Operation Manual

17
A7 MIG Gun 500-w© Kemppi Oy 2017 1712
OPERATING MANUAL
12.3.4 Maintaining the coolant shutoff valve
This section describes how to service the coolant shuto
valve.
The system parts are depicted in the gure below:
Figure 11: Maintaining the coolant shuto valve
6 4
1
7
8
5
32
1. 2 valves
2. 2 pressure springs
3. 2 set screws, M8×8
4. 2 clamping screws, M4×5
5. Cable assembly
6. 4 O-rings, 7×1
7. Max. screw-down depth
8. 2 valve balls
Proceed as follows:
1. Loosen the clamping screw (4).
2. Unmount the valves (1).
3. Unscrew the set screws (3).
4. Unmount the pressure springs (2) and valve ball (7).
Clean the valve ball (7), and replace it if necessary.
5. Check the O-rings (6) for damage, and replace
them if necessary.
6. Re-insert the valve ball (8) and pressure spring (2).
7. Screw the set screws (3) back on. Check the
maximum screw-down depth (7).
8. Mount the valves (1) in place, and secure them with
clamping screws (4). Observe the max. tightening
torque, M = 2 Nm.