MECHANICAL SPECIFICATIONS - AUTO-LINE HORIZONTAL AUTOROLL
STANDARD UNIT CONSTRUCTION
Material of Construction: The Horizontal AutoRoll unit shall be provided fully assembled and meet sizes and capacities shown on plans and
listed in the equipment schedule. All sheet metal components shall be constructed of aluminized steel and all fasteners and hardware shall be
provided with a corrosion resistant finish. All roller and bearing surfaces shall use oil lite bushings and high impact plastics.
Media Advancement: Filter media for the Horizontal AutoRoll unit shall be advanced either manually or automatically (mechanically); to be
determined per specifications and customer requirements.
Control System for Automatic Units: The AutoRoll’s control system shall be rated NEMA 1. Power shall be 120 volt, supplied with a 24 volt
step-down transformer. Controls shall be either solid state timer or differential pressure to be determined per specifications and customer
requirements. The timer shall be a fully adjustable 24 hour timer. The differential pressure switch shall be factory set at 0.50" W.G. All systems
shall be provided with a media run-out switch on each section, a media metering switch (timer control units only), a media run-out signal light and
a manual push button for media advancement. The drive motor shall be actuated by either the timer or pressure switch which will cause the media
to be advanced in small increments only when the timer actuates or dust accumulation reaches the set point of the differential pressure switch.
Electrical Installation: The Horizontal AutoRoll unit shall require only field connection of a 120 Volt 50/60HZ single-phase power supply for
operation purposes. The media run-out switch(s) and media metering switch (timer control unit only) shall be prewired and factory mounted.
Switch(s) shall be provided with connectors for plug-in receptacles located on the control box.
Drive/Motor: The drive motor shall be 1/8 HP, 120V 50/60 HZ single-phase gearhead type with thermal overload protection. The AutoRoll drive
assembly can be either located inside or outside the air stream per customer specifications. Inside drive assemblies shall be factory mounted.
Outside drive assemblies shall be field mounted.
Clean Roll Compression Panel: A clean media roll compression panel and system design shall provide tension across the media face to ensure
a compressed take-up roll of used media.
Access Doors: The Horizontal AutoRoll shall be provided with an access door at each end of the unit. Access doors shall be fully gasketed with
EPDM gasket at their perimeter and closed by use of quick action over-center draw latches.
Roll Media Supply: An initial supply of roll media shall be provided for the roll filter. The roll media shall be either BLC type “GRM” Fiberglass or
BLC type “SRM” Synthetic Media. For other types of roll media that can be provided by BLC, consult factory.
UNIT OPTIONS
Specify Timer/Pressure Override Control for conditions where a temporary overload dust condition could occur. This allows the pressure
override switch (factory set at 0.50" W.G.) to operate the AutoRoll under conditions the timer would not react to.
Specify Timer/Roll-Saver Switch Control for a combination of a timer and differential pressure switch preventing the timer from operating when
the pressure drop is below a preset condition of the pressure switch. The differential pressure switch shall be factory set at 0.35" W.G. The
system will also take the place of a fan interlock which will prevent the filter from advancing media while the fan is shut down.
Specify Timer/Pressure Override/Roll-Saver Switch Control where a combination of timer/pressure override and timer/roll-saver switch
controls is suitable for system application.
Specify Photocell Control in lieu of timer, pressure or previously discussed controls for a control which does not depend on air flow or time to
operate. This feature makes it suitable for use with VAV systems. The photocell shall be factory preset for average dust loading conditions and
is fully adjustable. The photocell shall be pulsed led solid state construction and not rely upon an incandescent light bulb.
Specify Electrical Rating for Control System if other than standard NEMA 1 rating is to be provided. NEMA 3 through 13 ratings are available
(including the explosion-proof groups). Consult factory for further details.
Specify Heavy Duty Drive where heavy dust loading conditions are expected. The heavy duty drive shall be externally mounted and consist of
a 1/3 HP capacitor start 120V 50/60 HZ single-phase motor with a separate gear-reducer. The reducer shall directly drive the media take-up core
and drive up to two (2) sections of roll media at a time.
Specify Heavy Duty Drive with Jackshaft where extreme conditions with heavy loading occur. The heavy duty drive shall be externally mounted
and consist of a 1/3 HP capacitor start 120V 50/60 HZ single-phase motor with a separate gear-reducer. The reducer shall drive the jackshaft and
drive up to two (2) sections of roll media at a time. Each section of roll media shall be driven by a jackshaft/chain and sprocket drive.
Specify Reverse Air Flow for applications which require change-out of roll media from the “clean air” side of the unit. The AutoRoll shall be
designed and manufactured to allow for media change-out from the “clean air” side and provided with a used media roll cover.
Specify Used/Clean Media Roll Cover where required. Each section shall be provided with a used or clean media roll cover (or both).
Specify Stainless Steel Construction for alternate material of construction. Available in 304 or 316 stainless steel.
Specify Enclosure Panels where the Horizontal AutoRoll is to be fully enclosed. The AutoRoll shall be enclosed in 16 gauge aluminized steel
enclosure panels. Duct mounting flanges shall be provided for ease of roll media installation. Standard mounting flanges are to be 2 inch
turned-in around the perimeter. Unit depth shall be 26 inches with enclosure panels.