Fire pump equipment safety should not be overlooked fault diagnosis and elimination measures
First, the fire pump equipment no liquid to provide, lack of liquid supply or lack of pressure
1. Fire pump equipment is not filled with water or is not properly vented
Remedy: Check that the pump housing and inlet lines are completely filled with liquid.
2. Fire pump equipment is too slow
Elimination measures: Check the motor wiring is correct, the voltage is normal or the turbine steam pressure is normal.
3. Fire pump equipment system head too high
Elimination measures: Check the system head (especially the friction loss).
4. Fire pump suction device is too high
Elimination measures: Check the existing net head (inlet pipe is too small or too long will cause great friction loss).
Impeller or pipeline blocked
Remedy: Check for obstructions.
6. fire pump equipment rotation direction is wrong
Elimination measures: Check the direction of rotation.
7. There is a leak in the air pump or inlet line to the fire pump equipment
Remedy: Check inlet piping for cavitation and / or air leaks.
8. Fire pump equipment stuffing box packing or seal wear, so that the air leaked into the pump housing
Elimination measures: Check the packing or seal and replace as needed, check the lubrication is normal.
9. Fire pump equipment pumping hot or volatile liquid suction head is not enough
Elimination measures: Increase the suction head, consult the manufacturer.
10. Fire pump equipment at the end of the valve is too small
Elimination measures: Install the correct size of the bottom valve.
11. Fire pump equipment bottom valve or inlet pipe immersion depth is not enough
Elimination measures: Ask the fire pump equipment manufacturer for the correct immersion depth. Eliminate eddies with baffles.
12. Fire pump equipment impeller clearance is too large
Elimination measures: check the gap is correct.
13. Fire pump equipment impeller damage
Elimination measures: Check the impeller, according to the requirements of replacement.
14. Fire pump equipment impeller diameter is too small
Remedy: Consult manufacturer for correct impeller diameter.
15. Fire pump equipment pressure gauge position is not correct
Elimination measures: check the location is correct, check the outlet nozzle or pipe.
Second, the fire pump equipment will be shut down for a while
1. Fire pump suction device is too high
Elimination measures: Check the existing net head (inlet pipe is too small or too long will cause great friction loss).
2. Fire pump equipment impeller or pipeline blocked
Remedy: Check for obstructions.
3. Fire pump equipment generates air or inlet line leaks
Remedy: Check inlet piping for cavitation and / or air leaks.
4. Fire pump equipment stuffing box packing or seal wear, so that air leakage into the pump casing
Remedy: Check packing or seal and replace as required. Check the lubrication is normal.
5. Fire pump equipment pumping hot or volatile liquid suction head is not enough
Elimination measures: Increase the suction head, consult the manufacturer.
6. Fire pump equipment at the end of the valve or inlet pipe immersion depth is not enough
Elimination measures: Fire pump equipment manufacturers consult the correct depth of immersion, with the baffle to eliminate eddy currents.
7. Fire pump equipment pump shell gasket damage
Remedy: Inspect the gasket and replace as required.
Third, fire pump equipment power consumption is too large
Fire pump equipment rotating direction wrong
Elimination measures: Check the direction of rotation.
2. Fire pump equipment impeller damage
Elimination measures: Check the impeller, according to the requirements of replacement.
3. Fire pump equipment rotating parts bite death
Elimination measures: Check the internal wear parts of the gap is normal.
4. Fire pump equipment shaft bending
Remedy: Align the shaft or replace as required.
5. Fire pump equipment is too fast
Remedy: Check the winding voltage of the motor or the steam pressure delivered to the turbine.
6. Fire pump equipment head below the rated value. Pump too much liquid
Elimination measures: Fire pump equipment manufacturers consulting. Install throttle valve, cut impeller.
7. Fire pump equipment fluid heavier than expected
Elimination measures: Check the proportion and viscosity.
8. Fire pump equipment packing box is not properly filled (insufficient packing, not properly inserted or run together, the packing is too tight)
Elimination measures: Check the packing, packing stuffing.
9. Fire pump equipment bearing lubrication is not correct or bearing wear
Remedy: Check and replace as required.
10. Fire pump equipment wear ring between the running gap is not correct
Elimination measures: check the gap is correct. Replace pump housing and / or impeller wear rings as required.
11. Fire pump equipment, pump casing stress is too large
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