Armstrong ASTRO 280CI Installation And Operating Instructions Manual - Page 7
Browse online or download pdf Installation And Operating Instructions Manual for Water Pump Armstrong ASTRO 280CI. Armstrong ASTRO 280CI 8 pages. 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
7