Brew tap leaking at bar surface
The tap collar seal wears and weeps. We fit a new seal kit and verify clean operation.

Under-counter profiling, on bar
A Modbar EP tap will not hold its programmed pressure curve, or a tap has gone dead mid-service? We repair these profiling setups for design-led and competition bars: per-tap gear pumps, pressure transducers, tap seals, and the bar-to-module electronics. Tell us which tap and what it is doing when you call, and we arrive with the parts and the gauge to fix it on the first visit.
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A Grajqevci technician will get back to you today to confirm your machine and book the visit. If it's urgent, call us directly at (289) 217-3796.
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La Marzocco · Under-counter modular espresso (electronic pressure profiling)
The Modbar EP brings full electronic pressure profiling to the under-counter format. It runs programmable pressure curves per tap, driven by individual gear pumps and transducers in the cabinet below, with only the tap on the bar, rated to about 300 shots a day per tap. It is the modular expression of the Strada EP, chosen by design-led and competition-style bars. On the bench the profiling hardware is the wear and the diagnosis: the gear pumps, the transducers, and the controller, alongside the tap seals and the bar-to-module cabling.
Why Grajqevci
Call in the morning and a technician is usually on-site before the day is out. Most La Marzocco Modbar EP jobs get diagnosed and fixed on the first visit.
Commercial coffee equipment is all we do, and La Marzocco Modbar EP is one of the platforms we know best. Not a generalist guessing at a service manual. Genuine OEM parts, industry-standard procedures.
Flat rate for the visit, with parts billed separately. For bigger jobs you'll see a written quote on-site before we proceed.
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Modbar EP faults we diagnose
These are the Modbar EP faults that book real service calls, each with the cause and what we do about it at the machine.
The tap collar seal wears and weeps. We fit a new seal kit and verify clean operation.
Oils clog the screen at the tap. We pull it, clean it in cafiza, and replace it if worn.
Each tap runs its own gear pump for profiling, and wear flattens the achievable curve. We test each pump against the programmed curve and replace the gear set or full pump as needed.
Mineral deposit on the sensor port or a failing transducer throws the reading off. We clean the port, test the signal, and replace the transducer if it is out of spec.
Scale on the brew element drifts the temperature. We descale under-counter, test element resistance, and recalibrate the offset.
A scaled element in the paired Steam module. We descale it and replace the element if it is drawing low.
We pressure-test, dye-trace, and replace fittings.
A scaled level probe or a leaking solenoid. We clean the probe and replace the solenoid.
A failed solenoid, transducer, or controller output stops the curve. We diagnose, replace the failing part, and recalibrate.
A cable fault or a controller hang. We trace the cable, hard-reset, and reflash if needed.
We read the fault log and address the root cause, whether that is a pump driver, a sensor, or the board.
Mineralized flow meters. We clean them and reprogram.
Insufficient ventilation. We confirm the install meets spec and add ducting if it is needed.
Your coffee emergency ends here
Call or submit the form. We confirm your address, model, and the issue.
An experienced technician arrives, runs full diagnostics, and identifies the root cause.
You receive a flat, itemized quote. Nothing proceeds without your green light.
We complete the repair, run a test cycle, and walk you through what to watch for.
Parts on the truck
The record
Co-working operator across three GTA spaces. Member coffee is our amenity, so uptime is non-negotiable. They handle the calls before our members even notice.

*Estimated based on the approximate distance from our nearest service centre, average commute time, and median service-call length for one machine. Prices in Canadian dollars (CAD $). Final quote provided on-site after diagnosis.
FAQ
20 answers covering service, repair, parts, installation, warranty, and edge cases.
Updated August 2026
Something in the profiling chain has failed: the pre-infusion solenoid, the transducer, or a controller output. We diagnose each, replace the failing part, and recalibrate against a portafilter gauge so the curve runs the way you programmed it.
That tap's gear pump is likely worn. Each tap runs its own gear pump for profiling, and wear flattens the achievable curve. We test each pump against the programmed profile and replace the gear set or the full pump as needed.
Often. Mineral deposit on the transducer port or a drifting transducer throws the reading off. We clean the port, test the signal, and replace the transducer if it is out of spec, then reload the profiles after calibration.
No. It is usually a cable fault between the bar and the module, or a controller hang. We trace the cable, hard-reset, and reflash if needed. The under-counter hardware is usually fine.
The cabinet is where the work is. We access the under-counter module to reach the gear pumps, transducers, group, and controller, and only the tap and display sit on the bar. A clear cabinet makes the service straightforward.
Yes. The module needs ventilation clearance, and a tight cabinet makes it overheat. We confirm the install meets spec and add ducting if it is needed, which also keeps the electronics and pumps reliable.
Effectively, the profiling architecture is shared: gear pumps and transducers driving programmable curves per group or tap. The Modbar difference is the split layout, the tap assembly, and the bar-to-module cabling, which we service as part of the platform.
Yes, that is part of the job. We log the curve on a portafilter gauge before and after the work and re-verify your reference profile before sign-off, so the tap pours the curve you built, not just a working one.
Flat rate for the visit, parts billed at their actual cost on top. You'll hear the rate when you book, and for bigger jobs we quote in writing on-site before any work starts. No estimate that balloons mid-job.
Same-day. Call in the morning and a technician is usually on-site before the day is out; calls placed later in the day book for the next morning. Urgent breakdowns get priority routing.
The GTA and most of the Golden Horseshoe: Toronto through Mississauga, Vaughan, and Markham, out to Oshawa, Hamilton, and Niagara. If you're not sure you're in range, call and we'll tell you straight.
No. We work call by call. Plenty of customers put us on a maintenance schedule eventually, but that's their choice after seeing the work, never a requirement.
Parts carry their manufacturer warranty, and we stand behind our labour: if the same fault recurs, call us and we'll review it. Specific terms are discussed upfront on each job, not promised in marketing copy.
On-site whenever possible, which is most of the time. If a job genuinely needs the bench, like a full boiler rebuild or major electronics work, we'll say so before anything leaves your building.
Call us or send the form on this page. We confirm the machine, the fault, and a time window the same day. If it's urgent, say so and we'll route the nearest technician.
Diagnosis first: we confirm the fault, tell you what caused it, and quote the fix before touching a wrench. Most repairs finish in that same visit because the common wear parts ride on the truck.
High-wear parts for the platforms we service constantly ride on the truck. Anything else we order, usually next-day where suppliers allow, and we tell you the lead time before committing you to anything.
Usually, yes. We service legacy machines for as long as parts can be sourced, and we're honest when a repair stops making financial sense against a replacement. You get the math, you make the call.
Often, but that's not the pitch. We quote against the actual work, not a factory pricing book, and we'll tell you when a manufacturer warranty claim is the better route. Transparency is the value; the price usually follows.
Yes, and we do it by default on the way out. Half of repeat faults trace back to skipped daily cleaning or wrong routine, so the technician walks your team through what actually matters before leaving.
One call reaches a tech who understands under-counter pressure profiling.
Call (289) 217-3796 now →