1. Check packing slip to ensure ALL material has
been received.
Figure #1
CONDENSATE RETURN
(OPTIONAL)
O
p
e
r
a
ti
o
n
S
c
h
e
m
-
-
-
2. Inspect box for damage and note on shipping
waybill accordingly.
3. After unpacking, inspect unit for damage and if
damage is found, advise shipper as soon as
possible.
4. Inspect unit (humidifier) to ensure it is the
correct model, phase, and voltage. If any are
1. INLET CHAMBER
. FILL CHAMBER
3. WATER OVERFLOW
CHAMBER (SAFETY DRAIN
IN CASE OF FILL VALVE/
CONTROL BOARD FAILURE)
FILL
CUP
1” AIR
GAP
3
2
1
STEAM HOSE
ELECTRODE
CYLINDER
incorrect, advise the factory or your local
representative immediately.
NOTE: All products are shipped on an F.O.B.
factory basis. Any and all damage, loss, or breakage
claims are to be made directly to the shipping
company.
The NORTEC MES-U/MES-P electrode humidifier
STRAINER
TAP
WATER
SUPPLY
FILL
VALV E
CONNECTION
DRAIN
DRAIN
VALV E
DRAIN CANAL
(OPEN TO ATMOSPHERE)
DRAIN
PAN
is the culmination of many years of research and
development in the electrode humidifier industry. This
unit has been built by skilled craftspeople and
thoroughly tested before shipment and should, if the
following instructions are observed, provide many
years of trouble-free operation.
An electronic timer uses the rate of amp fall to
determine the water level. The objective is to
FOR HUMIDIFIERS INSTALLED IN THE CITY
OF LOS ANGELES: A city of Los Angeles approved
spring-loaded double ball CHECK VALVE should be
concentrate current-carrying minerals in the cylinder
so that a smaller volume of water is required to
produce the rated steam output.
supplied and installed by the contractor on each of the
potable water inlets to each humidifier.
This achieves the longest life for the disposable
cylinder because of minimal electrode coverage and
use of less energy because the high concentration
allows a minimal drain rate.
NPT inlet and outlet.
When 80% F.L.A. is reached, the fill valve will
Each drain line from these humidifiers shall be
routed, without dips or sags, to terminate above the
flood level rim of a City of Los Angeles approved
indirect waste receptor.
No combustible materials shall be placed in the
duct and/or the air plenum.
open refilling cylinder to 100% F.L.A. On occasion,
the drain valve will also come on if water level is too
low, indicating too high a concentration and the
requirement for a dilution of the water in the cylinder.
If the water reaches top of cylinder before 100%
F.L.A., the fill valve shuts off via the sensor and
fill-boil-fill-boil cycle continues, cycling off the red high
PRINCIPAL OF OPERATION
water sensor light until the concentration becomes
high enough to reach 100% F.L.A. The above
described control process will then take over.
When the humidistat calls, the cylinder fills to
100% of the Full Load Amperage (F.L.A.) or to the top
of the cylinder, whichever comes first. See Figure #1.
If it reaches 100% F.L.A. the water heats and boils
away to a level giving 80% F.L.A.
-1-
Page 4
WATER SUPPLY AND PLUMBING
1. The fill valve is sized for an extended water
pressure range of 30 to 80 psi.
2. For cases below 15 psi add a pressure boost
pump, notify the factory and a fill valve with an
oversized orifice will be supplied.
are designed for water pressure from 30 to 80
psi and are protected by the built-in strainer.
4. For inlet water pressure outside this range, the
factory should be contacted. (See Water
Supply and Plumbing section of this manual.)
START-UP AND OPERATION
3. For cases above 80 psi, install a pressure
reducing valve in the water feed line to the
unit.
4. With extremely dirty or muddy water sources,
e.g., some well sources, ensure proper
filtration by adding an external filter to the
water line entering the unit. (Consult factory
for accessories such as filters.)
5. DO NOT use completely demineralized water
with this unit as it is the minerals that allow the
electrode principle to work.
6. DO NOT use a hot water source as it will
cause deposits that will eventually block the fill
valve orifice.
Figure #2
Bottom View of MES-U/MES-P Unit
3/8" Cold Water
Olive Connection
· Ambient temperature location for humidifier:
41ºF - 104ºF (5ºC - 40ºC).
Check to see that the unit is securely mounted on
a level surface with the proper drain and water supply.
Check for correct voltage with appropriately sized
service. Check that the steam distributor, steam
supply hose, and condensate line are correctly
installed and routed back to the unit. Ensure that the
external control humidistat is located in an area to
properly sense the relative humidity to be maintained
by the humidifier, and that the interconnecting low
voltage wires between the humidistat and the unit’s
control terminal strip are in accordance with the wiring
diagram.
Check all electrical connections for wires which
may have become loose in shipping. Components
damaged due to loose connections are NOT under
warranty.
Check electrode plugs to ensure they are pressed
firmly onto the electrode pins. Important: Loose
connections will cause overheating of the cylinder
plugs, possibly melting the plugs and/or cylinder.
7/8" Drain
Connection
Use 7/8" I.D. Hose From Factor
.
WATER CONNECTION
1. A copper compression olive type coupling for
1/4" O.D. soft copper tubing is provided with
unit and requires no soldering for the water
connection to the unit. See Figure #2.
2. An isolating valve should ALWAYS be placed
in the feed water line allowing service of the fill
valve.
3. Each unit is fitted with a fill solenoid valve
located on the base drain pan. Flow orifices
Open the isolating valve in the feed water line to
the unit.
y
Make sure the humidistat is set high enough to call
for humidification.
Turn on the main disconnect in the primary service
feeding the unit and check that unit has power at the
primary terminal block.
PUSH THE AUTO ON/OFF/DRAIN SWITCH TO
“ON”.
Water will start to enter the cylinder through its
bottom port and rise in the cylinder to a point
determined by the solid-state control circuitry.
It is not unusual upon initial start-up for the
water to fill the cylinder and cycle on the red high
water sensor light.
-2-
Page 5
The red light simply acts as a safety to shut off the
fill valve and prevent over-filling. With the red light on,
the water in the cylinder will continue to heat and, after
a few minutes, start to boil. After the boiling action of
the water has lowered the water level below the
sensor at the top of the cylinder, the red light will go
out and the fill solenoid will again open until the
cylinder is again full.
This cycling of the red light and fill valve will
continue until the unit’s full output capacity is reached
after which the water level will automatically lower
itself in the cylinder. (The increased concentration
allows for lower electrode coverage while maintaining
the same output.) When a stabilized condition is
reached the water will be boiling close to the cylinder
seam level. The solid state circuitry will maintain the
proper concentration in the cylinder by introducing
short drains only when necessary.
If the cylinder is manually drained the above
process will repeat itself.
Figure #4
MES-P Adjustable Pot
CYLINDER REPLACEMENT
After an extended period of operation, in
accordance with life expectancy information, the
cylinder is completely used as indicated by the red
high water sensor light illuminated on the cabinet.
When this condition is reached, a new replacement
cylinder is to be installed.
Low Water Conductivity
Should normalization of the unit be required
immediately after start-up, the installer may speed up
the process by artificially increasing water conductivity.
During a fillcycle, the installer should dissolve half a
teaspoon of table salt (no more) in a cup of water and
add it to the cylinder by means of the fill cup attached
to the plumbing section.
Open the plumbing compartment and add salt
solution through cylinder outlet. Excessive amounts of
salt will result in erratic operation of the unit; however,
normalization of the unit will occur automatically
through the solid-state control sequence.
CAPACITY ADJUSTMENT
The MES-U/MES-P series of humidifiers come
with adjustable capacity (AC) PC boards. These
boards have a pot to adjust the output from 20 to
100%. See Figures # 3 and 4.
Figure #3
MES-U -Adjustable Pot
NOTE: Red light may come on during initial
start-up but does not mean cylinder replacement. See
Start Up and Operation section of this manual.
Consult factory or agent for replacement. Quote
the cylinder model from the white 3-digit label on the
Figure #5
Cylinder Removal
Adustable
Adjustable
CapacityPot
Capacity Pot
cylinder or quote model, voltage, and serial number
from unit specification label.
WHEN TO REPLACE THE STEAM CYLINDER
The steam cylinder is disposable and must be
replaced at the end of cylinder life. Cylinder life is
-3-
Page 6
dependent on water supply conditions and humidifier
usage. Failure to replace the cylinder at the end of
cylinder life may result in unit damage. NORTEC is not
responsible for any damages resulting from, or
attributable to, the failure to replace a used cylinder
(see Manufacturer’s Warranty).
INSTALLING THE NEW CYLINDER
1. The reverse procedure should be followed to
install a new cylinder. The main disconnect is
to be left open until the cylinder is completely
installed and reconnected.
REMOVING THE OLD CYLINDER
See Figure # 5.
n
1. Turn off the water supply to unit.
2. The old cylinder must be drained completely
before removing. This is done by pushing the
auto on/off/drain switch to the “drain” position.
3. When completely drained, push the auto
on/off/drain switch to the “off” position.
4. Open the main disconnect during the entire
cylinder change operation.
5. The power wires to the cylinder are attached
by cylinder plugs to the electrode pins on top of
the cylinder. Pull these plugs vertically off the
pins. See Figure # 5.
6. Using slot screwdriver, loosen the steam hose
clamp(s) and pull steam hose off vertically.
7. The cylinder is now ready to be lifted out of the
unit.
Figure #6
Plugs
White
Sensor Plug
Sensor Pin
Cylinder
Plug
1Ø
2. Ensure that the cylinder mounting stubs are
seated properly in the allotted side mounting
slots within the unit.
3. The white sensor plug on all units is for the
sensor pin, which always goes on the single
pin offset from the others. See Figure # 6.
4. Ensure that cylinder plugs are very snug on
the pins.
5. Replace loose fitting plugs, loose plugs may
generate enough heat to melt and destroy the
plug and new cylinder plugs must be ordered.
MAINTENANCE
WARNING! The plumbing and electrical
compartments contain high voltage components and
wiring. The access cover is attached with screws.
Access should be limited to authorized personnel
only.
EXTENDED SHUTDOWN
Before disconnecting power to the humidifier for a
period of extended shutdown, ALWAYS DRAIN the
cylinder first. Otherwise, the electrodes are subject to
harmful corrosion which drastically shortens the
cylinder life. Do NOT leave the switch in the DRAIN
position indefinitely as the drain coil could burn out.
Leave the switch in the OFF position and “open” the
main external fused disconnect to stop power to the
humidifier. Close the shut off valve in the water
supply line feeding the humidifier.
Cylinder Pin
Cylinder Pin
Sensor Pin
Cylinder Pin
Cylinder Pin
Cylinder Pin
3Ø
TROUBLESHOOTING
TERMS USED
F.L.A. (Full Load Amps): Refers to amps listed on
the humidifier specification label.
SHORT CYCLING: When the ‘on time’ of the
humidifier is less than ten minutes upon a call for
humidity. To correct short cycling, all humidifiers have
a capacity adjustment which allows the output of the
humidifier to be reduced to as low as 20% of rated
output, thus extending the ‘on time’ required to
maintain output.
-4-
Page 7
FOAMING: The phenomenon which can occur in
water when the impurities, already in the water reach
an excess concentration as a result of boiling away
pure water and the continued boiling action agitating
the contained water. The humidifier electronics are
designed to prevent this occurrence although in
extreme cases, water will foam with little concentration
making it necessary to have the drain time of the
water, contained in the cylinder, increased. Foaming
is normally caused by short cycling, a restricted drain,
or back pressure. The foam, generated in these
instances, is conductive and may lead to false full
cylinder indication if the level of the foam approaches
the top of the cylinder.
BACK PRESSURE: The restriction of steam flow
caused by long steam runs, improperly sloped steam
lines, elbows changing the direction of steam flow from
horizontal to vertical without a drain leg, any plumbing
detail allowing the accumulation of condensate,
undersized steam line, improper steam distributor,
downward air flow onto the distributor causing excess
static pressure at the steam outlets, or high static
pressure ducts (not probable). To overcome excess
static pressure in the duct, a fill cup extension kit
should be used. In down flow applications, a down
flow distributor should be used, but in some cases the
fill cup extension will also be required.
3. The low voltage 3 amp fuse located in the
control box could be blown.
4. The contactor holding coil could be open or
shorted.
5. The switch could be defective.
Recheck that the “auto on/off/drain” switch is still
at “on”. If it is, then shut off the main disconnect and
check fuses or breaker of the main disconnect. If they
are serviceable, turn power back on.
To test for a defective “auto on/off/drain” switch,
connect a wire from the fuse directly to terminal 6 on
the external controls strip. If the contactor activates,
the “on” side of the switch is defective. If the contactor
does not activate, the PC board could be defective.
If the 3 amp control fuse blows when the wire from
the fuse touches terminal 6 on the external controls
strip, contactor holding coil could be shorted. Replace
contactor if necessary.
After the necessary components have been
replaced and the contactor pulls in, there is line
voltage to the cylinder and the control sequence can
begin.
RESET UNIT (HUMIDIFIER): To reset the
humidifier, the auto on/off/drain switch at the front of
the humidifier should be switch to the “Off” position for
a minimum of five seconds and then switched back to
the “On” position.
MONITORED LEG: Refers to the primary wire to
the cylinder which loops through the current sensing
devise of the main PCB. This wire is terminated at the
red cylinder plug at the cylinder.
STARTING POINT
MES-U
Auto On/Off/Drain switch in “On” position - unit will not fill:
When the on/off control circuit is made and the
“auto on/off/drain” switch is pushed to “on”, the 24 volt
holding coil of the primary contactor should energize.
The resulting magnetic pull closes the high voltage
contacts with a distinct and audible “clunk”. If the
contactor will not make, then inspect the following
while referring to the wiring diagram:
1. Check for 24 Vac across terminals 18 and 26
on PC board.
2. Jumper the humidistat on external control
terminal strip. If contactor operates, then
control system is at fault.
Approximately 30 seconds after the contactor pulls
in, the fill valve coil should energize. There is also a
visible fill relay on the printed circuit board. It is the
one located farthest from the C.T. core. The points on
this relay must be touching in order for the fill valve coil
to be energized.
If the points will not touch after the built-in time
delay, then the sensor input may be interfering. To
confirm, remove the black and red sensor wires from
the terminals 6 and 10 on the PC board. Wait 30
seconds and if the fill relay points not touch, then
sensor should be replaced. If they do not touch, then
the basic PC board could be faulty. To confirm,
disconnect the red wire from terminal 18 and touch it
to terminal 14. If the fill valve coil activates then the
basic PC board should be replaced. If it still does not
activate then the fill valve coil should be replaced.
Having changed the necessary components, water
starts filling the cylinder and begins to submerge the
electrodes. Because of the high voltage across the
electrodes, the water can now conduct electricity.
Red “Change Cylinder” light on - Water at top of cylinder:
This is a common occurrence on start-up. See
Start-Up and Operation section of this manual.
-5-
Page 8
Water remains at high level and won’t concentrate:
This is normal on cold start-up and can be
accelerated by adding maximum 1/2 tsp. of dissolved
salt to the cylinder (through the plastic fill cup) on fill
cycle. See “Low Water Conductivity” section of this
manual.
If unit has been operating extensively, observe for
normal fill-boil-fill-boil cycle; no drain should be
occurring. If drain occuring, check for leaking drain
valve or back pressure.
Unit drains continually:
May be caused by foaming and/or back pressure,
or leaking drain valve.
Cylinder is almost empty, check for magnetic pull
on drain solenoid indicating miswiring. If no pull, drain
actuator is blocked open; remove, disassemble and
clean.
If drain is occurring through activated drain valve,
valve is miswired or electronics are faulty - consult
factory.
If drain is occurring through the overflow on the fill
cup, this is due to abnormal restriction on the steam
line and back pressure forces water out of the cylinder;
therefore, water cannot concentrate and level must
stay high; review installation of steam line to ensure no
blockages or excessive static pressure in air system.
-6-
Page 9
DIAGNOSTIC PROCEDURES - TROUBLESHOOTING GUIDE
Unit Status Lamp
YellowGreen
OnOnMaximum water level
OffOffNo power to the
1 flash
sequence
OffExcess current.
SymptomCorrective actions
inside cylinder.
board.
Operating amperage
exceeded 130% of
rated amps. Water is
drained from the
cylinder (drain valve
on for 10 min.).
This usually happens on initial start-up after replacing the cylinder
(normal).
Water is concentrated with minerals inside the cylinder.
Let unit run, yellow light will disappear when the unit is at full
output. This may take a day or two.
Check for main power supply fault.
Turn power switch to ‘Drain’ position. If drain valve is activated
(sound of solenoid), check connection to the board or board itself.
When no sound present, check fuse (replace with 3.0 A if needed),
transformer (voltage should be present between fuse holder and
ground screw).
Check drain valve operation, drain time, possible drain restric
tions.
Check if fill valve leaks (not holding supply water).
Back pressure may also cause very conductive water conditions.
Was the humidifier short cycling?
Check for short cycling.
Water conductivity too high.
-
2 flashes in
sequence
4 flashes in
sequence
OffNo current
detection for 30
minutes with
continuous call for
humidity.
OffEnd of cylinder life -
change cylinder.
Check water level in the cylinder - should be more than ¼ full. If
not check fill rate, 24 VAC voltage on fill valve terminals (unit must
be on with call for humidity - green light steady on). Verify fresh
watersupply to the humidifier. Leaking drain valve
can be at fault(minerals blocking the plunger).
If cylinder is more than ¼ full, check primary power, connections to
the cylinder, continuity of wires to cylinder.
Are power wires connected to proper terminals on the cylinder?
(Color coding)
Possibly wrong cylinder type.
Low water conductivity.
Check water level in the cylinder, should be about ¾ full.
Check for foaming if water level lower or cylinder life shorter than
expected.
Change cylinder, clean drain valve.
-7-
Page 10
Software requirements for Modbus RTU
Modbus addresses:
4XXXX – R/W
3XXXX - R
CommandDescriptionMODBUS
address
Output Control
Set OutputSets the desired steam output from
OFF
Disables the
humidifier and
places the
humidifier in
standby mode
After a microprocessor reset, the
default setting for Output Control
shall be OFF.
0-100%
This value shall be zero after a
microprocessor reset
ON
Enables the
humidifier
(humidifier will
operate based
on the SET
OUTPUT
command
input)
40262
40264
Details
255: inhibit actions of
humidifier
0: allow normal operation
Remotely set humidity
reading over network.
Value of 0 to 100 (per
cent). If no network signal
for N minutes, reverts to 0.
Force DrainWhen written to (FF), will interrupt
the humidification process and
activate the humidifier drain valve.
After 20 minutes the controller will
reset this value (00).
After a microprocessor reset, the
default setting shall be (00)
Set MODBUS
address *
Set MODBUS
Baud rate *
Change the humidifier controller’s
MODBUS address.
Range is 1-247.
This setting shall be non-volatile
with a default setting of 1.
Changes the humidifier’s baud rate.
Range is 4800, 9600, and 19200
B/sec.
This setting shall be non-volatile
with a default value of 9600 B/sec.
40276
255 will start the process,
0 will be accepted, to clear
if the request has not been
cleared itself
40550
The value changes will
only take effect following a
hardware reset of the
control board.
40552
The value changes will
only take effect following a
hardware reset of the
control board
-8-
Page 11
Set MODBUS
parity *
Change the humidifier controller’s
MODBUS parity.
Range is None, Even, Odd
This setting shall be non-volatile with a
default setting of Even.
Reset Run
Hour Counter
Current
Resets the humidifier controller’s run
hour counter to zero hours
Buffers the measured current40910From 0 to maximum (depending
damping
Electrode
current
The value of the electrode current in
Amps
Steam outputThe current steam output in Kg/Hr. or
LBS/hr
See UNITS (Modbus 40031)
Run hour
counter
The number of hours the humidifier
has been in operation since the last
time the run hour counter was reset
Firmware
version
The firmware version of the humidifier
controller
Humidifier stateDescribes the current state of the
humidifier and it’s I/O’s
Contactor ON/OFF
Fill Valve ON/OFF
Drain Valve ON/OFF
40554
The value changes will only take
effect following a hardware reset
of the control board
40560
255 will start the run hours
counter process.
0 will be accepted to clear the run
hours counter.
on software ability)
30850
Hex value representing the
humidifies current in amps
Resolution: 0.10 amps
Example:
015F (hex) = 35.1 Amps
30860
Hex value representing the
humidifies steam output in kg/hr
Resolution: 0.10 kg or LBS
Example:
013B (hex) = 31.5 kg/hr or
LBS/hr
30414
Hex value representing the
number of humidifier operational
hours since the last reset.
Resolution: 5 minutes
Maximum count: 5460 Hours.
Example:
07D0 = 2000 hours
30361
PackedBCDversion3.52would
be 0x0352
30800
Bit Allocation
Note More than one bit can be
active at any time.
Contactor on = 1
Fill valve on = 2
Drain valve on = 4
-9-
Page 12
Maximum
production
The rated maximum steam production
for the humidifier
30802
ValuewrittenintoUnittype
(40600) is also stored here
AlarmsThe humidifier shall describe any faults
Too long to fill
Excess Current
End of cylinder life
No current
UnitsRequired by the control board for
capacity calculations
Unit typeRequired by the control board for
current and capacity calculations
Unit voltageRequired by the control board for
current and capacity calculations
Unit phaseRequired by the control board for
current and capacity calculations.
30364
Bit Allocation
Note More than one bit can be
active at any time.
Too long to fill = 1
Excess current = 2
End of cylinder life = 4
No Current = 8
40031
0: 0-1. 0=LBS, 1=KG
406000Depending on the setting in
UNITS (Modbus: 40031)
Hex value representing
maximum unit capacity (100% fill
off amps)
40610Format is Hexadecimal
numeration table (see below)
Hex
Value
Unit
Type
0110-
120
1208
2220-
240
3230
4277
5347
6380
7400
8415
9440-
480
A550-
600
40620Bit Allocation
Single phase = 1
Three phase = 2
Three phase (6 electrode) = 4
1. FOR HEIGHT OF 5 LB PVC USE HEIGHT OF 10 LB MODEL.
2. PVC = PRIMARY VOLTAGE CONNECTION.
3. MODEL SHOWN: 163-91X5 (CONFIGURATION #5) WITH
CP (CLOSED PLUMBING) COVER REMOVED.
AUTO/ON
OFF
DRAIN
condair
TOP VIEW
FRONT VIEW
LEFT VIEW
MES-U/MES-P HUMIDIFIER
MESU DIM 10/19/98
PHYSICAL DATA
-11-
Page 14
PRIMARY TERMINAL
BLOCK
(provided with
PVC unit)
PRIMARY
POWER
PRIMARY
CONTACTOR
24 vac
(By Others)
.187 insulated fast-on
For field connection
SWITCH OFF
ON/OFF
CONTROLS
ON
24 VAC
INPUT
(By Others)
3 AMP
FUSE
HIGH VOLTAGE
ELECTRODE LEADS
(BY OTHERS OR
INCLUDED WITH
PVC UNIT)
-2 LEADS
FOR SINGLE
PHASE
-3 LEADS
FOR THREE
PHASE
HIGH WATER
SENSOR PCB
DRAIN
FILL
VALVE
DRAIN
VALE
CHANGE
CYLINDER
LAMP
CURRENT
TRANSFORMER
MES-U
CONTROL
BOARD
STEAM CYLINDER
-12-
NOTE: SOLID LINES WIRING BY OTHERS
MES-U INTERNAL AND FIELD WIRING
(For PVC or LVC unit with remote or attached electrical)
WIRING DIAGRAM number 150-6240 REV. B
Page 15
- 13-
Page 16
MES-U 25 - 30 / 3Ph
MES-U 15 - 20 / 3Ph
MES-U/MES-P SPARE PARTS LIST - ELECTRICAL AND PLUMBING
1
380/
208/
380/
208/
380/
460/
230V
460/
230V
460/
575V
575V
575V
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
n/a
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
3
1
2
1
1
3
1
2
1
1
3
1
2
1
1
3
1
2
1
1
3
1
1
1
n/a
1
1
1
n/a
1
1
1
n/a
1
1
1
n/a
1
1
1
n/a
1
1
2
1
2
2
1
2
2
1
2
2
1
2
2
1
2
2
1
1
1
1
2
1
1
1
1
2
1
1
1
1
2
1
1
1
1
2
1
1
1
1
1
2
1
1
2
1
1
2
1
1
2
1
1
2
1
1
4
1
1
1
4
1
1
1
4
1
1
1
4
1
1
1
4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
MES-U 15 - 20 / 1Ph
MES-U5 - 10/ 1Ph
208/
380/
208/
NORTEC
Comments
230V
460/
230/
PA RT
575V
277V
NUMBER
1
1
1
1
1
1
1
1
1
1
1
Consult
Fac tor y
150 4150
135 4012B
1
n/a
1
n/a
1
n/a
135 4012R
135 4012Y
1
1
1
132 1216
1
1
1
163 1026
1
1
1
132 5064
1
1
1
132 5046
1
1
1
132 8810
1
1
1
132 6003
w/ocoil
1
1
1
145 6000
1
1
1
132 6002
w /o body
1
1
1
Specify Length 132 8860
3
3
3
132 5035
1
1
1
132 6004
2
1
1
2
1
1
2
1
1
145 5002
132 6002K1
132 1042BR
1
1
1
142 1050
1
1
1
1
132 1061
n/a
n/a
n/a
n/a
132 1062
1
1
1
Specify Length 132 8850
2
2
2
132 5023
2
2
2
145 5004
1
1
149 5072
1
1
132 6129
1
1
1
145 1003
2
2
2
Closed Plumbing 145 3079
1
1
1
Closed Plumbing 163 1014
2
2
2
132 3079
1
1
1
PVC * Electrical 132 3020
1
1
1
132 5253
1
1
1
132 3099
1
1
1
147 4994
1
1
1
132 8810
4
4
4
132 5007
1
1
1
132 3097
1
1
1
PVC * Electrical 147 3002
PVC * Electrical 163 1050
1
1
1
151 3003
1
1
1
1
1
1
1
1
1
Consult
Fac tor y
1509591
1509529
DESCRIPTION
Drain Valve Plastic Stuff ing Block
Drain Canal Screw
Cylinder - To order replac ement cylinder, quote the 3-digit
number on the cyl. Being replaced or quote the unit
serial number, model and voltage f rom the spec label.
Cylinder Plug - Sensor H.W.S
Cylinder Plug 10AWG Spring Loaded - Black
Cylinder Plug 10AWG Spring Loaded - Red
Cylinder Plug 10AWG Spring Loaded - Yellow
1
2
3
4
NO
POS .
5
Drain Canal
6
Drain Canal Washer
Drain Canal Gasket
8
9
7
Drain Valve Coil Assembly - 24V ASCO2
Drain Hose Nominal 3/4" - 1 f t. length
11
10
Drain Valve Hose and Overf low Hose Spring Clamp
12
14
13
15
Drain Valve Body and Coil Ass embly
Drain Valve Hose and Overf low Hose
Drain Valve Body - Assembly
Drain Valve Spring & Core
Drain Valve Scr ew s
Drain Valve O-Ring
17
19
18
16
--14-
Steam Hose Nominal 3/4" - Specif y Length
Fus e 3 A In- Lin e
Fill Valve Hose
Fill Cup
Fill Valve A ssembly #2
Fill Valve A ssembly #1
23
20
22
21
Fitting - 3/8" to 1/4" compres sion 90 degree
Grommet - Closed 7/8"
Fitting - 1" to 3/8"
Fill Valve Spr ing Clamp
Fill Valve Sc rew
26
24
25
Grommet - Closed 1-1/16"
Grommet - Open 7/8"
28
27
29
30
31
High Water Sensor PC Board As sembly
Steam hose Clamp
Terminal Block 65A 1PH
Tie Wrap - Reusable
Sw itch -On/Of f
Ground Clamp
High Water Sensor Board Standof f
High Water Sensor Ligh and Lense
36
35
32
33
34
Terminal Block 65A 3PH
number on the board label, or, quote the unit ser ial number
PCB - To order replacement PC Board, quote the 7-digit
model and voltage f rom the spec label
MES-P Replacement PCB Board
MES-P Replacement Modbus driver board
37
39
40
38
41
42
43
Page 17
- 15-
Page 18
Page 19
LIMITED WARRANTY
Walter Meier Inc. and/or Walter Meier Ltd. (hereinafter collectively referred to as
THE COMPANY), warrant for a period of two years from date of shipment, that THE
COMPANY’s manufactured and assembled products, not otherwise expressly
warranted are free from defects in material and workmanship. No warranty is made
against corrosion, deterioration, or suitability of substituted materials used as a result of
compliance with government regulations.
THE COMPANY’s obligations and liabilities under this warranty are limited to
furnishing replacement parts to the customer, F.O.B. THE COMPANY’s factory,
providing the defective part(s) is returned freight prepaid by the customer. Parts used
for repairs are warranted for the balance of the term of the warranty on the original
humidifier or 90 days, whichever is longer.
The warranties set forth herein are in lieu of all other warranties expressed or
implied by law. No liability whatsoever shall be attached to THE COMPANY until said
products have been paid for in full and then said liability shall be limited to the original
purchase price for the product. Any further warranty must be in writing, signed by an
officer of THE COMPANY.
THE COMPANY’s limited warranty on accessories, not of Walter Meier’s
manufacture, such as controls, humidistats, pumps, etc. is limited to the warranty of the
original equipment manufacturer from date of original shipment of humidifier.
THE COMPANY makes no warranty and assumes no liability unless the
equipment is installed in strict accordance with a copy of the catalog and installation
manual in effect at the date of purchase and by a contractor approved by THE
COMPANY to install such equipment.
THE COMPANY makes no warranty and assumes no liability whatsoever for
consequential damage or damage resulting directly from misapplication, incorrect sizing
or lack of proper maintenance of the equipment.
THE COMPANY retains the right to change the design, specification and
performance criteria of its products without notice or obligation.
Page 20
Walter Meier (Climate USA) Inc.
826 Proctor Avenue, Ogdensburg, New York 13669
Walter Meier (Climate Canada) Ltd.
2740 Fenton Road, Ottawa, Ontario K1T3T7
Tel: 866 NORTEC 1Fax: 613 822 7964
northamerica.climate@waltermeier.com www.humidity.com
PRINTED IN CANADA
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