HARVEY Chemiclave EC5500, Service Manual, Page: 43 / 56

43
M
AINTENANCE AND
S
ERVICING
Note
Never adjust the thermostat only
because the pressure in the chamber
is low. Troubleshoot most likely causes
first.
Adjust the chamber temperature to
250 ° F ± 5 ° F.
Do not adjust per pressure readings.
Check temperature with thermometer
assembly #267569.
Replacement
Heater is not field replaceable. Return the unit to the
factory for repair.
Chamber Temperature
To verify the temperature, a thermometer assembly
(Part #267569) is required.
1. Remove the tray from the unit.
2. Turn unit “ON” and allow to heat foe a mini-
mum of 90 minutes.
3. Be sure the reservoir contains VAPO-STERIL
solution.
4. Verify the thermometer reads less than 100 ° F.
If not, shake the thermometer down. Place the
thermometer assembly (Part #267569) in the
middle of the chamber with the bulb facing the
back of the unit.
5. Close the door. Set control knob to pressurize
and run a complete cycle.
6. After the buzzer sounds, turn the control knob
to depressurize. Allow unit to complete purge
phase. When buzzer sounds, open the door.
Using the tray handle or protective clothing,
remove the thermometer assembly from the
chamber.
7. Allow the thermometer to cool to room tem-
perature (10-15 min.).
8. Thermometer should read a temperature
between 265 ° F - 275 ° F. If it doesn’t, adjust the
thermostat.
9. Reinstall top cover on unit.
Thermostat
See “Chamber Temperature.”
Functional Check
A continuity check of thermostat with the chamber at
room temperature should indicate full continuity (o ohms).
Thermostat Adjustment
1. Perform steps 1-8 of the “Chamber Tempera-
ture” procedure before adjusting the tempera-
ture.
2. Adjust thermostat if temperature on the
thermometer is out of the range of 265 ° F to
275F.
Warning
Burn Hazard: Chamber and
thermometer assembly will be hot. Use
proper protection when removing
assembly from chamber.