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Spaceman Electrical Guide — All Models

Every Spaceman machine ships with a cord and plug. Have a licensed electrician install the correct receptacle, electrical line, and breaker to power your machine. Supplying improper power leads to machine failures not covered under warranty and may cause irreversible damage to electrical components.

Special advisory — supply clean, stable power. If you use a generator or are in an area prone to brownouts, power dips, spikes, or other “dirty” power, your machine may behave oddly. Some cases are resolved by upgrading building wiring (e.g., older buildings); others need extra equipment between building power and the machine, such as a buck-boost transformer to stabilize power. On a generator, supply enough power so the voltage doesn’t drop too low when high-amp components like the compressor start. See our Generator Requirements guide. GFCI outlets are not recommended — they are less reliable and can cause operation issues.

Electrical requirements by model

Model (all configs) Phase Volts (AC)* Plug (NEMA) MFS** MCA*** Power (kW)
SM-6210 1 110-115 5-20 20 16 1.6
SM-6236 1 208-230 L6-20 20 15 2.7
SM-6235 1 208-230 L6-20 20 18 3.6
SM-6250 1 208-230 L6-20 20 18 3.6
SM-6378-1(D) 1 208-230 L6-30 30 24 4.9
SM-6378-3 3 208-230 L15-30 30 23 4.8
SM-6450 1 115 5-20 20 15 1.3
SM-6650 1 115 5-20 20 15 1.3
SM-6690 1 208-230 L6-20 20 15 2.2
SM-6455 1 115 5-20 20 16 1.6
SM-6695 1 208-230 L6-20 20 17 2.7
SM-6696 1 208-230 L6-20 20 17 2.7
SM-6795 1 208-230 L6-30 30 24 4.0
SM-6795D 1 208-230 L6-20 x2 20 24 4.0

* Volts: nominal certified range and recommended for optimal performance. Machines can operate at ±10% (104–126V for 115V models; 200–242V for 208–230V models). Operating outside the nominal range may cause excess wear on the motor and compressor and premature failure — contact Spaceman USA Technical Support with concerns.
** MFS = Maximum Fuse Size   *** MCA = Minimum Circuit Ampacity
SM-6795D has separate freezing, cooling, electrical, and drivetrain systems for 100% redundancy.

Power connection

  1. Verify incoming electrical supply is wired the same way on the circuit breaker or wall receptacle before plugging in or switching on power. For 208–230V single-phase machines there are two hots and one ground; for 110V single-phase there is one hot, one neutral, and one ground. Refer to the wiring diagram inside the machine side panel to verify polarity.
  2. Connect all wires to the receptacle or breaker (including neutral & ground bus terminals). Follow local electrical codes. Ensure connections are secure and protected from moisture/spillage — always use a drip loop or other approved protection.
  3. Turn power on and, with the machine completely disassembled (all parts removed from the freezing cylinders), use WASH mode to confirm the motor(s) turn in the correct direction — a small red arrow on each motor pulley indicates proper rotation.
  4. 3-phase machines only: if rotation is wrong, switch any two of the L1/L2/L3 lines on the plug or receptacle and recheck. The machine will not operate properly and will be damaged if a motor spins the wrong way.
Warning. Running WASH mode with panels off and/or the dispensing door removed is dangerous. Keep hands and tools clear of the inside of the machine and the freezing cylinders at all times.

Reference guide adapted from Spaceman USA documentation. For model-specific questions, contact a Howdy Brewer specialist.