The copper-boiler classic
First shots running cold on the RE A Timer? That's the thermosiphon asking for attention, and it's the kind of repair we do constantly. Scale management on the big copper boiler, transducer recalibration, pump and OPV setting, cool-touch wand rebuilds, dose timer faults: classic HX problems with well-worn fixes, usually finished in one visit.
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Rocket Espresso · Heat-exchanger commercial machine with electronic timer
The RE A Timer is Rocket's classic heat-exchanger machine: one oversized copper boiler doing brew and steam at once. The boiler runs 14.5 L on the 2-group and 23 L on the 3-group, with thermosiphon-fed groups, a digitally adjustable pressure transducer, electronic dose timing, and cool-touch wands that spare the barista's knuckles. It's the traditional architecture in the range, which is exactly its appeal: fewer systems, long service life, and decades of accumulated HX know-how behind every fault it can throw.
Why Grajqevci
Call in the morning and a technician is usually on-site before the day is out. Most Rocket Espresso RE A Timer jobs get diagnosed and fixed on the first visit.
Commercial coffee equipment is all we do, and Rocket Espresso RE A Timer is part of the weekly rotation. 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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RE A Timer faults we diagnose
Heat-exchanger machines fail in familiar ways. These are the RE A Timer calls we take most, with the cause and the fix for each.
A cold first shot means the thermosiphon loop is scaling up and flow from the heat exchanger is being strangled. We descale the brew circuit, flush the thermosiphon, and verify brew temperature with a portafilter probe. The classic HX behaviour comes back: stable groups fed quietly by the boiler.
Gasket wear on the RE A Timer announces itself as drips down the group during the shot. We replace it with the Rocket-spec part, lubricate the contact points, and verify the seal under pressure. A small job when it's caught early.
A rotary pump drifting low shows up as shots that run slow despite a good grind. We measure output, adjust the OPV to 9 bar, and replace the pump if it can't hold spec under load. The OPV and pump get set as a pair so the calibration sticks.
With one oversized copper boiler doing everything, scale hits this machine's heat-up and steam at the same time. A full descale comes first, then element resistance gets measured against spec, with replacement quoted if it draws low. A 14.5 or 23 L boiler takes a while to warm even when healthy, so we benchmark against spec rather than feel.
The pressure transducer drifts when scale reaches its sensing port or the unit itself ages out. Cleaning and recalibration fix most cases; persistent drift earns a replacement. Steam pressure on this machine is digitally set, so the transducer has to tell the truth.
Dose drift on the timer means a flow meter scaling up and miscounting pulses. We clean the meter and reprogram each dose against a target volume by weight, then verify across repeated pours. If the meter is damaged it gets replaced before recalibration.
The insulating sleeve on the cool-touch wands fatigues with years of heat cycling and starts cracking or rattling. We replace the sleeve assembly through the Rocket channel. The burn protection is the point of these wands, so it's worth keeping intact.
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
Property management portfolio with executive-floor espresso programs. Their technicians are the only outside vendors we let in our boardroom-adjacent kitchens.
*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
21 answers covering service, repair, parts, installation, warranty, and edge cases.
Updated July 2026
That's the thermosiphon loop scaling up, restricting the hot-water circulation that keeps the group at temperature between shots. We descale the brew circuit, flush the loop, and verify with a portafilter probe. It's the most characteristic HX fault there is, and one of the most satisfying to fix.
A healthy machine needs a fair stretch to bring 14.5 or 23 litres of water to temperature, so don't panic at a long warm-up by itself. What matters is change: when the machine takes noticeably longer than it used to, scale or a tired element is the reason. We benchmark against spec rather than feel.
The insulating sleeve that keeps the wand grabbable fatigues with years of heat cycling, then cracks or rattles. We replace the sleeve assembly through the Rocket channel. The steam valve behind it is serviced separately and rarely fails at the same time.
The electronic timer doses by flow meter pulses, and a scaling meter miscounts. We clean the meter, reprogram each dose against a target volume by weight, and verify across repeated pours. If the meter itself is damaged, it gets replaced first.
Yes, within the architecture's rules: brew temperature on an HX follows boiler pressure, which the RE A Timer sets through a digitally adjustable transducer. We set the pressure to land your target brew temperature, verified at the group with a probe. It's less push-button than a PID brew boiler, but it's repeatable once set.
Both wands weak together points upstream of the wands: boiler-wide scale or a heating element losing output. One wand weak alone is local to that wand's valve and tip. The pattern tells us where to start before we've opened a panel.
It's straightforward for someone who does it regularly: the rotary pump and motor are accessible, and we set the OPV as a matched pair with the new pump. Plan for the machine being down for the visit, not for days. Pressure is verified at the group before we leave.
Generally yes. One boiler means one set of scale problems, fewer sensors, and a fault list technicians have known for decades. The trade is less independent temperature control, which is exactly the simplicity many restaurants want. Service costs tend to be the lowest of Rocket's bigger machines.
Usually, yes. Most drift is scale at the sensing port, and cleaning plus recalibration brings the reading back honest. We only replace the transducer when drift returns after a clean calibration, which is the minority of cases.
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 in most cases. 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.
Classic machines deserve technicians who grew up on them.
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