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O P E R A - MH   (O M H)

Medium-Duty Jackshaft Operator With Hoist

The Opera-MH is a medium-duty operator designed for use on standard, high and vertical lift sectional doors, small rolling doors and grilles, as well as rolling sheet doors.(1)

The operator can be wall, hood, or shelf mounted on either side of the door. It incorporates the patented Hoist-a-matic®, a self-engaging chain hoist for manual operation, which simplifies operation and installation.

The operator is offered with the Electronic Control Board (BOARD 070) with MONITORED external entrapment protection devices (ANSI/CAN/UL 325 compliant).

1/2 HP, 120V, single-phase, intermittent-duty, open type motor with instant reverse and internal automatic reset thermal overload protection (60Hz). Removable without affecting limit switch settings. Also available with 50Hz motor, consult inside sales.

First step in reduction 5L/B V-belt drive, additional steps by chain and sprockets. Input shaft is 5/8", supported by precision ball bearings. Output shaft is 1" with 1/4" keyway, supported by ball bearings. Output shaft speed: 36 rpm.

Adjustable friction type, positioned on input shaft, easily adjustable from outside.

#41 roller chain with a 41B12 sprocket for the operator drive shaft. Door sprocket selected for a door travel of 6”/s to 12”/s.

Mechanical brake.

Manual Operation:
Hoist-a-matic® self-engaging hoist (floor level engagement device is not required to operate) for manual chain operation.(2) An electrical interlock automatically disconnects power to the motor operator when chain hoist is engaged. Hoist on right is standard. Hoist handing must be specified when ordering.

Electrical Enclosure:
All electrical components are in a Nema 1 enclosure. Hinged electrical enclosure cover with stable opened position. Control box may be lifted to access reduction sprockets and chain.

Limit System:
Rotary-type oil-impregnated steel cams, commercial grade switches. Limit shaft is supported by self-lubricating bronze bushings for increased precision. Remains in time when there is a manual operation or after the motor has been removed.

Accu-cam® Feature:
Precise and quick one-handed adjustment of the limits.

Corrosion Protection:
Frame and control enclosure protected by baked on, long lasting enamel finish. Polymer control box cover. All shafts protected by yellow chromate coating.

Wall, hood, or shelf mounted on the right or on the left of the door. For indoor use only.

Clearance: side room required 15" (380 mm)
Maximum Door Height: 14' (4260 mm)
For more details, please consult our Dimensions Drawing.

Shipping Weight:
Approx. 68 lb - 31 kg.

2 Years, per section 6 of our Terms and Conditions of Sale.

ECB Units (BOARD 070):
24VDC relaying circuit with a 40VA class II transformer, non-volatile memory. Features available: On-board radio receiver, 1.5s delay on reverse, programmable maximum run timer, mid-stop, timer to close (suspension possible from floor level), built-in cycle-counter, independent input loop terminal, advance close system, test buttons, reverse wiring detection and door lock sensor. Operating mode selectable on site: C2, B2, D1, E2, T or TS.

Electronic Monitored (M) Version:
Provides the monitoring of Primary External Entrapment Protection Devices. Includes monitored photoelectric cells (PHOTO 070 standard). In this mode, Ancillary Entrapment Protection Devices (optional) may be used to supplement primary entrapment protection, such as non-monitored photoelectric cells, 2-wire non-monitored sensing edges and pneumatic sensing edges.
Certifications: ANSI/CAN/UL 325.

Note: ANSI/CAN/UL 325 applies to units intended to be used in ordinary locations in accordance with the Canadian Electrical Code, Part I and the National Electrical Code, NFPA 70, respectively.

Control Accessories:

Angled terminal strip allows for the connection of 3-button stations (one supplied with the operator), non-monitored sensing edge / photoelectric cells / light curtains, external radio receiver, ceiling pull switches, key switches, loop detectors, LED strips, external interlocks, universal auxiliary output module. Optional Manaras Internet Control™ (MIC) available. 2A fuse protected 24VAC output is available for accessory power supply. Nema 4/12 or Nema 4X protected monitored photoelectric cells upgrade available.

Mechanical Accessories:
Wall or hood mounting bracket, chain spreader, etc. Consult inside sales.

Mechanical Modifications:
Left hand chain hoist, #50 roller chain and sprocket on final drive, hand crank, limit shaft speed-up, etc. Consult inside sales.

California Market: Proposition 65 Warning

(1) For properly balanced rolling steel doors with less than 50 lb of imbalance, rolling sheet doors, vinyl doors or equivalents. For larger rolling doors, we recommend using an electrically activated drum-band type solenoid brake, see Mechanical Modifications.

(2) The hoist is designed for light and limited use in the event of troubleshooting only.




Consult our Accessories and Replacement Components page.


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