Troubleshooting - Nortec ES MK II Series Installation And Maintenance Manual

FAN MOTOR OIUNG: The
blower
pack tan requires
occasional oiling or
motor
bearlr.gs. Ten drops
of
$AE·20
grade motor
()il
are required. failure to oil every foor
months will void
the
warranty from the fan motor
maoufacturElf.
TROUBLESHOOTING
SAfETY
fAult.flndlng anoulO ooly be performed
by
qual:fied
personnel USing
accepted
induiiitrial
and
electrical
code
practices.
. RelatiVely high VOltages are present 11' 1 some clrco!ts so
safety
procedures
fihould be adMred to. Arcing or
flashing In the cylinder is danQ9fous. Shut off unit
Immediately and
COflSljlt
factOfY.
The 101l0wlO9 procedures apply to all standatd on/off
control
units. Fer
morn elaborate
cootrol
and biOW!H' pack
units,
thf'$e
IOteps can
be
used
and your factOrY repte&en'
latlve or 100 customer Service staH at NOATEC will sup·
ply Olore details.
PROCEDURES
On/off controll€d humidifiers can
~
functionally
diagnosed
by
followIng the test procedures outlined
bE!low. If
&
modulatioo
(COr.tiflUOUS
COntrOl)
uolt
is
rnalrliooUoning, It
is
best dlagno;ed
r>'I
tempOrarily
remQvlng the
adapter
p.c. board from the basic unit p.c.
bOard. Connect a Jumper wire
on
tl1e
left sida
of the basic
. unit p.c.
board
and diagrose the unit as an on/off ()Qntmt
unit.
When 'he
onioH control cireuit Is miiilde (569 CON-
TROLS section) and the "auto onloffJdraill" switch Is
pUs.,ed to "Oll",
tha 24
volt
holding
coli of
the primary
GOnlaetor sftould energize. The
re~u.lttlng
magnetic pull
closes
thE!
high voltage contacts with a distinct and
audible "clul'lk". The COI'ltsClor Is located on the right
slde:n
the
high
voltage section.
If
the cooto.ctorwlll
not
!TIske. measure 24vae
from the
grounded seCI;)i'ldary leg
of
the
primary·to.24V
transformer
to tM fonowlng:
1, The "hot secondary ley". (I
f
not,
primary \/oltage is
not
applied
or
t~ar:sf()rm;ir
Is defective or mlswlred.)
2.
;!le
le;lving s!da of
tt~e
3A fuse. (If not, fuse is blowr.
or miswlroo.)
3. The leaving side
~f
the door !ntlulock switch. (If not,
plumb'ng
door Is
off. or
switch
Is deteeti"e or
mlswlred.)
4.
The output
"on" position
(top terlllir.al) of the
fo(;ker
s\lfltch. (If not,
swItch is defective or
il'llswlrCd.)
6. Termlr.al 2 on the confloJ strip.
(If
'lot. unit is
misWitad.)
6.
Terminal 1 On the control strip. (If nol,
8Xtemid
cOl1trols are
mlswired. Humidistat high limit. and
15
ai(
proving
swItch must
be
made.
Soo
CONTROLS
section.)
7. Pin 39 on the baSic unit p.e.t. (It not, wiring from
1
to
39
is
defective.)
8. PIn 35
on th& basi:; unit
p.e.b.
(If
not.
oo-ot1 !umpe--
pl;Jg is opeo or missing.)
9. The "rot" side
:>t
the co:)tactor holding
0011.
(If not,
Wiling from
pin
as
Is dete<:tive;
If yes. the
cootac-
tor holding coil is defective.)
Assuming the amp draw (output capacity) Is less
Ihan 110%
0:
capacity
set!l~g,
the fill
val~
sOlenoid &ho!J1d make about 30 seconds aftar the
CO'ltactor makes. If
not. and
lt~ms 1
through 9 ha\i6
been checked, checl( for 24
ViiC
trom the grou;'lcU30
~!1CD1'!dary
leg ::>f the prlmaiY-to·24V transformer to
the following;
1'.) Pin 38 or. the basIc
unit
p.G..b. (If not. unit Is
lfliSlNired from 35 to 38.)
11.
Pill
36 on the basic onlt p.e.1) (If
not.
temporarily
remove the red and blacj( wired
:sensor Inpul
from
the baSic unit p.e.b. After 10 aeccnds, If them Is still
nc
power
to 36, the basic uolt p.e.b. may be defec-
tive. If pin 36 gets
power.
then the sensor Is
!n1erf8f'i:'lg with the
till
process.
If
the -.rater
lellel
!e
high. ltd$
Is expected. If the w.ter
laval Is lOW,
the r.ensor is defeclive.)
Having chang«t the necessary components, water
star~!)
fillif'lg
the
cylinder ar.d begins to submlSl'go U!8
elootrodas. Because of the high voltage
across
the
electrOdes, thEr w<lter ca ... now conduct
electricity.
Toe
CONCENTRATION PROCESS nOW tak03 place
through a series of filling and boiling cyol8& as dt)scrib-
ed earti$r. Water fills to
the
top of
the cylil'lder (when
tha flllllal"e Is 5!1ut off by the sensor). Because the fresh
sup.ply water 15 UflGoncentrated, It cannot conduct
6!ectriclt"l
well enough ao produce full output. It ' 1 1111
COi11~
to a t:oil and when tile watel' level goes
telow
the
sensor probe (internal to the cylinder) tM Hli valve
Is
alloweo to r6energlze until the water again reaches the
top. Eath tltne this happens. more ions are accumulating
io the
cylinder
and
the
contained watens becoming more
conductive (I.e., the ewe is
Il'!creaslng).
In lima the
cyi:nd~r will
reach
~OO%
output. a3$um·
Ing
the capacity dial is set to
100%. The
concentratlon
process
doeS
not stop here. i.e.\ no driltn
takes
piatle yet.
Instead, the unit fills to 1
~O%,
fill sh\its off, It boils to
90%.
fill reactivates and so on allowing the IlVerags water
level to
drop
lowt\lf
ar.d
lower In the cylinder.
This is an
extremely
Import&nl design feature because
the
cylii\der Is dispoS3ble! lil order to maxImize the
life
of t,l& throw-away It err. ,
It
IS Important to use the
minimum ilmCUnt of ulectrode surface. Ae mlnerah;
11U.I'<'1tab1y accumulate on the exposed electrode surfaee.
the 'Aillter
w:U
rlI)8
gl"adually to
higher and hlghaf levels
to expOSti c:ean surfaces as required.
When
the