Accurex Auto Scrubber Operator’s Manual

Document 481488

Auto Scrubber

Auto-Cleaning Hood

Installation, Operation and Maintenance Manual

Please read and save these instructions for future reference. 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 these instructions will result in voiding of the product warranty and may result in personal injury and/or property damage.

Unpacking

Verify that all required parts and the correct quantity of each item have been received. If any items are missing, report shortages to your local representative to arrange for obtaining missing parts. Sometimes it

General Safety Information

Only qualiﬁed personnel should install this system. Personnel should have a clear understanding of these instructions and all applicable local and national building and ﬁre codes. Personnel should be aware of general safety precautions. SMACNA guidelines should be followed for hanging and supporting the hood. If more information is needed, contact a licensed professional engineer before moving forward.

DANGER

Always disconnect power before working on or near a unit. Lock and tag the disconnect switch or breaker to prevent accidental power up.

NOTE

Follow all local electrical, plumbing and safety codes, as well as the National Electrical Code (NEC) and the latest edition of the National Fire Protection Agency Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations, (NFPA 96). Follow the Canadian Electrical Code (CEC) and ULC-S650 if installing this product in Canada.

Receiving

Upon receiving the product, check to ensure all items are accounted for by referencing the delivery receipt or packing list. Inspect each crate or carton for shipping damage before accepting delivery. Alert the carrier of any damage detected. The customer will make a notation of damage (or shortage of items) on the delivery receipt and all copies of the bill of lading which is countersigned by the delivering carrier. If damaged, immediately contact your Accurex Representative. Any physical damage to the unit after acceptance is not the responsibility of Accurex, LLC.

is not possible that all items for the unit be shipped together due to availability of transportation and truck space. Conﬁrmation of shipment(s) must be limited to only items on the bill of lading. Filters are shipped on a separate skid in their original packaging. Do not remove factory packaging or install ﬁlters until just prior to commissioning. Remove all other shipping/packing materials.

Handling

Units are to be rigged and moved by the lifting brackets provided or by the skid when a forklift is used. Location of brackets varies by model and size. Handle in such a manner as to keep from scratching or denting. Damaged ﬁnish may reduce ability of unit to resist corrosion.

Storage

Units are protected against damage during shipment. If the unit cannot be installed and operated immediately, precautions need to be taken to prevent deterioration of the unit during storage. The user assumes responsibility of the unit and accessories while in storage. The manufacturer will not be responsible for damage during storage.

The ideal environment for storage of the hood and accessories is indoors, above grade in a clean, dry atmosphere that is sealed from the elements. While in storage, inspect equipment routinely. If any moisture, dirt or other accumulations are found on the hood or any of the parts, the source should be located and eliminated.

Removing from Storage

As equipment is removed from storage to be installed in their ﬁnal location, it should be protected and maintained as outlined in the Handling section above.

Auto Scrubber 1

Table of Contents

Auto Scrubber Hood Function

General Safety Information . . . . . . . . . . . . . . 1

Receiving/Unpacking/Handling . . . . . . . . . . . 1

Storage/Removing from Storage . . . . . . . . . . 1

Auto Scrubber Hood Function . . . . . . . . . . . . . 2

System Components

Hood. . . . . . . . . . . . . . . . . . . . . . . . . 3

Auto Scrubber Control Panel . . . . . . . . . . . . 3

Backflow Preventer . . . . . . . . . . . . . . . . . 3

User Interface . . . . . . . . . . . . . . . . . . . . 3

Hood Weights . . . . . . . . . . . . . . . . . . . . . 3

Supply Plenum Weights and Dimensions . . . . . . . 4

Prior to Installation . . . . . . . . . . . . . . . . . . . 5

Unpacking . . . . . . . . . . . . . . . . . . . . . . . 5

Hood Installation Overview . . . . . . . . . . . . . 6-7

Filler Panel Installation . . . . . . . . . . . . . . . . . 7

Clearance Reduction Method . . . . . . . . . . . . 7-8

Top Clearance Reduction Options . . . . . . . . . 7

Back and Front Clearance Reduction Options . . . 8

End Clearance Reduction Method . . . . . . . . . 8

Installing Duct Collars

Exhaust Duct Collars . . . . . . . . . . . . . . . . 8

Supply Duct Collars to the Plenum . . . . . . . . . 8

Installing Back Supply Plenum . . . . . . . . . . . . 9

Ductwork

Exhaust/Supply . . . . . . . . . . . . . . . . . . . 9

Continuous Capture Plenum Hoods . . . . . . . . . . 9

Installing Front/Side External Supply Plenums . . . .10

Uni-Strut . . . . . . . . . . . . . . . . . . . . . . .10

Hanger Brackets and Threaded Rod . . . . . . . .10

Supply Duct Collar . . . . . . . . . . . . . . . . .10

Installing Backsplash / Side Splash Panels . . . . . .11

Installing End Skirts . . . . . . . . . . . . . . . . . .12

Plumbing

Connections . . . . . . . . . . . . . . . . . . . . .13

Detergent Tank Installation . . . . . . . . . . . . .13

Detergent Requirements . . . . . . . . . . . . . .13

Preventative Maintenance . . . . . . . . . . . . . .13

Typical Plumbing Connection Layout . . . . . . . .14

Electrical Connections

Wiring . . . . . . . . . . . . . . . . . . . . . .15-16

Typical Electrical Connection Layout . . . . . . . .17

Installing Ceiling Enclosure Panels . . . . . . . . . .18

Double Island Canopy Style Hoods . . . . . . . . . .18

Initial System Start-Up . . . . . . . . . . . . . . . . .19

System Operation

Fan Operation . . . . . . . . . . . . . . . . . . . .19

Hood Light Operation . . . . . . . . . . . . . . . .19

Wash Operation . . . . . . . . . . . . . . . . . . .20

Wash Sequence of Operation . . . . . . . . . . . 21-22

Airflow Testing Procedure . . . . . . . . . . . . . . .23

Additional Wiring Schematics

Ansul® and Amerex® Wiring Plan View . . . . . .24

Maintenance

Filters and Capture Tank . . . . . . . . . . . . . .25

Auto Scrubber Start-Up Checklist . . . . . . . . . . .26

Troubleshooting . . . . . . . . . . . . . . . . . . 27-29

Replacement Parts. . . . . . . . . . . . . . . . . . .30

Maintenance Log. . . . . . . . . . . . . . . . . . . .31

Our Commitment. . . . . . . . . . . . . . . Backcover

Accurex’s Auto Scrubber hoods are designed for three primary functions:

• Capture and contain the efﬂuent produced by the cooking process.

• Remove grease and other contaminants from the airstream with either one or multiple stages of mechanical ﬁlters.

• Wash the ﬁlters and other surfaces within the exhaust plenum to remove contaminants.

NOTE

The wash sequence of the hood is not designed for fire suppression and will not engage in the event of afire.

NOTE

For information on the complete wash cycle, please refer to the Wash Sequence of Operation, pages 21 and 22.

Auto Scrubber2

System Components Hood Weights

Hood

The hood is shipped from the factory pre-piped and ready to install. All wash components within the hood are complete and ready for connection to hot water, sanitary sewer drain and the electrical sources. If the Auto Scrubber Control Panel is mounted on the hood, wiring from the control panel to the hood lights, valves and sensors is completed by Accurex. All ﬁeld plumbing and wiring must conform to plumbing and electrical codes.

Auto Scrubber Control Panel (ASCP)

The control cabinet contains the water and electrical components, including the Programmable Logic Controller (PLC), that controls the wash sequencing and operations. The control cabinet also includes the detergent reservoir, detergent pump, and other water piping.

NOTE

Filters are shipped loose with the hood and installed in the field. To install the filters, perform the sequence of steps outlined on page 25 in reverse.

Backﬂow Preventer

A backﬂow preventer will be shipped loose with the ASCP and will need to be installed in-line with the hot water supply to the ASCP to prevent detergent from back-feeding into the building water supply. Plumbing instructions begin on page 13.

Hood Weights

Hood Width

inches (cm)

(121.92)

(129.54)

(137.16)

(144.78)

(152.40)

(160.02)

(167.64)

(175.26)

(182.88)

4 feet

lbs. (kg)

244

(110.7)

250

(113.4)

256

(116.1)

262

(118.8)

268

(121.6)

274

(124.3)

280

(127.0)

286

(129.7)

292

(132.4)

Length

8 feet

lbs. (kg)

398

(135.2)

404

(183.3)

410

(186.0)

416

(188.7)

422

(191.4)

428

(194.1)

434

(196.9)

440

(199.6)

446

(202.3)

12 feet

lbs. (kg)

553

(250.8)

559

(253.6)

565

(256.3)

571

(259.0)

577

(261.7)

583

(264.4)

594

(269.4)

600

(272.2)

606

(274.9)

CAUTION

To ensure proper structural support, all hanger brackets must be used for hanging the hood.

16 feet

lbs. (kg)

707

(320.7)

713

(323.4)

719

(326.1)

725

(328.9)

731

(331.6)

737

(334.3)

743

(337.0)

749

(339.7)

755

(342.5)

User Interface

The user interface will be either a keypad with LCD screen or touch screen. It can be mounted on the Auto Scrubber control cabinet, hood or shipped loose for remote mounting. It will provide a WASH button (WASH ON/OFF with touch screen), and a means of turning on/off hood fans and lights, if applicable. It also includes system alarm notiﬁcations to alert of any faults on the system, such as a low detergent alarm.

SYSTEM FAULT

NAV

Keypad Touch Screen

NOTE

For detailed information on the Auto Scrubber Control Panel (ASCP), please refer to the Accurex website, www.accurex.com

Auto Scrubber 3

Supply Plenum Weights and Dimensions

External Supply

Plenum Type

Air Curtain Supply (ASP)

Split Air Curtain Supply (Split ASP)

lbs/ft kg/m in. mm in. mm ft. m

Refer to Air Curtain

Supply Plenum

Weight Table

15.5 23.07 24 609.6 10 254.0 3 to 16 .91 to 4.88

Weight Width Height Length per section

Refer Air Curtain

Supply Plenum

Weight Table

10 to 24 254.0 to 609.6 10 254.0 3 to 16 .91 to 4.88

Back Supply (BSP) 35.0 52.09 6 152.4 Variable Variable 3 to 16 .91 to 4.88

Horizontal Supply (HSP) 14.0 20.83 12 304.8 18 457.2 3 to 16 .91 to 4.88

Variable Supply (VSP) 16.0 23.81 12 304.8 18 457.2 3 to 16 .91 to 4.88

Weight

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Air Curtain Supply Plenum Width (inches)

lbs/ft 8.3 8.6 8.9 9.2 9.5 9.8 10.1 10.4 10.7 11.1 11.3 11.6 11.9 12.2 12.5

kg/m 12.35 12.80 13.24 13.69 14.14 14.58 15.03 15.48 15.92 16.52 16.82 17.26 17.71 18.16 18.60

Auto Scrubber4

Prior to Installation

Unpacking

Prior to installation, check with the Authorities Having Jurisdiction (AHJ) on clearance requirements to structures surrounding the hood and other equipment. Verify there is enough space to safely lift the hood up into its operating position and enough clearance around the hood for components like ﬁre system connections, hood lights, hood control components, plumbing connections, etc. Consider access for servicing the equipment and the different components when locating the hood.

The UL label located on the end panel on the inside of the hood will provide pertinent information regarding the hood installation. Information includes:

• Allowable cooking surface temperatures of the cooking equipment

• Front and side overhang requirements

• Minimum exhaust airﬂow requirements

• Hood lights load information and restrictions

• Filter information

• Fire damper fusible link replacement information, if applicable

Carefully remove the top of the crate and set aside all accessories in the crate such as backsplash panels, control packages, and boxes with loose parts. When removing the hood from the crate, place protective material on the ﬂoor next to the crate to avoid damaging the hood.

Lift the hood only by utilizing the hanger brackets. Make sure the hood weight is evenly distributed. Slowly lift the hood out of the crate and place on the protective material.

NOTE

If using straps, the straps should not interfere with plumbing on the top of the hood in an effort to prevent internal piping damage which could cause future leaks.

Top of Hood

Pallet

Protective Material

Auto Scrubber 5

Hood Installation Overview

It is recommended that the protective plastic sheeting remain on the hood until fully installed to better protect the product from scratching and marking. Once removed, use stainless steel polish, such as BlueAway or equivalent, to clean the hood and/or remove marks or discoloration. Be sure to wipe with the grain and not against it.

1. If the hood is provided with ﬁller panels, shipped loose, install them now. See page 7, Filler Panel Installation. Filler panels may be integral to the hood, which requires no additional installation.

2. If the hood is equipped with Clearance Reduction Methods, refer to pages 7 and 8 for special considerations with hanging the hood.

3. If the hood is provided with hood/duct sensors or thermostats that were shipped loose, install them now. See the Installation and Operations guide provided with the control panel.

4. If the hood was provided with either exhaust collars or supply collars that have shipped loose, it is recommended that the exhaust and supply openings are cut and collars are attached now, prior to hanging the hood. See Installing Duct Collars on page 8.

5 If the hood is provided with a back supply plenum

(BSP) install it now. See page 9, Installing the Back Supply Plenum.

6. If possible, connect (weld) exhaust duct to the hood while on the ﬂoor, unless it prohibits the hood from being raised into place. For information on ductwork, see page 9, Ductwork.

7. At this point, drill holes in the building structural support system or utilize uni-strut to match up with the hanger bracket holes. Then slowly and evenly raise the hood into position and insert 1/2-inch (12.7mm) diameter threaded rod (provided by others) between the hanger brackets and structure.

The hood hanging height requirements are given on

the UL label. Typical canopy hood hanging height will be 80inches (198.12cm) off the ﬁnished ﬂoor.

NOTE

If the hood is supplied with ceiling enclosure panels, the height of the enclosures will typically be the distance from the ceiling to the top of the hood. Use this dimension to find the hood’s hanging height off of the floor.

For questions regarding the supporting structure and its integrity, either the contractor or structural engineer needs to be consulted.

NOTE

All hanger brackets MUST be used and the hood must be properly supported while lifting to prevent damage or distortion to the hood.

NOTE

Ensure the hood is hung evenly to prevent drainage problems. Provide adequate support so that the hood does not move in a manner that is unacceptable to the Authorities Having Jurisdiction (AHJ).

WARNING

When mounting the hood or any components against the hood, never puncture or drill into the canopy unless otherwise instructed in this manual. Doing so will void the hood listing and warranty.

8. If the hood was provided in sections with the continuous capture option, once each hood section is hung, install this option now. See page 9, Continuous Capture Plenum Hoods.

9. If the hood was provided with any front or side external supply plenums (other than the back supply plenum), install these now. See page 10, Installing Front/Side External Supply Plenums.

10. Install the remainder of both the exhaust and supply ductwork. For further guidelines see page 9, Ductwork.

11. If the hood is provided with any backsplash/ sidesplash panels, install them now. See page 11, Installing Backsplash Panels.

12. If the hood is provided with any end skirts, install them now. See page 12, Installing End Skirts.

13. This is a Type I hood and it requires a ﬁre suppression system. Once the hood(s) and ductwork are fully installed, appliance(s) are in place and walls are complete, the ﬁre system should be completed.

If the hood is provided with a full factory-

coordinated ﬁre suppression system installation, the certiﬁed ﬁre system installer should be contacted at this time to complete the ﬁnal hookups, testing and system certiﬁcation based upon manufacturer’s speciﬁcation and local ﬁre codes.

If the hood is equipped with pre-piping only, and/

or does not include ﬁre suppression, it is the responsibility of a certiﬁed ﬁre system installer to install, test and certify the system based upon manufacturer’s speciﬁcation and local ﬁre codes.

14. The Auto Scrubber Control Panel (ASCP), if shipped loose, will need to be installed at this time. Once mounted, plumbing and electrical wiring will need to be completed by the jobsite plumber and electrician. Typical site wiring responsibilities include wiring hood temperature sensors, hood lights, hood sequencing valves, ﬁre suppression micro-switches, and fans (if applicable) to the control panel. Hood plumbing details are given on page 13-14, and hood electrical wiring details are provided on page 15-17.

Auto Scrubber6

Hood Installation Overview, continued

Clearance Reduction Methods

15. If the hood is provided with enclosure panels, install them now. See page 18, Installing Enclosure Panels.

16. Install the rest of the hood accessories provided. This may include grease ﬁlters or condensate hood bafﬂes, grease cups, light bulbs (provided by others unless LED tube style), light globes, and trim strips.

Filler Panel Installation

1. Uncrate the hood and lay it on the ﬂoor with

protective material between the hood and the ﬂoor.

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.

HOOD

Clearance reduction methods have been evaluated and tested and are listed by UL (Underwriters Laboratory). The method of test was derived from the UL 710 test standard.

The hood may be installed with zero clearance to combustible materials if constructed in the following manner.

1. One inch (2.54 cm) thick layer of insulation of Owens Corning

Type 475, Johns Manville Type 475, IIG® MinWool-1200® Flexible Batt, or Knauf Insulation Type EI 475.

2. Insulation must be held securely in place. Pins that are welded or secured with an adhesive may be used.

3. A backsplash panel must be attached to the wall (insulated or uninsulated).

To comply with the UL Listing, the cooking appliances must be as follows:

• Maximum surface temperature is 700°F (371°C)

• Appliances are located at least 3 in. (7.62 cm) from the rear wall

• Appliances are at least 40 in. (101.6 cm) below the bottom front edge of the hood

The hood may be installed with 3 in. (7.62 cm) clearance to limited combustible materials per NFPA 96 if constructed in one of the following methods:

• 3 in. (7.62 cm) rear uninsulated stand-off

• 3 in. (7.62 cm) top enclosure panel system

• 3 in. (7.62 cm) end uninsulated stand-off

Top Clearance Reduction Options

One inch (2.54 cm) layer of insulation installed on top of the hood (optional) meets zero inch requirements for clearance to combustible surfaces as outlined under the clearance reductions methods.

HOOD

TACK-WELDED TO HOOD BACK

5/16 IN. X 3/4 IN. BOLTS WITH WASHERS & NUTS

RIGHT FILLER PANEL

BOTTOM FILLER PANEL

4. To allow for ease of cleaning, caulk the external seams with NSF Approved silicone caulk (GE SCS1009, or its equivalent). The caulk is not provided.

Three inches (7.62cm) uninsulated airspace installed on top of hood (optional) meets NFPA 96 requirements for clearance to limited combustible surfaces.

Auto Scrubber 7

Back and Front Clearance Reduction Options

One inch (2.54 cm) layer of insulation in 3 in. (7.62cm) back stand-off meets zero inch requirements for clearance to combustible surfaces as outlined under the clearance reduction methods.

Three inches (7.62 cm) uninsulated back stand-off meets NFPA 96 requirements for clearance to limited combustible surfaces.

One inch (2.54 cm) layer of insulation factory-installed on the front of the hood (optional) meets zero inch requirements for clearance to combustible surfaces.

Installing Duct Collars

Exhaust Duct Collars

1. The exhaust duct connection needs to be located within 48 in. (121.92 cm) from the center of the hood length to the center of the duct connection and within shaded area as shown.

Top View of the Hood

8 in.

Hanger Bracket

Exhaust Plenum

Duct cut out area

8 in.

14 in.

3 in.

Hood Width

End Clearance Reduction Options

One inch (2.54 cm) layer of insulation factory-installed on the end of the hood (optional) meets zero inch requirements for clearance to combustible surfaces under the clearance reduction methods.

Three inches (7.62 cm) uninsulated airspace installed on end of hood (optional). Meets NFPA 96 requirements for clearance to limited combustible surfaces.

Hood Length

Front of hood

NOTE

An 8x8x4-inch enclosure and sequencing solenoid valves will be mounted on top of the Auto Scrubber hood near the right or left-hand side. Avoid interference with these items by keeping the exhaust collars 20 inches from the end of the hood where these components are mounted.

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.

Supply Duct Collars to the Plenum

Place the duct collar(s) over the opening, fastening with tack-welds at 1 to 2 in. (2.54 to 5.08 cm) intervals, or sheet metal screws at 3 to 6 in. (7.62 to 15.24 cm) intervals.

3 in.

Auto Scrubber8

Installing the Back Supply Plenum

BOLT OR WELD

HOOD TOP

HOOD END

SUPPORT ANGLES

CAULK

BOLT

U-CLIP

HOOD

ACORN NUT

2. RAIS AND

3. FAST

4. FAST

5. CAU

& CAP

1. REM

HOOD FRONT

REMOVE SUPPORT ANGLES ON THE OPEN END PANEL

Ductwork

Install the Supply Duct Collar

1. Find the center of the back supply plenum.

2. If the back supply plenum is to have one opening, cut the opening such that it is centered at L /2 from the plenum end. (Fig.1)

3. If the back supply plenum is to have two openings, cut openings such that they are centered at L /4 from each end of the plenum. (Fig. 2)

4. Place the duct

L/4

collar(s) over the opening(s), fastening with screws or tack-welds every 4 to 6 in. (10.16 to

15.24cm). (Fig. 3)

Hang the Plenum

Fig. 2

5. Hang the back supply plenum from the ceiling.

The back supply plenum

needs to be mounted 31.25in. (79.375 cm) above the ﬁnished ﬂoor. This is measured from the lowest rear edge of the back supply plenum to the ﬁnished ﬂoor. (Fig. 4)

Hang using threaded rod

placed through the hanger brackets.

6. Fasten the back supply to the wall, going through the lower back supply wall.

L (MODULE LENGTH)

L/2

Fig. 1

L (MODULE LENGTH)

L/2

Fig. 3

L/2

L/4

Exhaust - 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 1.37 mm (0.054 in.) (No. 16 MSG) in thickness, or stainless steel not less than

1.09 mm (0.043 in.) (No. 18 MSG) in thickness. 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 now.

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 but should not exceed 18 in. (45.72 cm).

For proper installation of duct collars when they are shipped unattached, see page 8.

Continuous Capture Plenum Hoods

1. Remove the support angles provided for support during shipping on the open end panels. Install and level both hoods.

FASTENERS HOLDING THE

BACKSUPPLY TO THE WALL

31.25 INCH CRITICAL

Fig. 4

DIMENSION

• These fasteners are to help maintain the location of the back supply, and are not intended to hold the weight of the back supply unit.

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

2. After leveling, secure the hoods together by tackwelding and/or bolting the angles that are located at the top of the hoods along its width (Fig. 5).

3. Next, fasten the hoods together at its inside plenum proﬁle using u-clips and bolts (Fig.6). Caulk this joint with NSF Approved silicone caulk (GE SCS1009 or its equivalent). The caulk is not provided.

Fig. 5

Fig. 6

Auto Scrubber 9

Installing Front/Side External Supply Plenums

Using Uni-strut

THREADED ROD

SUPPLIED BY OTHERS

UNI-STRUT (U-CHANNEL)

SUPPLIED BY OTHERS

END VIEW

HOOD

The uni-strut (supplied by others) supporting the hood may be cantilevered over the end of the hood. Utilizing the external supply plenum’s hanger brackets, securely fasten to the uni-strut.

THREADED

ROD

UNI-STRUT

(U-CHANNEL)

EXTERNAL

SUPPLY PLENUM

1. Insert 1/2 in. (12.7 mm) diameter threaded rod (by others) into hanger brackets on the external supply plenum top. Raise and hang the external supply plenum from adequate roof or ceiling supports.

NOTE

Ensure the external supply plenum is installed flush with the hood front and is plumb and level by adjusting the threaded rod(s). There should be no gap between the bottom of the external supply plenum and the hood after installation and adjustments are completed.

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

NOTE

After hanging, secure the external supply plenum to the hood (or to another external supply plenum) using the supplied turnbuckle(s). Use caution tensioning the turnbuckle. Too much tension may cause the bottom of the external supply plenum to pull away from the hood or cause the face of the hood to become deformed.

Air Curtain Supply (ASP)

Horizontal Supply Plenum (HSP)

Variable Supply Plenum (VSP)

Mounted with uni-strut and threaded rod

When using uni-strut (supplied by others), it must be bolted to the hood and external supply plenum hanger brackets.

NOTE

The uni-strut needs to be the full length of the hood and the external supply plenum.

Using Hanger Brackets and Threaded Rod

Air Curtain

Supply Plenum (ASP)

Horizontal Supply Plenum (HSP)

Variable Supply Plenum (VSP)

TURNBUCKLE

HOOD HANGER

BRACKET

EXTERNAL

SUPPLY PLENUM

HANGER BRACKET

HOOD

EXTERNAL

SUPPLY

PLENUM

3. It is recommended that caulk be applied at the mating seams and surfaces of the external supply plenum, the hood, and the wall. If the external supply plenum is next to a wall, you will need to caulk around the surface next to the wall. Caulk the joints with NSF Approved silicone caulk (GE SCS1009, or its equivalent). The caulk is not provided.

Installing the Supply Duct Collar to thePlenum

Place the duct collar(s) over the opening, fastening with tack-welds at 1 to 2 in. (2.54 to 5.08 cm) intervals, or sheet metal screws at 3 to 6 in. (7.62 to 15.24 cm) intervals.

Auto Scrubber10

Installing Backsplash/Sidesplash Panels

Flat Backsplash/Sidesplash Panel

Material: Stainless

NOTE

• Panel length up to 47.25 inches (1200.15mm) wide ship in one piece; panel lengths over 47.25inches (1200.15mm) ship in multiple pieces when panel height is <66 inches (1674.4 mm) or >80inches (2032mm).

• Panel length up to 48 inches (1219.2 mm) wide ship in one piece; panel lengths over 48inches (1219.2mm) ship in multiple pieces when panel height is ≥66 inches (1676.4 mm) or ≤80 inches (2032 mm).

Insulated Backsplash/Sidesplash Panel

Material: Stainless Insulation: 1 in. (25.4 mm)

Panels up to 45 in. (1143 mm) wide ship in one piece; over 45 in. (1143 mm) in multiple pieces.

HOOD END PANEL

1 IN. (25.4 MM)

WALL

HEIGHT

LENGTH

NOTE

HOOD FRONT PANEL

1. After hood is hung into position, slide the ﬂat ﬂange of the backsplash/sidesplash panel behind the back/side of the hood. If the hood is provided with ﬂat backsplash/sidesplash panels, divider bars will be provided. Install divider bars between panels as shown in the ﬂat backsplash/sidesplash panel section view.

2. After the panels and dividers have been positioned, drill holes in the panel and fasten to the wall. (Fasteners provided by others). The holes should be spaced to adequately secure the panel to the wall.

3. Caulk the joints between the hood and the panel with NSF Approved silicone caulk (GE SCS1009 or its equivalent). Caulk provided by others.

4. Caulk the joint between the panels when multiple insulated panels are required with NSF Approved (GE SCS1009 or its equivalent). Caulk provided by others.

SLIDE FLANGE BEHIND BACK OF THE HOOD

BACKSPLASH PANEL

SECTION VIEW OF BACKSPLASH PANEL OVERLAP

Auto Scrubber 11

Installing End Skirts

1. After the hood is hung in position, line up the top of the end skirt with 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 provided by others).

4. Caulk the internal joint formed by the end skirt and the hood end panel with NSF Approved silicone caulk (GE SCS1009 or its equivalent). The caulk is not provided.

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

HOLE DRILLED BY INSTALLER

1/4 INCH BOLT AND CAP NUT SUPPLIED BY MANUFACTURER

FULL END SKIRT

ATTACH TO WALL

FASTENERS BY OTHERS

HEMMED EDGE

Auto Scrubber12

Plumbing Connections

TOP VIEW OF AUTO SCRUBBER CONTROL PANEL (ASCP)

FRONT VIEW OF AUTO SCRUBBER CONTROL PANEL (ASCP)

1. Electrical Control Cabinet 5. Hot Water Inlet Connection

2. Detergent Pump 6. Cold Water Outlet Connection to Hood

3. Detergent Tank 7. Cold Water Inlet Connection

4. Hot Water Outlet Connection to Hood 8. Inlet Valve

1. Install the factory

FROM 1 INCH HOT WATER SUPPLY

provided backﬂow preventer (shipped loose) and drain

TO ASCP 1 INCH HOT WATER INLET

connection per local codes.

Backﬂow Preventer

2. Bring 1-inch hot water supply line to the backﬂow preventer.

3. Plumb 1-inch line from outlet of backﬂow preventer to the hot water inlet in the control cabinet.

4. If the cabinet is remote mounted, connect the hot water outlet on the controls cabinet to the hot water inlet on the top of the hood.

5. If system is conﬁgured for cold water mist, bring

0.75-inch water piping to the cold water mist inlet in the control cabinet.

6. If the cabinet is remote mounted and the system is conﬁgured for cold water mist, connect the cold water mist outlet on the controls cabinet to each hood with a cold water mist solenoid valve

7. Plumb 2-inch drain on each hood to grease trap (ﬂoor).

NOTE

• Hot water temperature should be 140°F.

• While the hood is washing, water pressure in the control panel should be between 40 and 70 PSI.

• Cold mist water pressure should be between 20 and 40 PSI.

Detergent Tank Installation

The detergent tank is located in the plumbing section of the ASCP. The tank provided can hold up to

2.5gallons of detergent. It will need to be checked periodically depending on detergent use and ﬁlled with the recommended chemical detergent. The tank is also equipped with a ﬂoat that will trigger an alarm to warn the user when detergent is low.

Steps for removal and installation of the detergent tank are as follows:

Removal:

1. Disconnect the two ﬂoat switch wires at the quick connect electrical ﬁttings.

2. Remove the 1/4-inch detergent line that enters the tank thru the screw on cap.

3. Lift out the detergent tank from the utility cabinet.

4. Unscrew the 63 mm cap from the tank; this will remove the ﬂoat assembly.

5. Fill the tank with the approved detergent.

Install:

1. Install the 63 mm cap and ﬂoat assembly into the detergent tank.

2. Lift the detergent tank back into the utility cabinet.

3. Install the 1/4-inch detergent line thru the hole in the 63 mm cap.

4. Connect the two ﬂoat switch wires at the quick connect electrical ﬁttings.

Detergent Requirements

Detergent model X-701 manufactured by ZEP, Inc., is recommended by Accurex for use in the wash system. This product is biodegradable, non-caustic, and safe for kitchen staff to use. If X-701 detergent is not used, the cleanliness of the exhaust plenum and ﬁlters cannot beguaranteed.

NOTE

• X-701 is manufactured by ZEP, Inc., Atlanta, GA, USA. For details and ordering information, call 1-800-371-6858.

• If washed once a day, the 2.5 gallon detergent tank will last approximately 24 to 30 days depending on ﬁlter type.

Preventative Maintenance

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

• Keep detergent tank ﬁlled.

• 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.

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

Auto Scrubber 13

Typical Plumbing Connection Layout

Building

Water

Supply

Backﬂow Preventer

Provided by Accurex; ﬁeld installed

Drain required for backﬂow preventer

Plumbing connections made here

BAA

First Auto

Scrubber Hood

Auto Scrubber Control Panel

(ASCP)

Plumbing Key

Hot Water Piping Cold Water Piping

HOT WATER CONNECTIONS:

A 1-inch hot water supply from building to Backﬂow Preventer

B 1-inch hot water piping from Backﬂow Preventer to control cabinet

C 1-inch hot water piping from control cabinet to hood(s)

COLD WATER CONNECTIONS, optional with continuous cold water mist

D 3/4-inch cold water supply from building to control cabinet

E 3/4 inch cold water piping from control cabinet to hood(s)

DRAIN CONNECTIONS FROM AUTO SCRUBBER HOOD(S):

F 2-inch male NPT connection to building drain with grease trap (one per hood section)

Each additional

Auto Scrubber Hood

(if applicable)

Auto Scrubber14

Electrical Connections

NOTE

All wiring of electrical equipment must be done to meet NEC and local codes.

NOTE

It is recommended that shielded wire be used for all low voltage connections (24V or less) to prevent signal interference with other high voltage circuits.

WARNING

All 115 VAC field wiring (or higher) must be high temperature rated and must be routed through hard or flex conduit. All low voltage field wiring should be plenum rated if not routed through conduit. All field wiring should not come in contact with the surface of the hood.

This section will provide some ﬁeld wiring information for connections directly to the hood. For all other wiring connection requirements for the Auto Scrubber Control Panel (ASCP), please refer to both the Auto Scrubber Control Panel Installation, Operation and Maintenance manual and the job speciﬁc wiring diagram located on the inside door of the control cabinet.

Hood Lights

If the hood is provided with lights, a junction box will be located on top of the hood for ﬁeld connections. Use minimum 14 AWG copper wire. Light bulbs will not be provided (unless equipped with LED tube style ﬁxtures). For incandescent or compact ﬁxtures, standard light bulbs up to 100 watts may be used.

• 115 VAC, power for hood lights, one per light circuit (Terminals H1, N1 | H2, N2 | H3, N3 | H4, N4)

• 115 VAC, power to lights, one per light circuit (Terminals B1, W1 | B2, W2 | B3, W3 | B4, W4)

EACH CANOPY LIGHTING CIRCUIT MUST NOT EXCEED 15A TOTAL CURRENT

LIGHT CIRCUIT 1: 115 VAC, 15 AMPS FROM BREAKER

R__

H1 W1B1

HOOD LIGHT

RELAY 1

HOOD LIGHT(S)

WH 14GABK 14GA BK 14GA

Keypad - if equipped

• Connect factory provided cable from back of keypad to CAREL® PCO5+ controller (Terminal J10)

CONNECT FACTORY PROVIDED RJ25 CABLE

TO J10 ON PCO5+ AND BACK OF KEYPAD

PCO5+ J10 KEYPAD

35 Foot Cable Provided

75 or 150 Foot Cable is Optional

Touch Screen - if equipped

Power Wiring

• Connect factory provided 2-wire cable from Vari-Flow (Terminals TS24, TSC) to touch screen (Terminals G, GO)

Control Wiring

• Connect factory provided 3-wire cable from Vari-Flow (Terminals -, +, GND) to touch screen (Terminals -, +, GND)

POWER WIRING

TOUCH

TS24

TSC

SCREEN

CONTROL WIRING

TOUCH

GND

J25 (BMS2)

SCREEN

GND

LIGHT CIRCUIT 2: 115 VAC, 15 AMPS FROM BREAKER

R__

BK 14GA

H2 B2 N2W2

LIGHT CIRCUIT 3: 115 VAC, 15 AMPS FROM BREAKER

BK 14GA BK 14GA

H3 B3 N3W3

LIGHT CIRCUIT 4: 115 VAC, 15 AMPS FROM BREAKER

BK 14GA BK 14GA

H4 B4 N4W4

HOOD LIGHT

RELAY 2

R__

HOOD LIGHT

RELAY 3

R__

HOOD LIGHT

RELAY 4

WH 14GABK 14GA

HOOD LIGHT(S)

WH 14GA

HOOD LIGHT(S)

WH 14GA

HOOD LIGHT(S)

CAUTION

For multiple hood systems that have more than 14 lights total, incandescent or fluorescent, the hood lights must be wired to multiple circuits. Each circuit must have less than 14 lights total.

Auto Scrubber 15

Electrical Connections, continued

Solenoids and Temperature Sensors

Each Auto Scrubber hood will include an 8x8x4 enclosure factory wired to the hood solenoids and sensors. If the Auto Scrubber Control Panel (ASCP) is not mounted on the hood, the ﬁeld will need to wire from the 8x8x4 enclosure back to the ASCP. The hood sensors and solenoids are low voltage, therefore, 18gauge stranded wire is recommended. The two wires of each hood sensor are not polarity sensitive.

The wiring diagram provided with the ASCP will display a table showing which sensors/solenoids connect to each hood. If more than one hood is being controlled, be sure that the appropriate sensor/solenoid is wired to the appropriate terminals as depicted on this diagram.

Wash Hood Solenoids

• Wire between control panel terminal WO-_A and hood j-box terminal WO-_A

• Wire between control panel terminal WO-_B and hood j-box terminal WO-_B

• Wire between control panel terminal 24C and hood j-box terminal 24C

• Wire between control panel terminal GND and hood j-box terminal GND

Wash Hood Temp Sensor 1 – if equipped

• Wire between control panel terminal T_-A and hood j-box terminal T_-A

• Wire between control panel terminal T_-B and hood j-box terminal T_-B

Wash Hood Temp Sensor 2 – if equipped

• Wire between control panel terminal T_-A and hood j-box terminal T_-A

• Wire between control panel terminal T_-B and hood j-box terminal T_-B

MAIN

CONTROL

WO-_A

WO-_B

J-BOX

HOOD #_

WO-_A

WO-_B

WASH SOL _

SV_

WASH SOL _

SV_

NOTE

The resistive temperature detectors (RTD), or sensor probes, should not be exposed to direct flame. The RTD’s are rated up to 250°F.

CAUTION

Exposing the sensor to direct flame may render the sensor inoperable and will void the warranty.

24C

GND

T_-A

T_-B

T_-A

T_-B

Auto Scrubber16

24C

GND

T_-A

T_-B

T_-A

T_-B

Typical Electrical Connection Layout

Electrical connections made in here

Building

Breaker

Panel

(by others)

Wiring Key

High Voltage (115V) Low Voltage (24V)

Auto Scrubber Control Panel

(ASCP)

SYSTEM FAULT

NAV

User Interface

(Keypad or Touch Screen)

G H

First Auto

Scrubber Hood

G H

Each additional

Auto Scrubber Hood

(if applicable)

Exhaust Fan(s)

NOTE: Exhaust fan wiring will

depend on type of exhaust fan

A 115/1, 15A Circuit (Control Power) B 115/1, 15A Circuit (Light Power) C Input Power for Exhaust Fan(s) (if applicable) D Input Power for Supply Fan(s) (if applicable) E Input Power for Supply Fan(s) Controls (if applicable) F Control Wiring to User Interface (Keypad or Touch Screen)

Cable(s) provided by Accurex G Power to Hood Lights H Control Wiring to Wash Solenoids I Control Wiring to Temperature Sensors J Output Power to Exhaust Fan(s) (if applicable) K Output Power to Supply Fan(s) (if applicable) L Control Wiring to Supply Fan(s) (if applicable)

KLK L

Supply Fan

NOTE: Supply fan wiring will

depend on type of supply fan

Auto Scrubber 17

DOUBLE ISLAND CLIP

Installing Ceiling Enclosure Panels

Double Island Canopy Style Hoods

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

1. Position the end enclosure panels on the hood, and

clamp into place with clamps provided or tack-weld the panels into place.

2. Fasten the end enclosure panels to the wall; method

depends on wall construction. (Fasteners provided by others).

If the hood is a double island, bolt the end enclosure

panels together. (Fasteners provided by others).

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in. (10.16 cm) 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 SCS1009, or its equivalent). The caulk is not provided.

NOTE

Before hanging the hoods, please verify the hood marks to ensure 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 for single island canopy hoods; install and level both hoods. After leveling, secure the hoods together by tack-welding and/or bolting the rear mounting brackets together. Double island hoods may also be provided with a U-Channel to seal the seam between the two hoods.

Installing U-Channel Strip

1. After the hood is hung in position and leveled, apply caulk to the inside edge of the double island clip.

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 SCS1009 or its equivalent). The caulk is not provided.

NOTE

Installation instructions may not be applicable for concrete ceilings.

BOLT PANELS TOGETHER WITH 5/16 INCH BOLTS SUPPLIED BY MANUFACTURER

CLAMP PANELS TO HOOD STANDING SEAM WITH HARDWARE SUPPLIED BY MANUFACTURER

END ENSLOSURE PANEL

HOOD TOP

FRONT ENCLOSURE PANEL

END ENSLOSURE PANEL

ITEM-1B

ITEM-1A

HOOD FRONT

HOOD-1A

HOOD-1B

SILICONE CAULK (GE SCS1009)

DOUBLE ISLAND CLIP

ATTACH TO WALL FASTENERS BY OTHERS

HOOD BACK

Auto Scrubber18

Initial System Start-Up

System Operation

1. Clean the control cabinet of any debris that may have entered the cabinet during installation.

2. Add detergent to the detergent tank in the cabinet.

3. Turn power on to the hood and control cabinet and fans (if applicable).

4. Check electrical power is correct for hood controls, lights (if applicable) and fans (if applicable).

5. Conﬁrm the CAREL controller is operational; display should be illuminated.

6. If the system is controlling fans, turn the fans on via the user interface. Check fan rotation and conﬁrm exhaust and supply air volumes are correct (per design). After this has been completed, turn the fans off.

7. Turn on water supply.

8. Prime the detergent pump. On the CAREL controller, navigate to Service > Wash Settings > “Prime Detergent Pump” menu screen. Changing “OFF” to “ON” will start the detergent pump.

Monitor the detergent

line and press the ESC key once the detergent reaches the hot water line. This will stop the detergent pump.

Prime Detergent Pump

Prime the detergent pump? OFF

Change NO to YES to start detergent pump.

9. If the ﬁlter access doors are not installed, install them now. Instructions for installing ﬁlters and access doors can be found on page 25.

NOTE

Ensure the access doors are installed before starting any wash cycles. Running a wash cycle without the doors in place will result in water spraying on the cooking line-up/area below the hood.

10. Run a test wash. On the CAREL controller, navigate to Service > Wash Settings > Hood Test Wash Setup menu screen. Adjust the times as necessary on the screen; change NO to YES. A test wash will start.

While the hood is washing, ensure water is not leaking through the edges of the access doors or anywhere else in the exhaust plenum. Ensure the grease drain and trap are not plugged, or kitchen ﬂooding may occur.

Water pressure while the hood is washing should be between 40 and 70 PSI. Monitor the inlet pressure and temperature gauge in the ASCP through one wash cycle.

At any time, the test wash can be aborted by pressing the ESC key.

Hood Test Wash Setup

Seq Time: 30s Seq Det Time: 10s Drip Dry Time: 10s Fan Dry Time: 15s

Start Test Wash? NO

NOTE

The information given in this section provides basic instructions for operating the user interface provided with the Auto Scrubber Control Panel (ASCP). For more detailed information regarding the operation of the control panel, as well as all electrical and plumbing requirements, please reference the Auto Scrubber control panel Installation, Maintenance and Operation Manual. This manual will ship with the control package and can also be found on accurex.com

Fan Operation (if equipped)

If the hood system is equipped with fan control, start/ stop the fans exhausting and supplying the hoods from the user interface.

KEYPAD - Press the button next to the “ALL HOODS” text on the keypad to start/stop all of the hoods. If the keypad has a button labeled “HOODS”, pressing this button will navigate to a set of screens where the user can individually start/stop different fans.

TOUCH SCREEN - Press the “ALL HOODS ON/OFF” icon on the touch screen to start/stop all of the hoods. If the touch screen has a icon labeled “INDIVIDUAL HOOD SYSTEMS ON/OFF”, pressing this will navigate to a screen where the user can individually start/stop different fans.

Hood Light Operation (if equipped)

If the hood system is equipped with light control, turn on/off the hood lights from the user interface.

KEYPAD - Press the button next to “ALL LIGHTS” text on the keypad to will turn on/off all hood lights. If the keypad has a button labeled “LIGHTS”, pressing this button will navigate to a set of screens where the user can individually start/stop different hood light circuits.

TOUCH SCREEN - Press the “ALL LIGHTS ON/OFF” icon on the touch screen to turn on/off all hood lights. If the touch screen has a icon labeled “INDIVIDUAL LIGHT ON/OFF”, pressing this will navigate to a screen where the user can individually turn on/off different hood light circuits.

Auto Scrubber 19

Wash Operation (if equipped)

A hood wash can be initiated through a number of different options.

Wash by Button (Factory default = ON): A wash can be initiated through pressing either the “WASH” button (if equipped with a keypad) or by pressing “WASH ON/ OFF” icon (if equipped with a touch screen).

Wash by Digital Input (Factory default = OFF): A wash can be initiated through engaging a conﬁgured digital input on controller. For the correct terminals to wire this digital input, please reference the Auto Scrubber Control Panel wiring diagram.

Wash by BMS Interface (Factory default = OFF): A wash can be initiated through engaging a BMS read/ write point. Point lists can be found in the Auto Scrubber Control Panel IOM.

Wash by Scheduler (Factory default = OFF): A wash can be initiated daily at a speciﬁc time. If this option is enabled, this time can be ﬁeld adjusted within the controller and touch screen, if equipped.

Wash by Auto Start (Factory default = ON): Each individual hood can be washed after that hood’s fan(s) has been running for a pre-determined time (factory default is 8 hours). This time setting and the maximum allowable auto start washes can be ﬁeld adjusted within the controller and touch screen, if equipped.

A fan exhausting an Auto Scrubber hood cannot be controlled by the user (turned on and off) while that Auto Scrubber hood is washing. If multiple Auto Scrubber hoods are employed, a fan linked to an Auto Scrubber hood which is not currently washing can be controlled by the user (turned on and off) as normal.

NOTE

Duct sumps may be controlled by this Auto Scrubber system. A duct sump is a grease reservoir installed in low points of grease duct which also requires routine wash downs.

When duct sumps are washing, fans cannot run, unless:

• A kitchen ﬁre is detected

• A sensor linked to any Auto Scrubber hood fails, or any temperature sensor exceeds the temperature interlock on setpoint

• If the Auto Scrubber control panel is equipped with no fan controls (ASCP-W) and the fan input is triggered

NOTE

Auto Start will only enable to Auto Scrubber hoods. It cannot be used to engage duct sump washes.

With exception to the Auto Start option, when a wash cycle has been initialized the Auto Scrubber hoods will be washed in order starting with Auto Scrubber hood 1. If duct sumps are also connected to this system, they will be washed in order after the Auto Scrubber hoods have been washed.

A wash cycle can be stopped at any time by pressing the “WASH” button (if equipped with a keypad) or by the “WASH ON/OFF” icon (if equipped with a touch screen).

An Auto Scrubber hood will be prevented, or abort operating in the wash cycle, should one of the following events occur:

• A kitchen ﬁre alarm is detected.

• A sensor linked to the Auto Scrubber hood fails.

• The option to disable a wash during temperature interlock is on (factory defaulted on) and a sensor linked to the Auto Scrubber hood exceeds the temperature interlock on setpoint.

• If the Auto Scrubber control panel is equipped with no fan controls (ASCP-W) and the fan input is triggered.

Auto Scrubber20

Wash Sequence of Operation

NOTE

The previously stated items regarding ending a wash cycle/skipping a hood wash still apply. Please use this in conjunction with the information found in System Operation section found on pages 19 and 20.

WASH CYCLE ENABLED

• by User Interface Wash Button

• by Digital Input

• by BMS Interface

• by Scheduler

Hood Pre-Wash Delay

Pre-Soak

Solenoid 1 Opens

Pre-Soak Spray Time

Solenoid 1 Closes

Soak Time

Wash Top of Filters

Solenoid 1 Opens

Top of Filters

Wash Time

Solenoid 1 Closes

Between Sequence

Delay

Wash Bottom of Filters

Solenoid 2 Opens

Bottom of Filters

Wash Time

Delay for 30 seconds

Detergent pump ON

Pre-Soak Detergent

Injection Time

Detergent pump OFF

Delay for 5 seconds

Detergent pump ON

Top Wash Detergent

Injection TIme

Detergent pump OFF

Delay for 5 seconds

Detergent pump ON

Start next Auto Scrubber

Hood Wash

Start Sump Washes

Turn off all fan(s)

Sump Pre-Wash Delay

Sump Solenoid Opens

Wash Sump

Sump Wash

Time

Sump Solenoid Closes

Another Sump

available to be

washed?

YES

Delay for 5 seconds

Detergent pump ON

Sump Detergent

Injection Time

Detergent pump OFF

Between Sump

Delay

Solenoid 2 Closes

Drip Dry Time

Fan Dry Enable

ON (Default)

Fans controlling Auto

Scrubber Hood ON

Fan Dry Time

Fans controlling Auto

Scrubber Hood OFF

Bottom Wash Detergent

Detergent pump OFF

OFF

WASH CYCLE COMPLETED

Injection TIme

Another

Auto Scrubber

hood available to

be washed

Sumps available

to be washed?

WASH CYCLE COMPLETED

YES

Auto Scrubber 21

Wash Sequence of Operation, continued

HOOD WASH ENABLED BY AUTO START FEATURE

• Auto Scrubber hood fans have been running for minimum time (Default = 480 minutes) and have been shut off

Hood Pre-Wash Delay

Pre-Soak

Solenoid 1 Opens

Pre-Soak Spray Time

Solenoid 1 Closes

Soak Time

Wash Top of Filters

Solenoid 1 Opens

Top of Filters Wash Time

Solenoid 1 Closes

Between Sequence Delay

Wash Bottom of Filters

Solenoid 2 Opens

Bottom of Filters

Wash Time

Solenoid 2 Closes

Drip Dry Time

Fan Dry

Delay for 30 seconds

Detergent pump ON

Pre-Soak Detergent

Injection Time

Detergent pump OFF

Delay for 5 seconds

Detergent pump ON

Top Wash Detergent

Injection Time

Detergent pump OFF

Delay for 5 seconds

Detergent pump ON

Bottom Wash Detergent

Detergent pump OFF

OFF

AUTO START HOOD WASH

Injection Time

COMPLETED

Wash Cycle Factory Default Times

Time (seconds) Based on Filter Type

Wash Cycle

Stage

Pre-Wash Delay 10 10

Pre-Soak Spray 60 60

Pre-Soak Detergent 30 30

Soak 60 60

Top Wash 120 350

Top Wash Detergent 60 150

Between Sequence Delay

Bottom Wash 120 240

Bottom Wash Detergent

Drip Dry 60 60

Fan Dry 120 120

The wash times are based on filter cleaning tests using filters coated heavily with oil and then bakedon using high temperatures. Actual required cleaning times will vary based on cooking equipment, fuel type, cooking frequency, and the food prepared. The table shown above should be used as a starting point. After a few weeks, the field can make adjustments as necessary based on the cleanliness of the filters upon removal/inspection (see Maintenance on page 25).

Bafﬂe

Grease-X-Tractor™

Energy Recovery

-5 -5

60 60

NOTE

Grease Grabber™

Fans controlling Auto

Scrubber Hood ON

Fan Dry Time

Fans controlling Auto

Scrubber Hood OFF

Auto Scrubber22

ON (Default)

Airﬂow Testing Procedure

After the appropriate number of readings have been taken from the inlet slot of the hood, an average reading can be calculated by summing the velocity readings and dividing the total value by the number of readings taken.

Short Ridge Meter Components

For measuring exhaust airﬂow rates (cubic feet per minute = CFM), use a short ridge meter to measure velocities along the inlet slot of the hood. To ensure accurate data, all appliances should be on. Multiple locations need to be tested as outlined below to ensure an accurate reading.

To take velocity readings along the length of the hood, the short ridge meter must be evenly spaced along the length of each door to provide two readings per door. Vertical

Hood Length

48 to 69 inches 2

70 to 109 inches 4

110 to 139 inches 6

140 to 174 inches 8

175 to 192 inches 10

Number of Test

Locations

placement of the short ridge meter along the inlet slot is shown.

Average Velocity =

Sum of Velocity Readings

Number of Readings

Next calculate the total hood airﬂow volume (CFM) by using the following equation:

Hood CFM = [(Length of Hood in inches x 3.398) x (Average inlet slot velocity x 3.06)]  144

NOTE

The constants 3.398 and 3.6 are factory derived for use with the Auto Scrubber hood.

Calculation Example:

Four (4) inlet slot velocity readings (minimum)

Hood Length

Test Location

(left to right; in inches)

Velocity Reading (fpm)

6 274869

224 242 228 236

Average Velocity (FPM) =

(224 + 242 + 228 + 236)  4 = 233 FPM

Hood Exhaust Rate (CFM) =

[(96 x 3.398) x (233 x 3.6)]  144 = 1900 CFM

96 inches

Auto Scrubber 23

Additional Wiring Schematics

Ansul® Wiring Plan View

Snap-Action Switches may be wired as shown. Typical examples shown.

Equipment

115 VAC

Alarms

Fans

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.

Input

Power to cooking equipment

Shunt Trip Breaker

Input

Voltage Free Contacts for Building Alarm(s)

Amerex® Wiring Plan View

Power Source

PRM

Microswitch

Installer provided Junction Boxes

Basic Wiring Diagram

Red (Common)

Yellow (N.O)

Microswitch

Power Source

Black (N.C.)

NOTE: Do not use yellow wire on miroswitch in normal installation. The yellow wire is to be used only for extinguisher alarm, lights, circuits, etc.

Manual Reset Relay

Electric Gas Valve

Gas Valve

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

Manual Reset Relay Part No. 426151

Relay Coil

6 9 3

4 7 1

Electrical Rating 1/3 HP, 10 AMP, 115 VAC 1/2 HP, 10 AMP, 240 VAC 13 AMP, 28 VDC

Reset

115 VAC N

Power

Indicator

GND

Screw

Input

Manual Switch

Black Red

Brown

Gas Valve See Note 3

Power to fan(s)

Fan Starter

Ansul Snap-Action Switch Part No. 423878

Switch contacts shown with Ansul Automan in the cocked position

115 VAC/60Hz

L2 Neutral L1 Hot

Basic Wiring Diagram

Manual Reset Relay

Red (Common)

Yellow (N.O)

Microswitch

NOTES:

1. Denotes ﬁeld installation

2. Denotes factory installation

3. GAS VALVE: UL Listed electronically-operated safety valve for natural or LP Gas as needed of appropriate pressures and temperature rating, 115V/60 Hz or Amerex gas valves, PN 12870, 12871, 12872, 12873, 12874, 12875 and 12876.

4. K1a and K1b are N.0. when K1 is de-energized.

120V/60HZ

Black (N.C.)

K1b

Current Draw Max: 8A Resistive 8A Inductive 115 VAC

Push Button Switch

Gas Valve

(see note 3)

Note:

1. Denotes eld 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, 115V/60Hz” or Ansul gas valves.

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.

Auto Scrubber24

Maintenance

Filters

The ﬁrst or primary stage (bafﬂe or Grease-X-Tractor™) ﬁlters and second stage (Grease Grabber™) bead ﬁlters (if applicable) need to be inspected one week after start up, then once every two weeks to make certain the ﬁlters are positioned correctly (no gaps between ﬁlters) and that the wash system is adequately cleaning the ﬁlters.

To inspect the ﬁlters, remove all access doors. Each door is held in place with two cammed latch handles. Turn the handles and remove the doors.

Image 1

Once the doors are removed the ﬁlters can be removed. If the hood contains second stage ﬁlters, these will also need to be removed. While holding the handles of the ﬁlter, push the ﬁlter up and lift the bottom of the ﬁlter out of its track. Then pull the ﬁlter out of the hood.

3, 4 and 5. Repeat this for all the second stage ﬁlters.

Images 1 and 2.

Image 2

Images

Capture Tank

The interior surfaces of the hood capture tank should be wiped down weekly.

Image 3 Image 4

Once the second stage ﬁlters are out, (

Image 5)

the ﬁrst stage ﬁlters can be removed in the same

Image 5

manner.

Image 6.

Depending on the equipment under the hood, it might be easier to remove the ﬁlters from the left or right side. In that case, slide the ﬁlters

Image 6

towards the end that allows for easier removal.

After inspection, insert the ﬁlters back into the hood. Primary ﬁlters go in ﬁrst, then the second stage ﬁlters (if applicable). After installing all the ﬁlters, make sure the ﬁlters are positioned correctly in the hood. There should be no gaps between the ﬁlters.

If for some reason the ﬁlters don’t seem to be getting adequately cleaned, or if the ﬁlters appear damaged, consult the factory.

Auto Scrubber 25

Auto Scrubber Start-Up Checklist

Check boxes when item has been veriﬁed and reviewed with customer.

Hook-Up

 Electrical Connections

• Conﬁrm all electrical connections are made per Auto

Scrubber Control Panel (ASCP) wiring diagram.

• Turn on all hood, light and fan power (if

applicable).

• Check voltages on incoming lines to conﬁrm

these are correct.

 Plumbing Connections

• Plumb 1-inch hot water piping to backﬂow

preventer, then from backﬂow preventer to inlet hot water connection in control cabinet.

• Plumb 0.75-inch cold water piping to inlet cold

water mist connection in controls cabinet (if applicable).

• Plumb water connections from controls cabinet to

each hood.

• Plumb 0.75-inch cold water piping to cold water

mist connection in controls cabinet (if applicable).

 Detergent

• Detergent tank ﬁlled with proper detergent.

• Low detergent tubing and strainer should be at the

bottom of the detergent tank.

• Prime detergent pump.

Miscellaneous

 Fire Mode Test

• Trip ﬁre system microswitch. Conﬁrm fan/light operation (if applicable) and wash stopping when in ﬁre mode.

• Alarm message should appear on user interface and main controller.

 Low Detergent Mode

• If removing the ﬂoat from the tank, the user interface and controller should display a low detergent alarm. Replacing the ﬂoat in the tank (ﬁlled with detergent), the low detergent alarm should disappear.

 Hood Access

• Conﬁrm the hood access panels ﬁt tightly to prevent water from spraying out of the exhaust plenum onto appliances.

 Cleaning

• Is the hood cleaning properly? If not, refer to troubleshooting guide on pages 25 through 27.

Start-Up

 Test Fan/Light Control Modes (if applicable)

• Conﬁrm fan operation/rotation when enabled/ disabled by user interface.

• Conﬁrm hood light operation when enabled/disabled by user interface.

 Run Test Wash

• Test wash instructions on page 20.

• Conﬁrm solenoids and detergent pump are engaging correctly based upon sequence of operation found on pages 21 and 22.

_________ Record hot water pressure during wash.

Should be between 40-70 PSI

_________ Record cold water mist water pressure, if

equipped. Should be between 20-40 PSI

_________ Record hot water temperature during

wash. Should be 140°F

• Adjust water pressure if needed using throttling

valve. For cold water mist only.

Auto Scrubber26

Troubleshooting

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

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 correct direction? Have the electrician correctly wire the fan.

Is the make-up air operating?

Does the airﬂow need to be increased? Adjust or replace pulleys to increase fan RPM, install a larger motor.

Does the fan vibrate?

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

Is the fan operating at design levels? See exhaust fan troubleshooting section.

Is the fan correctly sized?

Are the ﬁlters in good condition? Clean ﬁlters, replace damaged ﬁlters, properly position ﬁlters.

Is there sufﬁcient make-up air?

(Kitchen should be in a slight negative but not excessive. Check to see if there is a strong draft through an open door).

Does the current cooking equipment match the original design?

Are there multiple hoods on one fan?

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.

Problems with make-up air may interfere with the exhaust fan. Check the manufacturer’s installation manual.

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.

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.

Check make-up air unit. Increase make-up air. Make-up air should be evenly distributed throughout the kitchen.

Adjust or replace fan to match the cooking equipment load.

One hood may be over exhausting and the other hood not drawing enough. Restrict second hood to help problem hood.

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

Are there cooling fans directed at the hood or cooking equipment?

Are there ceiling diffusers directing air at the hood?

Are there open windows or doors? Close windows and doors.

Are there cross drafts or other drafts in the kitchen?

Is the hood near a main walkway?

Are there pass-thru windows near the hood?

Is the make-up air entering through an attached plenum?

Turn off or redirect fans.

Move diffusers to more neutral area or replace with a diffuser that directs air away from the hood.

Find source of the draft and eliminate, add side skirts to hood (test with cardboard; use stainless for permanent side skirts); increase the amount of overhang on the spillage side; add a 6 in. (152.4 mm) 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.

Add side skirts to hood (test with cardboard ﬁrst); increase the amount of overhang on spillage side.

Adjust amount and locations of make-up air to eliminate drafts through the passthru windows.

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).

Auto Scrubber 27

Troubleshooting

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

Try turning off or reducing the amount of make-up air; block off portions of the

Are there drafts from make-up air?

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

Is the make-up air entering through an attached plenum?

Problem: The kitchen gets hot.

Is the hood capturing?

Is the make-up air entering through an attached plenum?

Problem: Cooking odors in the dining area.

Is the hood capturing?

Is there a draft through doors between the kitchen and dining area?

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.

Try turning off or reducing the amount of make-up air; heat the supply air.

Hood is not drawing enough air, see sections on fan performance and hood capture.

Try turning off or reducing the amount of make-up air; cool the supply air.

Hood is not drawing enough air, see sections above on fan performance and hood capture.

Decrease make-up air in the kitchen; increase exhaust air through hood.

Problem: Grease is running off the hood.

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.

Problem: Hood is noisy.

Is the fan running in the correct direction? See exhaust fan troubleshooting section.

Are the ﬁlters in place? Replace missing ﬁlters.

Is the hood over exhausting? Slow down fan (see exhaust fan troubleshooting section)

Auto Scrubber28

Troubleshooting

Problem: An Auto Scrubber hood is not washing routinely (wash cycle not activating).

Is the system in fault?

Are you relying on the hood to wash manually?

Are you relying on the hood to wash automatically?

Are the wash solenoids opening/closing?

Problem: Auto Scrubber hood is washing routinely but is not cleaning the ﬁlters properly.

Is the water temperature hot enough?

Is the detergent empty?

Detergent alarm will be present

Are you using the correct detergent? Use recommended detergent; see page 13.

Are the cooking loads very heavy?

Are the nozzles clogged? Clean/replace the nozzles.

Fire, high temperature and sensor faults will prevent a wash from starting. Correct these faults.

In the control panel Wash Enable option, verify the setting for “Wash by Button” is set to ON. Ensure (recommended after start up) the kitchen employees are pressing the WASH button daily.

In the control panel Wash Enable option, verify “Wash by BMS”, if the BMS is controlling the hood wash, or “Wash by Scheduler” or “Wash by Auto Start” are set to ON. Adjust these settings with factory advice.

Check voltage at each solenoid to conﬁrm voltage when a solenoid should be opening. If the solenoid is receiving voltage but the valve is not opening, the valve may be stuck and need replacement.

Correct water temperature plumbing to the hood. Adjust delay times between Auto Scrubber hoods to allow for the facility hot water heater to be able to heat longer.

Reﬁll the detergent

Increase the washing frequency. Increase the wash cycle and detergent timers for each sequence.

Problem: Hood is leaking water.

Are the access doors in place? Make sure the access doors are in place and completely sealed.

Is condensation forming in the hood?

Where is the hood leaking water? Contact the factory for further advice if the access doors are in place.

Hood should not be washed when food equipment is warm (not hot). Water pressure may be too high. Reduce the water pressure.

Auto Scrubber 29

Parts List

Part

Number

385987 Detergent Float

481461 Wash Nozzle

456767 Cold Water Mist Nozzle

481463 24V Coil for Solenoid

381050 3/4-inch Solenoid Valve

456765 Pressure Gauge

479363 Temperature Gauge

851709 16H x 16W Grease-X-Tractor™ SS Filter

851710 16H x 20W Grease-X-Tractor™ SS Filter

852881 16H x 16W Grease Grabber™ Second Stage Filter

852880 16H x 20W Grease Grabber™ Second Stage Filter

457627 16H x 16W Stainless Steel Bafﬂe Filter

457629 16H x 20W Stainless Steel Bafﬂe Filter

Description

Auto Scrubber30

Maintenance Log

Date ___________________Time _____________ AM/PM Notes: ___________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________

Auto Scrubber 31

Our Commitment

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

Product warranties can be found online at accurex.com, either on the speciﬁc product page or in the Warranty section of the website at Accurex.com/Resources/Warranty.

P.O. Box 410 Schoﬁeld, WI 54476 Phone: 800.333.1400 • Fax: 715.241.6191 Parts: 800.355.5354 • accurex.com

Accurex Auto Scrubber Operator’s Manual

Specifications and Main Features

Frequently Asked Questions

User Manual