for temperature range of -29 to plus 121 degrees C -20 degrees F to plus
250 degrees F and pressure range from 381 mm 15 inches of mercury vacuum to
103 kPa 15 psig.
2.3.10
Manual Control System
**************************************************************************
NOTE: Delete inapplicable control system. NEMA 3R
and NEMA 4 Types are exterior panel types.
**************************************************************************
Each blower shall be provided with a control panel containing all starters,
circuit breakers, disconnects, and other equipment required for manual
starting and stopping of the blower. Motor controls and motor control
centers shall conform to NEMA ICS 1, NEMA ICS 2, NEMA ICS 3, NEMA ICS 4,
NEMA ICS 6, UL 508, and UL 845. Circuit breakers shall conform to IEEE
C37.13. The control panel shall be in a NEMA 250, [Type 12] [Type 3R]
[Type 4] enclosure. All materials and construction shall comply with
Section 16402 INTERIOR DISTRIBUTION SYSTEM.
2.3.11
Automatic Control and Monitoring System
**************************************************************************
NOTE: Delete inapplicable control system.
**************************************************************************
Each blower shall be provided an automatic control and monitoring system to
control start-up and shut-down sequences, to indicate various operation
parameters, and to actuate blower protective devices. All accessory
devices shall be operated through this system.
2.3.11.1
Panel Construction
**************************************************************************
NOTE: NEMA 3R and NEMA 4 Types are exterior panel
types.
**************************************************************************
The automatic control and monitoring system shall be enclosed in a NEMA 250,
[Type 12] [Type 3R] [Type 4] panel and shall be completely wired and tested
with internal connections being made on terminal blocks. Power supply to
the control panel shall be [_____] volts ac, [_____] phase, 60 Hz to a
[_____] amp flange mounted disconnect. Internal voltages, including [120]
[_____] volts ac, shall be derived from the [_____] volts ac, supply.
Control power transformer shall be [_____] volts primary and [_____] volts
secondary with kVA rating as recommended by the manufacturer. Instrument
and control transformers shall comply with IEEE C57.13 and NEMA ST 20.
2.3.11.2
Automatic Control
a.
Automatic controls shall be provided for all machine parts to
ensure proper startup and shutdown sequences. A
manual-off-automatic switch shall be provided for each blower. In
addition, manual control switches shall be provided for the
[auxiliary oil pump,] [unloading valve,] [and] [inlet butterfly
valve]. Manual control switches shall be active only when the
selector switch is in the manual position. When the selector
switch is in the automatic position, the control system shall
sequence startup of the blower as follows:
SECTION 11375A
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