SECTION 033000 - CAST-IN-PLACE CONCRETE

Sludge Treatment Project Engineered Container Retrieval and Transfer System January 2012
3. 120V 20A.Control panel shall have a thermostatically controlled heater / fan.
4. Heater package shall be Hoffman DAH1002A or approved equal.
5. Main disconnect switch shall be UL98 listed and sized to handle full load amps of the
panel, with pad-lockable door interlocking handle.
6. UL 508e type combination starters (for 20HP and below) each with, IEC type
combination starter
7. Control power transformer with primary fuse protection,
8. An HOA selector switch, RUN indicator, HIGH TEMPERATURE indicator, SEAL
LEAK indicator and hour meter shall be provided for each pump. All pilot devices shall
be UL Type 4X rated, 22mm type manufactured by Square D or equal. The indicators
shall be long life LED type,
9. An alarm horn shall be provided and mounted on the side of the panel. Horn shall be
Federal Signal model 350 or equal with a minimum sound level of 100 db. A silence
pushbutton shall be located on the inner door.
10. An alarm light shall be mounted on the top of the panel, and shall be red polycarbonate
and UL Type 4X rated.
11. Control relays shall be provided as shown on plan drawings and shall be blade type, with
indicator lights. Relays shall be IDEC or approved equal.
12. Analog 4-20mA loops shall be provided with fuse protection.
13. Intrinsically Safe Barriers provided for all control wiring such as Submersible
Transducers, Floats and other low voltage devises.
14. Inputs shall be provided for each pump to include moisture in motor, motor overtemperature,
pump starter auxiliary contact to confirm pump operation when called,
redundant high and low float switch and HOA Auto position to confirm the pump is
available. Outputs shall be provided for each pump run command, out-of-service
indicator for each pump, alarm horn, alarm dome light and general fault contact
D. Sequence of Operation; Provide H-O-A selector switch. Inputs are provided and programmed
into the DLC for a contact of the AUTO position of the selector switch. When the H-O-A is
place into the HAND position, the DLC will be bypassed and the pump should run. If the
contact to the H-O-A selector switch is in the OFF position and input of the DLC is not closed,
the DLC sets the status of that pump to Out-Of-Service. When the H-O-A is placed into the
AUTO position, the pump is available to run as instructed by the DLC. Touching the HAND,
OFF or AUTO buttons on the Pump Status page will select the mode of operation. Touching the
HAND button will start the pump in manual mode. The pumps are available for automatic run
when the AUTO selector switch input is enabled and the “soft” H-O-A is in the AUTO mode.
1. The analog level signal is converted to tenths of feet and that value is compared to the
start and stop set points that are entered into the system by the user. On rising level, when
the level is equal to or greater than the lead pump start set point, the lead pump will start.
If the level continues to rise beyond the start lag pump set point, the lag pump will start.
If there are more than two pumps, rising level will start the additional pumps in sequence.
On falling level, the pumps will sequence off as the level drops below the respective stop
set points.
2. The pump alternation mode is set by the user. Automatic, time clock and manual modes
are available.
3. Automatic mode—the pumps will alternate after each pumping cycle.
Time clock—the pumps will alternate daily at the time set by the user.
Manual—the pumps will not alternate. The lead pump is selected by the user.
Contract 44577 KW Annex – Rev. E 44577-CSI-SPEC-001 221329-5