HARVEY Chemiclave EC5500, Service Manual, Page: 28 / 56

28
Maintenance and Servicing
Warning
When troubleshooting the system, be
sure that Vapo-Steril does not drip onto
power supply board. If the Vapo-Steril
drips or is spilled on the power supply
board, turn off the power switch and
allow time for the Vapo-Steril to
evaporate completely. Otherwise, the
Vapo-Steril could ignite, causing burns
and damage.
Note
If following those procedures fails to
repair the sterilizer, contact Barnstead/
Thermolyne Technical Support.
Piping Components
Leaks
If the sterilizer cannot reach or maintain chamber pressure,
first inspect the door gasket and replace it if worn or
damaged. Then check for leaks in components (see
following procedures). As each leak is identified and
corrected, be sure the process does not disturb nearby
connections.
Leaks at Fittings
1. Allow the unit to cool to room temperature.
2. Use compressed air, soapy water and a brush.
3. Remove the outside cover.
4. Pressurize the piping system with compressed
air.
• Remove the reservoir. (Bands are removable.
Do not cut.) Then disconnect the tubing from the
exhaust inlet to the metering valve. Lift the
reservoir straight up. Quickly cover the outlet
under the reservoir to prevent spillage. Set the
reservoir aside.
• Open the chamber door. Turn the control knob to
Pressurize. This will drain any Vapo-Steril from
the metering valve. Wipe any Vapo-Steril from
the bottom of the chamber.
• Turn the control knob to DEPRESSURIZE.
Close and latch the door.
• Remove the tubing from the exhaust port of the
metering valve (see Figure).
• Hold the compressed air nozzle tightly against
the exhaust port stub on the metering valve.
Blow air into the unit until the pressure gauge
needle moves into the VAPORIZATION range
(green). Then turn the control knob to PRES-
SURIZE.