User manual for the JKB-AVK normally‑closed valve control box, covering installation, wiring, panel operation and safety switches.
The JKB-AVK normally‑closed valve control box is designed to switch NC‑type electric or solenoid valves and works with the JKB series gas‑detector system. It includes a wall‑mountable housing, green indicator lamp, open/close buttons, and several safety switches.
The manual provides detailed installation and wiring instructions, explains the front‑panel functions, and describes the lock and maintenance switches that prevent unauthorized operation and allow isolated testing of the valve. This manual is written in Chinese.
| Input voltage | AC 220V+10‑15% 50Hz |
|---|---|
| Maximum output current | 5 A |
| Installation method | Wall‑mount |
| Operating temperature | -40 °C ~ +70 °C |
| Dimensions | 300 × 250 × 150 mm |
Press the green open‑valve button; the valve opens and the green indicator lamp lights.
When the left‑hand switch is pushed to the “lock” position, all front‑panel buttons become inactive to prevent unauthorized operation.
Push the ship‑shaped switch on the right side to the “maintenance” position; the box will ignore any signals from the controller.