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水ポンプ Armstrong 4600 HSC seriesのPDF 据付・取扱説明書をオンラインで閲覧またはダウンロードできます。Armstrong 4600 HSC series 16 ページ。 Horizontal split case fire pumps. 12x8x18f

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i n s ta l l at i o n &

o p e r at i n g i n s t r u c t i o n s

5.0 trouble shooting

causes

pump will not start

Faulty electrical circuit

Stuffing box too tight or packing improperly installed

Impeller locked

Excess bearing friction due to wear and dirt

pump is noisy or vibrates

Stuffing box too tight or packing improperly installed

Impeller obstructed

Excess bearing friction due to wear and dirt

Foundation not rigid

no water discharge

Air pocket or air leakage in suction line

Suction connection obstructed

Impeller obstructed

Pump not primed

discharge pressure too low

Air leakage in suction line

Suction connection obstructed

Stuffing box too tight or packing improperly installed

Water seal or pipe to seal obstructed or air leak into pump through

stuffing boxes

Impeller obstructed

Speed too low

Wrong direction of rotation

Rated motor voltage different from line voltage i.e., 220 or 440 volt

motor on 208 or 416 volt line

pump will not stop

* Faulty electrical circuit

Run period timer defective

Pressure too low

Horizontal split case

fire pumps

remedy

• Make sure both circuit breaker and disconnect switch are in the on position

• If the circuit breaker trips when the pump tries to start check horsepower and

• Ensure that the pressure switch is working properly and is responding to changes

• Loosen gland swing bolts and remove stuffing box gland halves; replace packing

• Remove obstruction

• Remove bearings and clean, lubricate, or replace as necessary

• Loosen gland swing bolts and remove stuffing box gland halves; replace packing

• Pressures fall off rapidly when an attempt is made to draw a large amount of

• Remove bearings and clean, lubricate, or replace as necessary

• Tighten foundation bolts or replace foundation if necessary

• Uncover suction pipe and locate and re-arrange

• Examine suction intake, screen, and suction pipe and remove obstruction

• Pressures fall off rapidly when an attempt is made to draw a large amount of

• First warning is a change in pitch of the sound of the driver; shut down the pump

• Uncover suction pipe and locate and re-arrange

• Examine suction intake, screen, and suction pipe and remove obstruction

• Loosen gland swing bolts and remove stuffing box gland halves; replace packing

• Loosen gland swing bolt and remove stuffing box gland halves along with the

• Clean the water passage to and in the water seal-ring. Replace water seal-ring,

• Pressures fall off rapidly when an attempt is made to draw a large amount of

• Check that rated motor speed corresponds to rated speed of pump, voltage is

• With polyphase electric motor drive two wires must be reversed; where two

• Obtain motor of correct rated voltage or larger size motor

• Is the pressure switch inside the starter properly piped up to the water system?

• Is the stop valve in the piping to the pressure switch open?

• Check that pressure switch is working properly by disconnecting one of the pres-

• Ensure that pressure switch connection lines have been flushed to clear dirt in

• Make sure that pressure switch set point is correct according to suction and

• Change manual start handle to automatic

• Remove jumper if applicable

• Verify pressure switch setting compared to system pressure

voltage specified on the schematic and wiring diagram inside the starter door

with the pump motor nameplate

in pressure

water, remove obstruction from impeller

water-seal ring and packing.

packing gland and packing in accordance with manufacturer's instructions

water, remove obstruction from impeller

correct, and starting equipment is operating properly

sources of electrical current are available, the direction of rotation produced by

each should be checked

(system side)

sure switch leads to simulate open contact position

piping

working pressure