Bry-Air MiniPAC MP-1800 Desiccant Dehumidifier – 1800 CFM, 54 lbs/hr

MP-1800 MiniPAC Desiccant Dehumidifier — 1800 CFM High-Volume Industrial Moisture Control Without Refrigerant Limitations

The Bry-Air MiniPAC MP-1800 is an 1,800 CFM desiccant dehumidifier rated at 54 lbs/hr moisture removal — the highest-output unit in the MiniPAC series before stepping into Bry-Air's full-size industrial line. It is built for large manufacturing floors, cold storage warehouses, pharmaceutical production suites, and food processing facilities where refrigerant equipment fails to maintain required humidity levels due to low ambient temperature, high moisture loads, or the need to drive relative humidity below 30% RH. The MP-1800 operates on 460/480V 3-phase power and weighs 532 lbs — a full industrial unit in a self-contained package suited to mechanical room installation.

MP-1800 Desiccant Rotor Capacity and Safety Systems

• 1,800 CFM process airflow at 1.7" wc external static — handles large open manufacturing floors, warehouse sections, refrigerated loading docks, and multi-room pharmaceutical suites requiring continuous high-volume dehumidification
• 54 lbs/hr moisture removal under standard conditions — consistent extraction rate at low temperatures where a refrigerant unit at equivalent CFM would be cycling through defrost or shut down entirely
• 600 CFM reactivation airflow at 0.5" wc — reactivation airstream removes adsorbed moisture from the desiccant rotor and exhausts it to the exterior; 600 CFM reactivation exhaust duct must terminate outside the building envelope
• Desiccant rotor with stainless steel flange — water-washable media for on-site maintenance; stainless flange resists corrosion in high-humidity intake environments and during rotor washing
• Insulated process and reactivation airflow chambers — thermally separated to prevent humid reactivation exhaust from contaminating conditioned process air output
• 460/480V / 3-phase / 60Hz power requirement — dedicated 3-phase electrical circuit required; facility electrician must verify panel capacity and circuit sizing before installation
• 532 lb unit weight — floor-mounting in a mechanical room or equipment pad is standard; structural load-bearing must be confirmed for suspended or elevated installations
• Differential air pressure switch — monitors process airflow and triggers alarm or controlled shutdown if filter blockage or fan fault reduces airflow below operating threshold
• Safety thermostat on reactivation heater — protects heater elements from overtemperature during continuous 24/7 operation
• Reactivation cooldown sequence — heater elements cool before final shutdown to extend service life and prevent thermal shock
• Optional weather kit, room humidistat, and duct humidistat add-ons — weather kit enables outdoor or semi-exposed installation; humidistat options enable setpoint-controlled auto cycling

MP-1800 Applications: Pharmaceutical, Food Processing, Cold Storage, and Power Generation

Pharmaceutical manufacturers specify the MP-1800 for large tablet coating lines, granulation rooms, and bulk powder packaging areas where moisture above 35% RH causes caking, coating failure, and active ingredient degradation at process scale. Food processing facilities — including candy production, soft gelatin capsule manufacturing, and onion drying operations — rely on it for the precise, continuous humidity control that refrigerant equipment cannot maintain when production temperatures drop near or below 50°F. Cold storage and refrigerated logistics operators install it at loading docks and staging areas where condensation on product, pallets, and rack structures is a daily operational problem that refrigerant dehumidifiers cannot resolve at low ambient temperatures. Power generation facilities use desiccant units to protect generators, turbines, and HRSG systems from corrosion during standby periods. Museums, archives, and library storage rooms specify the MP-1800 where a smaller MiniPAC unit is under-capacity for the space volume and collection moisture load.

Desiccant vs. Refrigerant at 1800 CFM: Scale Considerations for Industrial Deployments

At 1,800 CFM, the difference in operating behavior between desiccant and refrigerant technology becomes a direct operational cost question. A refrigerant unit at this CFM rating requires substantial compressor capacity — and that compressor produces zero moisture removal during defrost cycles. In a cold loading dock or freezer staging area cycling through defrost every 30–60 minutes, a significant fraction of total operating time produces no dehumidification. The MP-1800's desiccant rotor operates continuously with no defrost interruption, delivering the full 54 lbs/hr extraction rate across the temperature range of the application. The reactivation exhaust — 600 CFM of warm, humid air — must be ducted to the exterior; returning it to the conditioned space negates the dehumidification output. 460/480V 3-phase power is required; single-phase service is not compatible with this unit.

Documents

MP-1800 Overview