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General| Brand | Johnson Controls |
|---|---|
| Model | Hitachi MW-NP282A3 |
| Category | Air Conditioner |
| Language | English |
Do not adjust or bypass safety devices; ensure they are in place and functioning correctly for safe operation.
Unauthorized modifications void warranty, create hazards, and may violate regulations or standards.
Avoid locations with explosive atmosphere, fire hazards, corrosive gases, high acidity, or decomposition gases.
Ensure no flammable materials or open flames are present before brazing; use safety guards during operation.
Use only approved refrigerants. Non-approved substitutes void warranty and increase injury risk.
In small rooms, take measures to prevent refrigerant exceeding maximum allowable concentration per ASHRAE standards.
Perform refrigerant leak tests before installation completion. Ventilate if leaks occur and contact service.
Connect piping securely before starting the compressor. Avoid high pressure from premature compressor activation.
Tighten flare nuts with a torque wrench to specified values. Do not overtighten to prevent cracking and leakage.
Never loosen threaded joints or open pressurized parts. Dismantle piping only after compressor stops.
Refer to wiring diagrams and instructions. Improper connections or grounding can cause serious injury or death.
Open and tag all disconnect switches before servicing. Verify power is off using a meter.
Use an exclusive power supply at rated voltage. Install circuit breakers with specified capacity and tighten terminals.
Leaking refrigerant can form toxic gases with sparks or cause suffocation as it's heavier than air.
