Myron L Aquaswitch II - Manual (Page 18)

5. SOLID STATE OUTPUT
24 VDC Unregulated 30mA max. The following instructions are
assuming the Monitor/controller enclosure is already open.
a . Piezo Electric Alarm - PA/PAO (option)
For additional information, see Piezo Alarm under Options in
section III.I.
1. If not already installed, peel tape backing from PIEZO
and press into place per figure III.I.3.
2. Attach connector to main control circuit board per figure
III.I.4.
NOTE: If remotely mounted; cut wires and splice as necessary,
use comparable wire. Piezo requires 1/4” (6.35mm) hole in user
panel.
b . Remote Alarm - RA™ (option)
For additional information,see RA Instructions under options in
section III.J.
1. Run user supplied #22, 2 conductor speaker type wire
from Monitor/controller to RA location as necessary.
Additional wire may be ordered, part #RAW-200, see
Options & Accessories.
2. Open the RA by removing the four screws.
3. Locate and remove the 8” 2 conductor wire attached to
RA.
4. At the controller, connect the extension wires to the 8”
2 conductor wire with the wire nuts provided — Black to
Positive (+) and White to Negative (-). Be sure to first
pass the wire through the user supplied waterproof strain
relief in the enclosure.
5. Plug the reddish brown female connector into the male
connector on the controller CB marked either RA or PA
(see inside case label for location). It will only go on the
connector one way.
6. At the RA, connect the wires to the connector — Black
to Positive (+) and White to Negative (-).
7. To test, simply turn on the controller and adjust controller
set point until the alarm/piezo sounds off. If controller is
not yet connected to a functioning sensor, on
conductivity/TDS controllers it will be necessary to press
and hold the Full Scale test switch.
The black button on the front of the RA will mute the
piezo alarm for approximately three minutes or until you
improve the water quality (readjust controller set point).
The piezo alarm will continue to sound off every three
minutes until the user has improved the alarm condition
inside the controller. If three minutes muting is fine for
your application, skip to step 9.
8. If three minutes is too long or too short, adjust time delay
control inside RA until desired mute time is achieved
adjustable from approximately 6 seconds to 10 minutes).
9. Replace the bottom of the RA, and secure RA to the
surface you have selected for its installation.
NOTE: If the RA does not sound off;
1. Check the polarity of the extension wire connections.
2. Be sure the controller is actually switching (relay will
click).
c . Connect to your own alarm or indicator
Use the following as guidelines.
Connector is a standard 2 wire Methode* style
connector. Connector with 8” wires, part #RAH, is
available from the Myron L Company.
Ensure your requirements do not exceed the 24 VDC
Unregulated 30mA maximum.
Ensure the polarity is correct (RED is positive), see
figure V.A.1.
Attach wires to RA.
Attach connector to controller connector (RA) per figure
V.A.1.
*Methode is registered trademark of Methode Electronics, Inc.
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.
15
Figure II.E.7
-11
0-20m
Ω
U P
}
I N C
H Y S 1 S P 1 FS SW
DIS
CAL
3 S
FULL SCALE
PUSH TO TEST
SPC
Conductivity/TDS Main CB Assembly
0-10VDC
OUTPUT
SENSOR LEADS
REMOVE THESE TWO LEADS
Figure II.E.8
FS SW
3 S
S E N S O R L E A D S INSTALL 10K
R E S I S T O R H E R E
CAL
Conductivity/TDS Main CB Assembly
BK WT RD GN NU R- R+
DEC
BK WT RD GN NU R- R+