What is your response time to Sunnyvale from San Ramon?

It is about 45 to 50 minutes via 680 and 237 outside of commute hours. Sunnyvale groups naturally with my Mountain View, Cupertino, Los Altos, and San Jose calls, so there is usually a same-day or next-day slot when I am already working that loop. If the machine is down during business hours, say so when booking and we slot it as priority.

Can you do the repair before we open so we do not lose slush sales?

Yes, and for Sunnyvale shops that is the slot I recommend. Most Donper repairs, including seals, gear motors, fan motors, and sensors, take one visit. An early appointment means the machine is reassembled, sanitized, and pulling product back down to temperature before your first customer orders.

Do you keep Donper parts in stock, or does everything get special-ordered?

I stock the high-failure parts: auger seals, common gear motor assemblies, temperature probes, and condenser fan motors for the popular XC slush and D series soft serve models. Compressors, boards, and model-specific pieces are ordered after diagnosis with a written quote and a firm return date. The diagnostic fee is waived once you approve the repair, whether it finishes same day or on the return visit.

DONPER · SUNNYVALE

Service · All Donper Models

Donper Frozen Beverage Machine Repair · Sunnyvale, CA

Donper slush and soft-serve repair in Sunnyvale, from Murphy Avenue counters to campus cafes.

$75 diagnostic (waived with repair)
Same or next-day best effort
CSLB #1136642

Call (925) 999-4095

Donper in Sunnyvale

Donper commercial service.

Sunnyvale works its Donper machines hard. The dessert and boba shops along El Camino Real run slush programs year round, the cafes around historic Murphy Avenue add frozen drinks every summer, and the corporate cafeterias serving tech campuses run soft serve through lunch five days a week. These are duty cycles the machines can handle, but only if the wear parts get replaced before they fail instead of after.

The pattern I see in Sunnyvale specifically is deferred maintenance on machines that never get a quiet season. A shop that is busy every single day never wants to take the machine down for a seal, so the seal fails on its own schedule, usually mid-rush. We try to break that cycle with early morning appointments and honest advice about which parts are actually near end of life, backed by a written quote so you can plan the spend.

The company is ADRIUM Service Solutions, owner Andrew Kuznetsov, based in San Ramon. EPA Section 608 Universal certification covers the refrigerant side of Donper work legally and properly, CSLB #1136642 on record. Seven days a week, $75 diagnostic waived with repair, one year warranty on repairs.

Common repairs we do

What we close on the truck.

Gear motor wear on machines running double shifts. High-volume Sunnyvale shops put more hours on a Donper drive train in a year than a typical location does in three. The gear motor gets noisy first, then the auger speed becomes inconsistent, then it stops. If your XC series machine has started growling or the slush texture varies through the day, that is the drive train asking for attention while it is still a planned repair instead of a dead machine.
Condenser fan failure in tight back-of-house spaces. A lot of Sunnyvale counters tuck the machine into a narrow back bar where the condenser fan pulls in dust, boba starch, and whatever else is airborne. The fan motor bearings load up and slow down, head pressure climbs, and freezing performance drops on hot afternoons exactly when demand peaks. I replace the fan motor, clean the coil, and check the refrigerant side to confirm the compressor was not damaged running hot.
Control board and display faults after power events. Donper control boards do not love the power quality in older commercial strips, and I see boards with dead displays or phantom error codes after outages and surges. Before quoting a board I verify the failure is really electronic, because sensor faults and wiring issues mimic board problems. When it is the board, I quote the exact part in writing and install a surge protector conversation along with it.

Models we service

Donper product lines.

Slush and soft-serve machines

Pricing and warranty

What it costs. What we stand behind.

$75

Diagnostic visit. Waived when you book the repair with us.
Written

90 days on consumables, 1 year on major parts, 2 years on sealed-system rebuilds. Quoted in writing before work starts.
CSLB

#1136642. Bonded and insured. We file warranty paperwork when applicable.

Nearby cities

Donper service in neighboring cities.

FAQ

Donper in Sunnyvale questions, answered.

What is your response time to Sunnyvale from San Ramon?

It is about 45 to 50 minutes via 680 and 237 outside of commute hours. Sunnyvale groups naturally with my Mountain View, Cupertino, Los Altos, and San Jose calls, so there is usually a same-day or next-day slot when I am already working that loop. If the machine is down during business hours, say so when booking and we slot it as priority.
Can you do the repair before we open so we do not lose slush sales?

Yes, and for Sunnyvale shops that is the slot I recommend. Most Donper repairs, including seals, gear motors, fan motors, and sensors, take one visit. An early appointment means the machine is reassembled, sanitized, and pulling product back down to temperature before your first customer orders.
Do you keep Donper parts in stock, or does everything get special-ordered?

I stock the high-failure parts: auger seals, common gear motor assemblies, temperature probes, and condenser fan motors for the popular XC slush and D series soft serve models. Compressors, boards, and model-specific pieces are ordered after diagnosis with a written quote and a firm return date. The diagnostic fee is waived once you approve the repair, whether it finishes same day or on the return visit.

Need Donper service in Sunnyvale?

Tell us what is broken. We will quote it.