VBM Domobar Super Dual Boiler PID Espresso Machine – V4

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Description

VBM Domobar Super Dual Boiler PID Espresso Machine – V4

Since 2008, Vibiemme (VBM) has worked diligently with importers, distributors, and industry professionals to upgrade their dual boiler models. One goal was to build a DB that would not have any compromises at 15amp when compared to 20amp.

Version 4.0

The latest version (4.0) now has both boilers, coffee and steam, fully insulated and PID managed. The drip tray cover’s new design has a hole to reduce ‘splatter’ from the 3 way valve extended below the grouphead. The former versions 3.5 and below had a pressurstat to control the steam boiler.

Steam Boiler Pre-Heat

Here is the kicker on other dual boilers. Especially those which preheat water through the steam boiler before entering the coffee boiler. This design is to reduce the temperature fluctuations in the coffee boiler. However, one issue occurs! The incoming water to the coffee boiler can be at a lower temperature when the steam boiler is off. Thus, with the same programmed PID settings, the coffee boiler may not react fast enough to maintain temperature. Since 2016, VBM’s solution was to implement a temperature management system. There are “2 heating elements” in the coffee boiler, a 600 watt and a 300 watt. When the steam boiler is on, the system only uses 1 element in the coffee boiler to maintain temperature. When the steam boiler is off, the system uses both heating elements.

Upgraded Safety Valve on Steam Boiler

Since 2016, all VBM dual boilers have an upgraded safety valve on the steam boiler. The safety valve opens up at 2 bar to prevent any excess steam out. This was to allow the programmed PID to elevate the steam boiler to a higher pressure to produce greater steam! In addition, the upgraded steam boiler can withstand higher steam pressure. Without the upgrade, the boiler walls would bow out, weakening the silver solder, and then creating leaks. You can program the steam boiler PID up to 1.5 bar pressure. Coupled with a large 1.9 copper boiler and a commercial grade steam pipe, the throughput and capacity are there for superior performance. The steam pipe is not a no-burn wand because no-burn wands have half the diameter of the throughput of a standard pipe.

In fact, look at our PID overview sheet. With the steam boiler set at 1.5, you can also program the F.05 setting (steam boiler offset) to have the steam pressure go past 2 bar! However, the steam boiler safety valve will start releasing steam at 2.0-2.2 bar. So, be careful when adjusting the steam boiler offset. This feature was inside machines with a manufacture date from 2016 and on!

TOP FEATURES:

Dual boilers
  • Copper, insulation – The boiler is copper which retains heat better than stainless steel. Typically copper boilers are more susceptible to limescale when you compare to stainless steel boilers. Therefore, we highly recommend using a water softener. The manufacturer wraps the boiler with insulation for maximum heat retention. This helps with temperature stability for the espresso extraction and also helps save energy.
  • Pull a shot & steam milk at the same time – Steam is always readily available. Hence, there is no wait time going from coffee to steam mode. Works well if entertaining a small group of people.
  • Optimal size copper boiler – 0.5-liter capacity. This smaller boiler size allows for quicker displacement of stale water. Larger coffee boilers for machines in this class have more difficulty. Boiler temperature is controlled by PID.
  • Large capacity steam boiler – 1.9-liter capacity. Boiler and temperature controlled by PID.
  • Three stage power switch – Allows you to operate the espresso machine with the coffee boiler only or both boilers simultaneously.
PID (Proportional, Integral, Derivative)

This allows you to manage temperature control of the coffee boiler and steam boiler. If you are not sure what PID is, here is an overview.

Small water reservoir (2.1 liters):

Allows approximately 20 double shots to be extracted without a refill. Refill can occur on the fly while the machine is operating. For those who believe the small boiler makes better coffee because of fresh water displacement, we have a smaller reservoir for the same reason.

PLUMB-ABLE Inbound water!!!

The machine can operate using a water tank/reservoir or direct plumbing to a water line. The machine comes with a stainless steel inlet cold water hose to plumb your machine into your water line. Contact us for water treatment options as well as requirements to connect!

Overpressure valve (OPV)

Opens when too much pump pressure exists.  Excess water flows to the drip tray and not the water reservoir. This will allow operation of the direct water connection without having the reservoir fill with overflow water which can get moldy and require constant emptying and cleaning. Although the pump has an adjustment screw for regulation, the OPV is an additional feature to manage overflow that may occur by overpressure from the water company when the machine direct plumbed mode.

Plumbable Drip tray

Slides out easily to drain out or can be connected to a drain with changing of included adapter and attachment of included drain hose!

Only up to 15 amps required

Without the need for any additional switches or internal adjustments.

Commercial grade rotary vane pump

With the ability to make a direct water connection or use a water reservoir on the same machine with the movement of a lever under the machine. Includes stainless steel braided hose with 3/8″ male thread.

User programmed offset

The temperature regulation is at the coffee boiler, and the grouphead always has a lower temp. This feature allows the user to program this delta in temperature as every environment has a different offset.

Quality Characteristics and Specifications found VBM Style

True E-61 grouphead:
  • True Faema E-61 – The original E-61 by Carlo Ernesto Valente who brought the design from Faema to VBM. More heavy duty than other E-61 groupheads on the market.
  • Constantly heated – Hot water circulates from the heat exchanger through the grouphead and back to keep the grouphead and your portafilter nice and hot. As a result, the grouphead temperature constant and stable when you compare to other groupheads that have a built-in heating element.
  • Pre-infusion – Lever next to the grouphead activates a microswitch which turns on the pump to pump water through the coffee grinds. Pulling the lever half way up will open the valve to allow water into the grouphead without activating the pump. Please note that true pre-infusion requires the direct water connection whereby the water pressure from the water line creates true pre-infusion.
Separate wands for steam and hot water:
  • Multi-directional – Allows for more movement and flexibility. The wands connect to the valves on an angle to the side for even more flexibility. As a result, there is less risk of burning oneself from the exposed grouphead.
  • 2-hole steam tip – Allows for a slow gradual build-up of microfoam.
  • Rotational knobs – Allows for easier control of the intensity.
Separate pressure gauges:
  • Steam (boiler) pressure gauge – Located on the left. Measures from 0 to 4 bar. Optimal pressure is between 0.8 and 1.1. Regulated by a Mater pressurstat.
  • Brew (pump) pressure gauge – Located on the right. Measures from 0 to 16 bar. Optimal pressure is between 8 and 10. You can find the overpressure valve inside left near the vibration pump.
Separate indicator lights:
  • Heating light – Located on the left side. Indicates when espresso machine is heating. Once fully heated, there is no need to pay attention to the heating light unless temperature surfing.
  • Low water level light – Located in the middle. Indicates when the water level in tank/reservoir is low.
  • Power indicator light – Located on the right side. This will indicate when the machine is on.
Body panel:
  • Stainless steel – Polished to a mirror finish.
  • Easily removable – First remove the top cover. Then remove the 6 screws (3 on each side) and the wrap-around body slides off.
Extremely large stainless steel drip tray

Can be easily removed for cleaning. Grate stays on machine when pulling out drip tray so that it is one step removal to empty.

GICAR branded electronic water level control

Reacts to a .02 C of temperature change in the coffee boiler.

Rotary vane pump and commercial grade motor

Quieter than a vibration pump, but it is more expensive to replace. Hence, descaling is important.

Accessories included:
  • Portafilters – Single spout portafilter and a dual spout portafilter. The neck has the VBM brand imprint, similar to the one on the grouphead.
  • Filter baskets1-cup filter basket which holds approximately 7 grams. 2-cup filter basket which holds approximately 14 grams. Blind filter basket which you use for backflushing. 58 mm in diameter.
  • Tamper – A cheap plastic tamper. Manufacturers will normally include a tamper like this to keep the overall selling price of the machine low. We recommend upgrading to a better tamper.
  • Cleaning brush – A simple brush for cleaning the grouphead. Ergonomically designed with an angle for easier usage.
  • Coffee scoop – A simple plastic scoop if you are using pre-ground coffee.
  • Instruction manual – 3 separate manuals: a quick start guide, a detailed instruction manual, and a description of the machine components.

Additional information

Brand

Vibiemme

Height (inches)

16, approximate

Width (inches)

11, approximate

Depth (inches)

20, approximate

Weight (pounds)

84

Wattage (watts)

1600

Voltage (volts)

110

Boiler capacity (liters)

Coffee – 0.5, Steam – 1.9

Portafilter size (mm)

58

Tank capacity (liters)

2.1

Country of manufacture

Milan, Italy

Approvals

UL

  1. Shipping: Please note this machine ships on a pallet with curbside delivery only. It is just too heavy for UPS or FedEx to handle properly with the care you deserve on a high end purchase.
  2. Switch stages: To avoid any confusion on the operation of the machine:
    • Stage 0: Machine is off except low water light ‘may’ come on if water tank has low water.
    • Stage 1 w/ PID OFF: Brew boiler OFF and steam boiler OFF – used for initial refill without damaging the heating elements in either boiler.
    • Stage 1 w/ PID ON: Brew boiler ON and steam boiler OFF.
    • Stage 2 w/ PID OFF: Brew boiler OFF and steam boiler ON.
    • Stage 2 w/ PID ON: Brew boiler ON and steam boiler ON.
  3. No burn wands: We have decided to NOT offer no-burn steam wands because the typical internal diameter is about 50% less than a normal steam wand, and this usually affects performance times in steaming. In addition, the grouphead has a much greater area to get burned.
  4. 220 volt version: Sorry, 220-240 volt units are not available for ordering.
  5. Some assembly required: Feet are not attached to the machine.
  6. Direct connect mode:
    1. Setup: There is a screw in the water tank plate that the user can tighten to hold the plate down so the switch is activated to make the machine think there is water in the reservoir.
    2. Connecting water line: Water connection at bottom of machine is in the back left corner ~2″ from the rear and ~5 inches from the left side panel. The water connection elbow under the machine is 1/4″ male thread. The included stainless steel braided hose, is 46″ long and has the female fitting to connect to the water connection elbow. On the opposite end of the braided hose, there is a 3/8″ female thread fitting. It is best to purchase the V319 coupling to attach to your water line, and then attach the braided hose to the V319 coupling.
    3. Draining: This model has the capability to drain or not to drain. There is an included plug on the back of the drip tray. The plug can be removed or installed as desired. The machine’s drain pipe can be manually directed to drain either to the right or left side of the machine. In either direction, the drain pipe can be angled 4″ from either side. The included drain hose is 46″ in length and has a 1/4-3/8th inside diameter which slips onto the machine’s drain pipe. The drain hose needs to drop vertically 1″ for every 12″ it goes horizontal.
    4. Water line pressure: Should be regulated to be between 35 and 40 pounds for proper operation of this machine. Check with your local plumbing supply to advise on purchase so as to meet any local building codes. In addition, check with them about your local building code may require a backflow preventer (which does not allow boiler water to backflow into water supply).
    5. Water supply: Connection must be made to a cold water supply line only.

Maintenance

Documentation

Common Parts

Technical Support

Warranty Information

Who handles the warranty

Eligible warranty for Vibiemme home equipment is handled by 1st-line Equipment or representative thereof. If you have purchased your Vibiemme equipment from another retailer (not 1st-line Equipment), you must contact them first in order to get your equipment serviced under warranty.

What does the warranty cover

The warranty is limited to manufacturer’s defects only.

Regarding espresso machines: Limescale buildup can lead to problems with your machine. The warranty will not cover any repairs if our technicians find limescale in your machine. Although descaling can be a good alternative to remove limescale causing minerals (calcium and magnesium), we strongly suggest that prevention is the best form of maintenance. The reason is that descalers can cause wear and tear on components inside an espresso machine. This includes gaskets, o-rings, and other metal components. However, where there is a clog somewhere, descaling will be a necessity on the specified part, area, or entire machine.

Regarding coffee grinders: As with all coffee grinders, it is very important to only change grind settings when the unit is powered on and the burrs are in motion. If you do not do this, the burrs will ‘gunk’ up and require cleaning by you every time this occurs. Changing the grind settings when the burrs are not in motion will render the grinder to only produce very coarse grinds or no grinds at all. If this result occurs, this will be considered operator error for lack of following directions, and not be classified as a defective grinder.

When does the warranty expire

The manufacturer’s warranty on new equipment is good for a period of 1 year from date of receipt which covers parts. Labor warranties may vary depending on the company you purchase from. Vibiemme products may have an extended warranty limited to manufacturer’s defect and will specifically state the extended period of time on your receipt.

Where will my equipment be serviced

In most cases, your Vibiemme equipment must be sent to a repair facility. If 1st-line Equipment will be servicing your equipment, you must either ship it or drop off at our facility in New Jersey.

How do I send in my equipment in for repair

If you are inside the warranty period and have purchased it from us, please contact us. Please be ready to provide the following information: invoice# of purchase, model of equipment, and a detailed description of the issue.

If you are outside the warranty period, whether you have purchased the equipment from us or not, please order a diagnosis. Please note that wait times can be up to 8 weeks. Our technical support staff can have a back log of repairs. As an alternative we have a listing of 3rd party repair companies across the USA that can assist you.

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3 reviews for VBM Domobar Super Dual Boiler PID Espresso Machine – V4

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    1. 0 votes
      A

      There are 2 o-rings (page 6, part 26, part#GUARPICA) in the lever arm based on the diagrams, which most Vibiemme machines share the same grouphead. These should be greased with Petrogel.

      there is also a white gasket used for the larger nut (page6, part 5, part #GUARCAINGRTE).

    2. 0 votes
      A

      We have seen strange scenarios of discolored waters from different machines. There is no charcoal in any of our machines. In most cases, it is the machine reacting with the water being heated. We have seen small black particles, white particles, and sometimes green and bluish particles.

      From what we have seen, there are only black orings in the steam and hot water valves. If these were breaking up, steam and hot water would be leaking from the wand tips.

      Please keep in mind that we test every Vibiemme double boiler espresso machine with our softener water, and then we drain the water. If there were any particles, we would have seen them.

      We suggest changing your water by using the reservoir for a few weeks to see if it clears up.

    3. 0 votes
      A

      Coffee boiler only, 20-25 minutes.

      Coffee and steam boilers, 45 or more minutes.

      You can use an external timer to power on/off the machine. However, it is important to place a surge suppressor (1080 joules or higher) between the machine's plug and the timer to reduce electrical issues on the machine.

    4. 0 votes
      A

      We usually do not recommend a descaling unless needed to solve a problem. It is better to treat the water by softening it. If you need to descale, please follow these instructions.

    5. 0 votes
      A

      First step, please descale your machine in tank mode. Remove body cover by removing three screws on each side. Follow the hose behind the spout and look for the source of where the water is coming from.

      Second step, test the machine in tank mode with the plumbing disconnected from the machine and power off. There should be no leaks.

      Third step, power on machine for several hours and look for the leak in the hose. If there is a leak, then the boiler may be overfilled or the boiler refill valve is partially open allowing water to back track to the OPV. If there is water exiting the safety valve or vacuum breaker valve on top of the boiler, then the boiler is overfilling which points to a bad sensor, bad brain unit, or faulty wiring.

      Fourth, if no leaks in tank mode, reconnect direct plumbing water supply and leave power off. If it leaks, then to points to the OPV (check hose to drip tray spout) or overfilling of boiler as described above. If no leaks, power on and check. If it leaks at this point, then it is most likely an overfilling boiler.

      You can check for an overfilled boiler (steam side) by removing slowly hot water from the hot water spigot. Within a few ounces, the pump should kick in. If not, then the boiler could be overfilled.

      As soon as the pump kicks in, shut the hot water valve. In a few seconds, the pump should stop. If the pump stays on, it could be overfilling the boiler. To physically check, the machine needs to be cold , unplugged from the electrical outlet, and the direct water supply turned off, then remove the vacuum breaker valve and inspect visually.

       

       

       

    6. 0 votes
      A

      Please review the procedure here. It is very important that you check which gaskets is in your machine BEFORE ordering.

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