ASP STERRAD 100, Service Manual

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2. During the diffusion stage, use a Fluke model 80T-150U, or
equivalent, to measure the door temperature at the back surface of
the door in the lower right corner (when viewed from the front), 40
mm in from the edges.
3. During the diffusion stage, adjust the door temperature for a reading
of 46° C
±
2°C using the top trim pot (R5) on the connector
distribution PCB. Clockwise rotation increases temperature about
0.5°C per turn.
4. With a Fluke model 80T-150U, or equivalent, measure the chamber
temperature adjacent to the thermistor located by the chamber rib.
5. During the diffusion stage, adjust the chamber temperature for a
reading of 46°C ±2°C using the center trim pot (R6) on the connector
distribution PCB. Clockwise rotation increases temperature about
0.5°C per turn.
6. Initiate a second empty chamber cycle and verify that the door and
chamber temperatures meet specification. Repeat this section if
necessary.
Door/Chamber Temperature (Block 2)
1. Remove the system panels. Begin an empty chamber cycle. Make
sure the top, back, front and one side panel are in place to achieve a
true temperature profile.
2. Check the voltage at chamber heater connector P115. It should read
208 ±10%VAC. Check the voltage at door heater connectors P95. It
should read 208 VAC. (These are nominal readings only to check
shorts and opens).
4 4
Note
: Block 2 has 4 J-type thermocouples connectors. T/C 1
and T/C 2 are located at the right rear of the frame near
the chamber. T/C 3 and T/C 4 are located on the lower
right of the door.
4 4
Note: On STERRAD 100 S Systems, perform the steps below
during the second injection stage, not the diffusion stage.
3. Connect an Omega thermocouple tester (J-type) to T/C 1. Verify that
the temperature measured during the diffusion stage is 42º - 50º C.
Repeat for all 4 thermocouples listed in the note above.
4. Using T/C 2 adjust the chamber temperature to read 42º - 50º C
using the center trim pot (R3) on the connector distribution PCB.
Rotate the trim pot clockwise one turn to increase temperature;
about 0.5°C per turn.
5. Using T/C 4, adjust the door temperature to read 42º - 50º C using
the top trim pot (R4) on the connector distribution PCB. Rotate the
trim pot clockwise one turn to increase temperature; about 0.5°C per
turn.
6. Initiate a second empty chamber cycle and verify that the door and
chamber temperatures meet specification. Repeat this section if
necessary.
Calibration Door and Chamber Subsystem
ASP Service Guide rev D STERRAD® 100 Sterilizer 7-5