Applies to: BrewBlast™ 40PPH, BrewBlast™ 70CPH
Does NOT apply to: BrewBlast™ 110CPH — see BrewBlast™ 110CPH – Specifications & Components
This article covers the technical specifications, key features, and external component layout for the BrewBlast™ 40PPH and 70CPH nitrogen generators. Both models share the same cabinet, controller, filter hardware, and mounting system. Use this as a reference during installation, startup, and routine service.
ℹ NoteThe 40PPH and 70CPH are physically identical. The only difference between them is rated output capacity — 40 pints per hour versus 70 cups per hour. All installation, maintenance, and service procedures are the same for both models.
Specifications
| Specification | 40PPH | 70CPH |
|---|---|---|
| Generation technology | PSA dual-bed (Pressure Swing Adsorption) | |
| Nitrogen purity | 99.8+% | |
| Rated capacity | 40 pints per hour | 70 cups per hour |
| N₂ storage pressure | 60–85 PSIG | |
| Electrical supply | 120 or 240V / 50–60Hz / 1-phase; 20A breaker (built-in) | |
| Compressor type | Integral / oil-free | |
| Ambient temperature range | 40–85°F | |
| Noise level | < 80 dBA | |
| Cabinet dimensions | 12.75" W × 12" D × 27" H | |
| Weight | 75 lbs | |
| Mounting | Wall mount or floor; built-in 3-gallon N₂ storage tank | |
| N₂ outlet connection | 1/4" NPT female | |
| Condensate drain | 1/4" OD tube; 2 ports, bottom right of cabinet | |
| CO₂ inlet (blender option) | 60–85 PSIG (min/max) | |
| Available gas blends (blender option) | 60/40 and 25/75 (CO₂/N₂) — factory set, not field adjustable | |
| Blend outlet pressure | 40–50 PSIG minimum | |
| Display | Digital controller screen; run hours, power, operating status | |
| Certification | UL 508A ICP; NSF | |
| Annual filter kit | FRP-001 | |
| Optional wall mount bracket kit | A05-TYP1-WH | |
Key Features
The 40PPH and 70CPH share the following internal and optional components:
- Oil-free air compressor — integral to the cabinet, with an engineered dampening system to minimize vibration and noise. Includes an air intake pre-filter rated for 1,000 run hours or 1 year.
- Dual-stage air filtration — a 5-micron particulate filter followed by a 0.1-micron coalescing filter. Both include auto-drain floats that discharge captured condensate through external 1/4" OD drain ports.
- PSA dual-bed nitrogen generation — molecular sieve beds cycle automatically to produce high-purity nitrogen on demand.
- ASME-stamped safety relief valves — positioned throughout the system to protect components from overpressure.
- Built-in 3-gallon N₂ storage tank — housed inside the cabinet with manual ball valves and an external gauge. Plumbed to an external ball valve so no internal plumbing changes are required by the installer.
- Automatic pressure cut-in/cut-out — a factory-preset pressure switch signals the PLC to enter standby when the tank reaches cutout pressure, and restarts generation when tank pressure falls to cut-in. No field adjustment required.
- McDantim™ dual-output gas blender (optional) — blends N₂ with CO₂ at 60/40 or 25/75 (CO₂/N₂) ratios, accurate to within 2%. Factory set; custom blends available. Requires CO₂ supply at 60–85 PSIG.
- BlastOff™ leak detection system — standard on all units. Monitors downstream gas lines and triggers an audible alarm with a "B.Off" display when a leak is detected. Shuts down the generator until reset.
External Components
The following components are accessible from the exterior of the cabinet. Items marked optional are only present if the corresponding option was ordered.
| Item | Component | Function |
|---|---|---|
| 1 | 1/4" NPT female port (optional) | Blend 1 outlet — 60/40 or 70/30 or 50/30 CO₂/N₂ (blender option only) |
| 2 | 1/4" NPT female port (optional) | Blend 2 outlet — 25/75 or 30/70 CO₂/N₂ (blender option only) |
| 3 | 1/4" NPT female port (optional) | CO₂ inlet (blender option only) |
| 4 | 1/4" NPT ball valve | N₂ outlet to beverage system |
| 5 | 1/4" NPT ball valve | N₂ outlet to external storage tank (optional separate tank connection) |
| 6 | Audible electric buzzer (optional) | BlastOff™ alarm sounder |
| 7 | Timer / digital display | Cumulative run hours; displays operating status and alarm codes |
| 8 | 0–100 PSIG pressure gauge | N₂ storage tank pressure |
| 9 | Amber indicator light | Standby — tank fully pressurized, generator idle |
| 10 | Red indicator light (optional) | BlastOff™ alarm indicator |
| 11 | Green indicator light (optional) | Unit operating — generator producing nitrogen |
| 12 | 1/4" OD through-wall fitting (×2) | Condensate drain — bottom right of cabinet; connect 1/4" OD tubing to route to a floor drain |
| 13 | 1/4" NPT safety relief valve | Tank overpressure protection (ASME stamped) |
| 14 | Power entry module | Main AC power supply input |
| 15 | Electrical panel and terminal block | Internal wiring and torque specification label |
| 16 | Buzzer and display screen label | Warning information and alarm reference label |
Indicator Light & Display Summary
| Indicator | State | Meaning |
|---|---|---|
| Green light | Illuminated | Run mode — generator is producing nitrogen and filling the storage tank |
| Amber light | Illuminated | Standby mode — tank full (60–85 PSIG), generator idle; will restart automatically when pressure drops 7–10 PSIG |
| Red light | Illuminated | BlastOff™ alarm — downstream leak detected; generator shut down |
| Display screen | "B.Off" in red | BlastOff™ alarm active — check downstream gas lines for leaks before resetting |
Optional Wall Mounting Bracket Kit
The optional mounting bracket kit (A05-TYP1-WH) allows the unit to be mounted on a standard 16" wall stud layout. The kit includes the following components:
| STS Part # | Description | Qty |
|---|---|---|
| 800-133 | 12" cabinet-mounting bracket (upper) | 1 |
| 800-134-B | 18" wall-mounting bracket (lower); 16" center-to-center stud holes | 1 |
| 800-129 | Type 1 lower wall mount bracket | 1 |
▲ AttentionThe unit must be secured at both the top and bottom flanges. Mounting only at the top is not sufficient and may result in the cabinet shifting or falling due to compressor vibration.
Related Articles
| Article | Applies To |
|---|---|
| BrewBlast™ Product Overview | All models |
| BrewBlast™ 40PPH & 70CPH – Installation & Startup | 40PPH, 70CPH |
| BrewBlast™ Alarms & Troubleshooting | All models |
| BrewBlast™ 40PPH & 70CPH – Annual Filter Replacement | 40PPH, 70CPH |
Contact South-Tek Systems
Phone: (910) 415-1880
Email / Ticket: support@southteksystems911.zendesk.com