STANDARD EOUIPMENT (All Models)

General:

Either of two horizontal blower arrangements are available as standard: HR-1, horizontal discharge and HR-2, down discharge, as illustrated below.

Cabinet:

Bolted construction of aluminized steel; SBE-1 12 and SBE115 of 16 gauge, all other models with 14 gauge. Access panels are provided to allow easy access to motors, drives and filters (if ordered). Outside surface is primed with zinc chromate and finished with a coat of enamel.

Electric Controls:

Electric Heater controls - a standard SBEH, SBE9 or SBEV control system as described on page 2 of this bulletin.

Air flow switch - built-in, pressure differential type provides the best electric heater protection against air failure caused by fan belt or other blower malfunctions.

"No Glo" safeguard system - continues blower operation for a short timed period after electric heater shuts down. This control sequence extracts residual heat from the element which prolongs electric heater life.

115 volt control transformer - furnished on all Electroflo units with line voltage other than 115 volts.

NEMA 1 main control box - with terminals, relays, interlocks and starter for proper system control.

Terminal blocks - either single or multiple line terminal blocks are furnished on all Electroflo heating units dependent upon load requirements.

Remote control station - complete with system switches and indicating lights.

Blower:

Centrifugal forward curved, double width, double inlet, class 1 fan(s) with solid turned ground shaft and self-aligning prelubricated ball bearings. All blower wheels are statically and dynamically balanced.

Blower housings, bearings and adjustable motor base are mounted on a reinforced frame to insure rigidity and quiet operation. Adjustable drives are standard through 10 HP; fixed drives are standard with 15 HP and larger motors. V-belt drives are sized for 135% of motor horsepower.

Fan motors and drives are mounted within the blower cabinet. This affords motor protection and eliminates the operational hazard of V-belt drives external to the unit.

Motor:

T-frame, open dripproof, 1800 RPM prelubricated ball bearing type for all standard voltages.

Heater:

TYPICAL ELECTROFLO HEATER

UL Listed heating section with open type electric element, NEMA 1 terminal box, circuit fuses, step controller transformer with primary fusing, auto reset thermal cutout, heat limiter type secondary safety protection, de-energizing contactors and connecting terminal block(s) for wiring power supply. All fusing per NEC and UL.