This manual covers safety precautions, installation requirements, and proper use of the Hitachi RD-21B commercial dehumidifier. It includes warnings about grounding, avoiding combustible materials, and handling in high‑humidity or acidic environments.
The guide explains operating procedures, regular maintenance, and how to diagnose and resolve common faults. It also provides contact information for service and warranty support. This manual is written in Japanese.
| Model | RD-21B |
|---|---|
| Maximum ambient temperature (automatic stop) | 40 °C |
| Minimum ambient temperature for restart | 35 °C |
The unit will automatically stop operating when the ambient temperature is above 40 °C.
Lower the ambient temperature below the limit (around 35 °C) and then restart the unit.