The compact bar that can't idle
When the Boxer drips mid-shot or the steam goes soft, the whole counter feels it. We repair these compact Rockets all the time: group gaskets, blinded dispersion screens, joystick steam rebuilds, PID readings gone strange, pressure that sags under load. Most faults are known quantities with parts to match, and most are sorted at the machine in a single visit.
We'll get back to you today.
Thanks. We received your request.
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.
Something went wrong sending your request.
Please try again, or call us directly at (289) 217-3796 and we'll book your service over the phone. You can also email support@grajqevci.com.
Rocket Espresso · Compact heat-exchanger commercial espresso, plumbed-in
The Boxer is Rocket's compact commercial platform: full espresso capability in a footprint small counters can take. Rated for up to 200 cups a day and offered in multiple group configurations, it pairs with an external grinder and runs Rocket's signature joystick steam wands. Small specialty cafes, restaurant kitchens, and boutique hotels are its natural homes. On the bench it's a predictable machine: gaskets, screens, and steam seals do most of the wearing, and scale does most of the damage.
Why Grajqevci
Call in the morning and a technician is usually on-site before the day is out. Most Rocket Espresso Boxer jobs get diagnosed and fixed on the first visit.
Commercial coffee equipment is all we do, and Rocket Espresso Boxer 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.
Skip the wait
Trusted by Toronto's most demanding teams
Boxer faults we diagnose
Most Boxer service calls start with one of these. Each entry covers the usual cause and what the repair involves.
Thousands of lock-ups compress the group gasket until shots start weeping down the diffuser. Back-flushing the group comes first, then the dispersion screen and screw come out, a Rocket-spec gasket goes in, and the portafilter ears get a touch of food-safe grease. Several test shots prove the seal before we call it done; on a working Boxer this is as routine as service gets.
A blinded dispersion screen starves the puck of even flow, and the cup tells you before the machine does: channeling, weak body, uneven crema. We soak the screen in cafiza, brush it clear, and check the screw and group underside for the same buildup. If the screen is dimpled it gets replaced. Without a maintained softener on Toronto water, plan on this yearly.
A E61 group is only as stable as the brew boiler wrapped around it, and scale collecting around the group sleeve chokes that heat transfer. Descaling the brew boiler restores the path, then brew temperature gets measured at the group with a calibrated probe. If the readings still wander, the PID gets recalibrated against the same probe.
The Boxer's line-pressure pre-infusion lives or dies on inlet pressure and brew solenoid timing. We measure the supply at the inlet, confirm the pre-infusion solenoid actuates when the controller says it should, and check the timing in the service menu. Before-and-after pressure curves get logged with a portafilter gauge so the change is visible, not anecdotal.
Under sustained load the gauge tells the story: a worn rotary pump or a drifted OPV won't hold 9 bar. We measure at the group with a portafilter gauge, dial the OPV back to 9 bar, and replace the pump if its output stays under spec while loaded. The motor coupling and inlet strainer get a look while the chassis is open.
A Boxer pump that growls or vibrates is wearing either its motor coupling or its bearings. We inspect the coupling, measure pump output under load, and replace the pump or just the coupling depending on which is actually at fault. Catching it at the noisy stage usually saves the pump.
An OPV often drifts during a pump swap or simply over a long service life. Brew pressure gets measured at the group, the OPV adjusted to 9 bar under load, and stability confirmed across a 10-shot test. Thirty minutes of calibration that protects every shot the machine pours.
Twelve to eighteen months of scale on the brew element is usually what knocks the two PIDs out of step, because the controller starts compensating for a sensor reading it shouldn't trust. Both boilers get measured against a calibrated reference probe and descaled, then the setpoints are recalibrated in the service menu. The job ends with a 10-shot test proving brew temperature stays within 0.5 C.
Slow heat-up and steam that dies halfway through a pitcher mean the boilers are scaling out, which Toronto water does quickly once a softener lapses. We run a full descale on both circuits, measure heat-up time against spec, and check the heating element's resistance. If the element still draws low after descaling, replacement gets quoted; the level probes are cleaned in the same pass.
Unstable steam pressure usually comes down to a drifting steam-side NTC or scale insulating the steam element. We test the sensor against its resistance table, descale the steam circuit, and replace whichever component fails the test. Pressure gets verified at the wand afterwards under a sustained draw.
A puddle under a Boxer with no obvious source usually means the boiler manifold, a scale-weakened brass fitting, or the brew solenoid seat. We pressure-test the boilers, dry the chassis fully, and dye-trace the water until the leak point gives itself away. The failing fitting gets re-flared or replaced; retightening alone almost rarely holds.
Once a level probe scales over it stops conducting, and the autofill logic loses track of the boiler. We descale or replace the probe, watch a full autofill cycle complete, and confirm the boiler refills to the correct level. Quick fix, but ignoring it risks running an element dry.
The joystick steam levers wear at the pivot bushing, and you feel it before you see it: catching mid-travel, a lazy return, steam that doesn't quite shut off. We strip the assembly, fit a new bushing and microvalve seals, lubricate the linkage, and confirm clean on-off-on action. If the valve underneath is letting steam past the seat, it gets rebuilt in the same visit.
One weak wand next to one healthy wand points at scale in that steam path, a blocked tip, or a worn valve cartridge. The steam circuit gets descaled, the tip cleared, and the valve rebuilt, then pressure is verified at the wand. We check the tip threads too so the reassembled wand seals instead of hissing.
Erratic temperature readings come from a failing NTC sensor or a controller board whose contacts have corroded under steam migration. Testing the NTC against the resistance table at known temperatures settles which one it is; connectors get reseated or replaced and an out-of-spec sensor swapped. Drift that survives a new sensor means the controller board, which we quote as its own job.
A pre-infusion solenoid that rarely clicks is either a dead coil or a controller that isn't sending the timing signal. We test the solenoid directly, then trace the signal from the controller to rule out a timing fault. Whichever component fails the test gets replaced, and the pre-infusion ramp is verified on a gauge afterwards.
The polished stainless is why the Boxer earned its counter spot, so we treat the bodywork seriously. Light scratches get polished out, panels past saving are replaced through the Rocket distribution channel, and the refit uses the original fasteners. Done right, nobody can tell the machine ever had work.
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
By the numbers
Multi-location restaurant group. They cover us across all our QSR sites in the GTA, with consistent service and one consolidated bill.
*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
Nine times out of ten it's the group gasket, compressed flat by thousands of portafilter lock-ups. The fix is a Rocket-spec gasket, a cleaned dispersion screen, and a seal verified across test shots. It's routine wear, and one of the fastest repairs on the platform.
The joystick assembly wears at its pivot bushing and microvalve seals, and the lever starts catching or drifting back instead of snapping shut. We rebuild the assembly with a new bushing and seals rather than swapping the whole valve. Caught early it's a small job; ignored, it becomes steam that won't shut off.
Usually a failing NTC sensor or a corroded connector, not a dead controller. We test the sensor against its resistance table at known temperatures, so the answer is measured rather than guessed. If drift survives a new sensor, then it's the board, and we quote that separately before touching it.
Pressure that holds for one shot but sags under back-to-back extraction points to rotary pump wear or a drifted OPV. We measure at the group with a portafilter gauge, reset the OPV to 9 bar, and replace the pump only if the numbers say so.
With a maintained softener, an annual professional descale usually holds the line. Without one, the local water will coat the boiler within months, and you'll see it as slower warm-up and fading steam. The dispersion screens scale on the same schedule, so we do both together.
Yes. The Boxer's pre-infusion depends on inlet line pressure and brew solenoid timing, both of which we can measure and correct. We log the pressure curve with a portafilter gauge before and after, so you see exactly what changed.
Hidden leaks on this machine usually come from the boiler manifold, a scale-weakened brass fitting, or the brew solenoid seat. We pressure-test, dry the chassis, and dye-trace until the source shows itself. The failing fitting gets replaced or re-flared, because retightening alone rarely lasts.
Almost always. The wear items are cheap and the bones (boiler, groups, chassis) are built for a much longer life than five years. The exception is a machine that's run hard water its whole life without treatment; we'll tell you honestly if yours is in that category.
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 technician who's had a Boxer apart before.
Call (289) 217-3796 now →