SES 2000 AUTOCLAVE Part 3
ST-SM8l Page 21 of 43
PART 3 MAINTENANCE
Air Valve (Fig. 3, item 6)
3.9 The air valve is fitted in the manifold at the rear of
the sterilizing chamber. To remove the air valve:
a Remove plumbing connection on reservoir side
(hold large hexagon body stationary while
removing the pipe nut).
b Use the small hexagon body to unscrew valve
from manifold.
Note
Do not disturb the relationship between the large
and small hexagons as this would upset the
spring calibration inside the valve.
c When fitting replacement valve, use PTFE tape to
make a leakproof joint.
Note
It is recommended that an air valve suspected of
unsatisfactory performance is renewed.
In an emergency, or where it is known that the
valve has been subjected to sticky materials, it
can be washed in a solvent such as white spirit,
methylated spirit or paraffin. Ensure that the valve
is dried thoroughly before refitting it.
Door Interlock Switch (Fig. 5)
3.10 The door interlock microswitch is operated by an
actuator lever. To remove and dismantle the microswitch
actuator lever proceed as follows:
a Loosen clamp screw (6) and slide microswitch
actuator lever (5), complete with leaf spring (4),
from actuator lever (2), and then remove nylon
washer (3).
b Withdraw actuator lever (2) from the front of the
panel, and remove nylon washer (1).
c Remove clamp screw (6) and washer (7) to release
leaf spring (4).
d Remove nut (8) and striker screw (6A).
e Inspect, and renew all defective items.
Reassemble and adjust the mechanism as follows:
f Apply a smear of silicone grease (MS4) to both
sides of nylon washer (1) and position it on spindle
of actuator lever (2).
g Apply a little silicone grease on spindle of actuator
lever (2) and slide the lever through the front
panel. Apply a smear of silicone grease to both
sides of nylon washer (3) and position it on spindle
of actuator lever (2)
h Fit leaf spring (4) to microswitch actuator lever (5),
with clamp screw (6) and washer (7).
i Fit striker screw (6A) and nut (8) to microswitch
actuator lever (5).
j Fit microswitch actuator lever (5) to actuator lever
(2) ensuring that the mechanism is located between
limit stops (10).
k Ensure leaf spring (4) is positioned and adjusted
to keep microswitch actuator lever (5) clear of
microswitch (9).
l While tightening clamp screw (6A) using thread
lock (part number 306033), twist levers (2) and (5)
apart to minimise any slack between the flats on
the spindle and lever.
m Set microswitch actuator lever assembly by closing
the door and revolving the door knob, to lock the
door. Using a 5BA spanner, adjust striker screw
(6) until the head of the screw just touches the
body of the microswitch. Then undo striker screw
(6) a ¼ turn and tighten locking nut.
n Open and close the door and check that
microswitch (9) operates correctly.
1 Nylon washer
2 Actuator lever
3 Nylon washer
4 Leaf spring
5 Microswitch actuator lever
6A Striker screw
6 Clamp screw
7 Washer
8 Nut
9 Microswitch
10 Limit stops
Fig. 5 Door Interlock Switch
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