Myron L Aquaswitch II - Manual (Page 42)

the area of the AQUASWITCH II Monitor/controllers operation,
i.e. for a conductivity AQUASWITCH II
Monitor/controllers that is operating between 15 and
20µS, the recommended Myron L standard solution is
KCl-18.
NOTE: For resistivity values, the Myron L Company can supply
NaCl standards as low as ~25µS on special order. Extremely low
values are available from other sources. Calibrated at 25µS the
Ultrameter is capable of very accurate resistivity measurements.
2. Once the Ultrameter is calibrated, the process water is
measured. (For resistivity measurements, follow the
recommended procedure described in the Ultrameter
Operation Manual, section IV.B, Measuring Resistivity.)
3. Finally, the AQUASWITCH II Monitor/controllers is
calibrated/adjusted to match the value measured by the
Ultrameter by adjusting the Main CALibration control
shown in figure V.A.1.
4. Turn power OFF.
5. Re-install front panel as described below in
“REASSEMBLY”.
REASSEMBLY
1. Carefully reinstall the front panel, bottom first.
Ensure no wires have been pinched between
enclosure and front panel.
2. Reinstall the two (2) screws and tighten.
3. To operate, turn power ON.
E . PREVENTIVE CARE
The Myron L Company recommends that the following Preventive
Care procedures be observed.
1. Try to prevent exposure to excessive heat and moisture.
2. The
AQUASWITCH II Monitor/controllers's main AC
power source should be protected against excessive
voltage "spikes."
3. Take care not to damage the Monitor during handling.
NOTE: Daily, weekly or monthly maintenance schedules are
based upon the frequency of use and the severity of the Monitor's
environment and operating conditions.
4. Repeat the AQUASWITCH II Monitor/controllers's
Check-Out procedures to verify satisfactory operation
and/or isolate possible troubleshooting symptoms.
5. Check all cable connections to ensure that they are free
of moisture and contamination.
6. Inspect and replace damaged component boards and
cable assemblies.
7. Periodically remove, clean and inspect the Sensor
(AS II ).
F . ALTERNATIVE VALVING CONFIGURATIONS &
OPERATION for CONTINUOUS
PROCESS WATER
The following methods will provide an uninterrupted water supply
to process if a fresh Dl bank is NOT in place when the other Dl
bank exhausts. Refer to figures II.A.1, II.E.1 & II.E.2.
O P T I O N 1
Requirements:
Continuous process. No interruptions allowed.
Connections:
“A” output (BANK A) to “A” valve AND “B” valve.
“B” output not connected.
Bleed not connected.
Omit bleed valve.
Configure “A” valve Normally Closed & “B” valve Normally Open.
O P T I O N 2
Requirements:
Continuous process. Holding tank between Dl beds and process.
Purge ok but no prolonged shutdown.
Connections:
Bleed output (BLEED) connected to bleed valve.
Bleed configured as Normally Closed.
Other connections same as Option 1.
O P T I O N 3
Requirements:
Continuous process. Purge required only at system startup.
Connections:
Same as Option 2.
Add manual valve in line with Bleed Valve.
39