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水ポンプ Armstrong ASTRO 220SSU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 ASTRO 220SSU 8 ページ。 2, 3-speed circulators

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fault

possible cause

Pump stopped,

Power supply interrupted

no power

Fuse tripped or circuit breaker opened

Pump stopped, power

Thermal switch has actuated

supply present

Pump does not start

Noises in system, ther-

Pump output too high

mostatic valves/pipes

Noisy pump

Air in pump

Cavitation sounds

Resonance noises

Knocking from foreign bodies in the

pump/or on valve

Astro 2, 3-speed

circulator models

remedy

• Check the power supply. Attach external power control

if necessary.

• Repair short-circuited wire. Repair loose contact.

• Check for the properly rated fuse.

• Check pump motor and lead.

• Reduce ambient temperature.

• Clean blocked or slow rotating pumps.

• Open air vent screw and unlock shaft. Clean pump.

• Increase speed/set point.

• Replace pump.

• Reduce speed level.

• Open bypass/valve.

• Install circuit balancing valves to adjust ﬂ ow.

• Check pump selection/system. Adjust pump. Check

system /gauges.

• Replace pump.

• Open bleed screw and vent pump. Vent and top up

system with water.

• Check expansion tank.

• Install air separator.

• Increase inlet pressure.

• Reduce temperature.

• Throttle back pump.

• Reduce speed.

• Use sound insulation material between the pump

and surface to reduce resonance noise. Install

expansion joints. Install ﬁ xture to change system's

natural frequency.

• Adjusts pump speed.

• Replace pump/motor.

• Clean impeller.

• Adjust valve pressure. Adjust valve spring.

• Turn valve around if installed incorrectly.

• Replace pump.

i n sta l la tio n &

o p er at ing i nstr ucti o ns