136 RTAA-SVX01A-EN
Pump Package
Control Panel Features and Options
1. NEMA 3R Control Panel Enclosure
2. Individual Fused Disconnect Switches
3. Each A/C motor starter is a full voltage, non-reversing magnetic starter
and is provided with adjustable 3-leg overload protection with manual
overload reset push button. Motor starters are mechanically and electri-
cally interlocked to ensure single pump operation.
4. Each pump is provided with a panel mounted light (green) which illumi-
nates when the pump is running and H/O/A switch for manual and auto-
matic operation. The hand or manual mode will not override system
protection devices such as differential pressure failure.
5. Control Circuit will be 115 volt A/C. The transformer will be provided with
two fuses on the primary and one fuse on the secondary.
6. Control Power (on-off) Switch and Light (amber) provides a means of iso-
lating the control circuit without disconnecting the incoming power at the
main disconnect. The light provides visual indication of power to the con-
trol circuit.
7. System Differential Pressure Circuit with light (red) - often called " pump
fault protection". This feature automatically starts the lag pump after a
time delay if the differential pressure sensed in the suction and discharge
manifold drops below a preset point (determined by job conditions).
Alarm indicator light remains on until manually reset.
8. Auto Alternator - (2) equal pumps. This feature will automatically alternate
the sequence of the pumps on each shutdown cycle to equalize their run-
ning time.
9. Elapsed Time Meters are non-resettable and provide a record of the
hours of operation for each pump.
10. Auxiliary Relay Contact provides hard-wired "System Status" contact to
the control panel terminal strip for remote indication.
11. Lead Pump Remote Start/Stop provides hard-wired input to the control
panel terminal strip for remote start/stop.
Connection Power
The unit will operate under the following conditions:
The voltage can be +/- 10% of the motor nameplate data
The frequency can be +/- 5% of the motor nameplate data
The combined voltage/frequency variation cannot exceed +/- 10%.
Install electrical wiring in accordance with NEC Standards and any local
regulations. The line voltage and wire ampacity must match the voltage and
the full load AMP's of the system.
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