MP5A Operation and Maintenance Manual
________________________________________________________________________________________________________________
Copyright
©
2023
‐
2024
Halogen
Systems,
Inc.
All
rights
reserved
worldwide.
Rev.:
4.02
9
Display
Wiring
Plug
the
display
into
a
NEMA3R
receptacle
to
power
the
system.
If
the
installation
requires
conduit
hard
wired
connections,
the
knockouts
on
the
Display
enclosure
may
be
removed
and
replaced
with
1/2”
(0.875:
hole)
Liquid
Tight
connectors
and
conduit
that
complies
with
IP66.
If
conduit
is
used
on
the
input
power
side,
a
switch
must
be
added
to
disconnect
power
from
the
Display.
Fuse
Replacement
There
are
internal
fuses
on
the
CN
board
inside
the
enclosure.
These
are
replaceable
with
components
shown
below:
Replacement
fuses
have
the
following
rating:
5
X
20
mm,
Slow
Blow,
3.5
Amp
Labeled
on
the
printed
wiring
board
F1
and
F2
5.
Operation
The
start
‐
up
screen
will
appear
after
the
first
cycle
(Figure
7).
The
display
will
take
one
minute
to
update.
The
system
calibration
should
be
checked
at
start
and
commissioning.
If
air
is
detected
the
sensor
pump
will
cycle
on
and
off
three
times
to
remove
air
from
the
sensor
and
may
delay
the
first
cycle
completion
by
up
to
20
seconds.
Figure
6:
Start
up
screen
showing
the
number
of
4
‐
20
mA
outputs
(4)
detected.
This
screen
will
appear
for
3
to
5
seconds.
Figure
7:
Main
Screen:
normal
display
after
startup
and
sensor
beginning
normal
operation.
This
screen
will
appear
for
3
to
5
seconds
Display
Interface
&
Keypad
Operation
Figure
8:
Display
&
Buttons
Key
Function
Description
MENU
Displays
the
Menu
Tree
C H L
‐‐ ‐‐ ‐‐ ‐‐ ‐‐
n A
‐ ‐ ‐ ‐ ‐
4
‐
2 0
1 2 3 4
Start
Up
Screen
C H L
‐ ‐ ‐
n A
‐ ‐ ‐ ‐ ‐
p H
‐ ‐ ‐
O R P
‐ ‐ ‐
C O N D
‐ ‐ ‐
A D D R
1 2 5
Main
Screen
Sensor
Modbus
address
(only
shown
at
start
up).
Indicates
number
of
4
‐
20
mA
outputs
present.
Will
be
2
or
4
depending
on
display
model.