The OPJ is the heavy-duty jackshaft with a floor level disconnect. Same continuous-duty motor and #50 chain drive as the OPH, without the Hoist-a-matic chain hoist.
What This Operator Suits
Heavy-duty standard, high and vertical lift sectional doors, rolling doors and grilles.
Choose the OPJ over the OPH when the door is heavy enough to need the heavy-duty platform but nobody has to hand-operate it during an outage. That is a common situation in buildings with more than one bay, or where the door is not the only way in. The saving over an OPH is real and it costs you nothing operationally if the hoist would never be used.
The same manufacturer caveat applies as on the OPH: the standard build suits properly balanced rolling steel doors with under 80 lb of imbalance. Heavier rolling doors want the drum-band solenoid brake modification.
Specification
| Item | Detail |
|---|---|
| Motor | 60Hz high starting torque, continuous-duty, single-phase capacitor start or 3-phase, open drip proof |
| Output shaft speed | 41 rpm |
| Drive | #50 roller chain with 50B12 sprocket |
| Reduction | 5L/B V-belt first step, then chain and sprockets |
| Brake | Mechanical brake |
| Manual operation | Floor level disconnect mechanism |
Duty rating in plain terms. Heavy duty, continuous-duty motor.
What Fails on This Unit
Reversing clutch wear, as across the heavy-duty series. Beyond that, the floor level disconnect is the thing that generates avoidable service calls, left disengaged after someone opened the door manually, the operator runs and the door does not move. Check that first.
Manufacturer Documents
Originals from Manaras-Opera, useful if the paperwork for a unit already in your building has gone missing:
Choosing Between Models
The OPH adds the Hoist-a-matic; the OHJ adds both hoist and disconnect. If you are unsure which unit you have, the model code is on the data plate on the operator housing. Note the voltage and phase while you are there, and roughly how many cycles a day the door runs, those three facts decide most of what we would bring to a call.
See the full Manaras model reference for the whole range, or Manaras operator repair for service.
Parts and Accessories
Manaras publish a full accessory range that pairs with this operator: monitored and non-monitored photoelectric cells, light curtains, electric and pneumatic sensing edges, interface modules, push-button and key switch control stations, pull switches, keypads and card readers, radio receivers and transmitters, and traffic light kits.
One point that causes repeated confusion: on a UL 325 monitored circuit, a failed safety device makes the operator refuse to close. That is correct behaviour, not a malfunction. A door that suddenly will not close, with no other symptom, is very often a photo eye or sensing edge that has failed or drifted out of alignment.
- Accessory catalogue (PDF)
- Accessories and replacement components list (PDF)
- Radio Series 900 dip-switch compatibility chart (PDF)
- Radio Series 100 rolling code compatibility chart (PDF)
- Operator codes explained (PDF)
We stock the common wear items for the Opera and MEGA series, control boards, clutches, solenoid coils, limit switch assemblies and safety edges. Anything we do not carry we source through our distributor, and you will hear about a lead time before we attend rather than after.
Frequently Asked Questions
How do I confirm I have a OPJ?
The model code is on the data plate on the operator housing. If the plate is unreadable, which happens on older units in damp parkades, send us a photo of the operator and we can usually identify it from the frame and drive layout.
Do you stock parts for it?
We carry the common wear parts across the Opera and MEGA series. Model-specific components come through our distributor, typically within two business days.
Is it worth repairing or should we replace it?
Clutches, brakes, boards, limits, safety devices and wiring are repairs. A seized gear reducer or a burnt-out motor on a very old unit is usually a replacement. We tell you which one you are looking at and why, rather than leading with a new-operator quote.
Can you service a unit we did not buy from you?
Yes. Most Manaras units we attend were installed by someone else, often years ago.
The door will not close but opens fine. Is the operator dead?
Almost certainly not. That is the classic monitored safety circuit symptom, a photo eye, light curtain or sensing edge that has failed or moved. Check the lenses are clean, the alignment is good, and nothing is parked in the beam before assuming the worst.