Pulsafeeder Pulsa GLM DM7 User Manual download pdf (Page 26)

10. Troubleshooting

DIFFICULTY PROBABLE CAUSE REMEDY

Pump does not start

Faulty power source Check power source

Blown fuse, circuit breaker overload Replace - eliminate

Broken wire Locate and repair

Wired improperly Check diagram

Process piping blockage Open valves, clear other obstructions

No delivery

Motor not running

Check power source. Check wiring

diagram (see above)

Supply tank empty Fill tank

Lines clogged Clean and flush

Closed line valves Open valves

Ball check valves held open with solids Clean - inspect, flush with clear fluid

Vapor lock, cavitation Increase suction pressure

Prime lost Re-prime, check for leak

Strainer clogged

Remove and clean. Replace screen if

necessary

Stroke adjustment set at zero Increase stroke lenth setting

Low delivery

Motor speed too low

Check voltages, frequency, wiring and

terminal connections. Check

nameplate vs. Specifications

Check valves worn or dirty Clean, replace if damaged

Calibration system error Evaluate and correct

Product viscosity too high

Lower viscosity by increasing product

temperature or dilution. Increase

pump and/or piiping size

Product cavitating Increase suction pressure

Delivery gradually drops

Check valve leakage Clean, replace if damaged

Leak in suction line Locate and correct

Strainer fouled Clean or replace screen

Product change Check viscosity and other variables

Supply tank vent plugged Unplug vent

1 2 ... 21 22 23 24 25 26 27 28 29 30 31 32 33

No comments

Pulsafeeder Pulsa GLM DM7 User Manual Page 26