19
98-0157 Rev P
4.2.4
Cleaning Procedure
CHEMICAL CLEAN
The MediQA is equipped with the ability to perform a chemical cleaning of itself once chemicals have
been added in the tank. This consists of 4 main steps,
circulation
,
tank drain
,
high pressure rinse
,
and
low pressure rinse
. Valve positions are shown in the following figures.
Recirculation:
During the recirculation phase of the chemical clean process, the valves redirect all of the water back
into the MediQA tank. The pump(s) turn on at a low speed to keep the pressure in the system below
the alarm set-point of the pressure switch.
Figure 8
Figure 9
Figure 10
Concentrate to Drain Valve
Loop Return Valve
Product to Loop Valve
Tank Drain, High/ Low Pressure Rinse:
During the Tank Drain, High Pressure Rinse, and Low
Pressure Rinse, the concentrate drain valve shown in Figure
11 opens allowing all of the residual chemicals in the system
to go to the drain. The tank will drain completely and then
refill before the rinse processes occur. During these 3
phases all other valves remain in the same position as the
recirculation procedure.
Figure 11
Concentrate to Drain Valve
Summary of Contents for 00MDP2-230
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