DEMA Nitro Plus User manual

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I-1205
Rev. B-43
Overv
i
The DEMA
®
dish machin
e
Warni
n
816
ew
®
Nitro Plus i
s
e
s. The unit is
n
gs
Installat
i
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n
regulati
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installat
i
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devices.
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3/23/2
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DEM
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I-1205
Rev. B-43816 Page 2 of 13
3/23/2018
Note:Left to Right- 1st Position Detergent,
2nd Position Rinse, 3rd Position Sanitizer
L = Liquid (pump)
D = DRY (solenoid valve)
Liquid or Dry Chemical Product
Nitro Plus
Base Unit
Nitro Express Models
Nitro Plus can be built in a number of configurations. The following applies to all systems.
Prewired with power, trigger and probe cables.
Mounting bracket assembled to the Nitro Plus and ready to use.
Appropriate installation kit items that include, fittings, tubing, etc. (see Packout Kitsection)
NP.DLL.TI
Trigger Device
T = Trigger Board
M = Magnetic Field Sensor
Packing Kit List
NitroPlusInstallationKit
Part
Number
Description
Qty/Model
NP.DL.T
NP.LL.T
NP.DLL.T
NP.LLL.T
904.8TRinseCheckValve(StainlessSteel) 1  1  1  1 
904.8KYSanitizerCheckValve(Kynar) 1  1 
80.55LiquidDetergentBulkheadFitting 1  1 
58.5DryDetergentBulkheadFitting 1  1 
C.12VIKConductivityProbe(FlipProbe) 1  1  1  1 
25.68.201/4"ODLDPETubing‐20ft 1  1  1  1 
100.12.SV1VinylRinseTube‐16ft 1  1  2  3 
81.312.1SplitPickupTubeStiffener 1  2  2  3 
81.182.11/4"x1/4"Push‐OnFittings(forpump) 2  4  4  6 
81.16.1TieWraps8"Long 5  5  8  8 
I‐1205InstructionSheet 1  1  1  1 
Strain Relief
System will come with strain relief for the
wiring that is exiting the enclosure.
Systems that do have the "I" come
with a 1/2" conduit.

I-1205
Rev. B-43816 Page 3 of 13
3/23/2018
Operational Requirements
For Indoor Use Only
Main Powe
r
100 VAC – 250 VAC 50/60 Hz 1.5 A
Trigger Signals 20V – 500V 50/60 Hz 200mA
Motors/Solenoid Valves 24VDC
Detergent Pump Rate 10oz/min (300ml/min)
Rinse/Sanitizer Pump Rate 0.5oz/min (15ml/min)
Operating Temp 4-30°C 40-100°F
Case Material ABS
Weight 3.8 kg 8.5 lbs
Max. Altitude 2000 M 6500 ft
Environmental Temp 0-40°C 32-104°F
Installation Category II
Pollution Category II
The integrity and operational characteristics of this unit are not guaranteed outside the above
mentionedparameters.Useofthisunitoutsideoftheseparametersnullifieswarranty.
Overall Size
Sanitizer Rinse Detergent

I-1205
Rev. B-43
Install
a
ALL ELE
C
MACHINE
UNIT MUS
Mountin
g
t
h
1. De
t
p
o
w
2. Us
i
Settin
g
up t
1. Lo
c
ma
n
2. Pr
o
3. If t
h
12
V
wa
t
int
a
4. Ins
t
rea
d
5. Ins
t
ma
c
6. Ins
t
ma
n
thi
s
Connectin
g
1. Aft
co
n
an
d
2. Cu
t
ch
e
3. Me
4. Cu
t
Wirin
g
the
N
The followi
n
The followi
n
dish machin
e
separately f
r
to have pow
e
816
a
tion
WARN
I
ELECT
COUN
T
ELECT
ELECT
INSTA
L
C
TRICAL PO
W
PRIOR TO
B
T BE GROU
N
h
e Nitro Plus
t
ermine a suita
b
w
er and trigge
r
i
ng the mounti
n
he Nitro Plus
c
ate the electri
c
n
ufacturer of t
h
perly ground t
h
h
e Nitro Plus
w
V
IK probe or t
h
t
er level, norm
a
a
ke, drains an
d
t
all the deterg
e
d
ing of all che
m
t
all the rinse li
n
c
hine. If a tap
i
t
all the sanitiz
e
n
ufacture
r
of t
h
s
fitting.
the Chemica
l
er mounting t
h
n
tainers. The d
e
d
sanitizer tubi
n
t
the tubing to
t
e
mical contain
e
asure the leng
t
t
the tubing to
t
N
itro Plus to
t
n
g diagram is i
n
WARN
I
tri
gg
er
s
manufa
c
UNIT
M
n
g steps will h
e
e
that it is bei
n
r
om the dish m
e
r to run the s
e
3/23/2
0
I
NG: INSTA
L
RICAL COD
E
T
Y, PARISH,
RICAL COD
E
RICAL CON
L
LATION. F
O
W
ER MUST
B
B
EGINNING
N
DED (EAR
T
b
le location th
a
r
signals. (Mai
n
n
g bracket ha
n
and the Dish
c
al connection
h
e machine to
h
e dispenser t
o
w
ill be operati
n
h
e DEMA Ind
u
a
lly 1-2” from
incoming wat
e
nt injection b
u
m
icals enterin
g
n
e injection fit
t
i
s not
p
rovide
d
e
r injection fitt
i
h
e machine. If
l
Tubin
g
to th
e
h
e dispenser,
m
e
tergent tubin
g
n
g (100.12.SV
t
he length req
u
e
r.
t
h of tubing ne
e
t
he length req
u
t
he Dish Mac
h
n
cluded to hel
p
I
NG: For safe
t
s
i
g
nals to the
N
c
turer’s reco
m
M
UST BE GR
O
e
lp to insure t
h
n
g used in conj
u
achine. The fo
e
tup that is pro
g
0
18
L
LATION O
F
E
S AND RE
G
PROVINCI
A
E
S AND RE
G
T
RACTOR
O
O
R QUESTI
O
B
E TURNED
INSTALLA
T
T
HED).
a
t will accom
m
n
power is typ
i
n
g the Nitro Pl
u
Machine
point. The in
p
determine if t
h
o
earth ground
.
n
g in the conc
e
u
ctive Probe (
8
the bottom of
e
r
supply.
u
lkhead fitting
g
the wash tan
k
t
ing (904-8T)
i
d
, follow the m
a
i
ng (904-8KY
)
a tap is not
p
r
o
e
Nitro Plus
m
easure the le
n
g
(25.68.20) is
1) which is cl
e
u
ired and, if de
e
ded to go fro
m
u
ire
d
to reach t
h
h
ine
p
to install the
ty
purposes d
i
N
itro Plus. C
o
m
mendations.
O
UNDED (E
A
h
e proper wiri
n
u
nction with.
D
llowing steps
w
g
rammed in t
h
F
DEMA PR
O
G
ULATIONS
A
L OR OTHE
R
G
ULATIONS
O
R ENGINE
E
O
NS, CONTA
C
OFF TO TH
E
T
ION
m
odate the len
g
cally connect
e
u
s using appro
p
p
ut power may
h
ere are dedica
t
.
e
ntration mode
,
8
2.28.1) in the
the tank, and
m
(80-55) above
k
.
i
nto the rinse l
i
a
nufacturer’s
r
)
(if sanitizer i
s
o
vide
d
follow
t
n
gth of tubing
n
opaque in col
o
e
ar in color an
d
sired, place th
e
m
the dispense
r
h
e bulkhead fi
t
wires in the c
o
i
sconnect mai
o
nnect power
t
A
RTHED).
n
g of the unit.
T
D
EMA Engin
e
w
ill insure tha
t
h
e unit.
O
DUCTS MU
S
ESTABLIS
H
R
AGENCIE
S
REQUIRE T
H
E
R PERFOR
M
C
T A CERTI
E
HEATING
g
th of the prei
n
e
d to a known
s
p
riate screws
a
be 100V – 26
5
a
ted terminals
a
,
locate the pr
o
wash tank. T
h
m
ust be kept a
w
the probe (if
a
ine tap provid
e
r
ecommendati
o
s
used) into th
e
t
he manufactu
r
n
eeded to go f
r
o
r and has a la
r
d
has a small i
n
e
pickup tube
o
r
to the chemi
c
t
ting or chemi
c
o
rrect places f
o
i
n power to th
t
o the Nitro
P
T
he unit shoul
d
e
ering does no
t
t
the unit only
Page
S
T MEET AL
H
ED BY NAT
I
S
. IT IS POS
S
H
AT A CER
T
M
THE ELE
C
I
FIED ELEC
T
ELEMENTS
n
stalled wirin
g
s
ource in the d
a
nd wall ancho
r
5
V 50/60 Hz.
a
vailable fo
r
in
s
o
per position f
o
h
e probe must
b
w
ay from heat
i
a
probe is used
)
e
d by the man
u
o
ns for installi
n
e
rinse line tap
r
er’s recomme
n
r
om the dispe
n
r
ger inside dia
m
n
sidediameter.
o
n the tubing
b
c
al injection
po
c
al injection
po
o
r proper pow
e
e dish machi
n
P
lus per the di
s
d
be triggered
t
t
recommend
p
receives powe
r
4 of 13
L
L APPLICA
B
I
ONAL, CIT
Y
S
IBLE THAT
T
IFIED
C
TRICAL
T
RICIAN.
AND DISH
g
for both the
m
ishmachine).
r
s.
Check with th
s
tallation.
o
r the DEMA
C
b
e installed be
l
ing elements,
p
)
to obtain a r
a
u
facturer of th
e
n
g this fitting.
provided by t
h
n
dations for in
s
n
ser to the che
m
m
eter than the
b
efore placing
i
o
in
t
on the ma
c
o
in
t
on the mac
e
r for the unit.
n
e before wiri
n
s
h machine
t
o power on fr
o
p
owering the u
n
r when it is ne
c
B
LE
Y
,
m
ain
e
C
-
l
ow the
p
ump
a
pid
e
h
e
s
talling
m
ical
rinse
i
n the
c
hine.
hine.
ng
o
m the
n
it
c
essary

I-1205
Rev. B-43816 Page 5 of 13
3/23/2018
Flux Sensors - If trigger connection points cannot be established, the magnetic field readers (82.23.1) may be used in
place of the trigger board and cable. The magnetic field readers or flux sensors connect directly to the control board in
the trigger wires spots as shown on the wiring diagram. The magnetic field readers or flux sensors can be placed on
wash motors or rinse valves to measure a magnetic field when the motors or valves are activated which will trigger the
proper pump or valve on the dispenser.
1. Connect the wash trigger (white and brown wires) to the appropriate wash trigger output (between 24 and 480
V 50/60Hz) as recommended by the dish machine manufacturer.
2. Connect the rinse trigger (black and red wires) to the appropriate rinse trigger output (between 24 and 480 V
50/60 Hz) as recommended by the dish machine manufacturer.
3. Make sure to connect the earth ground (green wire) to the ground connection on the dish machine as
recommended by the dish machine manufacturer.
Main Power should be applied any time there is power to the dish machine. The main power cable will come out of the
conduit fitting with the trigger cable and be hooked up near the same electrical connection point on the dish machine.
If there is ever any question about the main power or trigger cable connection to the dish machine, please check
with the dish machine manufacturer to see where the proper trigger connection points are located before
installing the trigger connection wires.
BROWN – MAIN POWER
BLUE – (LINE) MAIN POWER
ORANGE – WASH TRIGGER (HOT)
WHITE – WASH TRIGGER (RETURN)
BLACK – RINSE TRIGGER (HOT)
RED – RINSE TRIGGER (RETURN)
GREEN – EARTH GROUND
DISH MACHINE
ELECTRICAL
CONNECTION
POINT

I-1205
Rev. B-43816 Page 6 of 13
3/23/2018
Initial Programming
The programming of this unit is done through the control board, display, and buttons on the front of the unit.
Programming of the unit is as follows:
Company Name Press and hold “Enter” Button for 3 Seconds until backlight comes on
Press 
Language English, Spanish, French, Portuguese
Press 
Rack Count Show Rack count
Press 
Det. SP Input Det. C = Concentration or P = Probeless SP= Set point Input & probe reading
Press 
New Program Press Enter
Control Mode Press Enter, then select using arrows Concentration (Probe) or Probe-less
Press 
Machine Type Press Enter, then select using arrows Conveyor or Door.
Press 
Trigger Mode Press Enter, then select Detergent/Rinse or Rinse Only or Detergent Only
Press 
When Concentration is chosen When Probeless Door is
chosen When Probeless Conveyor is chosen
Concentration Set Point 0-1000 Recharge Time 1s – 5 min Recharge Time 1s – 5min
Press  Press  Press 
Feed Rate 0-10 Dead Cycles 0-5 Dwell Time 1s – 10 min
Press  Press  Press 
Feed Limit 5s – 10 min Initial Charge 1s – 10 min Initial Charge 1s – 10 min
Press  Press  Press 
Alarm Delay 5s - 10 min Charge Activate Off-60s Charge Clock 5 min – 16 hrs
Press  Initial Charge Activate will
determine the length of the
rinse trigger that instigates an
initial charge while in probe-less
mode.
Charge Clock – If no triggers are
received for this length of time, the
next wash trigger will give an initial
charge.
Alarm Volume 0-10
Press 
Rinse Speed 0-100%
Press 
Rinse Delay 0-15s Door Mode Only
Press 
Rinse Limit 15s - 30s Door Mode Only
Press 
Rinse Length 5s-75s Conveyor and Door/Detergent Trigger only Modes
Press 
Sanitizer Speed 0-100%
Press 
Company Name Press Enter, use arrows to change characters, use sanitizer prime and exit to move
cursor left and right.
Press 
Rack Count Press Enter, then Exit to Reset Rack Count
Press 
Enter New Code Enter 4 digit code, use sanitizer prime button to move cursor
Press 
Control Mode Reverts back to beginning of programming
Inductive Probe – With the inductive probe there are a several settings that can be further changed to help make the
inductive probe more useful. For detailed information on those settings, please see instruction sheet I889 that comes
with the Inductive Probe Kit (82.28.1). For further assistance contact DEMA Technical Service.

I-1205
Rev. B-43816 Page 7 of 13
3/23/2018
Modify Programming
When modifying the programming of the unit. Use the flow chart below for modifications. The menus change slightly
when modifying the programming.
Company Name Press and hold “Enter” Button for 3 Seconds until backlight comes on
Press 
Language English, Spanish, French, Portuguese
Press 
Rack Count Show Rack count
Press 
Det. SP Input Det. C = Concentration or P = Probeless SP= Set point Input & probe reading
Press 
Modify Program Enter Code
When Concentration is chosen When Probeless Door is
chosen When Probeless Conveyor is chosen
Concentration Set Point 0-1000 Recharge Time 1s – 5 min Recharge Time 1s – 5min
Press  Press  Press 
Feed Rate 0-10 Dead Cycles 0-5 Dwell Time 1s – 10 min
Press  Press  Press 
Feed Limit 5s – 10 min Initial Charge 1s – 10 min Initial Charge 1s – 10 min
Press  Press  Press 
Alarm Delay 5s - 10 min Charge Activate Off-60s Charge Clock 5 min – 16 hrs
Press  Initial Charge Activate will
determine the length of the
rinse trigger that instigates an
initial charge while in probe-less
mode.
Charge Clock - If no triggers are
received for this length of time, the
next wash trigger will give an initial
charge
Alarm Volume 0-10
Press 
Rinse Speed 0-100%
Press 
Rinse Delay 0-15s Door Mode Only
Press 
Rinse Limit 15s - 30s Door Mode Only
Press 
Rinse Length 5s-75s Conveyor and Door/Detergent Trigger only Modes
Press 
Sanitizer Speed 0-100%
Press 
Control Mode Press Enter, then select using arrows Concentration (Probe) or Probe-less
Press 
Machine Type Press Enter, then select using arrows Conveyor or Door.
Press 
Trigger Mode Press Enter, then select Detergent/Rinse or Rinse Only or Detergent Only
Press 
Company Name Press Enter, use arrows to change characters, use sanitizer prime and exit to move
cursor left and right.
Press 
Rack Count Press Enter, then Exit to Reset Rack Count
Press 
Enter New Code Enter 4 digit code, use sanitizer prime button to move cursor
Press 
Control Mode Reverts back to beginning of programming

I-1205
Rev. B-43816 Page 8 of 13
3/23/2018
Replacement Parts and Reference Information

I-1205
Rev. B-43816 Page 9 of 13
3/23/2018
NitroPlusControlModuleReplacementParts
Item
No.
DEMAKit
No.
Description
1 81.1MountingBracketKit(includes2pcs,81.19.1,#8FlatHeadScrew)
2 81.501MountingPanel(fortriggerboard)
3 81.499ControlPanelCover
4 84.500BaseBracket(forpowersupply)
5 84.501CoverBracket(forpowersupply)
6 41.40.2#6‐32x1/2"Screw
7 41.69.2#6x1/2"SSSheetMetalScrew
8 44.116.2#8x1/2"HiLoScrew(forplastic)
9 81.118.11.2TriggerBoardKit
10 81.118.12TriggerCableKit(triggerboardtocontrolboard,2pcsinkit)
11 81.163.1PowerSwitch
12 81.18.1#6x3/8"HiLoScrew(forplastic)
13 81.181.2ProbeCable
14 84.176.1StrainRelief
15 81.19.1#8FlatHeadScrew
16 81.20.2#4x3/8"HiLoScrew
17 81.118.42NitroControlBoard
18 81.320.4Power/TriggerCableAssembly(externalpower&trigger)
19 81.47.11/2"HolePlug
20 84.125.4PowerSupplyCable
21 84.154.1PowerSupply115/230VAC,24VDC,2.5A60W
22 84.195.3EnclosureBack
23 84.206.3Enclosure
24 84.298.124VDCPowerAdapter(barreljacktomodularconnector)
25 L1113MembraneLabel
26 L1123DisplayLabel
27 L1715NitroPlusLabel
28 84.183.7CableStrainRelief
29 81.47.47/8"HolePlug
30 L947‐4TriggerWireColorsLabel

I-1205
Rev. B-43
Item
N
1 
2 
3 
4 
5 
6 
NitroPlus
PumpMo
d
sanitizerc
816
NitroPl
u
N
o.
ControlMod
d
uleKitsincl
u
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3/23/2
0
u
sControlM
DEMAKi
t
81.118
.
84.65.
3
81.118
.
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.
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.
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4
uleinclude
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a
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oduleRepla
c
t
No.
.
43
3
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.
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.
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.1
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c
ementKits(
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C
Detergent
P
Detergent
V
RinseMod
u
SanitizerP
u
SideModul
erandtrigge
e
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c
d
ischargetu
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Deter
g
Deter
ge
includesmo
d
D
C
ontrolMod
u
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umpModul
e
V
alveModul
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leKit
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mpModule
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eJoint
rcablesand
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ent Pump or
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nt Valve t
yp
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Page
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escription
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10 of 13
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joints.
valvefittings ,rinseor

I-1205
Rev. B-43816 Page 11 of 13
3/23/2018
3 Roller Fixed – Roller Block
(Rinse/Sanitizer Pump)
Spring Loaded - Roller Block
(Detergent Pump)
Squeeze Tube
(See Common Replacement Parts on page 12)
DetergentPumpParts
Item
No.
DEMAKitNo. Description
1 81.173.12DetergentPumpAssyw/60RPMMotor(noenclosure)
2 41.40.2#6‐32x1/2"StainlessSteelScrew
3 81.174.1BluePumpCover
4 81.128.2BluePumpBase
5 81.172.1SpringLoadedRollerBlockAssembly
6 25.85.2#10‐32x1/2"StainlessSteelScrew
7 80.59.60MK.160RPMDetergentPumpMotorKit
8 81.47.11/2"HolePlug(notshown,plugsunused1/2"holesonbackofenclosures)
9 81.118.15DetergentPumpKit‐BluePumpParts&RollerBlockAssy,nomotor
1025.85.19#10‐32x2"StainlessSteelScrew
Rinse/SanitizerPumpParts
Item
No.
DEMAKitNo. Description
1 81.173.7Rinse/SaniPumpAssyw/15RPMMotor(noenclosure)
2 41.40.2#6‐32x1/2"StainlessSteelScrew
3 81.174.1BluePumpCover
4 81.128.2BluePumpBase
5 81.172.23RollerFixed‐RollerBlockAssembly
6 25.85.2#10‐32x1/2"StainlessSteelScrew
7 80.59.15MK.115RPMRinse/SanitizerPumpMotorKit
8 81.47.11/2"HolePlug(notshown,plugsunused1/2"holesonbackofenclosures)
9 81.118.16Rinse/SaniPumpKit‐BluePumpParts&RollerBlockAssy,nomotor
1025.85.19#10‐32x2"StainlessSteelScrew

I-1205
Rev. B-43816 Page 12 of 13
3/23/2018
DetergentValveParts
Item
No.
DEMAKitNo. Description
1 81.204.1DetergentValve/BracketAssembly
2 41.40.2#6‐32x1/2"StainlessSteelScrew
3 81.146.1ValveCover
4 58.103.21/4"MPTx1/4"Push‐OnJGFitting
5 58.104.31/4"MPTx1/4"Push‐OnElbowJGFitting
6 81.195.11/4"Stemx1/4"Push‐OnElbowJGFitting
SqueezeTube&Common ReplacementParts
DEMAKitNo.Description
81.177.1SqueezeTube‐DetergentEPDM‐DefaultsqueezetubewithNitroPlus
81.177.4SqueezeTube‐DetergentSilicone
81.177.2SqueezeTube‐Rinse/SaniEPDM‐DefaultsqueezetubewithNitroPlus
81.177.22SqueezeTube‐Rinse/SaniSilicone
81.182.11/4"x1/4"Push‐OnUnionJG(connectspickup&dischargetubestopump)
904.8TStainlessSteelRinseCheckValve(notsuitablewithchlorineproducts)
904.8KYKynarSanitizerCheckValve(suitablewithchlorineproducts)
80.55LiquidDetergentBulkheadFitting
58.5DryDetergentBulkheadFitting
C.12VIKConductivityProbe(FlipProbe)
25.68.201/4"ODLDPETubing‐20ft
25.751/4"ODLDPETubing‐100ft
100.12.SV1VinylRinseTube1/4"ODx1/16"ID‐16Ft
100.12.SV3VinylRinseTube1/4"ODx1/16"ID‐100Ft
81.312.1SplitPickupTubeStiffener
81.17.5SiliconeGreasePack‐1oz

I-1205
Rev. B-43816 Page 13 of 13
3/23/2018
Troubleshooting
(Some models may not include all items listed below)
S
y
mptom Probable Cause Remed
y
No power is being supplied
to the unit 1. Trigger Cables connected to the wrong place on the machine.
2. Switch on bottom of unit is turnedoff.
3. Power is not cycling on the machine
properly.
4. Trigger/Power cable is damaged from
installation.
1. Check wiring diagram for proper connection and
contact dish machine manufacturer for correct
trigger placement.
2. Make sure switch is turned on.
3. Check with the dish machine manufacturer if all
power should have been restored to the unit to see
if there is an issue with the machine.
4. Turn power to the dish machine off and inspect the
cable for any possible damage done.
Pumps are not priming like
they should be or not
holding a prime
1. Hole in the tubing from the chemical
container to the pump head.
2. Hole in the squeeze tube in the pump
head.
3. Fitting is not tight on the tubing
1. Check the tubing from the chemical container to
the pump head for leaks by feeling the tubing for
chemical that has leaked out. Replace the tube if
necessary.
2. Replace the squeeze tube after inspecting it for a
possible hole or leak.
3. Check both the inlet and outlet fitting and tighten if
necessary to create a good seal.
Pump over feeding 1. If in concentration or probe mode,
feed rate may not be setcorrectly.
2. If in concentration or probe mode,
probe cable may not be connected
properly.
3. If a probe is being used, scale could be
built up on the probe.
4. Range of set point is too low.
1. Check the programming for the feed rate.
2. Check the probe cable connection points and make
sure it is connected properly.
3. Clean Probe.
4. Check set point in programming.
Pump under feeding 1. If in concentration or probe mode, the
probe cable may be shorted.
2. If a probe is being used, scale would
be build up on the probe.
3. Range of set point is too high.
1. Check the probe cable for any possible shorts and
correct the issue where necessary.
2. Clean Probe.
3. Check set point in programming.
Rinse/Sanitizer pump not
running 1. Speed turned off. 1. Check the programming to see the speed setting and make sure it is on the proper setting.
Warranty
Merchandise Returns
No Merchandise will be Returned for Credit Without DEMA’S Written Permission. Returned Merchandise
Authorization Number is Required in Advance of Return.
Product Warranty
DEMA products are warranted against defective material and workmanship under normal use and service for
one year from the date of manufacture. This limited warranty does not apply to any products that have a
normal life shorter than one year or failure and damage caused by chemicals, corrosion, physical abuse, or
misapplication. Rubber and synthetic rubber parts such as “O”-rings, diaphragms, PVC tubing, and gaskets are
considered expendable and are not covered under warranty. This warranty is extended only to the original
buyer of DEMA products. If products are altered or repaired without prior approval of DEMA, this warranty is
void.
Defective units or parts should be returned to the factory with transportation prepaid. If inspection shows them
to be defective, they will be repaired or replaced without charge, F.O.B. factory. DEMA assumes no liability
for damages. Return merchandise authorization number must be granted in advance of returned units for repair
or replacement (See “Merchandise Returns” above).