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Nine Bar Basics product guide

Chefman Crema Supreme RJ54-G-SS Espresso Machine

Single-drink routines where milk is steamed before the shot is pulled

The Crema Supreme is a semi-automatic with a thirty-setting conical burr grinder, a 58-millimetre portafilter and a 15-bar pump, with grind time, shot volume and brew temperature all programmable. Its guide is explicit that only one function runs at a time, so milk is steamed before the shot rather than alongside it. Plan for rinsing after every use, periodic burr cleaning and a descale every four to six months.

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Published specifications

  • Model RJ54-G-SS-AM; listing: 1,450 watts, 120 volts, cETL
  • 58 mm portafilter with single and double shot baskets
  • Conical burr grinder, 30 settings, dispensing to the portafilter
  • Guide defaults: 30 ml single, 60 ml double, 198 degrees F
  • Listing: three-litre removable tank with marked fill scale
  • Guide: standby sleep at 15 minutes, settable to 10, 20 or 29

Fit and limits

Strengths

  • Grind time, shot volume and brew temperature are all programmable
  • Standby sleep interval can be changed to suit your routine
  • Guide publishes starting dose, grind size and extraction targets

Caveats

  • Only one function at a time, so steaming and brewing cannot overlap
  • Warranty is limited to authorized distributors and retailers
  • Maker page and listing disagree on wattage; the touchscreen field does not match the guide

Brewing and steaming happen one after the other

The single most useful line in Chefman's guide for this machine is easy to miss: to maintain quality and temperature standards, the unit only allows one function at a time, brewing or steaming. That shapes the whole routine, and the guide's own recommendation follows from it, which is to steam the milk first and pull the espresso afterwards.

Everything else is conventional semi-automatic. A 58-millimetre portafilter takes single and double baskets, a 15-bar pump drives extraction with an analogue gauge on the front, and an integrated conical burr grinder with thirty settings dispenses straight into the portafilter through a grinding funnel. You tamp by hand and lock the portafilter into the brew head yourself.

The steam wand doubles as a hot-water tap. The guide uses it to preheat cups, to make an americano, and as part of cleaning, where a brief burst of hot water clears the inside of the wand after every milk drink.

Grind, dose, volume and temperature are all adjustable

Grind time defaults to about nine seconds for a single and thirteen for a double, adjustable from five to thirteen and ten to eighteen by holding a filter-size button. The guide also explains setting the grinder by weight instead, by zeroing a scale under the grinder outlet and holding the button until the target weight is reached.

Shot volume defaults to about 30 millilitres for a single and 60 for a double, adjustable from twenty to 150 and twenty to 250. Brew temperature defaults to 198 degrees Fahrenheit with alternatives at 194, 201 and 205 selected through the PROGRAM button. The guide's recommended starting point is grind size 12 with a twelve-gram single dose or twenty-gram double.

Grind size itself is changed by rotating the hopper to a marking, from fine to coarse. The guide says at least two ounces of beans must be in the hopper for the grinder to work properly, and warns that a coarse grind can overfill the basket, in which case the excess must be removed rather than forced into the brew head.

Standby timing you can change

After brewing the machine returns to standby, and the guide says it goes to sleep after fifteen minutes in standby by default. That interval is adjustable through a button combination to ten, twenty or twenty-nine minutes, so it can be set to match how you actually use the machine.

There is also a thermal cut-out. The troubleshooting table says that if the unit is on but stops operating it has entered overheat protection mode, and that the fix is to switch it off, unplug it and let it cool for about thirty to sixty minutes before trying again.

All custom settings can be cleared in one step by holding the on-off and PROGRAM buttons together in standby, which is handy if someone else has been experimenting with grind time or temperature.

Daily cleaning and the descale trigger

The guide's after-use list is short: rinse the portafilter and baskets in hot water immediately, clear blocked basket holes with the pin tool, wipe under the brew head and purge it with a water-only double cycle, wash the drip tray and milk pitcher in hot soapy water, and wipe the wand before running hot water through it.

The grinder needs periodic attention of its own. With the power off the hopper twists away, the beans above the burrs are cleared, and the upper burr lifts out after a counter-clockwise turn on its wire handle so both burrs and the grounds chute can be brushed. The guide warns that the burrs are extremely sharp.

Descaling is signalled by the clean and descale light blinking at power-up, which the guide says happens after about three hundred uses, and it recommends descaling every four to six months. The machine will still brew with the light on, but the alert stays until a cycle is run. Follow the guide for the procedure, which uses a commercial descaling solution prepared to its own package directions.

Size, power and what the listing claims

The listing gives 1,450 watts at 120 volts, a three-litre removable tank with a marked fill scale, a 58-millimetre portafilter and cETL certification, with dimensions of 16.14 inches deep by 13.39 wide by 16.34 high and a weight of 21.8 pounds. The part number is RJ54-G-SS-AM, and the manual supplied with the listing carries the RJ54-G-SS code and the Crema Supreme name.

Two published figures do not match. Chefman's own product page for the Crema Supreme states 1,350 watts at 120 volts, where the listing's table says 1,450 watts, and neither document explains the gap. Separately, the listing records the human interface input as a touchscreen, while the guide describes a physical control panel of nine buttons and lights plus a rotary steam and hot water knob and an analogue pressure gauge.

The guide's placement rules are firm: household use only, never outdoors, never on or near a hot burner or in a heated oven, and never on a stovetop or other heatable surface even when it is off, which it calls a fire hazard. The machine must be grounded in a three-prong outlet and the plug must not be altered, and it is to be operated and stored above 32 degrees Fahrenheit.

Warranty conditions before you order

The guide's warranty section gives one year from the date of initial retail purchase, available on sales through authorized distributors and retailers only, non-transferable and applying only to the original purchaser. It is void without proof of purchase within the United States and Canada, and without proof Chefman may void it or apply the date of manufacture instead.

Cover is for defects in material and workmanship under normal household use when the machine is used according to the guide. Exclusions named include misuse such as running it on incompatible voltage even through a converter or adapter, poor maintenance, commercial use, normal wear and tear, alterations by anyone other than Chefman including removal of the rating label, catastrophic events, and claims of lost enjoyment.

Chefman also says it may ask for photographs or video of the problem to assess it and to determine warranty eligibility, and it encourages registration using the model number, date code and access code from the product label. We have not used this machine and make no claim about how it performs.

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Primary sources

  1. Chefman user guide for the Crema Supreme RJ54-G-SS, supplied on the listing
  2. Chefman product page for the Crema Supreme espresso machine

Primary sources checked .

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