SCVX20E

Overview

The Hobart SCVX20E is a combination atmospheric steamer/convection oven produced by Hobart Corporation of Troy, Ohio 45374. Hobart's catalog of replacement parts for the model — ML-46172, issued as Form 16748 in January 1988 and printed in the U.S.A. — states that it replaces Form 16295 and covers prior specification ML-46142. Parts suppliers file the SCVX20E under their electric combi-steamer categories, and one European parts catalog alone indexes 212 line items for the model, a sign of how thoroughly the unit was built out and how serviceable it remains.

The oven pairs two heat systems in a single cavity. An atmospheric steam section draws on an integral boiler with 2000 W heater elements, fed through a line strainer and a 24 V water solenoid valve, with steam delivered by a steam injector on flexible tubing. The convection section is driven by a 208/240 V fan motor turning a blower wheel past six 2.6 kW electric heating elements. The SCVX20E has even served as a reference oven in published food-science research: a 2020 poultry-quality study cooked chicken patties in one at 177 °C for 22 minutes.

Key Features

• Two heat systems in one cavity: boiler-generated atmospheric steam plus forced-air convection heating.
• Six 2.6 kW convection heaters, supplied in 208 V (part 150202-1) or 240 V (150202-2) versions, each under a heating-element hood with its own seal.
• Boiler steam plant: 2000 W heater elements in 208 V and 240 V versions, a 24 V water solenoid valve with coil, line strainer, copper tubing and a high-level water regulator cord.
• 208/240 V fan motor with motor seal ring, motor seal and flange, driving a blower wheel and venting through a dedicated exhaust assembly.
• Timer and thermostat control: timer with knob, EGO or Robert Shaw thermostats, and a service kit (293123) that converts an EGO thermostat to the Robert Shaw type.
• 24 V control circuit: pilot light with lens cover, buzzer and solenoid valve coil, served from the component-panel transformer.
• Layered interlocks: a door interlock switch, a micro-switch interlock on the chimney damper and a boiler drain cam interlock, plus a motor overload relay with a reset button on the control panel.
• Glass oven door with exterior and interior panels, silicone door and door-glass seals, a drilled handle, handle linkage and latch hardware.
• Flexible rack layouts: left- and right-hand oven side racks in 10-shelf or 7-shelf configurations, with chromed steel or stainless steel grills sold in cartons of five.
• Serviceable air and water paths: a framed metal-filter assembly, condensate drip pan, drain screen and a 10 mm vinegar cleanout tube at the boiler.
• Leveling hardware: four leg assemblies with adjustable feet.

Specifications

• Model: Hobart SCVX20E (parts catalog ML-46172)
• Type: Combination Atmospheric Steamer/Convection Oven, electric
• Manufacturer: Hobart Corporation, Troy, Ohio 45374
• Convection heating: six electric heaters, 2.6 kW each — 208 V (150202-1) or 240 V (150202-2)
• Boiler heating: 2000 W heater elements, 208 V and 240 V versions
• Fan motor: rated 208/240 V
• Control circuit: 24 V (buzzer, pilot light bulb, water solenoid valve and coil)
• Circuit protection: 3.2 A and 5 A fuses with holders
• Temperature control: EGO or Robert Shaw thermostat; hi-temp thermostat; thermocouple (149969) from the temperature control base to the steam inlet tee
• Oven racks: L.H. and R.H. side racks, 10-shelf or 7-shelf configurations
• Grills: chromed steel (293114) or stainless steel (270731), cartons of 5
• Door: oven door assembly (149940-42) with oven door glass (149913-1), silicone door-glass seal (149915-3), silicone door seal (149948) and door interlock switch
• Filters: metal filters in two sizes, held by clips in a filter frame (filter assembly 149940-39)
• Water system: 24 V solenoid valve (293052-1) with dedicated support, line strainer, copper tube, high-level water regulator cord
• Drain system: boiler drain linkage (vertical and horizontal) with control handle and cam interlock, 3/8-inch pipe plug, 1/4-inch unions, 10 mm vinegar cleanout tube, drain screen (149940-80)
• Steam system: steam injector with flexible tubing and hose clamp, steam relief tube, steam inlet tee (thermocouple reference point)
• Chimney: chimney assembly with damper, damper seal, control lever and micro interlock switch
• Sealer: silicone sealer CAF 538 THIX, 11 oz tube
• Documentation: Form 16748 (Jan. 1988); replaces Form 16295; covers ML-46142

Installation & Requirements

The SCVX20E document reproduced here is a parts catalog, so it details connection hardware rather than clearance dimensions. The connection points it identifies are:

• Positioning: the cabinet stands on four leg assemblies (149940-7) finished with adjustable feet (149919-2), secured with M8 x 1.25 x 20 mm hex cap screws and shakeproof lock washers.
• Electrical: power lands on the electrical component panel, which carries terminal blocks with end terminals, a grounding lug, a transformer, contactors and an auxiliary contactor, and 3.2 A and 5 A fuses. Heater, boiler and motor circuits are rated 208/240 V; the control circuit runs at 24 V.
• Water: the boiler feed passes through a line strainer to the 24 V solenoid valve on its dedicated support, joined with copper tube, male and female threaded unions, reducing bushings and nipples; sleeving for a high-level water regulator cord appears in the miscellaneous parts list.
• Steam and venting: steam reaches the cavity through the steam injector on flexible tubing, a steam relief tube is fitted, and vapor exits via the chimney assembly with its damper and the exhaust assembly.

Clearance, ventilation and wiring-specification figures are not published in this parts catalog; Hobart's installation literature for the model covers them.

Operation

The control panel carries a timer with its knob, a thermostat knob, a switch knob and operator, a 24 V pilot light with lens cover, a 24 V buzzer and a motor reset button. A door interlock switch is wired into the panel, and the control panel assembly is sealed with its own gasket and held with a restraint cable.

In steam mode, the boiler — heated by its 2000 W elements — generates atmospheric steam. The 24 V water solenoid valve manages feed water through the line strainer, steam is introduced through the steam injector on flexible tubing, and the steam relief tube provides a relief path. The boiler drain is operated by its control handle through vertical and horizontal linkage, with a cam interlock in the circuit.

In convection mode, the 208/240 V fan motor spins the blower wheel across the six 2.6 kW heating elements, each under its own element hood and seal. The chimney damper, moved by its control lever and confirmed by a micro interlock switch, manages vapor exit, and a motor rotation label on the unit documents correct blower direction.

Cleaning & Maintenance

• Boiler care: the parts list includes a 10 mm vinegar cleanout tube tied to the boiler drain; the drain circuit includes a 3/8-inch pipe plug, 1/4-inch unions and the drain cam interlock.
• Condensate handling: a condensate drip pan (149940-86) with its support screws catches moisture, and a drain screen (149940-80) guards the drain.
• Air filtration: the filter assembly (149940-39) holds metal filters in two sizes with clips in a frame, so the filters can be removed for cleaning.
• Seals and gaskets: replaceable silicone seals cover the door (149948), the door glass (149915-3) and the control panel; service sealer CAF 538 THIX comes in tubes.
• Insulation: the boiler is wrapped with an insulation sheet held by clips.

The catalog lists components rather than cleaning intervals; step-by-step procedures belong to Hobart's service literature for this model.

Troubleshooting

• Blower or motor faults: the control panel carries a motor overload relay and a motor reset button; the fan motor is rated 208/240 V and is sealed by a motor seal ring and flange, driving a blower wheel secured with a fan washer, washer plate and wing nut.
• Power faults: check the 3.2 A and 5 A fuses in their holders, the contactors and auxiliary contactor, the transformer, and the terminal blocks and grounding lug on the component panel.
• Temperature faults: the oven uses an EGO or Robert Shaw thermostat; a hi-temp thermostat and a thermocouple (149969) between the temperature control base and the steam inlet tee feed the control base, and the capillary bulb is held by a dedicated support and bulkhead fittings. Where an EGO thermostat must become a Robert Shaw unit, Service Kit 293123 performs the conversion.
• Interlock faults: the door interlock switch, the chimney damper micro switch and the boiler drain cam interlock can each halt operation when their condition is not met.
• Steam and water faults: the 24 V solenoid valve and its coil, the line strainer, and the copper tube and unions make up the feed-water path; the steam injector, flexible tubing and hose clamp carry steam into the cavity.

Applications

As a combination atmospheric steamer/convection oven, the SCVX20E covers both moist-heat and dry-heat cooking from one cavity: boiler steam for steaming, and blower-driven convection heat for baking and roasting. The model remains a workable asset in kitchens that keep it running.

PartHubz supplies replacement parts for the Hobart SCVX20E. Find more Hobart equipment resources at parthubz.com/equipment/hobart, or call 833-700-8006 / email [email protected].