Myron L 729II - Manual (Page 13)

II. INSTALLATION
A. GENERAL
This section provides the recommended procedures for properly
installing the 720 Series II pH/ORP Monitor/controller, and
sensors. For OEM models see section II.C.
WARNING: THE MYRON L COMPANY RECOMMENDS
THAT ALL MOUNTING AND ELECTRICAL
INSTALLATIONS BE PERFORMED BY QUALIFIED
PERSONNEL ONLY. FAILURE TO DO SO COULD
CAUSE DAMAGE TO INSTRUMENT, AND COULD BE
HARMFUL OR FATAL TO PERSONNEL.
B. MECHANICAL INSTALLATION
All Monitor electronics are packaged inside drip/weather-proof
housings. The physical dimensions of the housing is suitable for
panel, bench or surface mounting.
There are three basic guidelines to consider when selecting a
Monitor’s mounting location:
1. Select a site that limits the Monitor/controller’s exposure
to excessive moisture and corrosive fumes.
2. If at all possible, mount the Monitor/controller at eye
level for viewing convenience.
3. If needed, the enclosure may be rotated or mounted
upside down so that the cutouts are on the opposite
side.
1. SURFACE MOUNTING WITH SMP
NOTE: A Surface Mounting Plate (SMP50) may be required when
access to the back side of the mounting site is impractical or if
the Monitor/controller must be mounted on a solid wall. The
SMP50 comes with the proper hardware to mount the
Monitor/controller to the SMP, however, the installer must provide
the four (4) additional screws/bolts to mount the SMP to the wall or
fixture. Their size is to be determined by the user.
1. Select your mounting location. Mark four (4) required
mounting holes. For hole locations, use the SMP as a
template.
2. Drill the corner holes in the SMP according to the size of
the screws or bolts selected.
3. Attach and securely fasten the SMP to the Monitor using
the 1/4” - 20 X 3/8” screws provided.
4. Mount the SMP to the prepared site using the selected
screws or bolts.
2. SURFACE MOUNTING WITHOUT SMP
NOTE: Surface mounting will require two (2) 1/4” - 20 screws of a
length equal to the thickness of the mounting site plus 3/8”.
1. Select mounting site location. Mark and drill the required
mounting holes. For hole drilling locations, see figure
II.B.1.
2. Insert the 1/4” - 20 screws into the holes from the side
opposite the mounting site.
3. Hold the Monitor/controller in place while starting and
tightening the mounting screws.
3. PANEL MOUNTING
A panel mounting fastening kit is provided with all
Monitor/controllers. Panel mounting will require the use of the
fastening kit’s two (2) 4-40 mounting screws/nuts or two (2) #4 -
1/2” sheet metal screws. See figure II.B.1 for panel cutout
dimensions.
1. Select your mounting location. Mark the appropriate
panel cutout and complete the necessary panel cut.
2. Carefully unfasten and separate the Monitor/controller’s
front panel from its enclosure.
3. Disconnect all panel cable(s)/wires from the
Monitor/controller’s main circuit board.
9
!
CAUTION - READ FOLLOWING CAREFULLY
DOUBLE INSULATED
SURFACE AND PANEL MOUNTING DIAGRAMS
NOT TO SCALE
DIMENSIONS IN INCHES
(MILLIMETERS)
HIGH LOW
SET POINT
4.80
(122)
3.89
(99)
0.63 THK
(16)
3.10
(79)
0.40
(10)
SURFACE
MOUNT
1.05
(27)
2.84
(72)
0.31 DIA, X2
(8)
5.00
(127)
3.96
(101)
0.13 RAD MAX, X4
(3)
0.113
(3)
2.54
(64)
4.17
(106)
0.11
(3)
PANEL
CUTOUT
6.00
(152)
0.5
(13)
0.88 DIA
(22)
1.13 DIA
(29)
0.53
(14)
4.94
(126)
0.60 DIA
(15)
3.78
(96)
0.50 DIA
(13)
Figure II.B.1.
MYRON L
COMPANY
Face Plate Gasket Panel Gasket
Face Plate Gasket
Panel Gasket
pH
6-32x3/8 ”x4