CMP101G

Overview

The RATIONAL CMP101G CombiMaster Plus is a gas-fired commercial combi-steamer with capacity for 10 x 1/1 GN containers or grids. The specification lists a daily meal range of 80–150. It cooks with steam, hot air, or a combination of both, with climate management that measures humidity and provides five-stage setting and regulation.

The cooking cabinet is made of 304 stainless steel inside and out, with rounded corners and a splash guard. The unit includes a high-performance fresh steam generator, a core-temperature probe, an integral USB port and three automatic cleaning programmes.

Key Features

• Three cooking modes: steam, hot air, and steam combined with hot air.
• Climate management: humidity measurement with five-stage setting and regulation.
• Programmable cooking: 100 cooking programmes, each with up to six steps.
• Air circulation: five programmable fan speeds, dynamic air mixing and an integral fan impeller brake.
• Core-temperature monitoring: probe for core-temperature measurement.
• Cleaning support: three automatic cleaning programmes, automatic service notices and a menu-guided user descaling programme.
• Data and updates: integral USB port for HACCP data output and software updates.
• Water management: automatic active rinsing and drainage of the steam generator by pump, with separate solenoid valves for normal and softened water.
• Other features: cool-down function for fast cooking-cabinet fan cooling, an integral maintenance-free grease extraction system with no additional grease filter, a retractable hand shower and a door handle with right/left and slam function.
• The specification describes the appliance as splash- and hose-proof to IPX 5. It also lists automatic adaptation to installation location conditions such as height and climate.

Specifications

• Model: RATIONAL CombiMaster Plus 101 G, CMP101G.
• Fuel: gas; the specification provides ratings for natural gas and liquid petroleum gas (LPG).
• Capacity: 10 x 1/1 GN.
• Loading: lengthwise loading for 1/1, 1/2, 2/3, 1/3 and 2/8 GN accessories, as well as 12 x 20 inch accessories.
• Meals per day: 80–150.
• Cooking temperatures: steam, 30–130 °C; hot air, 30–300 °C; steam and hot air together, 30–300 °C.
• Dimensions: 1,042 mm high x 847 mm wide x 776 mm deep.
• Weight: 143 kg net; 167 kg gross.
• Interior and exterior: 304 stainless steel, identified in the specification as DIN 1.4301.
• Water supply: 3/4 inch connection; the technical information also identifies a pressure-hose connection of 3/4 inch / d 1/2 inch.
• Water pressure: 1.5–6 bar (150–600 kPa; 0.15–0.6 MPa).
• Drain: DN 50 mm; the product data also lists a 50 mm outside-diameter drain.
• Gas connection: 3/4 inch NPT.
• Rated thermal load, natural gas: 22 kW total; hot air, 22 kW; steam, 20 kW.
• Rated thermal load, LPG: 22 kW total; hot air, 22 kW (82,000 BTU); steam, 20 kW.
• Electrical connected load: 0.5 kW.
• Mains connection: 1 NAC, 230 V, 50/60 Hz; breaker size listed as 1 x 16 A.
• Cable: 3 x 2.5 mm²; the specification calls for copper wiring.
• Waste-water connection: fixed connection, subject to the specification's note that this applies where permitted.
• Maximum load: 45 kg total, with a maximum of 15 kg per rack for the 10 x 1/1 GN appliance size.

Installation & Requirements

The CMP101G specification lists a 3/4 inch NPT gas connection and a 230 V, 50/60 Hz, 1 NAC electrical connection, with a 1 x 16 A breaker size and a 0.5 kW electrical connected load. It specifies copper wiring. The water connection is 3/4 inch, the stated water pressure range is 1.5–6 bar, and the drain is DN 50 mm. The installation information says installations must comply with local electrical, plumbing and ventilation codes.

For service access, the specification recommends 500 mm of clearance on the left. It states a minimum of 350 mm where heat sources affect the unit's left side. The installation drawing identifies a DN 60 mm steam vent pipe, a gas connection, and exhaust pipes for the steam and hot-air burners; it also shows a minimum distance of 50 mm. Check the site plan and the appliance's installation documentation to interpret the drawing for the intended installation.

Operation

Select steam, hot air or combined cooking, then set the cooking temperature and time or core temperature using the separate controls. The temperature unit can be set to °C or °F. The operating specification lists steam from 30 °C to 130 °C, hot air from 30 °C to 300 °C, and combined steam and hot air from 30 °C to 300 °C. A core-temperature probe is included, and up to 100 cooking programmes can be saved, with as many as six steps in each programme. Fan speed has five settings and is programmable.

The manual gives a maximum load of 45 kg for the 10 x 1/1 GN size, no more than 15 kg on each rack. It cautions that exceeding the maximum load can damage the appliance. For the floor appliance, the door is not tightly closed unless its handle is vertical. Leave the door slightly open during a prolonged idle period, such as overnight. For a long stoppage, such as a non-work day, the manual says to shut off the water, power and gas supplies. The source for this model also states that the door can be locked open at 120° or 180°.

Cleaning & Maintenance

The operating manual calls for daily cleaning, including when the appliance is used only in steam mode. Grease or food deposits left in the cooking cabinet can catch fire. If food or grease ignites, shut the appliance down immediately and keep the door closed; if further extinguishing is required, disconnect the appliance from the mains and use a fire extinguisher, not water.

CleanJet provides three cleaning programmes for different levels of soiling. For the 10 x 1/1 GN size, the programme table lists these durations and tablet quantities:

• CLE1, powerful clean: for heavy roasting and grilling deposits. The table lists 3 hours 30 minutes. With non-soft water, use four cleaner tabs and one rinse-aid tab; with soft water, use three cleaner tabs and one rinse-aid tab.
• CLE2, economical clean: for light soiling, up to 200 °C. The table lists 2 hours 30 minutes. With non-soft water, use two cleaner tabs and one rinse-aid tab; with soft water, use one cleaner tab and one rinse-aid tab.

Use only the manufacturer's cleaner and rinse-aid tabs; the manual warns that other cleaning chemicals can damage the appliance and that excessive chemical quantities can cause foaming. Do not put tabs in a cooking cabinet hotter than 50 °C. Do not use scouring or abrasive agents, acids, a high-pressure cleaner, a steam cleaner or a direct water jet. Clean the exterior with a mild household cleaner, such as dishwashing detergent, on a damp soft cloth. Clean the press-fit door gasket daily with a soft cloth and washing-up liquid; the manual says this extends its service life. It also notes that constant operation at cabinet temperatures of 260 °C or higher, high browning settings (4/5), and foods high in fat or gelatin can cause faster gasket wear.

Troubleshooting

• No function after switching on: check whether the external main switch is off and switch it on if necessary. The manual also lists a tripped fuse on the premises' distribution board as a possible cause. If the appliance has remained below 5 °C for a long time, heat the cooking cabinet above 20 °C; the appliance must be used in frost-free conditions.
• “CHnG FILt” message: the air filter is soiled. Replace it as described in the manual, then press the cooking-time button to acknowledge the message.
• “CHnG PoL” on a gas appliance: the manual identifies incorrect power-supply polarity. If connected by a plug, it instructs the user to remove the connector and turn it through 180°. For a permanent connection, have an electrician correct the polarity.
• “rES” displayed continuously on a gas appliance: check whether the gas supply is interrupted, open the gas valve, and switch on the ventilation cover. The manual also lists low gas pressure and advises having the gas supply checked.
• Cooking-mode display flashing: the cooking cabinet is too hot. Use the Cool Down function to cool it.
• Drain blocked: the manual directs the operator to remove and clean the outlet pipe at the back of the unit. It notes that blockages can occur when foods high in fat are cooked frequently or when the outlet-pipe drop is too shallow; route the outlet pipe as described in the installation instructions.

Applications

The specification describes the CombiMaster Plus as a hot-air steamer for most cooking methods used in commercial kitchens, using steam and hot air individually, in sequence or together. The manual's steam-cooking guidance lists fish, meat, vegetables, side dishes and fruit as foods that may be cooked together when they use the same cooking method. It recommends perforated GN containers for potatoes to let steam circulate, and shallow solid GN containers for dumplings. Rice and cereals are the foods for which the manual says to add water, at a ratio of one part grain to 1.5–2 parts water. The listed 10 x 1/1 GN capacity and 80–150 meals-per-day range provide a reference for assessing fit with a kitchen's production needs.