This manual describes the installation, electrical connection, operation and maintenance of Maile's compact gas warning systems covering models GW 11‑20 with one or two alarm stages. It includes safety warnings, mounting guidelines, wiring details, sensor installation and calibration procedures.
Key sections cover mounting height and method, power supply options, sensor wiring requirements, alarm configuration, troubleshooting, and optional accessories such as external power supplies and signal devices. This manual is written in German.
| Power supply (standard) | 230 V / 50 Hz AC |
|---|---|
| Optional power supplies | 12 V / 24 V DC or 110 V / 50‑60 Hz AC |
| Maximum sensor voltage (semiconductor) | 6 V DC |
| Maximum sensor voltage (electrochemical) | 12‑17 V DC |
| Mounting height | 1.60 m – 1.80 m |
| Minimum cable cross‑section | 1.5 mm² per conductor |
| Two‑stage alarm thresholds | 10 % and 20 % of lower explosion limit |
It is designed for a standard 230 V / 50 Hz AC supply, with optional 12 V / 24 V DC or 110 V / 50‑60 Hz AC options.
The mounting height should be between 1.60 m and 1.80 m.
A minimum cross‑section of 1.5 mm² per conductor must be used.
The system can have one or two alarm stages; for two‑stage units the default thresholds are set to 10 % and 20 % of the lower explosion limit.