Steris Amsco 3085 SP, Maintenance Manual

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7-15
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10. Loosen each solenoid housing using deep socket
(24 mm). With lint free cloth under each housing
to catch any leakage, unthread each housing by
hand and remove from valve manifold.
11. Wipe up any spillage.
12. Remove solenoid stem on control board side by
sliding stem off valve slide.
13. Remove washer and pressure spring.
14. Remove solenoid stem and slide by pulling right
stem out of manifold block.
15. Inspect plunger for wear and replace as necessary.
16. To replace valve, reverse this procedure.
7.18.2 S9 and S10
NOTE: The numbers in parentheses () refer to items found
on Figure 23 located in Illustrated Parts Breakdown (refer
to Tab) unless otherwise noted.
1. Disconnect the ac power.
2. Remove shroud as described in S
ECTION
7.4,
S
HROUD
R
EMOVAL
/ R
EPLACEMENT
P
ROCEDURES
.
3. Raise table to maximum position.
4. To support raise/lower mechanism, insert
screwdriver through access hole at back of column.
Slowly lower table until it contacts screwdriver.
5. Position table in sufficient left-side tilt to access
table control board mounting screws.
6. Remove jam nut (19 mm) holding solenoid coil.
7. Remove coil and safely set aside.
8. Loosen each solenoid housing using deep sock
(24 mm). With lint free cloth under each housing to
catch any leakage, unthread each housing by hand
and remove from valve manifold.
9. Remove pressure spring from the plunger.
10. Remove plunger by sliding it off of spool.
11. Replace spool, O-ring, plastic seat and brass
washer as necessary, noting orientation of each.
12. When reinstalling spool, O-ring, plastic seat and
brass washer, ensure they are reassembled in
plunger housing as a unit and in proper order
before installing plunger housing.
13. To replace valve, reverse this procedure.
7.18.3 S10 Return Spring
This procedure only pertains to the Bieri 3 Hydraulic
System. The earlier Bieri 1 and 2 Hydraulic Systems
did not use a return spring. The Bieri 3 Hydraulic
System can be identified by the spring guide on the
sides of the second manifold section.
NOTE: Refer to Figure 23 located in Illustrated Parts
Breakdown (refer to Tab) and Figure 7-5.
1. Unscrew spring guide (see Figure 7-5 and Item 24)
on side of Control Block #2 (second block down)
toward back section.
2. Remove old spring (23) and replace with new
spring (23).
3. Replace spring guide (24).
Figure 7-5. S10 Return Spring Replacement
CAUTION – POSSIBLE EQUIPMENT
DAMAGE: When replacing solenoid valves,
carefully remove retaining washer and
pressure spring to prevent washer and
spring from quickly expelling from the
valve block.
CAUTION – POSSIBLE EQUIPMENT
DAMAGE:
Use care when unthreading
solenoid valve housing from the valve
manifold. Plunger is equipped with a spring
which may expel from the housing upon
removal of
the plunger housing.
CAUTION – POSSIBLE EQUIPMENT
DAMAGE:
When unscrewing spring guide
from side of Control Block #2, threads may
run out before spring is fully relaxed. Hold
spring guide tightly to prevent housing,
spring and pin from flying out.
Spring Guide