Water Maze WB Series User manual

OPERATOR’S MANUAL
For technical assistance or the Water Maze Dealer nearest you consult our web page at
www.wmaze.com
■WB-50A ■ WB-120A
1.103-474.0 1.103-473.0
WB
L
I
S
T
E
D
®
07/11/19 8.913-984.0-L

WB • #8.913-984.0-L
Introduction.................................................................................................................................... 4
Unpacking...................................................................................................................................... 4
General Safety Instructions ....................................................................................................... 4, 5
Electrical Safety Information .......................................................................................................... 5
Wiring ........................................................................................................................................ 5, 6
Pump Safety .................................................................................................................................. 6
Standard Safety Features.......................................................................................................... 6, 7
Installation.................................................................................................................................. 7, 8
Pre-Startup Check List .................................................................................................................. 8
Operating Procedure ..................................................................................................................... 9
Principles of Operation .................................................................................................................. 9
Installation Drawings.............................................................................................................10 - 11
Storage Tank Configuration ......................................................................................................... 12
Exhaust Stacking Configuration................................................................................................... 13
WB-50A Front View...................................................................................................................... 14
WB-120A Front View.................................................................................................................... 15
Start-Up Procedures.................................................................................................................... 16
Shut Down Procedures................................................................................................................ 16
Setting the Burner........................................................................................................................ 17
Soft Start Ignition......................................................................................................................... 17
Burner Adjustment Diagram ........................................................................................................ 18
Foaming....................................................................................................................................... 19
Converting Natural Gas to L.P. Gas ............................................................................................. 19
Veri-Flame #7-8061 ..................................................................................................................... 20
3 Point Sensor Control................................................................................................................. 20
Setting High Limit Control............................................................................................................ 21
Maintenance ...........................................................................................................................21-23
CONTENTS

Model Number ______________________________
Serial Number ______________________________
Date of Purchase ____________________________
The model and serial numbers will be found on a decal attached
to the evaporator. You should record both serial number and date
of purchase and keep in a safe place for future reference.
CONTENTS
3
WB • 8.913-984.0-L
Programming of Water Maze Cycle Timer ..............................................................................24-26
Water Level Control Unit & Parts List .......................................................................................... 27
WB-50A Exploded View..........................................................................................................28-29
WB-50A Exploded View Parts List..........................................................................................30-32
WB Control Panel w/Parts list................................................................................................. 33-35
WB-120A Exploded View........................................................................................................36-37
WB-120A Exploded View Parts List........................................................................................38-40
Water Maze w/Anti-Foam Metering Pump .................................................................................. 41
Air Line Assembly Exploded View and Parts List ...................................................................42-43
Gas Train Assembly WB-50 Exploded View and Parts List..................................................... 44-45
Gas Train Assembly WB-120 Exploded View and Parts List................................................... 46-47
Replacing Pump Head Tubing .................................................................................................... 48
Metering Pump and Parts List ..................................................................................................... 49
Peristaltic Metering Pump............................................................................................................ 48
WB-50/120 Regenerative Blower #5-1503 .................................................................................. 49
Troubleshooting ......................................................................................................................52-54
Specifications............................................................................................................................... 55
Service Log.................................................................................................................................. 56
Warranty ...................................................................................................................................... 57

4WATERMAZE SERIES OPERATOR’S MANUAL
WB • 8.913-984.0-L
INTRODUCTION
Your owner's manual has been prepared to provide
you with a simple and understandable guide for equip-
ment operations and maintenance based on the latest
product information available at the time of printing. To
keep your machine in top running condition, follow the
specific maintenance and trouble shooting procedures
given in this manual.
NOTE: WATER MAZE reserves the right to make chang-
es at any time without incurring any obligations
UNPACKING
1. WATER MAZE module with removable doors
2. 20 mesh filter screen in a plastic housing
3. Tube of caulk
4. Operator's manual
5. WATER MAZE tool kit and door removal tool
6. WATER MAZE 5600 Defoamer
7. Bulk head fitting and strain relief
NOTE: Report any damage to machine or components
for claim against the freight line.
Owner/User Responsibility:
The owner and/or user must have an understanding
of the manufacturer’s operating instructions and warn-
ings before using this WATER MAZE machine. Warning
information should be emphasized and understood. If
the operator is not fluent in English, the manufacturer’s
instructions and warnings shall be read to and discussed
with the operator in the operator’s native language by
the purchaser/owner, making sure that the operator
comprehends its contents.
Owner and/or user must study and maintain for future
reference the manufacturers’ instructions.
SAVE THESE INSTRUCTIONS
This manual should be considered a permanent
part of the machine and should remain with it if
machine is resold.
When ordering parts, please specify model and se-
rial number. Use only identical replacement parts.
This machine is to be used only by trained opera-
tors.
PLEASE NOTE: WATER MAZE is not responsible for
procurement of regulatory and/or operating permits that
may be required by city, county, state or federal agen-
cies. It is the customer who is responsible for procure-
ment of any hazardous or non-hazardous regulatory
and/or operating permits, compliance with codes or
other governmental requirements associated with the
installation, use, or disposal of waste associated with this
equipment. Submerged combustion can be classified as
incineration in specific jurisdictions. It is the customer's
responsibility for procurement of appropriate local and
state permits as needed.
The guidelines listed in the evaporator feasibility report
are specific only to the waste stream submitted for evalu-
ation and estimated emissions. Moreover, WATER MAZE
is not reponsible for the operation or maintenance of
the evaporator unit. If the unit is subjected to any waste
stream other than that which has been tested by the
named laboratory, operation may cause adverse effects
on the equipment and will negate any warranty of parts
or equipment.
IMPORTANT SAFETY
INSTRUCTIONS
WARNING: To reduce the risk of
injury, read operating instruc-
tions carefully before using.
1. Read the owner's manual
thoroughly. Failure to follow
the instructions could cause a
malfunction of the machine and
result in death, serious injury
and/or property damage.
2. The installation of the gas line must be done by a
licensed gas contractor and in accordance with local
and/or national codes.
DANGER: The machine, when
installed, must be electrically
grounded in accordance with lo-
cal and/or national codes. Do not
spray water near electrical com-
ponents. Do not touch machine
with wet hands or while standing
in water.
3. Never make adjustments on ma-
chine while it is in operation except those prescribed
in this manual.
4. Do not allow high concentrations of flammable fluids,
acids, caustic or abrasive fluids to pass through the
waste water pump into the combustion chamber.
5. Before servicing this machine, refer to all the MSDS
on the material identified in the waste stream. You
must comply with all warnings and
wear all protective clothing stated
on the MSDS.
WARNING: Avoid installing ma-
chines in small confined areas.
Adequate oxygen is needed for
combustion or dangerous carbon
monoxide will result.
WARNING
READ OPERATOR’S
MANUAL
THOROUGHLY
PRIOR TO USE.
WARNING
DANGEROUS FUMES:
INSTALL ONLY IN
WELL VENTILATED
AREA .
HAZARDOUS
VOLTAGE. CAN
SHOCK, BURN OR
CAUSE DEATH.
DANGER

WATERMAZE SERIES OPERATOR’S MANUAL 5
WB • 8.913-984.0-L
6. Protect inlet hoses from traffic and sharp objects.
7. Be certain hoses and piping have been connected
before operating.
8. Turn the machine off before disconnecting hoses.
9. Inlet influent temperature must not exceed 150°F
(66°C).
10. When making repairs, disconnect the machine from
the electrical source.
11. The best insurance against an accident is precaution
and knowledge of the equipment.
12. WATER MAZE is not liable for any modifications or
the use of components not purchased from WATER
MAZE.
13. The WATER MAZE and components will freeze if
not in operation and must be located in a heated
enclosure in cold climates.
14. Running the system or the pump without water will
damage the pump and will void the warranty.
15. WATER MAZE should be installed and started up
by an authorized WATER MAZE dealer.
16. This machine can be used with natural gas or
propane. A conversion kit can be supplied by the
manufacturer to convert the machine to the alternate
fuel.
WARNING: If you smell gas, shut
off the gas supply valve, extin-
guish any open flame and test all
joints with a soap solution. If the
odor persists, call your gas sup-
plier immediately.
WARNING: Do not locate the ma-
chine in the vicinity of any flam-
mable vapors, liquids or solids.
17. Only those liquid wastes that have been approved by
WATER MAZE and the proper regulatory agencies
should be placed in the WATER MAZE machine.
EPA test methods 8260 and 200.7 must be obtained.
NOTE: If any other liquids that have not been tested
are introduced into the WATER MAZE machine, the
warranty will be void.
18. WARNING: Do not attempt to evaporate flam-
mable wastes of any kind, i.e., do not process
solvents, pure oils, etc.
19. WATER MAZE requires a representative sample
of the waste stream analyzed for pH, metals, total
solids, total suspended solids, oil and grease, foam
and chlorides test.
20. High levels of chlorides and fluorides will cause cor-
rosion especially when heated.
ELECTRICAL SAFETY
INFORMATION
WARNING: To reduce the risk of
injury, read electrical instructions
carefully before using.
WARNING: Do not bypass any
safety feature. You can cause
fires and explosions. Obey the
safety precautions in safety
instructions.
DANGER: Hazardous voltage
can shock, burn or cause death.
Ground machine before connect-
ing to power supply.
1. Ground the equipment before
connecting it to an electrical
power supply.
2. Failure to ground the equip-
ment can cause a severe or
fatal electrical shock hazard.
3. Do not ground to a gas supply line.
4. To avoid dangerous or fatal electrical shock, turn
OFF the power to the equipment before working on
the electrical connections.
5. Supply voltage must be within ± 10% of the name-
plate voltage. Incorrect voltage can cause a fire
or seriously damage the equipment and voids the
warranty. If in doubt, consult a licensed electrician.
6. Connect the equipment to a dedicated circuit with
no other equipment on it.
WIRING
1. Install a ground wire and maintain this equipment
in accordance with your local electrical code and all
other codes and ordinances that apply. Consult your
local building inspector for local code information.
2. Ground the equipment permanently using a wire
of size and type specified by local and/or National
Electrical Code.
3. Connect the ground wire first to the green ground-
ing wire provided. Do not connect the equipment
to an electrical power supply until the machine is
permanently grounded, otherwise serious or fatal
electrical shock hazard may be caused.
4. For the best ground connection, connect to a ground-
ed lead in the service panel or to a metal underground
water pipe or well casing at least 10 feet long. If plastic
pipe or insulated fittings are used, run the ground
wire directly to the metal well casing or use ground
electrode furnished by the power company.
WARNING
RISK OF FIRE OR
EXPLOSION:
OBEY SAFETY IN-
STRUCTIONS.
WARNING
RISK OF FIRE OR
EXPLOSION:
AVOID FLAMMABLE
LIQUIDS, VAPORS
OR SOLIDS.
HAZARDOUS
VOLTAGE. CAN
SHOCK, BURN OR
CAUSE DEATH.
DANGER

6WATERMAZE SERIES OPERATOR’S MANUAL
WB • 8.913-984.0-L
5. If 208V single phase is the only available electrical
source, the step down transformer must be changed to
a 208/120V .500KVA transformer or a buck boost trans-
former must be installed to raise the voltage to 230V.
PUMP SAFETY
WARNING: Do not pump high
concentrations of flammable
liquids or explosives such as
gasoline, fuel oil, kerosene, etc.
Do not use in explosive atmo-
spheres. The Water Maze should
only be used with liquids compat-
ible with Water Maze component
materials. Failure to follow this
warning could result in personal injury and/or prop-
erty damage.
1. Know the pump application, limitations and potential
hazards.
2. Make certain that the power source conforms to the
requirements of your machine; 230V single phase
for all WATER MAZE machines. Always check the
serial plate for power requirements.
3. Release all pressure within the system before servic-
ing any component.
4. Drain all liquids from the components before
servicing.
5. Check hoses for weak or worn condition before each
use, making certain all connections are secure.
6. Periodically inspect sparger tube, nozzle, filter and
other system components. Perform routine mainte-
nance as required.
Personal Safety:
a. Keep work area clean, uncluttered and properly
lit. Replace all unused tools and equipment.
b. Keep visitors at a safe distance from the work
area.
c. Make the workshop safe with padlocks, master
switches and power lock out devices.
7. All wiring and electrical connections must be per-
formed by a qualified electrician.
8. Protect the electrical cord by having the electrician
run all electrical wiring through conduit from the
power source to the machine.
9. Use wire of adequate size to minimize a voltage drop
at the motor.
10. Disconnect the power before servicing a motor or
other components. If the power disconnect is out-of-
sight, lock it in the open position and tag it to prevent
unexpected application of power.
WARNING
RISK OF FIRE OR
EXPLOSION:
OBEY SAFETY
INSTRUCTIONS.
11. Do not touch an operating motor. Modern motors
are designed to operate at high temperatures.
STANDARD SAFETY FEATURES
The WATER MAZE uses electricity, gas and water to
operate. These can be fatal if not handled properly. For
this reason, the WATER MAZE has been designed with
safety in mind.The following are standard safety features
you will find on all WATER MAZE equipment.
Interlock System:
The WATER MAZE has an interlock system which must
be proven before the burner will ignite. All of these inter-
locks are proven through the Veri-Flame.
1. Pre-Ignition Interlocks:
a. High/low gas pressure switches
These switches insure that there is enough gas
pressure to operate the burner but not excessive
pressure (see page 20).
NOTE: The low pressure switch is set at 12 water
column inches (wci). The high pressure switch
is set at 60 water column inches (wci).
b. Air Pressure Switch
This switch insures there is at least 12 water
column inches of air pressure. NOTE: The High,
Low Gas and Air Pressure Switches have inter-
nal lights. If there is a failure, the light goes out.
See pages 43 & 45.
c. Gas Solenoid Valve
This valve must be closed during pre-ignition
checks. If open, the system will shut down.
NOTE: The WB-50 has three gas solenoid
valves.The WB-120 has six gas solenoid valves
(see pages 43-45).
d. 3 Point Sensor Control:
The evaporation tank must have a minimum
amount of water to prevent damage to internal
parts due to excessive heat. If the water level is
at the bottom rod on the 3 Point Sensor Control,
ignition of the burner is prevented (see item 3
page 27).
2. Post-Ignition Interlock:
UV Scanner
A UV scanner looks for the ignition of the burner.
Once the WATER MAZE has gone through the inter-
locks and the 15 second purge process, the burner
goes through an ignition sequence. If the burner fails
to ignite, the UV scanner shuts down the burner.
Filter:
A 20 mesh screen on the incoming waste water line
prevents solids from entering and damaging the pump.

WATERMAZE SERIES OPERATOR’S MANUAL 7
WB • 8.913-984.0-L
WARNING: The gas line must be
installed by qualified person-
nel only. It must be checked for
leaks before installing theWATER
MAZE. All gas piping must com-
ply with local and national fuel
gas codes.
Connect the main gas line to the 1"
or 1-1/2" line on the rear panel of the
WATER MAZE. This will be labeled
“Natural Gas Only” or “L.P. Gas Only” depending on the
machine you purchase. Connect the vent line to the 1"
vent pipe on the rear panel of the WATER MAZE (see
figures 1-3).
CAUTION: This vent pipe must be vented to the at-
mosphere.
Electrical:
The WATER MAZE requires 230 volts single phase. Re-
fer to the serial plate for proper voltage and amp require-
ments for your machine. All electrical lines must be tested
with a voltage meter for proper voltage before connect-
ing to the WATER MAZE. NOTE: If 208V single phase
is the only electrical source available, the step down
transformer must be changed to a 208/120V transformer
(#6-60011) or a buck boost transformer must be used
to increase the voltage.
DANGER: All electrical lines must
be installed by qualified person-
nel only. All installations must
be electrically grounded and
conform to all local and national
electrical codes. Water Maze is
ETL listed.
The electrical connection for the
WATER MAZE is located on the
rear panel conduit box using a 1/2" knock-out. Electrical
conduit must be run all the way to the connection point
in accordance with local codes.
Fresh Water:
During initial start up, we recommend using fresh water in
the wastewater tank. Fill to mark indicated on sight tube
and remove garden hose.Connect the garden hose to the
WATER MAZE at the female connector located on the 3
point level controller. Open valve partially so back pres-
sure doesn't fill up sight glass tube.
Wastewater:
Wastewater is drawn directly into the evaporator using
the air pump supplied. A 20 mesh stainless steel filter
protects the pump from debris.The connection between
the above ground waste water tank and the machine is
made by using a 3/4" I.D. supply hose with common
WARNING
GAS LINE MUST
BE INSTALLED BY
QUALIFIED
PERSONNEL ONLY.
Control Rod:
Automatic wastewater control set points on the 3 Point
Level Controller turns the wastewater air pump on and
off to control the water level inside the evaporator. The
controller also shuts burner off if water level gets to low.
Temperature Control:
Dual, manual reset, and high temperature controls
monitor the internal temperature of the evaporator. If the
exhaust or water temperatures become too high (225°F)
the system shuts down. The temperature is usually in
the 180° to 190° range.
Regulator Venting:
A pressure regulator gas vent is provided. The gas vent
needs to be plumbed to the atmosphere. If the gas
regulator fails, the gas is automatically vented out-
side, preventing a gas buildup in the location of the
WATER MAZE. This must be vented to comply with
local and/or national codes.
Demister Box:
The demister box contains screens inside that prevent
large water droplets from going up the stack (screen
hole size is 3/16").
INSTALLATION
Location:
Locate the WATER MAZE evaporator on a level con-
crete surface in a room that is well ventilated. Protect the
machine from damaging environment such as wind, rain
and freezing temperatures. Leveling feet are provided
with all evaporators.
CAUTION: For natural gas, air ventilation should
be located near the ceiling. For liquid propane, air
ventilation should be located near the floor.
Gas:
The WATER MAZE evaporator is available for operation
in natural gas or liquid propane.
CAUTION:There are major differences in the adjust-
ments of the evaporators. Do not try to operate the
machine using the wrong gas.
The one inch (1") gas supply line on the WB-25, and
WB-50 and (one and one half inch (1-1/2") on the
WB-120) must have a minimum of 2 psig and a maxi-
mum of 10 psig and be of adequate size to supply the
necessary volume for proper burner operation.The high/
low gas switches require between 12-60 water column
inches.There must be a main gas shut-off valve (not pro-
vided) in the gas supply line located next to the WATER
MAZE which can be used as an emergency shut off for
repair or maintenance purposes.
HAZARDOUS
VOLTAGE. CAN
SHOCK, BURN OR
CAUSE DEATH.
DANGER

8WATERMAZE SERIES OPERATOR’S MANUAL
WB • 8.913-984.0-L
connectors supplied by the customer and is located on
the rear panel with the label, “Wastewater Inlet" (see
page 11). NOTE: The WATER MAZE is automatically
controlled by the 3 point level controller and will supply
wastewater as needed after startup.
CAUTION: Foaming detergents will affect the
evaporation process in the WATER MAZE. An
anti-foaming kit has been installed to control foam.
Venting:
Each evaporator must have its own vent stack. A 10"
vent pipe (WB-50) must be installed using the provided
exhaust stack adapter to the machine's exhaust stack
and be vented to the atmosphere. A 12" pipe must
be used for the WB-120 (see figure 4). The top of the
exhaust stack should be sufficiently above the roof to
allow for proper dispersion of the exhaust. It should be
unobstructed and in compliance with all local and federal
codes. Avoid bends if possible.
NOTE: If possible, the stack should be a single piece.
CPVC is the recommended stack material. If it has
seams, the seams must be sealed with a duct sealant
to prevent moisture leaks since the exhaust is 100%
saturated air. All stacking must be installed by qualified
personnel only.
NOTE: Exhaust stacking must be water tight.
A straight stack is always the best. If you must have
bends, use 45° not 90° elbows. No more than two bends
should be used. A vertical discharge design is our ONLY
recommendation for a rain cover. A vertical rain cover is
an over-sized piece of stack material that is concentric
with the stack. The cover extends 6" down over the top
of the stack to allow flexibility in positioning fasteners.
Both rain protection and back pressure reduction are
achieved with this design. It works because rain never
falls straight down; it always falls at an angle. Therefore,
the cover is made long enough so that any rain will hit the
cover’s inside wall. Rain then runs down the inner wall
and out the angular opening at the top of the exhaust
stack (see page 13).
Air:
Connect air to regulator, adjust to 60-100 psi at 10 cfm .
PRE-STARTUP CHECK LIST
Follow all pre-start procedures before attempting to start
the WATER MAZE.
1. Level evaporator using leveling feet or anchor ma-
chine to floor. Anchoring to floor is the preferred
method.
2. Verify the voltage, then connect the electrical lines
to the machine. To be done by qualified personnel.
3. Leak test connected gas line.
4. Connect the wastewater line from the storage
tank.
NOTE: the pH of the wastewater should be kept
between 8 - 10 in the storage tank.
5. Attach (black) N/O float inside wastewater tank just
above outlet so fill pump doesn't suck air.
6. Attach a high heat hose (180°-190°F) to the 3/4"
stainless steel elbow located at the back side of
evaporator for the auto purge cycle. NOTE: Do not
send waste back to fill tank.
7. Attach the stack to the exhaust stack flange.
8. Remove the plugs from the brass orifices on the
gas and air line and install the test valves with the
brass hose barb fittings (not included). (See page
18.) Make sure the gas line is shut off.
NOTE: The valves, fittings, and manometers are
included in the WATER MAZE set-up kit, #7-8200,
which must be purchased separately.
9. Connect the high pressure port of the 0 to 50 ma-
nometer to the bottom gas orifice port and open the
gas line.
NOTE: Make sure the manometer is zeroed before
taking readings. Use the zero set screw at the bot-
tom of the manometer. This will give you the static
gas pressure. For measuring the static gas pressure
on the WB-50/120, use the valve at the bottom of
the machine next to the high gas pressure switch
(see page 18). This pressure should be 45 water
column inches (wci). Close the valve and remove
the manometer.You must have between 12 and 60
wci before the high/low gas switches will allow the
burner to ignite.
10. Connect the 0 to 10 manometer to the hose barbs
on the gas line and open the valves with the low
pressure port of the manometer to the top port of
the orifice and the high pressure port to the bottom
port of the orifice.This will give you the pressure dif-
ferential between the high side, before the orifice,
and the low side, after the orifice. This will be used
later to figure the evaporation rate and to balance
the burner. This reading will be taken after start up
when the burner is being used (see page 18).
NOTE: Items 8 through 10 have been set at the
factory but installation conditions change so adjust-
ments need to be verified.
11. Open the valve on gas line and wastewater line.
12. Connect purge hose to bottom of combustion tank
and run to a separate holding tank. Do not connect
to feed tank.
13. Connect air.
14. Adjust anti-foam air to 2 psi and UV scanner air to
1/2 psi.

WATERMAZE SERIES OPERATOR’S MANUAL 9
WB • 8.913-984.0-L
OPERATING PROCEDURE
First, collect the waste stream.This can be accomplished
with the use of a catch basin, collection pit, sump or any
other process which collects the waste stream in one
location. The collection method should allow for oil and
solids separation. The waste stream must be stored in
an above ground tank to provide a gravity feed situation
to the waste stream pump of the evaporator.The WATER
MAZE air diaphragm pumps are self priming but we do
recommend a positive feed system (see figure 3).
1. A fresh water source is connected to the evaporator
for the initial fill. The evaporator must have a mini-
mum amount of water before it will operate.
2. With the gas line, gas vent, exhaust vent and elec-
trical connected and main disconnect turned on,
push the reset button F1/RST on the timer. NOTE:
Whenever the power to the evaporator goes out, the
reset button F1/RST on the timer must be pushed.
3. Turn the blower switch to the automatic position.This
will engage the blower which will push the water out
of the sparger tube. This causes the water level to
rise slightly in the liquid level float assembly. If the
low water light is still illuminated, attach a garden
hose to the back of the machine and fill the tank
until the light goes out. Now it is time to turn on the
burner.
4. Turn the burner switch to the on position.The system
now goes through the interlocks, 1) high/low gas
pressure; 2) air pressure; 3) closed gas solenoid,
4) low water, bottom setpoint on the 3 point level
control rod. Now a purge cycle will purge the sparger
tube with air for 15 seconds to insure that there is no
gas in the sparger tube. The burner then attempts
to ignite the soft start pilot flame. If there is not an
ignition, the UV scanner shuts the system down and
the start up sequence must be started over.
5. Once the burner ignites, the waste pump switch
can be turned on to introduce wastewater into the
evaporator. This will add wastewater to the system
through the back of the tank.
NOTE: The heat from the burner goes through the
sparger tube and out a slot in the bottom of the
sparger tube, and finally, into the surrounding water.
There are five stainless steel screens on a WB-50
and ten on the WB-120, that break down the size
of bubbles (from big to small) which increases the
surface area and transfers virtually 100% of their
heat to the water to increase saturation (screen hole
size is 1/16").
Auto Purge:
The unit will automatically purge the waste stream from
the combustion chamber at a set time depending on
your waste stream. This purged waste stream must
be sent to an appropriate discharge holding tank and
not back to the feed or inlet holding tank going to
WATER MAZE.
PRINCIPLES OF OPERATION
The WATER MAZE evaporator is designed to evaporate
wastewater. WATER MAZE uses a unique method of
introducing the wastewater directly into a 2000°F flame.
Using submerged combustion technology, the WATER
MAZE can obtain virtually a 100% heat transfer for a
more efficient and less costly method of evaporation.
In order to understand how this system works and why
it is superior to any other evaporator on the market, it is
important to understand a few aspects of relative humid-
ity, submerged combustion and efficiency ratings of this
type of equipment.
First, relative humidity is called “relative” because the
amount of moisture a given amount of air can hold is
directly related to its temperature. For example, let's say
it's snowing. If you were to take a cubic foot of outside
air at 20° F, with a relative humidity of 100% and bring
this air inside and warm it up to 72°F; the same air would
have the same amount of moisture in it, but would have
a relative humidity of only 15%. The warmer the air is,
the more moisture it can hold.With regard to the WATER
MAZE, this "thirst" or affinity for moisture in hotter air is
especially dramatic at temperatures above 150°F.
Second, it will be of value for you to be familiar with some
basics of water heating and evaporation. All of this type
of equipment will be rated in terms of British thermal
units (BTU's) per hour.
A BTU is the amount of heat necessary to raise one
pound of water one degree Fahrenheit.
Let's say we want to evaporate one pound of water:
In order to get our pound of water from 60°F to 212°F,
we will have to add 152 BTU's to it (212°F minus 60°F).
This is called “sensible” heat.
Once this pound of water reaches 212°F, 970 BTU's must
then be applied to turn it into a pound of steam vapor still
at 212°F. We just want to change it from liquid water to
steam vapor and not raise the temperature at all. This
is called “latent” heat.
Therefore, to get our pound of 60°F water to 212°F
steam took 1122 BTU's.
A gallon of water weighs 8.34 pounds. In order to make
a gallon of water evaporate, we have to subject it to 8.34
lbs. x 1122 BTU's or, 9357 BTU's.

10 WATERMAZE SERIES OPERATOR’S MANUAL
WB • 8.913-984.0-L
WB-50
INSTALLATION DRAWING
1" Inlet
Gas Line
Wastewater
Inlet
Vent
Pipe
Figure 1

WATERMAZE SERIES OPERATOR’S MANUAL 11
WB • 8.913-984.0-L
WB-120
INSTALLATION DRAWING
1-1/2"
Inlet Gas
Line
Wastewater
Inlet
Vent
Pipe
Auto Purge
Port
Figure 2

12 WATERMAZE SERIES OPERATOR’S MANUAL
WB • 8.913-984.0-L
STORAGE TANK CONFIGURATION
Wastewater
Storage Tank
Wastewater Inlet
Inline
Filter
Bulkhead
Strain
Relief
Float
Switch
Wastewater
Shut-Off Valve
(Customer Supplied)
Wastewater
Inlet Connection
(Customer Supplied)
Junction
Box
Figure 3
Filter
Housing

WATERMAZE SERIES OPERATOR’S MANUAL 13
WB • 8.913-984.0-L
EXHAUST STACKING CONFIGURATION
Roof
2'
Minimum
10" Flue
Exhaust
Pipe
Stack
Flange
Flue Raincap
Figure 4

14 WATERMAZE SERIES OPERATOR’S MANUAL
WB • 8.913-984.0-L
WB-50
FRONT VIEW
89139840-27
Electrical
Box
Glass View
Port
Transformer
3 Point Level
Control Rods
Auto Flush
Flame
View
Port
Photohelic
Gauge
(Option)
Demister
Screens
Spark Plug
Burner Cycle
Timer
Soft Start Gas
Valve Adjuster
(WB-50)
Main Gas Valve
Adjuster
Soft Start
Solenoid
(WB-50)
Level Controls
NEMA Box
Figure 5

WATERMAZE SERIES OPERATOR’S MANUAL 15
WB • 8.913-984.0-L
WB-120A
FRONT VIEW
89139840-26
3 Point Level
Control Rods
Demister
Screens
Main Gas Valve
Adjuster Burner 1
Transformer
Electrical
Box
Flame View
Port
UV Scanner
Burner 2
Burner
Cycle
Timer Soft Start Solenoid
Burner 1
Soft Start Gas
Valve Adjuster
Burner 1
Glass View
Port
Glass
View
Port
Level Controls
NEMA Box
Figure 6
Auto Flush

16 WATERMAZE SERIES OPERATOR’S MANUAL
WB • 8.913-984.0-L
START-UP PROCEDURES
SHUT DOWN PROCEDURES
PANEL PROCEDURE RESULT
Turn on the main disconnect switch #1. Timer (LED screen) lights up.
Press F1/RST (reset button)
#2 on cycle timer.
Powers up the timer (LED screen).
Voltage light comes on.
Turn on the blower switch #3 to
desired position (manual or auto-matic).
“Manual” will bypass the liquid level float
in the customer's holding tank. “Auto-
matic” will allow the float to control the WATERMAZE
on/off operation of the blower.
Blower light turns on. Water
level in the sight tube will rise
as the water is evacuated
from the sparger tube.
Turn on the burner switch #4. The interlocks are checked and a green light will
be seen on the Veri-Flame. If there is a red light
on the Veri-Flame, there is a problem with one of
the interlocks that must be corrected.
After the interlocks are proven, the blower
will purge the sparger tube for 15 seconds,
then the burner will ignite. If the burner does
not ignite within eight seconds, the “UV scanner”
will shut the system down. At full burner
ignition, burner light turns on.
Turn on the pump switch #5. As water is evaporated, the wastewater
pump will automatically refill the tank.
Turn defoamer switch #6 to auto mode. Anti-foam will be added when fill pump is on.
If more defoamer is needed, turn the feed
adjustment (See page 48, figure 16) clockwise
to increase the speed of defoamer pump.
PANEL PROCEDURE RESULT
(To locate individual items,
please see above.)
Turn defoamer switch
#6 to middle off position.
The defoamer
light goes out.
Turn the pump
switch #5 off.
The pump light goes out. The waste stream
pump shuts down and the solenoid valve closes.
Turn the burner
switch #4 off.
The burner light goes out. The burner shuts
down. The gas solenoid closes and the power
is cut to the transformer preventing a spark.
After turning the burner off, let the blower
run for at least one minute before turning it off.
Turn the blower
switch #3 off.
The blower light goes out. At this point, the
blower shuts down and water from the tank
enters into the sparger tube.
Turn the main
disconnect switch #1 off.
The voltage light goes out. All power to the
evaporator is disconnected except to timer.
The water in the evaporator is still HOT at this
point. Allow the water to cool before any
maintenance is done, i.e., sludge removal.
If the evaporator is to be left off overnight or
longer, shut off the gas supply to the evaporator.
89139840-24
6
3
4
51
2
89139840-25

WATERMAZE SERIES OPERATOR’S MANUAL 17
WB • 8.913-984.0-L
SETTING THE BURNER
The quickest and easiest way to adjust the air and gas
differential to the appropriate settings listed below is to
purchase the WATER MAZE set up kit (#7-8200). Refer
to figure 7 for locations on setting the burner. Shut main
gas valve off. With 7/16" wrench remove brass plugs
from all metering orifices on back side of machine. Install
brass valves included in set up kit into each position
and close. Turn gas main valve back on. To set static
pressure, use 0 - 50 manometer on (Dor E). To adjust
setting to desired 45 wci, remove cap on gas regulator
(F) and turn inside adjustment screw clockwise for higher
pressure, counterclockwise for lower pressure. Replace
cap. Start machine by turning the blower switch to the
“auto” position and burner switch to the “on” position.
Once the burner lights, use the 0 - 10 manometer to set
the air differential at (B). Note: lower port is high pres-
sure and upper port is low pressure.With hoses in posi-
tion, open brass valves. Set air differential as per chart
below. Note: needle will shake; pinch both hoses lightly
together to read number. Adjust by opening or closing
main air butterfly and secondary air butterfly (located
on left side of burner, up top). Close brass valves. Set
the gas differential the same way as the air. Note: read
NATURAL GAS:
LIQUID PROPANE GAS:
chart for proper gas used. Attach 0 - 10 manometer at
(C) and set as per chart.The adjustment valve is located
to the right of the burner up top. Remove the brass cap
and adjust with a standard screwdriver.You will have to
set one burner at a time on a WB-120. Once adjusted,
shut off burner and blower. Shut off main gas line. Now
remove the brass valves used with the manometers and
replace plugs into the air and gas orifices.Turn the main
gas back on and follow the procedures for start up.Your
evaporator is now in service.
SOFT START IGNITION
To provide a smooth ignition and meet all gas train
standards, the WB-50 and WB-120 come standard with
the soft start ignition system. Before trial of ignition the
Veri-Flame will make sure the top gas solenoid is closed
(proof of closure). Once closed, the Veri-Flame will try for
a pilot flame. After approximately 8 seconds, the proof
of closure solenoid will close and allow the main gas
solenoid to open slowly.
Soft start settings: The gas metering orifice SBO-A-1
(A) for the soft start needs to be set on 7 wci for the gas
differential. Follow (Setting The Burner) instructions for
setting the soft start gas differential.
UNIT GPH METERING
ORIFICE
GAS
DIFFERENTIAL
METERING
ORIFICE
AIR
DIFFERENTIAL
WB-50A 60 SBO-C-3 6 SBO-677 9
WB-120A 120 SBO-C-3 6 SBO-677 9
UNIT GPH METERING
ORIFICE
GAS DIFFERENTIAL METERING
ORIFICE
AIR DIFFERENTIAL
WB-50A 60 SBO-D-7 6.5 SBO-677 8
WB-120A 120 SBO-D-7 6.5 SBO-677 8

18 WATERMAZE SERIES OPERATOR’S MANUAL
WB • 8.913-984.0-L
WATER MAZE
BURNER ADJUSTMENT
Soft Start
Gas Pipe
High
Static Gas
WB-50/120 Models
Main Gas Pipe
(All Models)
Air/Gas
Differential
Low
High
Main Air Pipe
(All Models)
Low
WB-50/120 Models
Test Valves
Main Air
Valve
Gas
Regulator
Cap
Static Gas
Check Port
High Switch
Low
Switch
Figure 7

WATERMAZE SERIES OPERATOR’S MANUAL 19
WB • 8.913-984.0-L
FOAMING
The WATER MAZE uses a high volume of air to operate
the burner, which pushes the heat out of the sparger
tube and into the evaporation tank. There, the air goes
through baffle screens to break the air bubbles down
into smaller sizes. This process can cause excessive
foaming from the detergent used in the washing process
if it has any kind of foaming agents.This foam interferes
with the evaporation process of the WATER MAZE and
the foam will go up the stack causing problems with the
venting of the WATER MAZE.
The best solution is not to use detergents or cleaning
compounds that cause foaming. An anti-foam pump is
a standard feature on this machine. WATER BLAZE has
defoamer chemicals available, developed for use in the
evaporator.
CONVERTING NATURAL GAS
TO L.P. GAS
WARNING: Before converting
from natural gas to L.P. gas, be
certain that the evaporator is shut
down, the water has been cooled,
the gas line is shut off and the
power is disconnected.
The WATER MAZE can be ordered
from the factory in natural gas or
L.P. gas. Once they are in the field,
you must order a conversion kit to
change from natural gas to L.P. gas
or from L.P. gas to natural gas.
WB-50/120:
The conversion kit for the WB-50/120, natural gas to
L.P, is # 7-8112.
Remove the SBO-D-7 and replace it with SBO-C-3.
(See items 19 and 21 on pages 42 & 43.) Change the
regulator orifice. Remove the 5/8" orifice and replace
with the 1/2" orifice.
To replace the orifice, disconnect the 3/4" gas line at the
unions above and below the metering orifice. Remove
the section of pipe by unscrewing it from the orifice and
then remove the orifice by unscrewing it from the pipe
above it.
Install the new orifice by applying pipe sealant to the
pipe coming from the gas solenoid valve and screw the
orifice to the pipe. Apply pipe sealant to the section of
pipe that was removed and screw it into the bottom of
the orifice. Reconnect at the unions.
NOTE: Be certain that the orifice is installed right side
up or the system will not work properly. The orifice has
an arrow indicating the flow. If there is not an arrow, look
on the side of the orifice where the plugs are located.
One has green paint around it, the other has red paint.
The plug with green paint goes on the top.
Change the regulator orifice in the gas regulator from
1/2" for natural gas to 3/8" for L.P. gas. Remove the
regulator at the unions. The orifice sits in the tee below
the regulator unions. Use a 1" socket with an extension
to remove the orifice. Put the new 3/8" orifice in. Replace
the regulator.
Replace the “Natural Gas Only” label with the “L.P.
Gas Only” label.
Conversion Kits:
8.906-066.0 Factory Conversion from Natural Gas
to L.P. WB-50/120, Qty 2 for WB-120
8.906-072.0 Field Conversion Kit from Natural Gas
to L.P. WB-50/120, Qty 2 for WB-120
8.906-069.0 Field Conversion Kit from L.P. to Natural
Gas WB-50/120, Qty 2 for WB-120
Standard WATER MAZE machines are natural gas fired
and are so constructed. When propane fuel is specified
please add the appropriate conversion part number to
the order. Thank you.
WARNING
RISK OF FIRE,
EXPLOSION OR
SERIOUS BURNS:
SHUT DOWN UNIT,
SHUT OFF GAS LINE
AND DISCONNECT
POWER BEFORE
CONVERTING.

20 WATERMAZE SERIES OPERATOR’S MANUAL
WB • 8.913-984.0-L
The Veri-Flame is the controller which proves all of the
interlocks. It provides for a purge cycle to insure that
there are no combustibles in the sparger tube before
the trial for ignition (TFI). The length of the purge cycle
is determined by the settings on the Veri-Flame. It is
preset at the factory for 15 seconds.
If you need to check the settings on your Veri-Flame
or if you replace a Veri Flame and it needs to be set,
remove the screws holding the cover on and unplug the
cover from the back. Dipp switches are located on the
reverse side. Set the eight switches as follows: switch 1
ON, switch 2 OFF, switch 3 ON, switch 4 ON, switches
5, 6, 7 and 8 OFF.
If switch 1 is ON, the burner will recycle once after an
air or main flame failure. Otherwise, the system will shut
down.
A pilot light is not used so switch 2 is set to OFF. Switch
3 controls the amount of time the machine has for TFI.
With this switch set to ON, the machine has 10 seconds
for TFI. Switches 4 through 8 control the amount of
purge time before TFI. Switch 4 gives the machine a 15
second purge before TFI.
A Veri-Flame and U.V. scanner tester is available
(#7-8063).
3 POINT SENSOR CONTROL
The 3 point sensor control is part of the safety interlock
system and also controls the wastewater air diaphragm
pump.
The bottom rod is the low water safety position. If the
wastewater level is too low, this rod, working through the
Veri-Flame, will not allow the burner to ignite. When the
wastewater level drops to the position of the middle rod,
there is a demand for water and the wastewater pump
turns on. The air diaphragm pump continues to run until
the top rod is reached by the wastewater. At this point
the pump shuts off. When the level drops to the middle
rod, the wastewater pump restarts again.
VERI-FLAME
#7-8061
"Flame Signal" – should be red
Button in "Out" position
"Air Failure" – Blower
"Flame Failure" – UV Scanner
"System Error" – These are your
interlocks, this light shouldn't be
illuminated, if it is check interlocks.
"Interlocks Closed" – should be green
Dipp Switches
Figure 8