COINWASH TD30X30, Service Manual

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40. Heating
40
Service
manual
487 0329 81
16
Replacement of gas valve
To replace the gas valve follow the procedure below:
1. Shut off the manual valve at the back of the dryer.
2. Disconnect the electrical power supply.
3. Dismount the back panels on the dryer.
4. Fig. 1. Unscrew screw
A
from the control box.
5. Pull the control box out of the valve.
6. Fig. 2 or fig. 3. Take the union joint
B1 = top dryer
or
B2 = bottom dryer
apart.
7. Fig. 4. Remove the screw
C
on the side of the nozzle retaining plate.
8. Pull the retaining plate toward the rear of the dryer to release gas pipe with
nozzle.
9. Remove nozzle and keep it for later mounting.
10. Replace the valve.
11. Remount nozzle.
12. Tighten the union joint
B1
or
B2
(50Nm).
13. The nozzle retaining plate must be pushed back in the right position and firmly be
secured with the screw
C
.
14. Push the control box back into place. Be careful not to bend the terminals.
15. Install the control box retaining screw removed in step 4.
Testing for leaks
After replacement all the joints which were taken apart have to be leak tested.
Use approved leak testing materials and techniques.
Adjusting the gas valve
The new gas valve has to match the machine.
Adjustment see section earlier in this section.