SES 2000 Vac (LS3) AUTOCLAVE
Part 3
ST-SM45g
Page 19 of 53
PART 3 MAINTENANCE
Fault
Possible Cause
Remedy
(7)
Safety valve leaks (See also
(a)
Dirt on valve seat.
(a) With low pressure in chamber
Fault (8)).
carefully operate valve
by hand (Warning: Beware
of risk of scalds from escap-
ing steam). If leakage per-
sists, fit new safety valve
(para .29).
(b)
Check pressure and
(b) Re-calibrate control board
temperature to see if
(para.57 onwards).
calibration is set too high.
(8)
Safety valve operates even
(a)
Safety valve fault.
(a) Fit new safety valve (para.29).
though temp is below 136°C
(b)
Re-calibration needed.
(b) See Calibration Procedure
(See also Fault (7)).
(para.57 onwards).
(c)
Chamber temperature
(c) Fit new temperature sensor
sensor fault.
(para.14).
(d)
Control board fault.
(d) Fit new control board
(para.9).
(9)
Temperature above 137°C
(a)
Failed solid state relay.
(a) Fit new solid state relay
causing safety valve to
board (para.26). Also see
operate.
Appendix B
(10) ‘ERROR 4’ displayed
(a)
Water fill valve leaking.
(a) Drain reservoir and fit new
before sterilizing temp.
water fill valve (para.17).
reached.
(b)
Discharge valve leaking.
(b) Strip and clean water
discharge valve or fit a
new one (para.15).
(c)
Chamber water level
(c) Fit new chamber water level
sensor fault.
sensor (para.35)
(d)
Wiring loom fault.
(d) Check terminations.
(e)
Door seal leaking.
(e) Clean mating surface of
gasket around door with a
soapy cloth. If leakage
persists, replace door-
seal (para.19).
(11) ‘ERROR 5’ displayed.
(a)
Solid state relay
(a) Fit new relay board
failed (No voltage
(para.26). Also see
across heater).
Appendix B
(b)
Heater open-circuit.
(b) Fit new heater if resistance
of element when cold is not
approx. 30ohms (short auto-
clave) or 20ohms (long auto-
clave) (para.18).
(c)
Control board fault.
(c) Fit new control board
(para.9).
Continued