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"ST"-SERIES STORAGE TANK CONTROLS

ST-SERIES HYDRO-PNEUMATIC PUMP CONTROLS
U.L. APPROVED & LABELED
MANY OPTIONS AVAILABLE

ST-SERIES HYDRO-PNEUMATIC PUMP CONTROL SEQUENCE OF OPERATION

The pump control panel shall be equipped with four solid state low voltage liquid level liquid level relays to automatically control the water level of the storage tank. As water is removed from the tank, the liquid level will drop until it reaches the "Lead Pump On" (third from top) electrode. The lead well pump will activate and continue to run until the liquid level reaches the "Pumps Off" (second from top) electrode, at which time the pump will cut off. The control will then alternate the lead pump. If the liquid level continues to drop and reaches the "Lag Pump On" (fourth from top) electrode, the lag pump will activate and both pumps will continue to run until the liquid level reaches the "Pumps Off" electrode again.

The panel shall be equipped with "Low Storage Level" and "High Storage Level" alarms. When the liquid level reaches the "Low Storage Level" (fifth) electrode, the audio/visual alarms will activate and be latched in until manually reset. If the liquid level continues to rise and reaches the "High Storage Level" (top) electrode the audio/visual alarms will activate and be latched in until manually reset. The "Gnd" (sixth) probe is for reference purposes only.

BASIC CONTROL DESIGNATION TERMS:

_________________________-_____
Control Series# PumpsB-Breaker OptionA-Alarm OptionEnclosure Type-Control Panel Options

Basic "ST" Pump Control Includes:

  • Nema 12 steel enclosure w/hinged door
  • Removable painted steel backplate for component mounting
  • Pilot output contacts ea. pump
    10A @ 115V, 5A @ 230V
  • Low voltage liquid level relay(s)
  • Hand-Off-Auto toggle switch ea. pump
  • Pump run indicator light ea. pump
  • Hand-Off-Auto and run light for compressor
  • 2A control fuse
  • Field wire terminal blocks
  • Neatly bundled wiring harness
  • 115V Control transformer w/fused secondary
    (Three-phase units only)
  • U.L APPROVED AND LABELED
Storage Control
STORAGE TANK CONTROL

Alarm Feature (if desired) Includes:

  • Test-Off-Normal switch ea. alarm
  • Alarm indicator Light ea. alarm
  • Low voltage liquid level relay
    (ea. electrode type alarm)
  • Top mounted red lexan alarm light
    (Outdoor units only)
  • Dry remote alarm contacts

Breaker Feature (if desired) Includes:

For units w/o alarm:Molded case circuit breaker ea. pump
Molded case control circuit breaker
For units w/ alarm:Molded case circuit breaker ea. pump
Molded case alarm/control breaker
For 3-phase units:Motor protector for ea. pump (combination short circuit/overload)
Molded case alarm/control breaker

Options "A" - "Z" (if desired): See control panel options description in design section.


AMERICAN MANUFACTURING COMPANY, INC.
Last revised: Jun-14-2006
Comments to: info@americanonsite.com
Copyright © American Manufacturing Company, Inc., 2000

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