SES 2000 Vac (LS3) AUTOCLAVE Appendix B
Page 52 of 53 ST-SM45g
3 EXISTING
FIXINGS
112507
424138
A2
B1
B2
A1
C
O
N
T
R
O
L
A
C
O
N
T
R
O
L
B
A
ASSEMBLY 112507
A
A = left-hand pin and lead as drawn
and identified on both lead and relay
Spade connection
identifications
New Relay PCA (424138) and Solid State
Relay Assembly (112507) assembly detail
Solid State Relay Assembly (112507)
connection details
APPENDIX B
PCA 424138 and Relay Assembly 112507 modification November 2004
SS Relay Board 424138 issue 03 was modified in November 2004 to issue 04. 424138 issue 04 has an
attached loom that connects to a new Solid State Relay Assembly (112507). Solid State Relay Assembly
(112507) switches power for the Immersion Heater and the Band Heater only.
424138 issue 04 (or later) and its associated assembly 112507 are direct replacements for 424138 issue
03 (or earlier) which will become obsolete. From November 2004 any issue 03 (or earlier) versions of
424138 that need replacement should be replaced with a 424138 issue 04 (or later) and a Solid State Relay
Assembly (112507).
The loom attached to 424138 issue 04 (or later) has four spade connectors (A1, A2, B1 and B2) and a 4-way
connector (one lead labelled A). These all connect to the new Solid State Relay Assembly (112507) and
the relay connections are clearly marked with matching identifications A1, A2, B1, and B2 and Control A
(see orientation of plug in the illustration below).
Removal and replacement of 424138 issue 03 is detailed within this manual, removal and replacement of
issue 04 is similar except assembly 112507 will need to be removed first and replaced last (breaking and
making connections on 112507 as required). 112507 utilises existing fixings as identified in the illustration
below.
Should a fault develop in 112507 (e.g. Immersion heater not working but no fault can be found in wiring, fuses
or other components etc.) it can be replaced easily without disturbing other components. The assembly
112507 should be replaced as a complete assembly, do not attempt to replace the relay only. When
replacing 112507 ensure all connections to it have been made before assembling back into the autoclave
and securing it in place. After final assembly ensure the normal autoclave tests are performed to check
function.
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