Page 193
STAT
IM
2000/2000S Service Guide
96-108639 Rev 3.0
9. Solenoid Valve and Pressure Transducer
STATIM 2000/2000S/2000 G4 Service Guide
Solenoid Valve and Pressure
Transducer
Solenoid
STAT
IM
units have been manufactured using one of two types of solenoid valve:
t Type A is a two part square bodied unit (fitted to very early units).
t Type B is a two part cylindrical bodied unit (see Figure 1).
If a Type A unit requires servicing or has failed, replace it with a Type B solenoid valve ONLY.
Inspecting and Repairing the Type B Solenoid Valve
The solenoid valve assembly may be inspected and/or repaired while in the unit. To inspect and/or
repair the assembly, proceed as follows (see Figures 1 and 2):
1. To determine that the solenoid is working, test the solenoid valve by using the solenoid
valve switch/button on the Control box. When the switch is activated, the sound of the
coil energizing can be heard. Note: the cassette must be removed or unseated so that the
microswitch is not active, as the solenoid will be permanently energised and will not be
affected by the control box switch/button.
TIP: The solenoid may be also be activated by shorting P1-18 to ground on the PCB.
1
2
3
11
4
6
10
9
8
7
Type B Solenoid Valve
1. Nut
2. Yoke
3. Coil
4. Plunger tube
5. Plunger tube wrench
(not shown)
6. Plunger
7. Plunger spring
8. Bronze disc
9. O-ring
10. Plunger seal
11. Valve body
Figure 1
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