HARVEY Chemiclave EC5500, Service Manual, Page: 13 / 56

13
Principles of Operation
Warning
Do not reuse Vapo-Steril solution
removed from the waste tank. This
liquid may be contaminated or
chemically altered and may damage
the sterilizer.
Caution
Use only harvey Vapo-Steril solution in
the Chemiclave. Do not dilute, alter or
otherwise change Vapo-Steril in any
way. Use of other solutions may cause
mechanical damage to components of
the sterilizer and may result in non-
sterile loads.
Chemiclave Cycle
(EC5500 & EC6000)
Filling the Reservoir
This is a manual function. When the sterilant reservoir is
filled, Vapo-Steril can flow through the metering valve to
fill the shot chamber. The metering valve is open to the
shot chamber when the control knob is set to DEPRES-
SURIZE (see Figure 4).
Power On
Control knob is set to DEPRESSURIZE before turning
the power ON. This vents any sterilant vapors into the
condensate tank. Electrical power is applied to the unit
when POWER switch is turned ON. When the power is
turned ON all the indicator (LED’s) should light for
approximately two seconds then extinguish, except for
the POWER and TEMP indicators which should remain
ON.
Warm Up
The heater that surrounds the chamber is turned on
when the power is turned ON. It stays active until the
setpoint temperature is reached. As long as the heater is
active, the TEMP indicator lights (see Figure 5).
Ready/Load
When the setpoint temperature is reached, the heater
cycles off and the TEMP indicator goes out. The chamber
is ready to be loaded (see Figure 6). The heater is
controlled to maintain chamber temperature. TEMP light
cycles on and off with heater.
Pressurization
When the operator sets control knob to PRESSURIZE,
sterilant flows by gravity into the chamber from the shot
chamber of the metering valve (see Figure 7, PRESSUR-
IZE mode). Chamber pressure begins to increase. The
timer displays “20” minutes.