Replace gaskets. 2. Look for possible damage.33