Models & Variants
| Model | Base Design | Sealing / Rating | Output RPM |
|---|---|---|---|
| GHW/C | 45:1 worm gear jackshaft (GH base) | TEFC/TENV motor, Nema 4/12 or 4X; fibreglass control box | 38 |
| Opera-HW/C | V-belt jackshaft (OPH base) | Mechanical brake, Nema 4/12 or 4X | 41 |
| Opera-SHW/C | V-belt jackshaft (OSH base) | Solenoid brake, cast-iron pillow blocks, Nema 4/12 or 4X | 41 |
| GHX | 45:1 worm gear jackshaft | XPFC/XPNV motor, CSA certified: Class I Group D Div 1 & 2, Class II Groups F & G Div 1 & 2; certified die-cast enclosure & fittings | 38 |
All four share heavy-duty fundamentals: high starting-torque continuous-duty motors (single or three-phase), #50 roller-chain final drive with door sprockets for 6 to 12 in/sec travel, drum-band solenoid brake (mechanical on the Opera-HW/C), emergency chain hoist with electrical cut-out, and rotary cam limits that stay in time through manual operation.
What Each Rating Is For
Washdown (W/C series, Nema 4/12): Doors and surrounding areas that are hosed down daily , food and beverage processing, commercial kitchen service doors, wash bays. Keeps water, oil and dust out of the electrics.
Corrosive Washdown (W/C series, Nema 4X): Same hosed environments with salt air or chemicals , fish plants, chlorinated pool plant rooms, chemical storage. Corrosion-resistant components throughout.
Hazardous Location (GHX): Atmospheres that can ignite. Class I Group D covers vapours such as gasoline and solvents; Class II Groups F and G cover combustible dusts such as coal and grain. The GHX is CSA-certified for these indoor classified locations, including the hazardous-location push-button station and conduit fittings. If your AHJ or insurer has classified the room, this is the unit that satisfies code.
What Fails & How We Repair It
The sealing is the point , and the first thing lost to a careless repair. Every gland, gasket and certified fitting that gets disturbed must go back to spec. Mixing in a standard Nema 1 accessory (a bare photo eye, an unsealed control station) quietly voids the room's rating at its weakest point. Accessories must match the enclosure class; sealed stations such as the STATION078 (IP66 / Nema 4, 4X) exist for exactly this.
Beyond sealing, these are worm-gear and V-belt machines with the same service points as their standard siblings , reducer oil, belts, clutch, brake , just with a stricter rule: everything goes back sealed. We bring the correct gaskets, glands and certified fittings on every service call so the rating holds.
Choosing Between Models
If you are unsure which unit you have, the model code is on the data plate on the operator housing. Note the voltage, phase and roughly how many cycles a day the door runs , those three facts decide most of what we would bring to a call. We can also cross-reference the full Manaras model range or schedule a repair visit.
Parts & Accessories
Sealed-environment accessories , NEMA 4/4X control stations, hazardous-location push buttons, conduit fittings, gasket kits, reducer oil, belts, brake components , are stocked or available on short lead times. Pricing is quoted per project based on the exact enclosure class and voltage.
Service in Metro Vancouver
We install, commission and repair these operators throughout Richmond, Vancouver, Burnaby, Surrey and the North Shore. Our trucks carry the sealed glands, gaskets and certified fittings required to keep your room's rating intact.
Call 778-873-7282 for a quote or to book a service call.
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