Accurex Waterwash Hood User Manual

Part #

Waterwash Hoods

Installation, Operation and Maintenance Manual

Please read and save these instructions. Read carefully before attempting to assemble, install, operate or maintain the
product described. Protect yourself and others by observing all safety information. Failure to comply with instructions
could result in personal injury and/or property damage! Retain instructions for future reference.

Waterwash Hoods

TABLE OF CONTENTS

How To Use This Manual .................................................................... 4

Receiving and Handling ..................................................................... 4

Storage .................................................................................. 4

Waterwash System Function ................................................................. 4

Waterwash Components..................................................................... 5

Typical Installation ......................................................................... 5

Continuous Capture Plenum ........................................................... 8

Double Island Style Hood ............................................................. 9

U Channel Strips..................................................................... 9

Ductwork.......................................................................... 10

Installation Instructions for the External Supply Plenums.......................................... 11

Installation Instructions for the Backsupply Plenum BSP.......................................... 13

Installing the Supply Duct Collar ....................................................... 13

Hanging the Backsupply Unit ......................................................... 13

Hanging the Hood .................................................................. 14

Air Diffusers ....................................................................... 14

Enclosure Panel Installation Instructions.......................................................15

Filler Panel Installation Instructions ........................................................... 16

End Skirt Installation Instructions............................................................. 17

Backsplash Panel Installation Instructions ..................................................... 18

Duct Collar Installation Instructions for XB, XW, XK and XX Series Hoods ............................ 20

Plumbing ................................................................................ 21

Electrical Connections ..................................................................... 23

Electrical Wiring .................................................................... 23

Startup, 24/7 Timer, Pump Settings, Detergent Operation .................................. 25

Daily Operation of Waterwash Hood....................................................27

Sequence of Operation ............................................................28-29

Balancing the Kitchen Exhaust............................................................... 31

Short Circuit Hoods ................................................................. 34

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October 2010

TABLE OF CONTENTS CONT’D

Field Wiring for Ansul Snap-Action Switch ..................................................... 35

Overall Wiring Plan View .................................................................... 36

Wiring for Hood Switch Panels............................................................... 37

Circuit Diagram ........................................................................... 38

Waterwash Control Panel .................................................................39-44

Maintenance ............................................................................. 45

Troubleshooting Guide ...................................................................45-49

Replacement Parts/Kits ..................................................................50-51

Waterwash Start-up Checklist .............................................................52-53

Notes for Maintenance Checks ............................................................54-55

Warranty ................................................................................ 56

October 2010

3

3

HOW TO USE THIS MANUAL

Read and save these instructions. This manual is designed to assist qualified field service, operating and
maintenance personnel with the installation, operation, and maintenance of Accurex canopy type kitchen hoods
and accessories.

Procedures described in this manual should be followed in the order they appear, with attention to all safety and
caution statements.

RECEIVING, HANDLING & STORAGE:

Upon receiving the equipment, check for both obvious and hidden damage. If damage is found, record all
necessary information on the bill of lading and file a claim with the final carrier. Check also to be sure that all
parts of the shipment, including accessories, are accounted for.

If a kitchen hood must be stored prior to installation, (or for any long period) it must be protected from dirt and
moisture. Indoor storage is recommended. For outdoor storage, cover the hood with a tarp to keep it clean, dry,
and protected from UV (Ultra Violet) radiation damage.

NOTE: The kitchen hood is shipped with a plastic film attached to the surface. The film is to protect the panels
from minor scratches during handling and shipment. This film must be removed prior to assembling the system.
When the system is operating, the film will melt and bake on to the surface. Once the film is removed caution
should be used in handling the parts.

Improper storage which results in damage to the unit will void the warranty.

WATERWASH SYSTEM FUNCTIONS:

Accurex waterwash hoods are designed for three primary functions:

1) Capture and contain the effluent produced by the cooking process.

2) Remove grease and other contaminants from the airstream with a series of extraction baffles.

3) Wash the baffles and other surfaces within the exhaust plenum to remove contaminants.

NOTE: The functions listed above require the control center to be wired to the exhaust fan and plumbed.

Normal Exhaust Operation and Contaminant Collection:

The system’s exhaust fan is manually controlled by a push-button switch (Start Fan) located on the face of the
waterwash control station. The exhaust system operates until the Stop Fan/Start Wash push-button switch is
pressed.

Optional Continuous Cold Water Mist:

The optional continuous cold water mist is controlled by the same push-button switch (Start Fan). With this
option, all hoods with this option are sprayed continuously when the fan is on. This feature acts as a spark
arrestor for solid fuel applications, as per NFPA 96, Standard for Ventilation Control and Fire Protection of
Commercial Cooking Operations. This does not have to be all hoods - can be just the solid fuel hoods.

Cleaning Cycle:

A factory programmed controller triggers the waterwash function when the exhaust fans are shut down at the
end of each day’s cooking operations. A pressurized spray of hot water and detergent cleans the hood in a
timed cycle. When the cleaning cycle is complete, the controller runs the exhaust fans briefly to remove steam
from the exhaust system. The controller then automatically resets itself. If the kitchen is closed for a day, the
wash cycle will skip as long as the start fan button has not been pushed.

For multiple hoods totalling over 20 ft. 0 in. in length, systems are designed to wash each hood or group of
hoods sequentially. (Hoods totalling up to 20 ft.0 in. in length can be washed as a single unit.)

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October 2010

Fire Mode (Optional):

The waterwash system also provides water spray for the exhaust plenum when the system is in fire mode. This
is in addition to the hood’s automatic fire suppression system. When the fire suppression system discharges,
it activates the waterwash system (without the detergent) and the optional continuous cold water mist to spray
water within the exhaust plenum and turns on the fan circuit. The system will shut off when the fire protection
system is reset. It can also be shut off manually by turning off the water flow in the waterwash control station.
Exhaust fan will be on, Supply fan off

Typical Installation:

Fig. 1

Vacuum Breaker

Detergent Line

Wiring to:

115 VAC 20 AMP service
Fire Sup. System NC Switch
Fan Control Center
Opt. Solenoid Valve

for Seq. Wash

Optional Continuous Cold
Water Mist Supply Line

Hot Water/Detergent to Hood

Detergent Check Valve

Internal components of hood
and control station are factory
piped and wired. All external
piping and wiring is by others.

Exhaust Duct Collar

Waterwash Hood

Junction Box ­Hood Lights

Hot Water Supply
to Control Station

October 2010

Waterwash
Control Station

Optional

Cold Water Supply
to Control Station

Drain Pipe

The system shown includes
a vacuum breaker for
backflow prevention. Some
state plumbing codes
require a reduced pressure
backflow preventer. See
page 7 for detailed control
panel layouts of each type.

5

5

SYSTEM COMPONENTS:

Hood:

The hood is shipped from the factory prepiped and ready to install. All waterwash components within the hood
are complete and ready for connection to hot water, electrical sources, the sanitary sewer drain and optional
cold water. All piping to and from the waterwash control station and the hood is by others. Wiring from the
control panel to the hood (for lights) is by others. All plumbing and wiring must conform to plumbing and
electrical codes. See Figure 1(previous page) for typical installation and location of electrical and plumbing
components.

Duct collars are also mounted at the factory unless requested otherwise.

Waterwash Control Station:

The waterwash control station contains all of the water and electrical controls in two separate compartments.
(See Figs. 2, 3, 4, 5, 6 & 7). The electrical side includes all electrical components, connections, and on/off
switches. These switches are illuminated and are mounted on the face of the cabinet. The water side includes
hot water connections, pressure/temperature gauges, the detergent reservoir and pump, water hammer arrestor,
the water solenoid valves, and optional continuous cold water mist piping.

Vacuum Breaker (shipped loose for field installation):

The vacuum breaker is installed at the highest point in the system’s piping to prevent backflow when there is no
water pressure to the hood. It must be installed a minimum of 6 in. above the hood water supply line
(See Figs. 2, 3 & 4).

Reduced Pressure Backflow Preventer - RPBP (shipped loose for field installation):

Where building codes require a reduced pressure backflow preventer, it will be provided in lieu of a vacuum
breaker when ordered. The reduced pressure backflow preventer is installed beneath the control panel (See
Fig. 5, 6 & 7). May by ordered mounted in 48 in. tall cabinet.

Detergent Pump-Related Components (shipped loose for field installation—installed
in RPBP systems. See page 42 ):

 •Detergentlinecheckvalve

 •Detergenttube(1/4in.I.D.,3/8in.O.D.)

Optional Features:

24 Hour / 7 Day Timer:

This feature allows the cleaning cycle to begin at any preset time after the fans are shut down, rather than
immediately after. This allows time, for instance, for completion of dishwashing to avoid a shortage of hot water.
Fans must be turned OFF just as with the standard cleaning cycle. Maximum six start times.

Multiple Hoods Sequenced Wash:

Where more than one hood must be washed, the control station is set up to wash each hood individually in a
prescribed sequence. This ensures that there will be adequate hot water for all hoods. Individual water solenoid
valves are provided for each hood to be washed in a multiple sequence. Maximum five sequences.

(Sequence solenoid valves are shipped loose for systems with vacuum breakers or optional continuous
cold water mist. They are mounted in the control station for standard systems with reduced pressure
backflow preventers.)

Low Detergent Indicator Light:

A sensor and indicator light are available to alert the operator when the detergent tank requires filling.

Continuous Cold Water Mist:

This feature continuously sprays a fine water mist in the exhaust plenum of the hood. The continuous cold water
mist is controlled by the same push button switch as the fan.

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October 2010

Fig. 2 Std. Piping with Vacuum Breakers

To Hood
3/4 in. or 1 in.

Piping

Connection

by

Others

Optional Low
Detergent
Indicator Light

Fire Mode
Indicator Light

Hood Lights

Stop Fan/Start Wash Switch

Hot Water Inlet

Start Fan
Switch

Fig. 5 Std. Piping with Reduced Pressure

Backflow Preventer

Disconnect
Switches

Field Wiring
Terminal Strip

Fan Relay

Optional 24
Hour Timer

Fuse Block
Factory Wiring

Terminal Strip
Programmable

Piping by

Controller

others

Vacuum Breaker

Detergent

Check Valve

Union

Detergent

Pump

Water

Solenoid Valve

Water Hammer

Arrestor

Pressure and

Temperature

Gauge

6 in.

Fig. 3 Optional
Piping for
Sequence Wash

Water Solenoid
Valve(s)

To Hood
3/4 in. or 1 in. Connection

6 in.

To Hood 3/8
in. Connection

Solenoid Valve

Pressure

Gauge

Detergent

Injection Point

Pressure

Reducing Valve

and Strainer

Hand Valve

Reduced Pressure
Backflow Preventer

Fig. 6 Optional
Piping for

Water

Sequence Wash

Solenoid
Valve(s)

To Hood
3/4 in. or 1 in. Connection

Hand Valve

Detergent Tank

Fig. 4 Piping with Vacuum Breakers and

Optional Continuous Cold Water Mist

October 2010

Cold Water Inlet

Detergent
Line Strainer

Fig. 7 Piping with Reduced Pressure

Backflow Preventer and Optional

Continuous Cold Water Mist

7

7

2. RAISE ALL HOODS INTO APPROPRIATE LOCATION
AND

SUPPO

RT PER CONSTRUCTION PLAN

S.

3. FASTEN TOP ANGLES TOGETHER USING 1/4 in. BOLTS & NUTS (BY OTHERS

).

4. FASTEN HOODS TOGETHER USING U-CLIPS, 1/4 in. BOLT

S

5. CAULK ALL SEAMS AS NECESSARY

.

& CAP NUTS AS INDICATED

.

1. REMOVE SUPPORT ANGLE ON OPEN END PANEL

.

H

OOD

ACO

RN N

UT

BOL

T

U-CLIP

CAULK

H

OOD

RN N

UT

BOL

T

-CLI

P

AUL

K

Front

1

/2 in. threaded rod by

Note: If a utility distribution system (UDS) is part of the kitchen package, allow adequate room for it before
mounting hood(s) and welding ductwork. Check construction documents.

Fig. 8

INSTALLATION

NOTE: If you have a Backsupply
Plenum (BSP), this must be
installed before the hood. Please

Bottom

Pallet

Protective Material

Carefully remove the packing crate. Place some protective material on the floor next to the crate to avoid
damaging the hood as it is tipped on its side. (See Fig. 8) Tip the hood carefully onto the protective material.

If you have filler panels, install them now. Please see page 16. If you have integral filler panels, no
additional installation is needed.

Insert 1Ú2 in. diameter threaded rod (by others) into hanger brackets on hood top. (Fig. 9, Pg. 10) Check the
engineering drawings for proper hood height above finished floor. Accurex recommends that the hoods be hung
6 feet 6 inches above the finished floor. Raise and hang hood from adequate roof or ceiling supports. All hanger
brackets must be used and hood must be properly supported while lifting to prevent damage or distortion to the
hood. The hood must be hung level to or slightly pitched toward the grease drain.

Hood Model Width (in feet)

see Page 13.

For Wall/Single Island Style Hoods,
prior to installation, check with
local authorities having jurisdiction
on clearances to combustible
surfaces, etc.

With the hood still inside its
packing crate, position the unit
beneath its installation location.

Wall Canopy 4 4.5 5 5.5

XWEW 53 lbs/ft. 56 lbs/ft. 59 lbs/ft. 62 lbs/ft.

XWFW 60 lbs/ft. 60 lbs/ft. 62 lbs/ft. NA

XWAW NA 60 lbs/ft. 65 lbs/ft. 70 lbs/ft.

XWCW NA 65 lbs/ft. 70 lbs/ft. 75 lbs/ft.

XWSW 60 lbs/ft. 65 lbs/ft. 70 lbs/ft. 75 lbs/ft.

For double island hoods, multiply the weight by two.

Continuous Capture Plenum Hoods

Remove the support angles on the open end panels.
(See Fig. 8A) Use the installation procedure described
above, for single island hoods to install and level both
hoods. After leveling, secure the hoods together by
tack welding and/or bolting the top angles. Fasten the
hoods together using u-clips and bolts. (See Fig. 8B)
Caulk this joint with NSF approved silicone caulk (GE
SCS-1009 or its equivalent). The caulk is not provided.

Fig. 8A

Fig. 8B

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October 2010

Double Island Style Hoods

HOOD FRONT

ITEM-1B

DOUBLE ISLAND

CLIP

ITEM-1A

HOOD FRONT

ITEM-1B

DOUBLE ISLAND

ITEM-1A

Before hanging the hoods, please verify the hood marks to make sure the correct hood is
hung on the correct side.

A double island hood is created by installing two wall style hoods back to back. Use the installation procedure
described on page 8, for single island hoods to install and level both hoods. After leveling, secure the hoods
together by tack welding and/or bolting the rear mounting brackets. Caulk this joint with NSF approved silicone
caulk (GE SCS-1009 or its equivalent). The caulk is not provided.

Installing U Channel Trim Strip

1. After the hood is hung in position

and leveled, apply caulk to the
inside edge of the double island clip
(see detail).

2. Position and install the clip by

tapping into position along clip
(friction fit).

3. Caulk edges to seal out grease and
allow for ease of cleaning. Caulk with

NSF approved silicone caulk (GE SCS-
1009 or its equivalent). The caulk is not
provided.

HOOD-1A

HOOD-1B

SILICONE CAULK
(GE SCS 1009)

DOUBLE ISLAND
CLIP

Note: The installation of the canopy hoods shall be in accordance with NFPA 96 (latest edition), Removal of
Smoke and Grease-laden Vapors from Commercial Cooking Equipment.

See separate instructions for proper installation of enclosure panels, backsplash panels, and end skirts when
provided. Please see Pages 15 -19 for the installation instructions.

After the hood is installed, remove all protective plastic.

Note: Accurex does not recommend walking or standing on the hood top as damage can result. If you must walk
on the hood top, protect the hood with additional support or planks for flooring.

October 2010

9

9

DUCTWORK

1

/2 in. threaded rod by

others

Exhaust

Fig. 9

As specified in NFPA 96, Ch. 7.5 (latest
edition), exhaust duct systems must be
constructed in the following manner:

Materials. Ducts shall be constructed
of and supported by carbon steel not
less than 1.37mm (.054 in.) (No. 16 MSG)

Fig. 2
in thickness or stainless steel not less
than 1.09mm (0.043 in.) (No. 18 MSG) in
thickness.

Front

Installation: All seams, joints, penetrations, and duct to hood collar connections shall have a liquid tight
external weld. If you have an Automatic Fire Damper please refer to that manual for installation

instructions.

Supply

Supply ductwork (where applicable) should be connected to the hood in a manner approved by the local code
authorities.

Note: For hoods with fire dampers in the exhaust and supply duct collars, an access panel for cleaning and
inspection shall be provided in the duct. This panel shall be as close to the hood as possible and not exceed 18
inches from any hood damper.

For proper installation of duct collars when they are shipped unattached, see page 20.

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October 2010

INSTALLATION INSTRUCTIONS FOR EXTERNAL SUPPLY PLENUMS

HANGER BRACKET

END VIEW

THREADED ROD

HOOD

ATTACH HANGING CLIP TO
HOOD STANDING SEAM WITH
THE SUPPLIED "C" CLAMPS

(OPTIONAL: DRILL AND BOLT A
1/4-20 SS BOLT THROUGH
THE CLIP AND HOOD STANDING
SEAM)

HANGING METHODS FOR SUPPLY PLENUMS
ASP, FSP AND VSP

TOP VIEW
HOOD

TOP VIEW
SUPPLY PLENUM

2 CLIPS ARE NEEDED

3 CLIPS ARE NEEDED

FOR PLENUMS > 96"

FOR PLENUMS <= 96"

THE THIRD CLIP IS LOCATED
IN THE CENTER OF THE PLENUM

LENGTH

THREADED ROD

OPTION #3

OPTION #1

ON THE END OF THE HOOD

HANGING CLIP COULD BE 23.5" FROM
END IF THERE IS A UTILITY CABINET

OPTION #1

OPTION #1

THE HOOD AND IS MOUNTED TO THE ASP

HOOD UP CANTILEVERS OVER THE END OF

THE UNI-STRUT (U-CHANNEL) THAT HOLDS THE

HANGER BRACKETS

OPTION #2

OPTION #2

UNI-STRUT SUPPLIED BY OTHERS

OPTION #1 = HANGING CLIP
OPTION #2 = UNI-STRUT
OPTION #3 = THREADED ROD

OPTIONAL UTILITY CABINET

SUPPLIED BY OTHERS

ASP, FSP, VSP

11.5

23.5

END VIEW

THREADED ROD

HOOD

ATTACH HANGING CLIP TO
HOOD STANDING SEAM WITH
THE SUPPLIED "C" CLAMPS

(OPTIONAL: DRILL AND BOLT A
1/4-20 SS BOLT THROUGH
THE CLIP AND HOOD STANDING
SEAM)

HANGING METHODS FOR SUPPLY PLENUMS
ASP, FSP AND VSP

TOP VIEW
HOOD

2 CLIPS ARE NEEDED

3 CLIPS ARE NEEDED

FOR PLENUMS > 96"

FOR PLENUMS <= 96"

THE THIRD CLIP IS LOCATED
IN THE CENTER OF THE PLENUM

LENGTH

THREADED ROD

OPTION #3

OPTION #1

OPTION #1

THE HOOD AND IS MOUNTED TO THE ASP

HOOD UP CANTILEVERS OVER THE END OF

THE UNI-STRUT (U-CHANNEL) THAT HOLDS THE

HANGER BRACKETS

OPTION #2

OPTION #2

UNI-STRUT SUPPLIED BY OTHERS

OPTION #1 = HANGING CLIP
OPTION #2 = UNI-STRUT
OPTION #3 = THREADED ROD

OPTIONAL UTILITY CABINET

SUPPLIED BY OTHERS

ASP, FSP, VSP

11.5

USING THE SUPPLY PLENUM CLIP or UNI STRUT

OPTION #1

HANGING CLIP COULD BE 23.5" FROM
END IF THERE IS A UTILITY CABINET
ON THE END OF THE HOOD

OPTIONAL UTILITY CABINET

11.5

23.5

OPTION #2

UNI-STRUT SUPPLIED BY OTHERS

TOP VIEW
HOOD

OPTION #1

FOR PLENUMS <= 96"
2 CLIPS ARE NEEDED

FOR PLENUMS > 96"
3 CLIPS ARE NEEDED
THE THIRD CLIP IS LOCATED
IN THE CENTER OF THE PLENUM

LENGTH

OPTION #1

ATTACH HANGING CLIP TO
HOOD STANDING SEAM WITH
THE SUPPLIED "C" CLAMPS

(OPTIONAL: DRILL AND BOLT A
1/4-20 SS BOLT THROUGH
THE CLIP AND HOOD STANDING
SEAM)

TOP VIEW
SUPPLY PLENUM

HANGER BRACKET

Using the Supply Plenum Clip

1. Bolt the hanging clip to the supply
plenum - 2 clips are needed for plenums
less than 96 in. long and 3 for plenums
greater than 96 in. The third clip is
located in the center of the plenum
length. If there is a utility cabinet, the
hanging clip should be 23.5 in. from the
end to the hood.

2. Using the C-Clamps provided, clamp the
supply plenum hanging clip to the hood
standing seam. Option: Drill and bolt a
1/4-20 SS bolt through the clip and hood
standing seam.

"C" CLAMP

HOOD FRONT

HOOD STANDING SEAM

HANGING CLIP BOLTED TO PLENUM SHELL

HANGING CLIP

SUPPLY PLENUM SHELL

OPTION #1
HANGING CLIP

October 2010

Supply Plenum Clip

Using the UNI-STRUT

1. The uni-strut (supplied by

others) that holds the hood up
cantilevers over the end of the
hood and is mounted to the
supply plenum hanger brackets.

11

11

INSTALLATION INSTRUCTIONS FOR EXTERNAL SUPPLY PLENUMS

BACKSUPPLY BACKSHELF HOODBACKSUPPLY CANOPY STYLE HOODBACKSUPPLY CANOPY STYLE HOOD

ATTACHED AIR CURTAIN CANOPY STYLE HOOD ATTACHED AIR CURTAIN CANOPY STYLE HOOD

BACKSUPPLY BACKSHELF HOODBACKSUPPLY CANOPY STYLE HOODBACKSUPPLY CANOPY STYLE HOOD

1/4 in.

SS NUT

1/4 - 20 UNC - 2A

SS BOLT

SS FLAT WASHER

HOOD

HOLE SIZE 9/32 in.

USING A THREADED ROD

Installing External Supply Plenum

1. Insert 1Ú2 in. diameter threaded rod (by others) into
hanger brackets on the supply plenum top. Raise and
hang the external supply plenum from adequate roof or
ceiling supports.

2. The external supply plenum should be resting lightly
against the hood. The hood is used to position the plenum
only, it is not intended to support the plenum. All hanger
brackets must be used and the plenum must be properly
supported while lifting to prevent damage or distortion.

ASP - Air Curtain Supply Plenum

The supply plenum must be hung level to operate properly.

(Optional fastening of supply plenum to hood - see

directions below)

3. It is recommended that caulk be applied at the mating
seams and surfaces of the plenum, the hood, and the wall.
If the supply plenum is next to a wall, you will also need to
caulk around the surface next to the wall. Caulk the joints
with NSF approved silicone caulk (GE SCS-1009, or its
equivalent). The caulk is not provided.

Installing the Supply Duct Collar to the Plenum

1. Place the duct collar(s) over the opening, fastening with
tack welds at 1 in. to 2 in. intervals, or sheet metal screws
at 3 in. to 6 in. intervals.

VSP - Variable Supply Plenum

SUPPLY PLENUM WEIGHTS

Hood Height 24 in. 24 in. 30 in. 30 in.

Hanging Height 78 in. 84 in. 78 in. 84 in.

ASP 9.5 lbs/ft. 11.7 lbs/ft. 11.7 lbs/ft. 13.9 lbs/ft.

VSP 16.5 lbs/ft. 18.7 lbs/ft. 18.7 lbs/ft. 20.9 lbs/ft.

BSP 42 lbs/ft. 42.2 lbs/ft. 42.2 lbs/ft. 44.4 lbs/ft.

Using the UL Listed Fastener Provided

1. Drill a 9/32 in. hole for the 1/4 in. bolt from the inside of the
supply plenum to inside the hood. Fasteners are to be located
max. 6 in. from the end of the hood with max. spacing
between bolts 36 in.

DO NOT include utility cabinets or fillers when figuring bolt

placement.

DO NOT bolt the supply plenum to a fire/utility cabinet.

2. Push bolt through hole, using the washer and nut.

3. Hand tighten, then use a wrench until fully tightened. Caulk
around bolts from inside of hood as necessary.

12

12

October 2010

TEP

2

W (MODULE WIDTH

)

W

/2

W

/4

W

/4

TEP

1

IF MODULE > 6 ft.

)

4 in. TO 6 in

.

FASTEN WITH SCREWS, OR TACK WELDS EVER

Y

PLACE THE DUCT COLLAR OVER THE OPENING

,

TEP

2

INSTALLATION INSTRUCTIONS FOR THE BACKSUPPLY PLENUM BSP

W (MODULE WIDTH

)

W

/2

W

/2

W

/2

(MODULE WIDTH

)

W

W

/4

W

/4

TEP

1

IF MODULE > 6 ft.

)

IF MODULE < 6 ft.

)

TEP

1

4 in. TO 6 in

.

FASTEN WITH SCREWS, OR TACK WELD

S

Y

PLACE THE DUCT COLLAR OVER THE OPENING

,

TEP

2

Installing the Supply Duct Collar

1. Find the center of the Backsupply Plenum.

2. If the Backsupply Plenum is less than 9 ft. 10 in. wide, cut opening at
the suggested location, centering the opening over the center of the
backsupply Plenum. (see Fig. 10A)

3. If the Backsupply Plenum is greater than 9 ft. 10 in. wide, divide the
width of the backsupply by four. This will give you the center of each
half. Cut openings at the suggested location, centering the duct collar
over the center measurement of each half. (see Fig. 10B)

4. Place the duct collar(s) over the opening, fastening with screws or tack
welds every four to six inches. (see Fig. 11)

Fig. 10A

Fig. 10B

• The4in.highduct 

collar is to be attached
to the backsupply.

Fig. 11

Hanging the Backsupply Plenum

5. Hang the Backsupply Plenum from the ceiling.

(The Backsupply Plenum needs to be mounted 31.25 in. above the floor (based upon a canopy hood that will

be hung at 6 ft. 6 in. above the finished floor. This is measured from the lowest rear edge of the Backsupply
Plenum to the finished floor. Leave 6 to 10 inches of space below the plenum for access to the air diffusers.)

6. Fasten the Backsupply to the wall, going through the lower Backsupply wall. (See Fig. 12)

• These fasteners are to help maintain the location of the Backsupply, and are not intended to hold the weight

of the Backsupply Unit.

• The fasteners should not interfere with the removable air diffusers.

• The 31.25 in. height is based upon the canopy hood hanging height of 78 in. from the finished floor to the

bottom of the hood.

October 2010

13

13

STEP 3

Furnished by Others

0.500 in. Threaded &

0.500 in. Threaded Nuts
(Furnished by Others)

Hanger Bracket Detail

1) Hang Backsupply Modules from the
ceiling (the example shows the module
being supported with threaded rod)

The backsupply is to be 31.25 in. from the
floor. This is measured from the lowest
rear edge of the backsupply module to the
finished floor.

2) Fasten backsupply to wall through the
lower backsupply wall. These fasteners
are to help maintain location of the
backsupply, and are NOT intended to hold
any weight of the unit. Fasteners should
not interfere with the removable air diffuser.

31.25 in.
Critical
Dimension

Fasteners holding the
backsupply to the wall

Hanging the Hood

HANG THE H

OOD

INSTRUCTIONS, THE HOOD MAY BE FASTENED TO THE BACKSUPPLY

.

5. CONNECT REMAINING DUCTWORK FOR THE BACKSUPPLY AND TH

E

HOOD. CAULK IS RECOMMENDED TO BE APPLIED AT THE MATIN

G

4. LIFT THE HOOD; POSITION IT SO THE TOP OF TH

E

HOOD IS LEVEL WITH THE TOP OF THE BACKSUPPLY; AFTE

R

THE HOOD IS HUNG FROM THE CEILING AS PER IT'S INSTALLATI

ON

1. THE HOOD IS TO BE HUNG AS PER THE HOODS INSTALLATI

ON

HOULD BE CONNECTED BEFORE THE HOOD IS HUN

G.

3. DUCTWORK FOR THE BACKSUPPLY; IF IT WILL NOT INTERFERE

,

2. BEFORE THE HOOD IS HUNG THE BACKSUPPLY MUST BE SECURE

D

INSTRUCTIONS AND THE FOLLOWIN

G.

PROPERLY, AS DESCRIBED IN "STEP 3 in

.

TEP

4

STEP 5

Air Diffusers

(A) Insert the air diffusers at an angle from the bottom.

(B) Rotate the diffusers so the forms are downward.

(C) Rest the diffuser on the internal angles.

Canopy Style Hood

Removable Air Diffusers

Before hanging the hood according to the hood
installation instructions, please check the following:

1. Make sure the Backsupply Plenum is properly
secured, as described in steps 5 and 6, page 13.

2. If the ductwork for the Backsupply will not
interfere with the hood installation, it should be
connected now.

3. Any filler panels should be attached to the hood
before the hood installation. See page 16 for
instructions.

4. For Canopy Hoods: Lift the hood, and position
it so the filler panels are resting lightly on the
top outside edges of the Backsupply. The
Backsupply is used to position the hood only,
it is not intended to hold any hood weight. (See
Fig. 13)

5. Connect the remaining ductwork for the
Backsupply and the hood. It is recommended
that caulk be applied at the mating seams and
surfaces of the Backsupply, the hood, and the
wall.

Fig. 12

Air Diffusers

The air diffusers, located at the bottom of the backsupply
(See Fig. 14), will need to be cleaned as often as the
application dictates. Inspect periodically to determine the
cleaning schedule.

1. To clean the air diffusers, unfasten the screws. Remove
the air diffusers from the Backsupply Unit, and wash in
the sink or dishwasher.

2. Insert the air diffusers at an angle from the bottom, and
rotate so the forms are downward. Rest the diffuser on
the internal angles. (See Fig. 15)

3. Refasten with the stainless steel screws.

Return to Page 8.

14

14

Fig. 13

Fig. 14

Fig. 15

October 2010

OSURE

OP

OSURE

S

L

E

.

H

S

ENCLOSURE PANEL INSTALLATION INSTRUCTIONS

Before installing the enclosure panels, make sure the hood is hung in position with all the ductwork attached
and electrical connections completed.

FRONT ENCL

FASTENERS TO WAL
BY OTHER

3/8 IN. DIA

HOL

ND ENCL

HOOD T

PANE

5/16 IN. BOLTS WIT

NUTS AND WASHER

LAMP

Fig. 16

1. Position the end enclosure panels on the hood, and clamp into place with clamps provided or tack weld the
panels into place (see Fig 16).

2. Fasten the end enclosure panels to the wall, method depends on wall construction. (fasteners are not
provided)

If the hood is a double island, bolt the end enclosure panels together. (fasteners are not provided)

3. Position the front enclosure panel(s) on the hood, and bolt to the end enclosure panels with the 5/16 in.
bolts provided in the hardware package.

4. Tack weld or clamp the front enclosure panel(s) to the hood. If clamps are used, they must be positioned
4 inches from the ends, and in the center of the front enclosure panel.

5. To allow for ease of cleaning, caulk the external seams with NSF Approved silicone caulk (GE SCS-1009, or
its equivalent). The caulk is not provided.

6. Installation instructions may not be applicable for concrete ceilings.

Return to Page 9.

October 2010

15

15

OO

G

L

H

S

CK

FILLER PANEL INSTALLATION INSTRUCTIONS

1. Uncrate the hood and
lay it on the floor with
protective material
between the hood and the
floor (See Fig. 8, page 8).

2. Bolt the filler panels
together with 5/16 in. bolts
provided in the hardware
package.

3. Position the filler panels to
the hood back, and tack
weld them into place (see
Fig. 17).

4. To allow for ease of
cleaning, caulk the
external seams with NSF
approved silicone caulk
(GE SCS-1009, or its
equivalent). The caulk is
not provided.

Fig. 17

H

HOOD

HOOD

D

Return to Page 8.

HT FILLER PANE

RI

TACKWELDED TO HOOD BA

5/16 IN. X 3/4 IN. BOLTS WIT
WASHERS & NUT

16

16

October 2010

END SKIRT INSTALLATION INSTRUCTIONS

1. After the hood is hung in position, slide the hemmed form on top of the end skirt onto the end panels of the
hood.

2. Drill a hole in the hood end panel to line up with the hole in the end skirt. Attach the end skirt with a 1/4 in.
bolt and cap nut to the inside of the hood, or tack weld the end skirt to the hood.

3. Position the end skirt against the wall and attach. The method depends on the wall construction. (fasteners
for this are not provided)

4. Caulk the internal joint formed by the end skirt and the hood end panel with NSF approved silicone caulk
(GE SCS-1009 or its equivalent). The caulk is not provided.

5. To allow for ease in cleaning, also caulk all the external seams.

Return to Page 9.

Fig. 18

October 2010

17

17

BACKSPLASH PANEL INSTALLATION INSTRUCTIONS

HOLES SHOULD BE SPACED TO

ADEQUATELY SECURE THE PANEL

TO THE WALL STUDS (HOLE SPACING

AND FASTENERS PROVIDED BY OT HERS)

BACKSPLASH PANEL

HOOD END PANEL

HOOD FRONT PANEL

SLIDE FLANGE
BEHIND BACK
OF THE HOOD

SECTION VIEW
OF BACKSPLASH
PANEL OVERLAP

1. After the hood is
hung in position, slide
the flat flange of the
backsplash panel
behind the back of the
hood.

Note: If the backsplash

panel length is greater
than 46 in., it will be
shipped in multiple
pieces.

2. After the backsplash
panel has been
positioned, drill holes
in the panel and fasten
to the wall. (fasteners
provided by others)

Note: The holes

should be spaced to
adequately secure the
panel to the wall.

3. Caulk the joints
between the hood and
the backsplash panel
with NSF approved
silicone caulk (GE
SCS-1009, or its
equivalent). The caulk
is not provided.

Fig. 19

4. Caulk the joint
between the
backsplash panels
when multiple panels
are required, with NSF
approved silicone
caulk (GE SCS-1009,
or its equivalent). The
caulk is not provided.

Return to page 9

18

18

October 2010

FLAT BACKSPLASH PANEL

MATERIAL GA.

(S) STAINLESS

WALL

HEIGHT

LENGTH

<=48
>48<=94
>94<=141

>141<=188

>188<=235

QTY
1
2
3
4
5

LENGTH

NOTE: PANELS UP TO 48 INCHES WIDE SHIPPED IN 1 PIECE, OVER 48 INCHES IN MULT IPLE PIECES.

1.000

INSULATED BACKSPLASH PANEL

MATERIAL GA.

(S) STAINLESS

INSULATION

1 IN.

WALL

HEIGHT

October 2010

LENGTH

<=46

>46<=91

>91<=136

>136<=181

>181<=226

QTY
1
2
3
4
5

NOTE: PANELS UP TO 46 INCHES WIDE SHIPPED IN 1 PIECE,
OVER 46 INCHES IN MULTIPLE PIECES.

LENGTH

19

19

DUCT COLLAR INSTALLATION INSTRUCTIONS

O

NTINUOUS LIQUID TIGHT WEL

D TO HOO

D.

EXHAUST

DUCT CONNECTION IS TO B

E

CONNECTION

EXHAUST

DUC

T

1" TO 2" TACKS OR SHEET METAL SCREWS AT 3" TO
6" SPACING TO HOO

D.

S

UPPLY

DUCT CONNECTION TO BE TACK WELDED WITH

C

ONNECTIO

N

S

UPPLY

DUC

T

PPL

Y

PPL

Y

HAMBE

R

HOOD

INSULATE

D

PPLY PLEN

UM

EXHA

UST

APTURE

FOR XB, XW, XK, XX, & XG SERIES HOODS

1. The exhaust duct
connection needs to be
located within 48 in. from
the center of the hood
length to the center of
the duct connection.
(see Fig. 20A)

2. The exhaust duct
connection is to be a
continuous liquid tight
weld. Weld with a non-

ferrous filler wire,
such as silicon bronze
or stainless steel
filler wire. Protect all
stainless steel areas
from weld splatter.

3. The supply duct
connection is tack
welded at 1 in. to 2 in.
intervals, or sheet metal
screws at 3 in. to 6 in.
spacing to the hood.
(see Fig. 20B)

8.00

Top View of the Hood

Hangar Bracket

Exhaust Plenum

Supply Plenum

Hood Length

Duct Cut Out Area

Front of Hood

3.00

10.00

Hood Width

16.00

3.00

8.00

Fig. 20A

4. The deflector is centered
under the supply duct
collar. (see Fig. 20C)

5. For hoods that are
insulated, the edges of
the insulation need to
be taped after the hole
is cut, (the insulation
tape is to be provided by
others).

6. On combination hoods,
make sure the fire
damper is located over
the internal supply
chamber. (see Fig. 20D)

Return to page 9.

Fig. 20B

Fig. 20C

Note: UL listed hood

DEFLECTOR TO BE PLACED CENTERED

UNDER THE SUPPLY DUCT COLLAR

Fig. 20D

assembly to be used
only with Accurex
Fan Corp. labeled
subassembly for
exhaust hood without
exhaust damper part
Number DC.

20

20

October 2010

Plumbing

Mounting the Control Station:

The control station can be either surface mounted or recessed mounted within the wall. For recessed mounts,
provisions must also be made for piping and electrical wiring within the wall. Holes are provided in the top and
bottom of the control station for piping and wiring. Use four holes provided in the back of the cabinet to attach it
to the wall.

A trim ring is available as an option for recessed mounting of the panels.

Plumbing:

All plumbing must be done according to all applicable national and local building codes.

1) Waterwash Engineering Specifications:

Control Panel

Size

1 3/4 inch 0 ft. - 10 ft. 2.5 gal.

2 1 inch 10 ft 1in. - 20 ft. 0 in. 2.5 gal.

Plumbing Size Hood Length

Detergent Tank

Capacity

Hot Water Requirements

Water Pressure - 40 to 60 psi
Water Temperature - 140°F to 180°F
Average Water Consumption - 1.25 GPM per lineal foot of hood (2.5 GPM for double islands).

Hot Water Flow

Hood Number Water Flow in GPM

Length of Nozzles @40psi @60 psi

4 ft. 0 in. 12 4.8 6.0
4 ft. 6 in. 14 5.6 7.0
5 ft. 6 in. 16 6.4 8.0
6 ft. 0 in. 18 7.2 9.0
7 ft. 0 in. 20 8.0 10.0
7 ft. 6 in. 22 8.8 11.0
8 ft. 6 in. 24 9.6 12.0
9 ft. 0 in. 26 10.4 13.0
10 ft. 0 in. 28 11.2 14.0
10 ft. 6 in. 30 12.0 15.0
11 ft. 6 in. 32 12.8 16.0
12 ft. 0 in. 34 13.6 17.0
13 ft. 0 in. 36 14.4 18.0
13 ft. 6 in. 38 15.2 19.0
14 ft. 6 in. 40 16.0 20.0
15 ft. 0 in. 42 16.8 21.0
16 ft. 0 in. 44 17.6 22.0

NOTES: For hood lengths not listed above, use the data for the next smaller hood length listed.

For hoods that are washed together, or for groups of sequenced hoods, determine the number of gallons
per minute required by each hood from the table above and add those values for the total gallons per minute
required for the group of hoods.

October 2010

21

21

Plumbing & Electrical

2) Optional Continuous Cold Water Mist Engineering Specifications:

Minimum

Control Panel

Pipe Size

3/4 in. 50 ft. or less 1/2 in. 4 gpm 3/8 in.
3/4 in. 100 ft. or less 3/4 in. 8 gpm 3/8 in.

Cold Water Requirements
Water Supply 30-60 psi
Average water consumption 0.1 gpm per linear foot of hood
Set pressure reducing valve to 25 psi on the gauge in the cabinet when running.

3) Water Supply to Cabinet:

Connect hot water supply to waterwash pipe fitting at bottom of control station. Connect cold water supply
to optional continuous cold water mist pipe fitting at bottom of control station. The water requirements to the
cabinet are detailed in the Engineering Specifications.

Optional Reduced Pressure Backflow Preventer:

Water solenoid valves and detergent line are factory-mounted inside the control panel (See Fig. 5, 6 & 7, page

7). The reduced pressure backflow preventer and strainer (provided) must be field piped in the supply line before

the control panel. The backflow preventer relief valve must also be piped to a drain.

Total Hood

Length

Cabinet to

Hood Pipe Size

by others

Maximum

Water Usage

Hood

Pipe Size

4) Control Cabinet to Hood Plumbing:

The waterwash plumbing requires 3/4 in. or 1 in. pipe (by others) depending on the length of hood in each
washing sequence. The optional continuous cold water mist plumbing requires 1/2 in. to 3/4 in. pipe (by others)
depending on the total length of hood. Only reduce to 3/8 in. at the hood connection.

See the Engineer Specifications for information on the pipe size required.

For Systems with a Vacuum Breaker:

Piping from control station to hood includes a detergent line and a vacuum breaker. The vacuum breaker must
be installed at the highest point in the system (and a minimum of 6 in. above the hood water supply line). The
detergent line joins the supply line downstream from the vacuum breaker as shown in Fig. 2, 3 & 4, page 7.
Where optional solenoid valves are used in systems with multiple hood sequence washing, additional piping
must be installed downstream from the vacuum breaker. Hot water/detergent supply pipe connects to hood pip­ing at top rear corner of hood.

5) Drain Connection:

Install hood drain pipe at bottom rear corner of hood as shown in Fig. 1. A 2 inch NPT female fitting is provided.
A grease trap is recommended in the drain to avoid clogging the sanitary sewer. If a RPBP is shipped with the
control panel, an air gap assembly may be required and will need to be plumbed to a sanitary sewer. See draw­ing on page 42 of the drawing diagram section of this manual.

22

22

October 2010

Electrical

B. Electrical Wiring:

All wiring must be done according to NEC (National Electrical Code NFPA #70) and local building codes.
A terminal block is provided in the electrical compartment of the waterwash control station for all wiring
connections. (See Figs. 21 & 22 on page 24. See also separate wiring diagram.)

NOTE: The waterwash control station must be wired to the exhaust fan controls and optionally

to the hood’s fire protection system.

Wiring to waterwash control station is 115 VAC, 20 AMP separately fused service.

Wiring from waterwash control station to fan control center is configured as a normally-open dry contact.
However, it can be configured by others to provide 115 VAC, 1 AMP (max) control power to the fan control
center. If the fans are controlled by a building management system, it may be necessary to reprogram the
control panels PLC to eliminate having to push the start fan & start wash buttons to initiate a wash cycle. A
24-hour timer is then required to initiate the wash cycle.

Wire hood light switch to junction box on top of hood.

Wire waterwash control station terminals to fire suppression system microswitch in the Fire Suppression Control
Cabinet (a normally-closed dry contact switch). If this switch or jumper is not installed, the waterwash system
will operate in fire mode continuously. (This is not required but will provide added protection during a fire and
the control panel is shipped with a jumper between terminals 5 & 6 which must be removed when connecting to
the fire system micro-switch)

For optional sequence washing of multiple hoods, use one of the following:
A) Controls with vacuum breakers (See Fig. 2, 3 & 4, page 7)
B) Controls with backflow preventers with waterwash only (See Fig. 5, page 7)
C) Controls with optional continuous cold water mist and backflow preventer (See Fig. 6 & 7, page 7)

October 2010

23

23

Electrical

TERMINAL STRIP IN GREENHECK MODEL

KSU

UPPLSUPPLYFAN CONTROL CENTER

Electrical Service

ELECTRICAL SER VICE

FOR WA TER

for Waterwash

CONTROL

Control Station

120/60/1

120/60/1

L1 NG

L1 N G

12 345678 9101112131514

Terminal Strip in Accurex

MUA Control Center

R

3

RG

N.C. FIRE CONT AC T

N.C. Fire Contact

N.C. FIRE SYSTEM SWITC H

N.C. Fire System Contact

NEUTRA

NEUTRA

Neutral

Neutral

Fig. 21 Typical Field Wiring for
Waterwash Control Station to
Accurex MUA Control Center

SEE WATER W ASH CONTROL

See Waterwash Control Station
Wiring Diagram for Exact Layout

WIRING DIAGRAM FOR EXACT LAYOUT

120/60/1 to Hood Lights

120/60/1 TO HOOD LIGHTS

SEQUENCE

Sequence

SEQUENCE

Sequence

SEQUENCE

Sequence

SEQUENCE

Sequence

SEQUENCE

Sequence

120/60/1 to Optional
Remote Solenoid

120/60/1 TO OPTIONAL

Valves for Sequence

REMOTE

Washing

VA LV ES FO R

WA SHIN

Motor Circuit Control Voltage

MOTOR CIRCUIT CONTROL

L1 N G

N.C Fire

N.C. FIRE

CONTACT

Contact

Electrical Service

ELECTRICAL SERVICE

for Waterwash

FOR WATER

CONTROL

Control Station

120/60/1

120/60/1

L1

L1 N G

NG

Fig. 22 Typical Field Wiring
for Waterwash Control

GNL1

SUPPLY POWER FOR FAN

Supply Power for Fan Motors

Station to Field Furnished Fan
Controls

L2

L1

L3

L1L2L3

OL

T3

T1

T2

T1

T3

T2

Supply

Motor

N.C. FIRE SYSTEM SWITCH

N.C. Fire System Contact

NEUTRA

NEUTRA

Neutral

Neutral

O.L.O.L.

L2

L3

L1

L1

L2 L3

All Components and

ALL COMPONENTS

WIRING BY OTHERS

Wiring By Others

T3

T1

T2

T1OLT2

T3

Exhaust

Motor

SEE WATER WASH CONTROL

See Waterwash Control Station

WIRING DIAGRAM FOR EXACT LAYOUT

Wiring Diagram for Exact Layout

120/60/1 to Hood Lights

120/60/1 TO HOOD LIGHTS

Sequence

SEQUENCE

SEQUENCE

Sequence

SEQUENCE

Sequence

SEQUENCE

Sequence

SEQUENCE

Sequence

120/60/1 to Optional
Remote Solenoid

120/60/1 TO OPTIONAL

Valves for Sequence

REMOTE

VALVES FOR

Washing

WASHIN

24

24

12 345678910 11 12 13 1514

Terminal Strip in Accurex Waterwash Control Station

TERMINAL STRIP IN GREENHECK WATER WASH CONTROL PANEL

October 2010

Instructions for programming the
Waterwash Control Panel (WWCP)
24-hour or 7-day timer

If your waterwash control panel included a timer, either 24-hour or 7-day, it will need to be
programmed prior to kitchen start-up. The timer was shipped with a 3-year battery installed
and was tested before leaving the factory.

The function of the timer is to start the hood wash sequence after all cooking and dish
washing operations have ended for the day, so that all available hot water may be used in
washing the hood baffles.

The daily sequence of operations is:

1. Press the “Start Fan” button at the beginning of the day to start the fans.

2. Press the “Stop Fan / Start Wash” button at the end of the day to stop the fans.
A. This will initiate the wash timing delay
B. To wash the hood immediately, press the “Stop Fan / Start Wash” button a second time.

3. After all wash sequences have been completed, the WWCP will reset for the next day’s operation.

Programming Instructions:

1. Remove the clear plastic cover over the 6 buttons by gently lifting out at the top.

2. Press the “MODE” button until “CLK” is displayed in the upper left corner.

3. Press the “DAY” button until the correct day is shown at the bottom of the display.

4. Press the “H+” and “M+” buttons to set the correct time. “AM” or “PM” is shown at the left side of the
display.

5. Press the “MODE” button once. “PRG” should be displayed.

A. On the right side of the screen should be a “1” and “ON”. This is the first program.
There are 6 available to use. Normally only one is used for 24-hour timing and the other 5 can be used

for 7-day timing.

B. With 24 hour timing, the wash cycle will start the same time everyday.

6. Press the “DAY” button until the correct day or days appear at the bottom of the display. Use “MO TU WE
TH FR SA SU” for 24 hour timing.

7. Press the “H+” and “M+” buttons to set the time the wash is to start.

8. Press the “ON/OFF EVENT” button once. “OFF” and “1” should be on the right of the display.

9. Set the off time to be 5 minutes after the on time for this program.

10. If using as a 7-day timer, use the “ON/OFF EVENT” button and repeat steps 6-9 to set the other programs
as needed.

11. Press the “MODE” button once. “AUTO” should be displayed.

12. Replace the clear plastic cover over the buttons.

13. The hood may also be manually washed any time the fans are off by pressing the clear plastic button
cover. “ON” should appear on the right side of the display.

October 2010

25

25

Waterwash Timing Adjustment for PLCs:
(PU214 & CPU224)

SEQUENCE OF WASH OPERATIONS

15 SEC. COLD WATER PURGE (OPTIONAL 30 SEC.)
4 MIN. WASH (OPTIONAL 0 TO 10 MIN.)
30 SEC. DETERGENT PURGE (OPTIONAL 1 MIN.)

Fig. 23A

15 MIN. SEQUENCE DELAY (OPT. 0 TO 45 MIN.)
1 MIN. DRAIN DOWN (OPTIONAL 10 MIN.)
1 MIN. DRY (FANS ON) (OPTIONAL 10 MIN.)

SIEMENS

SIMATIC
S7-200

SF

RUN

STOP

OPTIONAL FIELD INSTALLED
JUMPERS FOR ADDITIONAL TIME
24V FROM OUTPUT 0.2
OR OTHER ALWAYS "HOT"
24V ELECTRICAL SOURCE

MAIN

FANS

SEQ. 1

SEQ. 2

FAN ON

OFF / WASH

FIRE

TIMER

2L*0.30.20.10.01L

0.4

SEQ. 3

SEQ. 5

SEQ. 4

PROGRAMMABLE

CONTROLLER

+15 SEC. COLD

+30 SEC. DET.

+9 MIN. DRIP

+9 MIN. DRY

2M

4. ADDING 120V JUMPERS WILL:

5. RECONNECT POWER.

L1N1.11.00.73L*0.60.5

OUTPUTS

CPU 224

FIRE

AC/DC/RLY

PUMP

SUPPLY

RUN

TERM

STOP

10

SEQ.

WASH

DELAY

TIME

INPUTS

L+M1.51.41.31.21.11.00.70.60.50.40.30.20.10.01M

TERM. 0.4 - ADD 15 SECONDS TO COLD WATER PURGE
TERM. 0.5 - ADD 30 SECONDS TO DETERGENT PURGE
TERM. 0.6 - ADD 9 MINUTES TO DRAIN DOWN TIME
TERM. 0.7 - ADD 9 MINUTES TO FAN ON DRY TIME

1. DISCONNECT POWER BEFORE SERVICING.

WASH TIME

4 MIN.

0

POTENTIOMETERS:

2. WITH A SMALL SCREDRIVER
AJDUST TO THE DESIRED SETTING.
DO NOT FORCE SCREW PAST ITS STOPS.

3. NEW SETTING WILL TAKE EFFECT
WHEN POWER IS REAPPLIED.

7 MIN.

10 MIN.

SEQ. DELAY

0

20 MIN.

60 MIN.

40 MIN.

DETERGENT PUMP:

For proper operation of the detergent pump and wash system, hot water pressure must be between 40 PSI
(min.) and 60 PSI (max.). The water temperature range is 140°F to 180°F.

Water pressure, water temperature, grease accumulation, wash cycle length, wash cycle frequency, and the
type and amount of detergent used can influence cleaning effectiveness. In very heavy cooking operations,
additional washes may be necessary. The wash time can also be increased to a maximum of 10 minutes; the
wash time is factory set at four minutes. Consult Fig. 23A to change the wash time. If this is not effective,
manual cleaning may be necessary (hand scrubbing, steam cleaning or pressure washing).

Adjusting Detergent Pump Output Rate

Adjustment of the detergent flow may be necessary. Pump must be OFF.
Use the following formula to determine proper pump setting: (Adjust pump setting as needed for proper
cleaning.)

0.3 oz./min. x Hood Length = Pump Setting The minimum pump setting is #2.

Pump

Setting

0 1 2 3 4 5 6

Oz./min. 0 1.35 2.7 4.05 5.4 6.75 8.1

Record Original Pump Setting at Start-up for Future Reference

Pump Setting = __________________

1. Knob

6

2. Wing
Nut

5

4

3

2

1

0

5. Screw

Adjust the Detergent Injectors Output:

3. Pointer

4. Yolk

To calculate the number of washes a full detergent
tank will deliver for a specific application, use these
formulas:

1) Pump setting (oz. per min.) x Wash Length (4.0 min. std.)
= Oz. per wash

2) 320 oz. Tank Capacity = Number of Washes per Tank
Oz. per Wash

26

26

1) With the pump and detergent injector off
hold adjustment knob(1) and loosen
wing nut.

2) Turn adjustment knob until the pointer
(3) indicates the desired setting. Six is
the maximum; zero is the minimum.

3) While still holding adjustment knob,
tighten wing nut.

Fig. 23B

October 2010

Detergent Requirements

The detergent brand SC-5 (by 2010 Products) is recommended by Accurex for use in the waterwash system.
For normal use in Accurex waterwash hood systems, use SC-5 full strength or as suggested by supplier. This
product is biodegradable, non-caustic, and safe for kitchen staff to use. It can also be diluted with one part SC-5
to one part water for cleaning hood exterior surfaces. To eliminate grease from drains, TDW Bio-Enzyme Grease
Treatment is recommended. This product contains no harsh chemicals, removing grease, fats, and oils with
bacteria and enzymes in a detergent base. Both SC-5 and TDW are manufactured by 2010 Products, Inc., Food
Service Division, Salem, Oregon 97303. For details and ordering information, call 800-286-2010.

Preventive Maintenance

The following practices will prolong the life of the detergent pump:

 •Avoidspillingdetergentontheexteriorofthepump.
 •Cleanthedetergenttankatleasteverysixmonths.
 •Cleanthedetergentlinestraineratleasteverysixmonths.
  •Checktightnessofallfittingsperiodically.
  •Keepdetergenttankfilled.

The detergent pump motor has sealed bearings which do not require lubrication.

INITIAL SYSTEM START UP:

1. Check electrical power (see wiring diagram page 24, Figs. 21 & 22)

Correct supply voltage
Proper connections to fire suppression system
Proper connections to fan control center
Proper connections to optional remote solenoid valves

2. Adjust the detergent injector’s output (See page 26, Fig 23B)

3. Add detergent to the detergent tank in the cabinet (See page 7, Fig. 4)

4. Flush the piping:

Remove last nozzle from the waterwash piping and from the optional continuous cold water
mist piping in the hood. With the cabinet doors closed press the “Start Fan” button. After
sufficient time press the “Stop Fan/Start Wash” button twice. After sufficient time open the
cabinet doors and replace the nozzles. Clean all strainers in water lines.

5. Close the cabinet doors and press the “Start Fan” button

- Check exhaust and supply air volumes with a pitot traverse or equivalent method
(see page 32 for equivalent method)

- Verify optional continuous cold water mist is spraying

- Set the pressure reducing valve on the optional continuous cold water mist to 25 psi on the
gauge provided.

6. Press the “Stop Fan/Start Wash” button. (Press twice if there is a 24- hour timer)

- Verify the waterwash sequence of operation (page 28, Fig. 24).

- During the wash cycle verify the flow of water. Verify the pressure and temperature on the gauge
provided meets the Engineering Specifications (see page 21).

- During detergent pump cycle verify that it is pumping.

Start up checklist available in the appendix.

DAILY OPERATION OF THE WATERWASH HOOD:

Pressing the Start Fan switch will start the exhaust fans, supply fans, and optional continuous cold water mist.
This can be done at any time, including during wash cycle operations. The only exception is during fire mode.

(See Fig 24).
Pressing the Stop Fan/Start Wash switch shuts down the fans, shuts down the optional continuous cold water

mist, and starts the wash cycle. If the system has a 24 hour timer, the wash cycle will begin at the set time. To
start the wash cycle independently of the timer, press the Start Fan/Start Wash switch a second time. When the
wash is completed, the system will then automatically reset itself.

If the fans are controlled by a building management system (BMS), the steps above still apply unless a special
program is requested to by-pass having to initiate the wash cycle by pushing the stop fan/start wash button.

October 2010

27

27

Fig. 24

YES

Do you

Want to

Bypass the

24 Hour Timer?

START

Push Start Fan Button

Exhaust Fan, Supply Fan and Optional

Continuous Cold Water Mist will start

for the normal Cooking Operation.

Start Fan Light ON

Push Stop Fans/Start Wash Button

Exhaust Fan, Supply Fan and Optional

Continuous Cold Water Mist will stop

and allow the wash cycle to initiate.

Start Fan Light OFF

Sequence of Operation

Exhaust Plenum Drip Dry (1 min.)

Allows excess water

to drain from hood.

Stop Fan/Start Wash Light OFF

Exhaust, Supply Fans and Optional

Continuous Cold Water Mist Activate

(1 min.) to exhaust heat and steam

built up in hood. Start Fan Light ON

Dry

Cycle

NO

24 Hour Timer

The Wash Cycle Will Begin at the

Preset Time.

To Bypass the 24 Hour Timer

Press the Stop Fan/Start Wash

Button a Second Time.

Sequence Wash Delay To Allow

Water Heater to Regenerate.

Factory set at 15 Min.

Consult page 26 to Change Delay.

Wash

Cycle

Does the

YES

system have

the 24 Hour Timer

Option?

NO

Cold Water Purge (15 sec.)

Water Solenoid Valve Opens o Allow

Cold Water to be Purged from the

Hot Water line.

Stop Fan/Start Wash Light ON.

Detergent Pump Activates

Detergent will be injected into the

Water solenoid valve remains open

pump stops to allow detergent to

water line

Detergent Pump Stops

Pump run time is factory set

at 4 Minutes. Consult page 26

to change pump run time.

Water Solenoid Valve Closes

for 30 sec. after the detergent

be purged from the line.

Exhaust, Supply Fans and Optional

Continuous Cold Water Mist shut

Fans Stop

down. Start Fan Light OFF.

END

Override

Hoods Automatic Fire Suppression System Activates

N.C. Contacts Open -One to activate waterwash system

fire mode, the other to disconnect the supply fan

Waterwash System Enters Fire Mode

Waterwash and Continuous Cold Water Mist Spray Water in

Hood Plenum. The Fan Circuit is activated. All Lights ON

Are Manual

Shut-off

valves going

to be used?

NO

Fire Mode

YES

Manually Shut-off Water

with Hand Valves

Water Flow Stops

28

28

NO

Is this a single
hood or the last
hood to wash in

a sequence wash

system?

YES

Reset Hoods Automatic Fire

Suppression System

N.C. Contacts Close

Open All Waterwash Hand

Valves

Return to Normal

Reset Hoods Automatic Fire

Suppression System

N.C. Contacts Close

October 2010

Accurex Waterwash Sequence of Operations

Siemens PLC S7-200, CPU 214 & CPU 224

The intent of the waterwash control panel(WWCP) is to control the operation of the fans and will start the wash
cycle upon fan shutdown. If hooked up properly, the fans will be off during wash cycles. If the exhaust fan is
being controlled by something other than the WWCP, this panel will still function. To start the wash cycle, you
must still press the “Start Fan” and “Stop Fan/Start Wash” buttons. Washing will either start immediately or
when the 24 hour timer is tripped. A fan interlock should be installed by others to keep the exhaust fan(s) from
sucking water up into the duct(s).

1. Off Mode - At the beginning of a day the following PLC lights will be lit:
Run - Should always be on
I 0.2 - Signal from fire system. Loss of this signal will initiate “FIRE” mode.
I 0.3 - Signal from wash timer (only on at time set on timer). If no timer, this will always be lit.

2. Cooking Mode - Press “Start Fan” button. The following PLC lights will be lit:
Run
I 0.2
I 0.3 - Signal from wash timer (only on at time set on timer). If no timer, this will always be lit.
Q 0.0 - Fans. Combined switching. This will control both exhaust and supply fans. Fan control relay

should be energized. Fans should be on. Optional “Cold Water Spray” solenoid should be
energized and water spraying along entire length of exhaust plenum.

Q 0.7 - Supply fan, not wired from factory. Use this if separate switching is required. Supply fan will

shut down or turn off during a fire.

3. Stop Mode - Press “Stop Fan, Start Wash” button. The fans and optional cold water spray will stop. If there
is a 24 hour or 7 day timer, the wash cycle will start at the time set on the timer. If there is no timer, the wash
cycle starts immediately. To bypass the timer and start the wash cycle immediately, you can either press the
“Start Wash” button a second time or manually trip the timer. The following PLC lights will be lit if not in wash
mode:
Run
I 0.2
I 0.3 - Signal from wash timer (only on at time set on timer). If no timer, this will always be lit.

4. Wash Mode - Sequence of Operations:
15 seconds cold water purge from piping. Detergent requires hot water.
(Optional 30 seconds)
4 minutes wash with detergent. (Optional 0 – 10 minutes)

30 seconds detergent purge to remove detergent from piping.
(Optional 1 minute)

15 minutes sequence delay to allow water heater to recover.
(Optional 0 – 45 minutes)
Repeat the above for each sequence until the last sequence is completed.
1 minute drain down to remove the majority of water from hood.
(Optional 10 minutes)
1 minute fans on to remove steam and moisture from hood.
(Optional 10 minutes)
PLC resets itself for the next days’ operation.

October 2010

29

29

The “Start Fan” and “Stop Fan / Start Wash” buttons must be pushed everyday for PLC to be reset.

Each sequence can wash up to the following combined hood lengths.
10 feet with 3Ú4 in. piping,
20 feet with 1 in. piping,
30 feet with 11Ú4 in. piping and
45 feet with 11Ú2 in. piping.

The following PLC lights will be lit during wash mode:
Run
I 0.2
I 0.3 - Signal from wash timer (only on at time set on timer). If no timer, this will always be lit.
Q 0.1 - main wash solenoid valve stays on for entire wash sequence
Q 0.2 thru Q 0.6 – wash sequence solenoid valves
Q 1.0 - detergent pump on during each wash sequence
I 1.5 - last sequence indicator on during last sequence (CPU 214 only)
Q 0.0 & Q 0.7 - fans on at end of last sequence

Water requirements:
Water temperature – 140 to 180 degrees Fahrenheit
Water pressure – 40 to 60 PSI
Average water usage – 1.1 GPM per linear foot of hood (@ 40 PSI)

Detergent requirements: SC-5 from 2010 Products or X-701 from ZEP manufacturing.

5. Fire Mode. Exhaust fan should be on. Supply fan should be off. Water should be spraying in each exhaust
plenum. The following PLC lights will be lit:
Run
I 1.5 - last sequence indicator (CPU 214 only)
I 0.3 - Signal from wash timer (only on at time set on timer). If no timer, this will always be lit.
Q 0.0 - fans on
Q 0.1 - main solenoid valve on
Q 0.2 - sequence 1 solenoid valve on
Q 0.3 - sequence 2 solenoid valve on
Q 0.0 - sequence 3 solenoid valve on
Q 0.5 - sequence 4 solenoid valve on
Q 0.6 - sequence 5 solenoid valve on
Q 1.0 - detergent pump on
Q 1.1 - fire mode light on

30

30

October 2010

BALANCING THE KITCHEN EXHAUST SYSTEM

A. To determine the proper dining room air balance:

1. Refer to engineering drawings to determine total exhaust CFM from dining areas. (Exhaust fans, heating
and air conditioning units, restrooms, etc.)

2. Determine the total CFM of make-up air supplied to dining area.

3. Subtract #1 from #2 above. If the result is a negative number, a negative pressure is present in the dining
area. In this case, kitchen exhaust odors could be drawn from the kitchen to the dining area. Therefore,
exhaust or supply air should be adjusted to provide a slight positive pressure in the dining area.

B. To determine proper kitchen air balance:

1. Refer to engineering drawings to determine total exhaust from the kitchen area. (Exhaust hoods,
dishwasher hoods, etc.)

2. Determine total CFM of make-up air supplied to kitchen area. (Make-up air hoods, heating and air
conditioning units, etc.)

3. Subtract #1 from #2 above. The result should be a negative number. If the result is a positive number, a
positive pressure is present in the kitchen area. Kitchen odors could be forced into the dining area. Also,
a positively balanced kitchen area can adversely affect the performance of the exhaust hood.

Caution: According to NFPA 96, Ch. 8-3 Replacement Air : Replacement air quantity shall be adequate to prevent
negative pressures in the commercial cooking areas from exceeding 4.98kPa (.02 in. water column).

October 2010

31

31

Measuring Hood Exhaust Volume:

A digital 2-3/4 in. rotating vane anemometer can be used to measure exhaust CFM when the more accurate
pilot traverse is not available. Accuracy of the rotating vane anamometer has been tested at + 15%.

Measuring Velocity and Calculating Volume

1. Turn off all cooking equipment and hood supply fan (if applicable).

2. Remove the deflector panel on short circuit hoods.

3. Place the anemometer head in the hood exhaust airstream as shown in Fig. 25. It must be
placed in the slot as close to the back wall of the hood as possible and at a 90° angle to it.

4. Take measurements at 8 in. intervals along the entire length of the hood.

5. Calculate the average slot velocity.

6. Calculate the CFM per lineal foot by dividing the average velocity by a conversion factor of 3.9.

7. Calculate the hood’s exhaust volume by multiplying the CFM per lineal foot by the length of the hood.

Example:

1. Measured slot velocities in FPM for a hood 4 ft.-0 in.

920 937 924 935 927 925

Fig. 25

Exhaust
Airflow

Digital Rotating
Vane Anemometer

2. Average slot velocity = (Sum of velocity readings)
(Number of readings)

= 920 + 937 + 924 + 935 + 927 + 925 = 5568 = 928 FPM
6 6

3. CFM per lineal foot = Average velocity in FPM

3.9

= 928 = 238 CFM/lineal foot

3.9

4. Hood exhaust volume = (CFM/lineal foot) x (hood length)

= 238 x 4 = 952 CFM

32

32

October 2010

Supply (If Applicable):

Example for Perforated Face Supply

1. Hood set up

If the make-up air unit has a temperature control, it should be used to keep the supply air a the desired room

discharge air temperature.

2. Measure Velocities

Divide the perforated face panel into a grid of equal areas, each approximately 4 in. square.

Measure the velocity at the center of each grid area. A digital 2 3/4 in. rotating vane anemometer or

equivalent is suggested. The center of the anemometer should be held tight to the face of the panel, and
parallel to the filter. Both squareness and distance are important for accuracy. Calculate the average
velocity of the panel.

3. Measure the length, height, and width of the perforated face panel.

4. Calculate the perforated face panel volume in CFM by using the following formula:

Volume = Avg. Velocity * Length (in.) * Height (in.) * .005

5. Calculate the system’s volume by repeating the process for the remaining panels and adding the individual
panel volumes together.

Example: GWFW Hood with (3) 28 in. Perforated Panels

260 250 255 260 250 255 265

• MeasuredvelocitiesinFPMforoneperforatedpanel

• AverageVelocity= Sum of Velocity Readings

Number of Readings

= 260+250+ ... +290+295 = 270.7 FPM
28

• Measure = 28in.longperforatedpanelsx16in.high

Length and Height

• Volumefor = 0.005x(AverageVelocity) x(Length)x(Height)

one panel = 0.005 x 270.7 x 28 x 16 in. = 606.4 CFM

• TotalSystem = (Panel1Volume) +(Panel2Volume) + (Panel3Volume)

Volume = 606.4 + 614.3 + 593.8 = 1814.5 CFM

270 275 270 280 265 265 270

290 285 280 280 275 290 295

285 275 280 260 270 265 260

October 2010

33

33

TESTING HOOD AIR VOLUME

Short Circuit Hoods

Supply

All cooking equipment should be off. The hood exhaust
should also be off.

1. Measuring Velocities

 • Velocitymeasurementsshouldbemadewith 

a digital 2-3/4 in. rotating vane anemometer
or its equivalent.

 • Onevelocitymeasurementshouldbetaken 

for every 8 in. of short circuit opening length,
starting tight against one edge of the
opening, and finishing tight against the other
edge. The anemometer should be placed at
the bottom edge of the opening, flush with
the bottom lip as shown in Fig. 26. Both
squareness and placement are important for
accuracy.

2. Calculate the average slot velocity.

3. Calculate the CFM per linear foot by dividing the
average velocity by a conversion factor of 5.52.

Fig. 26

4. Calculate the hoods exhaust volume by
multiplying the CFM per linear foot by the total
hood length.

Example: 4 ft. short circuit hood (36 in. short circuit opening).

1. Number of Readings = 36 in. / 8 in. => 6 readings

2. Average Slot Velocity = (Sum of Velocity Readings)

(Number of Readings)
= 786 + 900 + 1126 + 1048 + 1111 + 1115 = 6086 = 1014 FPM
6 6
3 . CFM per Linear Foot = Average Slot Velocity in FPM = 1014 = 184 CFM / Linear Foot

5.52 5.52

4. Hood Supply Volume = (CFM/Linear Foot) x (Total Hood Length in Feet)

= 184 x 4 = 736 CFM

34

34

October 2010

Field Wiring for the Ansul or Amerex Snap-Action Switch

Option A

Relay Part NO. 14702

* K1a and K1b are N.O. when K1 is de-energized

Manual Reset Relay
Part NO. 14702

K1*

N.O.

K1a

K1b

N.O.

Push Button

Switch

Gas Valve
See Note 3

1

2

3

5

6

7

8

L1

110V/60HZ

Black
Red

Brown

L2

Snap-Action Switch
Part NO. 423878

Option B

Relay Part NO. 426151

Ansul Snap-Action Switch
(switch contacts shown with Ansul
Automan in the cocked position)

Snap-Action Switch
Part NO. 423878

Black
Red

Brown

L2 Neutral

L1 Hot

110 VAC/60HZ

5

4

3

2

1

GND

Screw

Power
Indicator

Reset

A

B

Relay Coil

Manual Reset Relay
(Part NO. 426151)

Electrical Rating
1/3 HP, 10 AMP, 120 VAC
1/2 HP, 10 AMP, 240 VAC
13 AMP, 28 VDC

Gas Valve
See Note 3

6
9
3

4
7

1

2 Snap-Action Switches Provided by Greenheck may be

wired as shown.

4 Typical Examples Shown

Power to cooking
equipment

Shunt Trip Breaker

120 VAC

N

Input

NO

NC

Electric gas valve - If reset relay is used
see option A or B at right.
Mechanical gas shut off valve does not
require electrical connection.

NO

NC

NO

Input

NC

Voltage Free
Contacts for
Building Alarm(s)

Power to
Fan(s)

Fan
Starter

Terminal strip in
Waterwash Control Panel

NO

NC

3

4

5

6

NO

NC

120 VAC
N

Input

Power to
fan(s)

Fan Starter

Manual Switch

If prohibited by local codes, do not shut down
exhaust fans with this method of wiring.

Note:

1. _________________________ Denotes field installation

2. - - - - - - - - - - - - - - - - - - - Denotes factory installation

3. Gas Valves: "UL listed electrically-operated safety valve for natural, or LP gas
as needed of appropriate pressure and temperature rating, 110v/60 HZ" or
Ansul gas valves. Part numbers 13707, 13708, 13709, 13710, and 17643.

4. Do not use black wire on snap-action switch in normal installation.
Black wire may only be used for extraneous alarm, light circuits, etc.

Wiring Diagrams

Equipment

Alarms

Waterwash

Fans

October 2010

35

35

Fire
System
Control

Box

HOOD-1B

CONTROL CENTER

EXHAUST

FAN-1B

EXHAUST

FAN-1A

HOOD-1A

POWER

PANEL

MUA FAN

FIELD WIRING

WATER WASH CONTROL

PANEL

W/ SWITCHES

Overall Wiring Plan View

Diagram illustrates the overall plan view
when the control center is located in the
make-up air unit.

EXHAUST

FAN-1A

POWER

PANEL

HOOD-1A

FIELD WIRING

Diagram illustrates the overall plan view
when utilizing a wall mounted kitchen

EXHAUST

FAN-1B

fan control center (KFCC)

EXHAUST

FAN-1A

EXHAUST

FAN-1B

HOOD-1B

MUA FAN

MUA FAN

CONTROL CENTER

Fire

System

Control

Box

CONTROL CENTER

WATER WASH CONTROL

PANEL

W/ SWITCHES

36

36

POWER

PANEL

FIELD WIRING

HOOD-1A

HOOD-1B

Fire

System

Control

Box

WATER WASH CONTROL

PANEL

W/ SWITCHES

KFCC

October 2010

Wiring for Hood Switch Panels

The diagrams below show a typical hood switch panel remote mounted.

All switches are provided in the waterwash control panel.

The diagram below shows how to wire the exhaust and supply fans with a control panel to a fire suppression
contact (FSC1). When wired properly, the supply fan will be turned off if the fire system is activated and allow the
exhaust fan to continue to operate.

JUNCTION BOX
ON TOP OF HOOD

HOOD

LIGHTS

CONTROL

VOLTGE

H

N

120/60/1

CONTROL

H

N

OPTIONAL

LIMIT SWITCH(ES)

IN AUTMATIC DAMPER

89 21 34 56

HOOD
LIGHTS

R1

START

I0.1

L+

I0.0

PLC

Q0.0

Q0.1

OL

EXH
FANFAN
STR STR

SUPPRESSION

CONTACTS

SUP

FIRE

STOP

HEAT

(OPTIONAL)

OL

N7

SUP
HTR

CTRL

WIRING BY OTHERS
FACTORY WIRING

October 2010

REMOTE MOUNTED WATERWASH CONTROL PANEL

37

37

Circuit Diagram

Single Throw

Double Throw

Center Off

Double Throw

Single Pole

OFF

ON

ON (NC) ON (NC)

ON (NO)

ON

OFF

ON

OFF

ON

ON (NO)

Double Pole

OFF

ON

OFF

ON ON

ON (NC)ON (NC)

ON (NO)

ON (NC)

ON (NO)

ON

OFF

ON

ON

OFF

ON

OFF

ON

OFF

ON (NO)

ON (NC)

ON (NO)

Off if both are not activated

Off if either are not activated

On if both are activated

Normally Open Contacts

On if both are not activated

Off if either are not activated

Off if both are activated

Normally Closed Contacts

Series Circuit

Parallel Circuit

Off if both are not activated

On if either is activated
On if both are activated

On if either is activated

Off if either not activated

Off if both are activated

38

38

October 2010

MODEL DESCRIPTION

WW

--

A = 24 HOUR TIMER

B = 7 DAY TIMER

1 = 1 WASH SEQUENCE
2 = 2 WASH SEQUENCES
3 = 3 WASH SEQUENCES
4 = 4 WASH SEQUENCES
5 = 5 WASH SEQUENCES

7 = 3/4" PIPE
10 = 1" PIPE

WATER WASH CONTROL PANEL - MODEL WW

W / VACUUM BREAKER

PIPE SIZE

PIPE SIZE

3/4"

1"

HOOD LENGTH > 20' MUST USE THE SEQUENCE
WASH OPTION. PIPE SIZE WILL DEPEND ON THE
LONGEST LENGTH OF HOOD WASHED AT ONE TIME

LENGTH OF LONGEST HOOD

OR SEQUENCE OF HOOD

4' - 10'

>10' - 20'

OPTIONAL:

LOW DETERGENT INDICATOR

SEQUENCED HOODS

TIMER

24 HOUR

7 DAY

WATER REQUIREMENTS

WATER TEMPERATURE 140° F. TO 180° F
WATER PRESSURE = 40 PSI TO 60 PSI
AVE. WATER USAGE = 1.1 GPM PER LN. FT. OF HOOD

(@ 40 PSI)

12.56

3.50

3.50

PIPE CONNECTION
(1.75 DIA. HOLE)

18.91

HINGED

DOOR

OPTIONAL

VACUUM BREAKER

FIELD INSTALLED

PIPE BY OTHERS

DETERGENT LINE

8.37

ELECTRICAL

CONNECTIONS

(.88 DIA. HLS)

6.0

TO HOOD(S)

CHECK VALV E
FIELD INSTALLED

6.37

4.37

9.53

HINGED

DOOR

SEQUENCE OF OPERATIONS

15 SEC. COLD WATER PURGE (OPTIONAL 30 SEC.)
4 MIN. WASH (OPTIONAL 0 TO 10 MIN.)
30 SEC. DETERGENT PURGE (OPTIONAL 1 MIN.)
15 MIN. SEQUENCE DELAY (OPT. 0 TO 45 MIN.)
1 MIN. DRAIN DOWN (OPTIONAL 10 MIN.)
1 MIN. DRY (FANS ON) (OPTIONAL 10 MIN.)

2.37

2.00

30"

30"

9"

WATER TEMPERATURE

& PRESSURE GAUGE

DETERGENT PUMP

SOLENOID VALV E

SHOCK ARRESTOR

PIPE BY OTHERS

October 2010

UNION

GATE VALVE

UNION

1"

WATER INLET

DETERGENT TANK

2.5 GAL. CAPACITY

DETAIL OF LABEL & SWITCHES

OPTIONAL SEQUENCING VALVES

FIELD INSTALLED

WATER WASH HOOD CONTROL PANEL

HOOD LIGHTS

LIGHTED LIGHTED

PUSH­BUTTON
SWITCH

1. PUSH THE START FAN SWITCH BEFORE TURNING ON THE COOKING EQUIPMENT.

2. WHEN THE COOKING EQUIPMENT HAS BEEN SHUT DOWN AND ALLOWED TO

COOL PROPERLY, PUSH THE STOP FAN / START WASH SWITCH. THIS WILL

TURN OFF THE FANS AND START THE WASH CYCLE. IF THE SYSTEM HAS

THE 24 HOUR TIMER OPTION THE WASH CYCLE WILL BEGIN AT THE SET

TIME. AFTER THE WASH CYCLE THE SYSTEM WILL RESET FOR THE NEXT

OPERATION.

FIRE MODE IS INITIATED BY AN EXTERNAL SIGNAL FROM A FIRE

SUPPRESSION SYSTEM. IN FIRE MODE THE WATER WASH SYSTEM WILL TURN

ON THE EXHAUST FAN AND CONTINUOUSLY SPRAY WATER INTO THE HOOD.

SEE THE INSTALLATION AND OPERATION MANUAL FOR MORE INFORMATION.

KITCHEN VENTILATION SYSTEMS

LOW DETERGENT

OPTIONAL
INDICATOR

LIGHT

STOP FAN /
START WASH

OPERATING INSTRUCTIONS

PUSH­BUTTON
SWITCH

FIRE MODE

FIRE MODE

INDICATOR

LIGHT

START FAN

LIGHTED

PUSH­BUTTON
SWITCH

P.N. 454034

39

39

MODEL DESCRIPTION

WW

--

A = 24 HOUR TIMER

B = 7 DAY TIMER

1 = 1 WASH SEQUENCE
2 = 2 WASH SEQUENCES
3 = 3 WASH SEQUENCES
4 = 4 WASH SEQUENCES
5 = 5 WASH SEQUENCES

7 = 3/4" PIPE
10 = 1" PIPE

WATER WASH CONTROL PANEL - MODEL WW

W / REDUCED PRESSURE BACKFLOW PREVENTER

PIPE SIZE

PIPE SIZE

3/4"

1"

HOOD LENGTH > 20' MUST USE THE SEQUENCE
WASH OPTION. PIPE SIZE WILL DEPEND ON THE
LONGEST LENGTH OF HOOD WASHED AT ONE TIME

LENGTH OF LONGEST HOOD

OR SEQUENCE OF HOOD

4' - 10'

>10' - 20'

OPTIONAL:

LOW DETERGENT INDICATOR

SEQUENCED HOODS

TIMER

24 HOUR

7 DAY

WATER REQUIREMENTS

WATER TEMPERATURE 140° F. TO 180° F
WATER PRESSURE = 40 PSI TO 60 PSI
AVE. WATER USAGE = 1.1 GPM PER LN. FT. OF HOOD

(@ 40 PSI)

14.38

10.75

7.13

3.50

3.50

1st

2nd

PIPE CONNECTIONS

FOR SEQUENCED WASHES

(1.75 DIA. HOLES)

4th3rd

18.91

HINGED

DOOR

TO HOOD(S)

PIPE BY OTHERS

OPTIONAL SEQUENCING VALVES

ELECTRICAL

CONNECTIONS

(.88 DIA. HLS)

8.37

9.53

HINGED

DOOR

SEQUENCE OF OPERATIONS

15 SEC. COLD WATER PURGE (OPTIONAL 30 SEC.)
4 MIN. WASH (OPTIONAL 0 TO 10 MIN.)
30 SEC. DETERGENT PURGE (OPTIONAL 1 MIN.)
15 MIN. SEQUENCE DELAY (OPT. 0 TO 45 MIN.)
1 MIN. DRAIN DOWN (OPTIONAL 10 MIN.)
1 MIN. DRY (FANS ON) (OPTIONAL 10 MIN.)

6.37

4.37

2.37

2.00

30"

30"

9"

40

40

UNION

WATER TEMPERATURE

& PRESSURE GAUGE

SOLENOID VALV E

DETERGENT PUMP

CHECK VALV E

SHOCK ARRESTOR

GATE VALVE

UNION

PIPE BY OTHERS

REDUCED PRESSURE

BACKFLOW PREVENTER

FIELD INSTALLED

1"

OPTIONAL

DETERGENT TANK

2.5 GAL. CAPACITY

WATER INLET

DETAIL OF LABEL & SWITCHES

KITCHEN VENTILATION SYSTEMS

WATER WASH HOOD CONTROL PANEL

STOP FAN /
START WASH

PUSH­BUTTON
SWITCH

FIRE MODE

FIRE MODE

INDICATOR

LIGHT

LOW DETERGENT

OPTIONAL

INDICATOR

LIGHT

HOOD LIGHTS

LIGHTED LIGHTED

PUSH­BUTTON
SWITCH

1. PUSH THE START FAN SWITCH BEFORE TURNING ON THE COOKING EQUIPMENT.

2. WHEN THE COOKING EQUIPMENT HAS BEEN SHUT DOWN AND ALLOWED TO

COOL PROPERLY, PUSH THE STOP FAN / START WASH SWITCH. THIS WILL

TURN OFF THE FANS AND START THE WASH CYCLE. IF THE SYSTEM HAS

THE 24 HOUR TIMER OPTION THE WASH CYCLE WILL BEGIN AT THE SET

TIME. AFTER THE WASH CYCLE THE SYSTEM WILL RESET FOR THE NEXT

OPERATION.

SUPPRESSION SYSTEM. IN FIRE MODE THE WATER WASH SYSTEM WILL TURN

ON THE EXHAUST FAN AND CONTINUOUSLY SPRAY WATER INTO THE HOOD.

OPERATING INSTRUCTIONS

FIRE MODE IS INITIATED BY AN EXTERNAL SIGNAL FROM A FIRE

SEE THE INSTALLATION AND OPERATION MANUAL FOR MORE INFORMATION.

START FAN

LIGHTED

PUSH­BUTTON
SWITCH

P.N. 454034

October 2010

MODEL DESCRIPTION

WW

--

A = 24 HOUR TIMER

B = 7 DAY TIMER

1 = 1 WASH SEQUENCE
2 = 2 WASH SEQUENCES
3 = 3 WASH SEQUENCES
4 = 4 WASH SEQUENCES
5 = 5 WASH SEQUENCES

7 = 3/4" PIPE
10 = 1" PIPE

WATER WASH CONTROL PANEL - MODEL WW

W / VACUUM BREAKER & COLD WATER SPRAY

PIPE SIZE

PIPE SIZE

3/4"

1"

HOOD LENGTH > 20' MUST USE THE SEQUENCE
WASH OPTION. PIPE SIZE WILL DEPEND ON THE
LONGEST LENGTH OF HOOD WASHED AT ONE TIME

LENGTH OF LONGEST HOOD

OR SEQUENCE OF HOOD

4' - 10'

>10' - 20'

OPTIONAL:

LOW DETERGENT INDICATOR

SEQUENCED HOODS

CONTINUOUS COLD WATER SPRAY

TIMER

24 HOUR

7 DAY

WATER REQUIREMENTS

HOT WATER TEMPERATURE 140° F. TO 180° F
HOT WATER PRESSURE = 40 PSI TO 60 PSI
AVE. HOT WATER USAGE = 1.1 GPM PER LN. FT. OF HOOD

COLD WATER PRESSURE = 30 PSI TO 60 PSI
AVE. COLD WATER USAGE = 0.076 GPM PER LN. FT. OF HOOD

(@ 40 PSI)

(@ 25 PSI)

16.78

12.56

3.50

3.50

DETERGENT LINE

3/4" OR 1" PIPE

CONNECTION

18.91

HINGED

DOOR

OPTIONAL

VACUUM BREAKER

FIELD INSTALLED

PIPE BY OTHERS

CHECK VALV E
FIELD INSTALLED

ELECTRICAL

CONNECTIONS

(.88 DIA. HLS)

3/4" PIPE

CONNECTION

6.0

TO HOOD(S)

8.44

6.44

4.44

9.53

HINGED

DOOR

SEQUENCE OF OPERATIONS

15 SEC. COLD WATER PURGE (OPTIONAL 30 SEC.)
4 MIN. WASH (OPTIONAL 0 TO 10 MIN.)
30 SEC. DETERGENT PURGE (OPTIONAL 1 MIN.)
15 MIN. SEQUENCE DELAY (OPT. 0 TO 45 MIN.)
1 MIN. DRAIN DOWN (OPTIONAL 10 MIN.)
1 MIN. DRY (FANS ON) (OPTIONAL 10 MIN.)

ELECTRICAL REQUIREMENTS

115 VA C, 20 AMP
SEPARATELY FUSED SERVICE

2.44

2.06

30"

30"

9"

WATER TEMPERATURE

& PRESSURE GAUGE

SOLENOID VALV E

DETERGENT PUMP

SHOCK ARRESTOR

PIPES BY OTHERS

October 2010

UNION

GATE VALVES

UNIONS

3/4"

3/4"

1" or

WATER INLETS

TO HOOD(S)

UNION

WATER TEMPERATURE
& PRESSURE GAUGE

SOLENOID VALV E

PRESSURE
REGULATOR

DETERGENT TANK

2.5 GAL. CAPACITY

DETAIL OF LABEL & SWITCHES

OPTIONAL SEQUENCING VALVES

FIELD INSTALLED

WATER WASH HOOD CONTROL PANEL

HOOD LIGHTS

LIGHTED LIGHTED

PUSH­BUTTON
SWITCH

1. PUSH THE START FAN SWITCH BEFORE TURNING ON THE COOKING EQUIPMENT.

2. WHEN THE COOKING EQUIPMENT HAS BEEN SHUT DOWN AND ALLOWED TO

COOL PROPERLY, PUSH THE STOP FAN / START WASH SWITCH. THIS WILL

TURN OFF THE FANS AND START THE WASH CYCLE. IF THE SYSTEM HAS

THE 24 HOUR TIMER OPTION THE WASH CYCLE WILL BEGIN AT THE SET

TIME. AFTER THE WASH CYCLE THE SYSTEM WILL RESET FOR THE NEXT

OPERATION.

FIRE MODE IS INITIATED BY AN EXTERNAL SIGNAL FROM A FIRE

SUPPRESSION SYSTEM. IN FIRE MODE THE WATER WASH SYSTEM WILL TURN

ON THE EXHAUST FAN AND CONTINUOUSLY SPRAY WATER INTO THE HOOD.

SEE THE INSTALLATION AND OPERATION MANUAL FOR MORE INFORMATION.

KITCHEN VENTILATION SYSTEMS

LOW DETERGENT

OPTIONAL

INDICATOR

LIGHT

STOP FAN /
START WASH

PUSH­BUTTON
SWITCH

OPERATING INSTRUCTIONS

FIRE MODE

FIRE MODE

INDICATOR

LIGHT

START FAN

LIGHTED

PUSH­BUTTON
SWITCH

P.N. 454034

41

41

MODEL DESCRIPTION

WW

--

A = 24 HOUR TIMER

B = 7 DAY TIMER

1 = 1 WASH SEQUENCE
2 = 2 WASH SEQUENCES
3 = 3 WASH SEQUENCES

4 = 4 WASH SEQUENCES
7 = 3/4" PIPE
10 = 1" PIPE

12 = 1 1/4" PIPE - MAX. 2 SEQ>
15 = 1 1/2" PIPE - MAX. 2 SEQ>

WATER WASH CONTROL PANEL - MODEL WW

W / REDUCED PRESSURE BACKFLOW PREVENTER

PIPE SIZE

PIPE SIZE

3/4"

1"
1 1/4"
1 1/2"

HOOD LENGTH > (MAX)' MUST USE THE SEQUENCE
WASH OPTION. PIPE SIZE WILL DEPEND ON THE
LONGEST LENGTH OF HOOD WASHED AT ONE TIME

LENGTH OF LONGEST HOOD

OR SEQUENCE OF HOOD

>4' - 10(max)'

>10' - 20(max)'
>20' - 30(max)'
>30' - 45(max)'

OPTIONAL:

LOW DETERGENT INDICATOR

SEQUENCED HOODS

TIMER

24 HOUR

7 DAY

WATER REQUIREMENTS

WATER TEMPERATURE 140° F. TO 180° F
WATER PRESSURE = 40 PSI TO 60 PSI
AVE. WATER USAGE = 1.1 GPM PER LN. FT. OF HOOD

(@ 40 PSI)

18.00

3.83

TRIM ANGLE

ALL AROUND

2.38

18.91

HINGED

DOOR

PIPE BY OTHERS

TO HOOD(S)

UNION

WATER TEMPERATURE

& PRESSURE GAUGE

ELECTRICAL

CONNECTIONS

(.88 DIA. HLS)

8.37

8.53

HINGED

DOOR

SEQUENCE OF OPERATIONS

15 SEC. COLD WATER PURGE (OPTIONAL 30 SEC.)
4 MIN. WASH (OPTIONAL 0 TO 10 MIN.)
30 SEC. DETERGENT PURGE (OPTIONAL 1 MIN.)
15 MIN. SEQUENCE DELAY (OPT. 0 TO 45 MIN.)
1 MIN. DRAIN DOWN (OPTIONAL 10 MIN.)
1 MIN. DRY (FANS ON) (OPTIONAL 10 MIN.)

6.37

4.37

2.37

2.00

48"

30"

7"

DETAIL OF LABEL & SWITCHES

REDUCED PRESSURE

BACKFLOW PREVENTER

42

42

SOLENOID VALV E

SHOCK ARRESTOR

DETERGENT PUMP

CHECK VALV E

UNION

DETERGENT TANK

4.5 GAL. CAPACITY

PIPE BY OTHERS

TO
DRAIN

WATER
INLET

TIMER

BALL VALVE

PIPE BY OTHERS

KITCHEN VENTILATION SYSTEMS

WATER WASH HOOD CONTROL PANEL

STOP FAN /
START WASH

PUSH­BUTTON
SWITCH

FIRE MODE

FIRE MODE

INDICATOR

LIGHT

START FAN

LOW DETERGENT

INDICATOR

LIGHT

HOOD LIGHTS

LIGHTED LIGHTED

PUSH­BUTTON
SWITCH

1. PUSH THE START FAN SWITCH BEFORE TURNING ON THE COOKING EQUIPMENT.

2. WHEN THE COOKING EQUIPMENT HAS BEEN SHUT DOWN AND ALLOWED TO

COOL PROPERLY, PUSH THE STOP FAN / START WASH SWITCH. THIS WILL

TURN OFF THE FANS AND START THE WASH CYCLE. IF THE SYSTEM HAS

THE 24 HOUR TIMER OPTION THE WASH CYCLE WILL BEGIN AT THE SET

TIME. AFTER THE WASH CYCLE THE SYSTEM WILL RESET FOR THE NEXT

OPERATION.

SUPPRESSION SYSTEM. IN FIRE MODE THE WATER WASH SYSTEM WILL TURN

ON THE EXHAUST FAN AND CONTINUOUSLY SPRAY WATER INTO THE HOOD.

SEE THE INSTALLATION AND OPERATION MANUAL FOR MORE INFORMATION.

OPERATING INSTRUCTIONS

FIRE MODE IS INITIATED BY AN EXTERNAL SIGNAL FROM A FIRE

LIGHTED

PUSH­BUTTON
SWITCH

P.N. 454034

October 2010

WATER WASH CONTROL PANEL - MODEL WW

W / REDUCED PRESSURE BACKFLOW PREVENTER & COLD WATER SPRAY

MODEL DESCRIPTION

WW

--

A = 24 HOUR TIMER

B = 7 DAY TIMER

1 = 1 WASH SEQUENCE
2 = 2 WASH SEQUENCES
3 = 3 WASH SEQUENCES
4 = 4 WASH SEQUENCES
5 = 5 WASH SEQUENCES

7 = 3/4" PIPE
10 = 1" PIPE

PIPE SIZE

3/4"

HOOD LENGTH > 20' MUST USE THE SEQUENCE
WASH OPTION. PIPE SIZE WILL DEPEND ON THE
LONGEST LENGTH OF HOOD WASHED AT ONE TIME

1"

PIPE SIZE

LENGTH OF LONGEST HOOD

OR SEQUENCE OF HOOD

4' - 10'

>10' - 20'

OPTIONAL:

LOW DETERGENT INDICATOR

SEQUENCED HOODS

CONTINUOUS COLD WATER SPRAY

TIMER

24 HOUR

7 DAY

WATER REQUIREMENTS

HOT WATER TEMPERATURE 140° F. TO 180° F
HOT WATER PRESSURE = 40 PSI TO 60 PSI
AVE. HOT WATER USAGE = 1.1 GPM PER LN. FT. OF HOOD

COLD WATER PRESSURE = 30 PSI TO 60 PSI
AVE. COLD WATER USAGE = 0.076 GPM PER LN. FT. OF HOOD

(@ 40 PSI)

(@ 25 PSI)

16.78

12.56

3.50

3.50

DETERGENT LINE

3/4" OR 1" PIPE

CONNECTION

18.91

HINGED

DOOR

PIPE BY OTHERS

TO HOOD(S)

TO HOOD(S)

UNION

WATER TEMPERATURE

& PRESSURE GAUGE

SOLENOID VALV E

DETERGENT PUMP

CHECK VALV E

SHOCK ARRESTOR

GATE VALVES

8.44

ELECTRICAL

CONNECTIONS

(.88 DIA. HLS)

3/4" PIPE

CONNECTION

UNION

WATER TEMPERATURE
& PRESSURE GAUGE

SOLENOID VALV E

6.44

4.44

9.53

HINGED

DOOR

SEQUENCE OF OPERATIONS

15 SEC. COLD WATER PURGE (OPTIONAL 30 SEC.)
4 MIN. WASH (OPTIONAL 0 TO 10 MIN.)
30 SEC. DETERGENT PURGE (OPTIONAL 1 MIN.)
15 MIN. SEQUENCE DELAY (OPT. 0 TO 45 MIN.)
1 MIN. DRAIN DOWN (OPTIONAL 10 MIN.)
1 MIN. DRY (FANS ON) (OPTIONAL 10 MIN.)

ELECTRICAL REQUIREMENTS

115 VA C, 20 AMP
SEPARATELY FUSED SERVICE

2.44

2.06

OPTIONAL SEQUENCING VALVES

FIELD INSTALLED

9"

30"

DETAIL OF LABEL & SWITCHES

KITCHEN VENTILATION SYSTEMS

WATER WASH HOOD CONTROL PANEL

STOP FAN /
START WASH

PUSH­BUTTON
SWITCH

FIRE MODE

INDICATOR

LIGHT

LOW DETERGENT

OPTIONAL

INDICATOR

LIGHT

HOOD LIGHTS

LIGHTED LIGHTED

PUSH­BUTTON
SWITCH

START FAN

LIGHTED

PUSH­BUTTON
SWITCH

30"

PIPES BY OTHERS

October 2010

UNIONS

3/4"

1" or

REDUCED PRESSURE

BACKFLOW PREVENTER

OPTIONAL

FIELD INSTALLED

3/4"

COLD WATER INLET

PRESSURE
REGULATOR

DETERGENT TANK

2.5 GAL. CAPACITY

HOT WATER INLET

1. PUSH THE START FAN SWITCH BEFORE TURNING ON THE COOKING EQUIPMENT.

2. WHEN THE COOKING EQUIPMENT HAS BEEN SHUT DOWN AND ALLOWED TO

COOL PROPERLY, PUSH THE STOP FAN / START WASH SWITCH. THIS WILL

TURN OFF THE FANS AND START THE WASH CYCLE. IF THE SYSTEM HAS

THE 24 HOUR TIMER OPTION THE WASH CYCLE WILL BEGIN AT THE SET

TIME. AFTER THE WASH CYCLE THE SYSTEM WILL RESET FOR THE NEXT

OPERATION.

SUPPRESSION SYSTEM. IN FIRE MODE THE WATER WASH SYSTEM WILL TURN

ON THE EXHAUST FAN AND CONTINUOUSLY SPRAY WATER INTO THE HOOD.

SEE THE INSTALLATION AND OPERATION MANUAL FOR MORE INFORMATION.

OPERATING INSTRUCTIONS

FIRE MODE IS INITIATED BY AN EXTERNAL SIGNAL FROM A FIRE

FIRE MODE

P.N. 454034

43

43

120/60/1

LADDER DIAGRAM FOR WATER WASH CONTROL PANEL

VOLTAGE

FROM SUPPLY FAN

NG

START FAN

STOP FAN / START WASH

F.S. SWITCH

15 SEC. ADDITIONAL COLD PURGE

30 SEC. ADDITIONAL DET. PURGE

OPTIONAL TIMER

9 MIN. ADDTIONAL DRIP DOWN

9 MIN. ADDITIONAL DRY TIME

FUSE

17

17

16

16

3

L

H

N

7

21

OPTIONAL HEATER SWITCH

HEATER

R2

L

98

L

L

HOOD LIGHTS

L

R2

LIGHTS

R1

SIEMENS

SIMATIC

S7-200

SF

RUN

STOP

FAN ON

65

OFF / WASH

FIRE

TIMER

+15 SEC. COLD

+30 SEC. DET.

+9 MIN. DRIP

+9 MIN. DRY

2M

INPUTS

L+M1.51.41.31.21.11.00.70.60.50.40.30.20.10.01M

WASH

TIME

DELAY

SEQ.

10

FANS

MAIN

SEQ. 1

SEQ. 2

PROGRAMMABLE

CONTROLLER

2L*0.30.20.10.01L

0.4

SEQ. 3

SEQ. 4

SEQ. 5

SUPPLY

PUMP

STOP

TERM

RUN

FIRE

OUTPUTS

AC/DC/RLY

CPU 224

L1N1.11.00.73L*0.60.5

12/19

14/21

11/18

S2

13/20

S4

15/22

R3

FS1FAN STARTER 1

FS2

4

CWS

PL

MV

S1

10/24

S3

10/23

S5

FS3

FS4

D

PL

FAN STARTER 2

COLD WATER SPRAY (OPTIONAL)

2527

IND. LIGHT FAN

PL

IND. LIGHT WASH

MAIN VALVE SEQ. HOODS

2418

REMOTE SOLENOID VALV E SEQ. #1

10/24

REMOTE SOLENOID VALV E SEQ. #2

REMOTE SOLENOID VALV E SEQ. #3

10/24

REMOTE SOLENOID VALV E SEQ. #4

REMOTE SOLENOID VALV E SEQ. #5

10/23

SUPPLY FAN STARTER 1

SUPPLY FAN STARTER 2

DETERGENT PUMP

2526

IND. LIGHT FIRE MODE

OPTIONAL

44

44

WIRING SCHEMATIC

FACTORY WIRED
FIELD WIRED

PL

OPTIONAL LOW DETERGENT INDICATOR

October 2010

MAINTENANCE:

Daily

• Hoodexteriorsurfacesshouldbewipedclean.UseSC-5brandcleaningsolutionasrecommendindetergent

pump section.

Weekly

• Detergenttankshouldbecheckedandrefilledatleastonceperweek.

• Checknozzles.Cleanorreplaceallcloggednozzles.

• Checkdrainforclogging.

Monthly

• Detergentsystemfittingsshouldbechecked.Thisisanairtightsystemandfittingsmustbetight.

• Afterawashcyclehasbeencompleted,openhoodinspectionpanels(SeeFig.27.)andchecktoensurethat

the interior has been cleaned of all grease, dust, lint, etc. If overall cleaning appears to be inadequate, see
Troubleshooting and Detergent Pump Sections.

• Checkthemaingreasegutterofthehoodforanyforeignmaterialsandremove.

Every Six Months

• Checkexhaustfansforbelttightness,beltalignment,andlubricationofmovingparts.

• Checkforproperairvolumes.

Fig. 27

The access panel is
removed by lifting it
upward to release
the bottom edge
bracket and side
clips. The panel
can then be lifted
clear of the hood.

Access
panel

Exhaust
plenum

Access
panel

Exhaust
plenum

TROUBLESHOOTING:

Before calling your manufacturers representative to report a problem have the
following information available:

1. Review / summary of troubleshooting section in installation operation manual.

2. Hood model and serial number.

3. Current cooking equipment line-up.

4. Size of hood (length, width and height).

5. Island or wall configuration.

6. Multiple hoods on one fan.

7. Nature of spillage (one end; all around the edges).

8. Does the smoke make it to the hood?

9. Height hood is mounted above finished floor.

10. How make-up air is brought into the kitchen (hood, ceiling diffusers, separate plenum).

11. Is exhaust system controlled by a variable volume system or building management system?

12. Is the fan noisy.

October 2010

45

45

Waterwash System

Hood not clean enough
If the hood does not seem to be adequately cleaned, look for the following:

   • Watersupply—Isitturnedon?
   • Nozzles—Areanyofthemclogged?Ifso,theycanberemovedandclearedusinga  

small wire.

   • Detergenttank—Isitempty,orfilledwiththewrongdetergent?
   • Waterpressure—Isitabovetheminimum40PSI?
   • Watertemperature—Isitabovethe140°Fminimum?
   • Detergentpump—Isthemixratiotoolowforthetypeofaccumulationsonthehood?
   • LengthofWashCyclecanbeincreased.(ConsultFactory).

Hot water running, system not in wash cycle

If there is water running through the system when the hood is not in a cleaning cycle, the sys-
tem may be in fire mode. (Fire mode indicator light will be lit.) Check to ensure that the water
wash system is wired to the fire system microswitch and that there is a jumper between
terminal s 5 & 6 on the PLC.

Hot water running continuously after wash cycle, detergent pump not running

If water is spraying, but the detergent pump is not running (and fire mode and wash indicator
lights are off) the solenoid valve may be stuck in the open position. To correct:

   • Gentlytapthevalvehousingtoreleaseanyforeignmaterialtrappedinthevalve.
   • Ifthisdoesnotcorrecttheproblem,itisnecessarytoremovethevalvecoilandstem. 

CAUTION: Turn off electrical power before disassembling valve. Clean valve coil and stem,
and re-install very carefully to avoid damaging the plunger.

   • Checkvalvediaphragmforfailure.Ifithasfailed,rebuildit.Kitsofvarioussizesare

available. See the Waterwash Start-up Checklist on page 52.

   • Ifsolenoidsticksregularly,foreignmaterialgettingpastthebuilding’slinestraineristhe 

most likely cause. Remove and clean the strainer, or install an additional strainer in line
before the waterwash cabinet.

Wash indicator light on, no hot water running

If the Wash Cycle indicator light is lit, but water is not spraying, look for the following:

   • Shutoffvalve—Thisvalve,locatedinsidethecontrolstation,mustbeintheopen  

position.

   • WaterSolenoidvalve

- Check to be sure that water solenoid valve is getting power at the terminal strip.

- Check electrical continuity to determine if coil has burned out.

- Gently tap the valve housing to release any foreign material trapped in the valve.

   • Iftheabovestepsdonotcorrecttheproblem,itisnecessarytoremovethevalvecoil 

and stem. CAUTION: Turn off electrical power before disassembling valve.
Clean valve coil and stem, and re-install very carefully to avoid damaging the plunger.

If after checking all components, the problem continues, check the wiring circuit.
See wiring diagram.

Water leaks

   • Checkallpipefittings.
   • Ductworkmaynotbeliquidtightasrequired.
   • Aretheaccesspanelsfittingsnuglytogether?Fingersandclipsmayneedtobeadjusted.
   • Arethefansrunningduringthewashcycle?Fanshouldbeoffduringwash.Ensurethatpower

to the fan is running through terminals 3 & 4 on the waterwash control panel.

   • Isthewaterpressuretoohigh?Turnthepressuredownto40psi.

46

46

October 2010

Vacuum breaker problems

If the vacuum breaker leaks or seems to snap at the beginning or end of a cycle, check the
following:

   • Mountingheight—Thevacuumbreakermustbemountedaminimumof6in.higherthan 

the line to the hood.

   • Nyloncheckvalvetravel—Removethetopcapofthevacuumbreakeranddetermineif 

the nylon check valve is free to slide up and down the guide stem properly and that the
stem is straight.

   • Rubberwasher—Determineifthewasherontopofthecheckvalveseatsproperly  

against the machined surface and that the mating surfaces of both are smooth.
Replace if necessary.

Poor drainage

If the hood does not drain properly, look for the following:

   • Cloggedoutlet—Clearanyforeignmaterial(papertowels,rags,etc.)fromthehood’s 

internal drain outlet.

   • Cloggedgreasetraps—Wheregreasetrapsareinstalled,theymaybecomeclogged 

and cause drains to back up. If so, they must be kept clear.

   • Drainsizeinadequate—Drainsshouldbeaminimumof1-1/2in.dia.

Optional Continuous Cold Water Mist

If the fan runs but no cold water, check for the following:

   • Shut-offvalveclosed
   • Cloggedstrainerinthepressurereducingvalve.
   • Watersolenoidvalve

- Check to be sure that water solenoid valve is getting power at the terminal strip.

- Check electrical continuity to determine if coil has burned out.

- Gently tap the valve housing to release any foreign material trapped in the valve.

   • Nozzlesmaybeplugged.

If cold water is running after the fans shut-off, check the following:

   • Solenoidmaybestuckintheopenposition.
   • Isthesysteminfiremode?

If water leaks from top of the hood then:

   • Checkallpipefittings
   • Ductworknotliquidtightasrequired.

If little or no water spraying from the nozzles look for:

   • Nozzlespluggedandneedtobecleaned.
   • Verifythewaterpressureabove25psi.
   • Cloggedstrainerlocatedinthepressurereducingvalve.
   • Watersupplysystemnotproperlyflushed.

Reduced pressure backflow preventer (RPBP) may spit small amounts of water as fixtures upstream are
used. Air gap assembly may be needed to catch drips and drain them away to a sanitary sewer.

October 2010

47

47

TROUBLESHOOTING

Problem: Exhaust fan is not operating or is not operating at design levels.

Items to Check Possible Solution

Is the fan receiving power? Replace fuses, reset circuit breakers, check disconnect.
Is the belt loose or broken? Replace or tighten belt.
Is the fan rotating in correctly? Have the electrician correctly wire the fan.
Is the make-up air operating? Problems with make-up air may interfere with the exhaust fan -
check the manufacturers installation manual.
Does the airflow need to be Adjust or replace pulleys to increase fan RPM, install a larger
increased? motor.
Does the fan vibrate? Clean the fan wheel/blade, replace fan wheel if damaged, check for
loose bolts, check for broken or damaged components, check for rags
and other foreign objects.

Problem: Hood is full of smoke. There is smoke coming out of the edges of the hood.

Items to Check Possible Solution

Is the fan operating at design levels? See exhaust fan section.
Is the fan correctly sized? Refer to test and balance report, design specifications and fan curves;
have an electrician check the motor amperage; try removing the filter
temporarily to see if capture improves
(Make sure to replace filter to prevent risk of fire!); switch to
different filters with lower static pressure.
Are the filters in good condition? Clean filters, replace damaged filters, properly position filters.
Is there sufficient make-up air? Check make-up air unit, increase make-up air, make-up air should be
(Kitchen should be in a slight evenly distributed throughout the kitchen.
negative but not excessive-check to
see if there is a strong draft through
an open door)
Does the current cooking equipment Adjust or replace fan to match the cooking equipment load.
match the original design?
Are there multiple hoods on one fan? One hood may be over exhausting and the other hood not drawing
enough - restrict second hood to help problem hood.
Are there closed dampers in the duct? Open dampers.
Is the ductwork complex or to small? Change to a higher static fan, modify the ductwork.
Is the ductwork obstructed? Clear obstruction.
Is this a short circuit hood? Turn off or reduce the amount of air supplied to short circuit.

Problem: Smoke blows away before reaching the bottom of the hood.

Items to Check Possible Solution

Are there cooling fans directed at Turn off or redirect fans.
the hood or cooking equipment?
Are there ceiling diffusers directing Move diffusers to more neutral area or replace with a diffuser that directs
air at the hood? air away from the hood.
Are there open windows or doors? Close windows and doors.
Are there cross drafts or other drafts Find source of the draft and eliminate, add side skirts to hood (test with
in the kitchen? cardboard - use stainless for permanent side skirts); increase the
amount of overhang on the spillage side; add a 6 in. lip around the base
of the hood (test with cardboard - use stainless for permanent side
skirts); make-up air should be spread out evenly through the kitchen.
Is the hood near a main walkway? Add side skirts to hood (test with cardboard first); increase the amount
of overhang on spillage side.

48

48

October 2010

Problem: Smoke blows away before reaching the bottom of the hood.

Items to Check Possible Solution

Are there pass thru windows near Adjust amount and locations of make-up air to eliminate drafts
the hood? through the pass through windows.
Is this an air curtain hood? Turn off or reduce the amount of make-up air.
Is the make-up air part of the hood Try turning off or reducing the amount of make-up air; block off portions
or an attached plenum? of the supply to direct air away from the problem area (test with
cardboard)

Problem: Pilot lights are being blown out or cooking equipment is being cooled by make-up air.

Items to Check Possible Solution

Are there drafts from make-up air? Try turning off or reducing the amount of make-up air; block off portions
of the supply to direct air away from the problem area (test with
cardboard first); remove any obstructions in front of supply that directs air
toward cooking equipment.

Problem: Cold air can be felt by the cook at the hood.

Items to Check Possible Solution

Is this a short circuit hood? Turn off or reduce the amount of air supplied to short circuit.
Is this an air curtain hood? Turn off or reduce the amount of air supplied to the air curtain; heat the
supply air.
Is the make-up air part of the hood Try turning off or reducing the amount of make-up air; heat the supply air.
or an attached plenum?

Problem: The kitchen gets hot.

Items to Check Possible Solution

Is the hood capturing? Hood is not drawing enough air, see sections above on fan performance
and hood capture.
Is this an air curtain hood? Turn off or reduce the amount of air supplied to the air curtain.
Is the make-up air part of the hood Try turning off or reducing the amount of make-up air; cool the supply air.
or an attached plenum?

Problem: Cooking odors in the dining area.

Items to Check Possible Solution

Is the hood capturing? Hood is not drawing enough air, see sections above on fan performance
and hood capture.
Is there a draft through doors Decrease make-up air in the kitchen; increase exhaust air through hood.
between the kitchen and dining area?

Problem: Grease is running off the hood.

Items to Check Possible Solution

Is there grease on top of the hood? Exhaust duct is not correctly welded.
Is the caulk missing or damaged? Clean problem area and recaulk.
Is the grease cup inserted properly? Put grease cup back in place.

Problem: Hood is noisy.

Items to Check Possible Solution

Is the fan running in the correct See fan section.
direction?
Are the filters in place? Replace missing filters.
Is the hood over exhausting? Slow down fan (see fan section)

October 2010

49

49

Approved Waterwash Detergent - Not provided by Accurex

SC5 from 2010 Products call 800-286-2010

X-701 from ZEP Manufacturing call 877-428-9937

Replacement Parts:

When Ordering Parts: please be prepared to provide us with your cabinet and hood system model

number and serial number from labels on the hood and cabinet. See the diagram and chart below as well as the
drawing on the following page to identify the replacement parts needed.

Accurex Part Number
Waterwash Nozzles 453675
Continuous Cold Water Mist Nozzles 456767

General Replacement Parts

Part Number Description

451131 Grease Cup (GH, GK and GX Hoods)

453498 Glass Globes for hood lights (clear)

851744 GX Filter Removal Tool

851834 Baffle (GH) Filter Removal Tool

851747 GK Filter Removal Tool

Repair Kits:

Solenoid Repair Kit from Grainger
Solenoid Model 1A579 - Repair Kit # K-1180
Solenoid Model 1A578 - Repair Kit # K-1172

Pump Repair from Blue-White Industries
Model C-600 call 714-893-8529

Reduced Pressure Backflow Preventer from ConbraCo.

Call 1-704-841-6000 or visit www.conbraco.com

50

50

October 2010

Replacement Parts

QTY 1 REQ'D

PILOT LIGHT RED

P. N. 382802

W/120V LED

FIRE MODE

W/120V LED

LIGHT UNIT GREEN

P. N. 382567

MATCH

QTY 2 REQ'D

P. N. 382669

MOMENTARY GREEN

QTY 2 REQ'D

ILL. PUSH BUTTON

P. N. 382369

N.O. CONTACT BLOCK

QTY 2 REQ'D

FOR FURNAS &

CUTLER-HAMMER

LENS COVER

RED : 00381876

AMBER : 00381877

GREEN : 00381875

COLOR MUST

REPLACEMENT LIGHT BULBS

P.N. 454034

P. N. 456854

LATCH

COOL PROPERLY, PUSH THE STOP FAN / START WASH SWITCH. THIS WILL

2. WHEN THE COOKING EQUIPMENT HAS BEEN SHUT DOWN AND ALLOWED TO

1. PUSH THE START FAN SWITCH BEFORE TURNING ON THE COOKING EQUIPMENT.

TURN OFF THE FANS AND START THE WASH CYCLE. IF THE SYSTEM HAS

TIME. AFTER THE WASH CYCLE THE SYSTEM WILL RESET FOR THE NEXT

THE 24 HOUR TIMER OPTION THE WASH CYCLE WILL BEGIN AT THE SET

OPERATION.

FIRE MODE

FIRE MODE IS INITIATED BY AN EXTERNAL SIGNAL FROM A FIRE

VACUUM BREAKER

3/4" - P.N. 453678

1" - P.N. 453679

QTY 1 REQ'D

REDUCED PRESSURE

BACKFLOW PREVENTER

3/4" - P.N. 463842

1" - P.N. 463843

QTY 1 REQ'D

AIR GAP FOR RBPB

3/4" or 1" - P.N. 459304

SEE THE INSTALLATION AND OPERATION MANUAL FOR MORE INFORMATION.

ON THE EXHAUST FAN AND CONTINUOUSLY SPRAY WATER INTO THE HOOD.

SUPPRESSION SYSTEM. IN FIRE MODE THE WATER WASH SYSTEM WILL TURN

LIGHT UNIT

W/120V LED

P. N. 382567

QTY 1 REQ'D

QTY 1 REQ'D (optional)

KITCHEN VENTILATION SYSTEMS

WATER WASH HOOD CONTROL PANEL

LOW

OPTIONAL

DETERGENT

LOW DETERGENT

STOP FAN /

START WASH START FAN

HOOD LIGHTS

OPERATING INSTRUCTIONS

QTY 1 REQ'D

QTY 1 REQ'D

P. N. 382369

P. N. 380326

TERMINAL BLOCK

N.O. CONTACT BLOCK

QTY 1 REQ'D

P. N. 382795

QTY 1 REQ'D

P. N. 380821

RELAY BASE 8-PIN

VAR. QTY REQ'D

12378910 11 12456

P. N. 381044

RELAY DPDT

25 AMP RELAY

P. N. 382752

QTY 1 REQ'D

QTY 1 REQ'D

3

6

9

4

7

1

6435

7281

123456

P. L.C. CPU

B

A

SF

SIMATIC

S7-200

SIEMENS

FUSE BLOCK

L1N1.11.00.73L*0.60.5

L+M1.51.41.31.21.11.00.70.60.50.40.30.20.10.01M

CPU 224

AC/DC/RLY

INPUTS

OUTPUTS

10

SEQ.

DELAY

FIRE

RUN

TERM

STOP

PUMP

TIME

WASH

SUPPLY

SEQ. 5

2M

+9 MIN. DRY

SEQ. 4

+9 MIN. DRIP

SEQ. 3

0.4

+30 SEC. DET.

CONTROLLER

2L*0.30.20.10.01L

+15 SEC. COLD

PROGRAMMABLE

TIMER

SEQ. 2

FIRE

SEQ. 1

OFF / WASH

MAIN

FAN ON

FANS

RUN

STOP

ILL. PUSHBUTTON, MAINT. GREEN

QTY 1 REQ'D

P. N. 380565

FUSE

H25030-1PR

380814

CLOCK

MOTOR

QTY 1 REQ'D

P. N. 382566

FUSE, LABEL

P. N. 380391

QTY 1 REQ'D

455622

30A
250V

FUSE BLOCK

MAXIMUM FUSE

FUSIBLE MAXIMUM

__ AMPS___VOLTS

PARTS SHIPPED LOOSE

SOLENIOD VALV E

3/4" - P.N. 381050

P. N. 455622

QTY 1 REQ'D

TIMER, 24 HOUR

1" - P.N. 381051

VAR. QTY REQ'D

TIMER, 7 DAY

QTY 1 REQ'D

P. N. 457586

or

ANTI-SIPHON VALV E

SOLENIOD COIL

P. N. 381049

VAR. QTY REQ'D

OPTIONAL

P. N. 457586

QTY 1 REQ'D

ONLY REQ'D W/

P. N. 454188

QTY 1 REQ'D

TIMER OPTIONS

FOR SERVICE PARTS CALL: 715-355-2349 or 355-2543

October 2010

GROUND LUG

PRESSURE GUAGE

P.N. 456765

QTY 1 REQ'D

SOLENOID VALV E

P.N. 381050

QTY 1 REQ'D

SOLENOID COIL

P.N. 381049

QTY 1 REQ'D

OPTIONAL

ONLY REQ'D W/

COLD WATER MIST

FOR TECHNICAL INFORMATION CALL: 715-355-2381 or 355-2447

P. N. 381197

DETERGENT PUMP

P. N. 453961

QTY 1 REQ'D

QTY 1 REQ'D

QTY 1 REQ'D

P. N. 381104

SWITCH LIQUID LEVEL

TUBING

DET. TANK

WEIGHT

CLEAR

TUBING

WHITE

OPTIONAL

ONLY REQ'D W/

LOW DETERGENT

STRAINER

PRESSURE

REDUCING

GATE VALVE

ANTI-SIPHON

VALV E

P. N. 454188

QTY 1 REQ'D

WATER SHOCK

ARRESTOR

P. N. 453682

QTY 1 REQ'D

GATE VALVE

3/4" - P. N. 453671

3/4" - P. N. 381050

1" - P.N. 381051

VAR. QTY REQ'D

SOLENIOD VALV E

TEMP/PRESSURE GUAGE

P. N. 457585

QTY 1 REQ'D

SOLENIOD COIL

P. N. 381049

VAR. QTY REQ'D

1" - P.N. 453672

3/4" - P. N. 453671

QTY 1 REQ'D

VALV E

QTY 1 REQ'D

REPLACEMENT HOOD NOZZLES

INDICATOR LIGHT

P. N. 456766

QTY 1 REQ'D

WATER WASH - 453675

COLD WATER MIST - 456767

OPTIONAL

ONLY REQ'D W/

COLD WATER MIST

51

51

Waterwash Start-up Checklist

Check boxes when this has been verified and gone over with customer.

HOOK-UP

r Plumbing Connected

Hot water supply
Piping to hoods(s)
Drain if RPBP is installed in cabinet
Shut-off valve(s) open

r Electrical Connected

120V/1 20A to terminals 1 & 2
Fans to terminals 3 & 4
Fire system microswitch to terminals 5 & 6 (sends signal to PLC input terminal I0.2)
Hood lights to terminals 8 & 9
Remote solenoid valves to terminals 10 thru 15 (only with vacuum breaker)

r Detergent

Suction tubing & strainer to bottom of detergent tank
Low detergent sensor in bottom of detergent tank (optional)
Detergent tank filled with proper detergent (SC-5)

r Timer, 24 hour / 7 day (optional)

Programmed - see instruction on page 25
Manually operate to send signal to PLC input terminal I0.3

r OFF MODE - see Sequence of Operations on page 29

PLC lights: Run, I0.2, I0.3 (I0.3 may be on or off during all modes)

START-UP

r COOKING MODE - see Sequence of Operations on page 29

Hood lights on - Activate “Hood Lights” switch or pushbutton
Hood light switch or button should be lit
Fans on - Press “Start Fan” button
Fan pushbutton should be lit
If Continuous Cold Water Spray installed, it will operate with the fans
Appliances on (gas & electric)
PLC lights: Run, I0.2, I0.3, Q0.0, Q0.7

r STOP MODE - see Sequence of Operations on page 29

Fans off - Press “Stop Fan / Start Wash” button
PLC lights: Run, I0.2, I0.3

r WASH MODE - see Sequence of Operations on page 29 & 30

Length of wash (detergent) and delay between sequences may be reduced to a
minimum - see instruction on page 7. RESET when done testing.
Turn PLC mode switch to “Off” and then to “On” to activate new time settings.

52

52

October 2010

Manually activate timer or press “Stop Fan / Start Wash” button
Stop Fan / Start Wash button should be lit
Water should start running immediately
Run pump until bubbles are removed from the suction line (pump may need priming)
PLC lights: Run, I0.2, I0.3 (I0.3 will be on at the start of wash mode), Q0.1
Intermittent PLC lights: Q0.2 thru Q0.6, Q1.0, Q0.0, Q0.7
Record Water Pressure (should be 40-60 psi)
Record Water Temperature (should be 140-180 degrees F)

r STOP MODE - see Sequence of Operations on page 29

At end of wash cycle(s), system returns to stop mode
Hood lights off - De-Activate “Hood Lights” switch or pushbutton
All lights on face of cabinet should be off
PLC lights: Run, I0.2, I0.3

r FIRE MODE - see Sequence of Operations on page 30

Trip fire system or remove power from terminal #6 (topside of terminal 5)
All hoods should have water spraying inside
Fire Mode light should be on
PLC lights: Run, I0.3, Q0.0, Q0.1, Q0.2, Q0.3, Q0.4, Q0.5, Q0.6, Q1.0, Q1.1

r LOW DETERGENT MODE - (optional)

Lift suction valve at the end of the low detergent sensor out of detergent tank
Low Detergent light should be on
Replace suction valve and light should go off

MISCELLANEOUS

r Hood Access

Panels should fit tightly to prevent water spraying out
Adjust fingers on backside of panel for best fit

r Reduced Pressure Backflow Preventers (RPBP)

Reduced Pressure Backflow Preventers (RPBP) will spit small amounts of water when water is
used upstream of the RPBP

rCleaning

Is the hood being properly cleaned? See page 46 - Troubleshooting.

TROUBLESHOOTING

r See IOM Pages 45 - 49

One IOM is provided with every Waterwash hood and each control panel.
It is also available on the Internet at www.Accurex.com in the Kitchen Ventilation Systems
section.

October 2010

53

53

Date Notes

54

54

October 2010

Date Notes

October 2010

55

55

Warranty

Accurex warrants this equipment to be free from defects in material and workmanship for a period of one year from the purchase
date. Any units or parts which prove defective during the warranty period will be replaced at our option when returned to our
factory, transportation prepaid.

As a result of our commitment to continuous research, Accurex reserves the right to change specifications without notice.

Copyright © 2005 Accurex Fan Corp.

IOM Waterwash FS

Rev. 2 October 2010