Marshall Air HST13 Service Manual

OWNER'S MANUAL

grilled

thicknesses of buns. The buns are discharged onto a product

slide at the bottom of the unit. The system is high speed and

allowing operators to produce the hottest buns in the shortest

MODEL HST13 - VERTICAL TOASTER

Supplier Name: Address:

Serial #: Date Received:

Date Installed: Telephone #: 704-525-6230 Toll Free #: 800-722-3474 Customer Service Fax #: 704-525-6229 Service Referral #: 800-722-3474 Local Service Name: Local Service #: Conveyor Speed Setting:

MARSHALL AIR SYSTEMS, INC.

419 Peachtree Drive South Charlotte, NC 28217

MANUFACTURER'S INTRODUCTION GENERAL SPECIFICATIONS

Height: 23.250"

The Marshall High Speed Vertical Toaster produces a effect on the cut side of sandwich buns. The buns are inserted at the top of the unit and are pressed against a heated platen surface, which is covered by a replaceable toaster platen sheet. The spacing between the heated grill and the conveyor is adjustable to accommodate different

also variable in speed. Additionally, the heat controls are preset at factory, which eliminates unauthorized tampering with heat settings. The flexibility of this toaster is unmatched

time.

Width: 19.875" Depth: 15.250"

Electrical:

Power Cord:

Weight:

208V Single Phase 18.5 Amps 240V Single Phase 18.5 Amps 6 ft. 3 wire including ground, with NEMA L6 -20P Plug (Plug furnished by others on international units.) 130 lbs.

OWNER'S MANUAL

MODEL HST13 - VERTICAL TOASTER

TABLE OF CONTENTS

INSTALLATION 1 -2

OPERATION 2 PREVENTIVE MAINTENANCE 2-4 TROUBLESHOOTING GUIDE 4-5

BROILER & TOASTER LIMITED WARRANTY 6

BROILER & TOASTER WARRANTY RETURN PROCEDURES 7

ILLUSTRATIONS

OVERALL DIMENSIONS FIGURE 1,2

HANG-ON PARTS FIGURE 3 SWITCHES AND TOASTER PLATEN SHEET FIGURE 4 BELT TENSION PARTS AND ADJUSTMENT MECHANISM FIGURE 5 INTERNAL PARTS AND DRIVE COMPONENTS FIGURE 6 ADJUSTMENT LEVER OPERATION FIGURE 7 BELT REMOVAL INSTRUCTIONS FIGURE 8 TOASTER BELT ORIENTATION FIGURE 9 CONTROL CABINET ACCESS INSTRUCTIONS FIGURE 10 TOASTER TENSION INSTRUCTIONS FIGURE 11 WIRING SCHEMATIC (208V, 50/60HZ, 1PH) #135169

WIRING SCHEMATIC (240V, 50/60HZ, 1PH) #135817

These screws are located inside the left side panel (switch side). After uncrating unit, remove the side panel and

is installed from

er operation, insert heels on the side of the

ance of the toasted

age

OWNER'S MANUAL

MODEL HST1 3 -VERTICAL TOASTER

INSTALLATION

35168CH7 RV100599 1

PRE-INSTALLATION

The toaster is packaged to minimize the risk of shipping damage. Immediately upon receipt, make certain to

1. inspect the unit for damage. FILE ALL CLAIMS WITH THE FREIGHT CARRIER.

Before installation and operation of the toaster, it is necessary to remove two (2) shipping screws from the unit.

2. This toaster is shipped completely wired and ready to plug into a grounded NEMA L6-20R amp receptacle. (208

Volt Single Phase, 3 wire including the ground circuit). Check receptacle for proper voltage and phase. Units

FINAL INSTALLATION

Place toaster on level metal surface. The unit should be caulked to the countertop as required by local health

department codes. Check that the two lift off side covers are in place on the toaster AND THE LEFT COVER IS SECURED WITH A

SCREW AT THE BOTTOM.

Check that the toaster platen sheet is installed over the contact platen. The toaster platen sheet

3. the top of the unit by lightly creasing it at the center, and directly hanging it on the center platen.

4. Install the bun guide/spacer on the toaster. (Figure 4)

5. Connect the toaster to the power supply.

6. Turn on the conveyor switch on the toaster and check for free movement of the two conveyor belts.

7. Turn on the heat switch. Allow 15 minutes for the toaster to warm up before toasting buns. After warm up, drop buns into the toaster at the top of the unit. For prop

toaster marked "Heel", and crown on the opposite side. THE CUT SIDES OF THE HEEL AND CROWN MUST The toasted heel and crown will drop down onto the product slide together. Check the appear

9. buns.

Adjust the gap settings using the two levers inside the right panel. (See Figure 7). The levers are labeled "Heel"

10.

gap and "Crown" gap. To adjust the gap, loosen the black adjustment knob (Figure 5), several turns to diseng

d through the machine but instead are damaged or

th or towel and

OWNER'S MANUAL

MODEL HST13 - VERTICAL TOASTER

The speed control is located behind the left side cover. DISCONNECT (UNPLUG) THE POWER BEFORE

11.

OPENING THE SIDE COVER. The speed control can be adjusted to control the conveyor belt speed to lighten or darken the toasted product. The toaster is shipped with the speed control set on 8, which is approximately a ten second toast.

12.

OPERATION

1. The toaster is operated by turning on the conveyor switch (see Figure 4) and then the heat switch.

2. Allow the toaster to warm up for 15 minutes before toasting buns.

3. For proper operation, insert heels on the side of the toaster marked "HEEL" and crowns on the opposite side.

4. Turn both switches off at the end of the day to turn off the toaster.

5. Toaster Platen Sheet General Information:

Test at least 3 buns before putting the toaster into service. Uniform surface toasting and bun temperature are achieved when the gap described in step 10 is set correctly.

A. The toaster is not designed for use with but tered buns. B. Life of Toaster Platen Sheet - depends on usage and cleaning.

C. Sheet turning white - this is black pigment fading out of the sheet and does not mandate sheet replacement.

D. What triggers sheet replacement? When buns no longer fee torn, the toaster platen sheet should be replaced. Replace ONLY with Marshall toaster platen sheet.

CAUTION: DO NOT REMOVE THE CONTROL PANEL COVER WITHOUT FIRST TURNING OFF THE TOASTER AND UNPLUGGING THE TOASTER.

PREVENTIVE MAINTENANCE

2. Rotate toaster platen sheet so the "heel" side is on "crown" side, opposite than the day before.

3. Re-install all parts after drying.

E. How to get maximum life? Rotate the sheet daily so the "HEEL" side is opposite from the day before.

DAILY:

Carefully remove the toaster platen sheet (Figure 4), lay it on a flat surface, and wipe with a soft clo clean with soap and water. Use ONLY enough water to make the cloth damp. DO NOT USE ABRASIVES ON

THE TOASTER PLATEN SHEET.

n a widthwise, circular motion. The belt is

DO NOT POUR

Thoroughly rinse the belt by wiping with a clean, damp towel. Frequently rinse the wiping towel to remove the

Marshall Air Systems, Inc.

OWNER'S MANUAL

MODEL HST13 - VERTICAL TOASTER

WEEKLY:

1. Turn toaster off and unplug power cord from wall receptacle.

2. Perform daily maintenance.

Remove the front and back covers (Figure 3), by lifting these covers off the toaster. Clean these covers with

soap and water. Wipe the exposed metal parts with a damp soft cloth or towel.

4. Reconnect the power cord.

5. Clean belts according to the Belt Cleaning Procedure below. Do not scrub belts with abrasive material.

6. Install the front and rear covers.

BELT CLEANING PROCEDURE

NOTE:

Supplies Needed:

A. Turn conveyor and heat switches off.

Put heat resistant gloves on your hands. IT IS IMPORTANT TO WEAR HEAT RESISTANT GLOVES TO

AVOID BURNING HANDS.

C. Dispense Sizzle Plus agent onto a clean, damp No-Scratch Pad until the pad is nearly saturated.

Using the saturated pad, lightly rub the exposed surface of the belt i not easy to wet so repeated rubbing may be needed to completely contact the soiled surface.

SIZZLE PLUS ONTO THE BELT SURFACE.

E. Rotate the belt by turning the conveyor switch on. Turn switch off when new section of belt is exposed.

F. Repeat cleaning steps on new, exposed section of belt so that the entire surface of belt has agent applied.

TOASTER BELTS MUST BE CLEANED WHILE TOASTER IS STILL AT OPERATING TEMPERATURE.

Kay Chemical #54238 Sizzle Plus Agent, No-Scratch Pad, #03574-018, Heat Resistant Gloves (A 1qt. bottle of agent and 1 No-Scratch Pad are shipped with the toaster to your restaurant. If you do not receive, contact your restaurant supplies dealer or Kay Chemical Customer Service, 800-529-5458.)

G. Finish scrubbing entire belt by repeating the process of:

A. Turning the toaster conveyors on and off. B. Scrubbing the exposed surfaces of both crown and heel belts.

accumulated soil and cleaner residue.

Replace all connections or components that have damaged terminals. Replace all damaged wiring with same or

Lay the unit on the right side. The bottom of the control cabinet will

135168CH7 RV1

00599

Marshall Air Systems, Inc.

OWNER'S MANUAL

MODEL HST13 - VERTICAL TOASTER

MONTHLY:

1. Perform Daily and Weekly Maintenance.

2. Replace any worn out toaster platen sheets or conveyor belts with Marshall parts.

TROUBLE SHOOTING GUIDE

SERVICE MUST BE PERFORMED BY A QUALIFIED SERVICE COMPANY. THE TERM "QUALIFIED SERVICE COMPANY" MEANS ANY INDIVIDUAL, FIRM, CORPORATION OR

NOTE:

WARNING:

COMPANY WHICH IS EITHER ENGAGED IN AND IS RESPONSIBLE FOR THE INSTALLATION OR REPLACEMENT OF ELECTRICAL COMPONENTS, OR THE CONNECTION, INSTALLATION OR REPAIR OF ELECTRICAL APPLIANCES, WHO IS EXPERIENCED IN SUCH WORK, FAMILIAR WITH ALL PRECAUTIONS REQUIRED, AND HAS COMPLIED WITH ALL THE REQUIREMENTS OF THE AUTHORITY HAVING JURISDICTION.

INSPECTION, TESTING, AND REPAIR OF ELECTRICAL EQUIPMENT SHOULD BE PERFORMED BY QUALIFIED SERVICE PERSONNEL. THE UNIT SHOULD BE UNPLUGGED WHEN SERVICING, EXCEPT WHEN ELECTRICAL TESTS ARE REQUIRED.

USE EXTREME CARE DURING ELECTRICAL CIRCUIT TESTS. LIVE CIRCUITS WILL BE

DANGER:

PROBLEM:

1. No heat and conveyor belts do not move. SOLUTION:

A. Check that toaster is plugged in. B. Check that conveyor and heat switches are on.

C. Check that power is available at the receptacle. Check toaster nameplate for voltage.

PROBLEM:

2. Conveyor belts move but no heat.

WITH UNIT UNPLUGGED, check connections inside of plug. WITH UNIT UNPLUGGED, remove left side cover

screw at bottom of cover, and remove cover. Check electrical connections for bums, discoloration or arcing.

a higher rated wire.

SOLUTION:

A. Check that the heat switch is on.

Turn off switches and unplug toaster. Remove left and right side covers. Remove ONE screw and loosen one screw from each side as shown in Figure 10.

now swivel open.

EXPOSED. WHERE TESTING INDICATES "WITH POWER OFF", BE SURE THAT THE CONVEYOR AND HEAT SWITCHES ARE OFF AND TOASTER IS UNPLUGGED.

D. Replace all connections or components that have damaged terminals. Replace all damaged wiring with same or a higher

OWNER'S MANUAL

MODEL HST13 - VERTICAL TOASTER

C. Check for loose connections at the temperature controllers and heating elements.

E. Check resistance of heating platens:

Center Platen Heel Platen Crown Platen Schematic - 208V 135169 20 OHMS 52 OHMS 52 OHMS Schematic - 240V 135817 25 OHMS 52 OHMS 52 OHMS

PROBLEM:

3. Grill is hot, but conveyor belts do not move. SOLUTION:

A, Check that conveyor is on. B. Check conveyor speed control setting. C. Check for power to speed control circuit board. D. Check that belt is not slipping on roller. If so, check for tears and that the tension keeper lever is engaged in the slot shown in Figure 5. E. Check for loose chain, or sprockets, tighten set screw on flat of shaft if needed. Replace as needed. F. TURN OFF SWITCHES, UNPLUG TOASTER, and remove the right side cover. Check fuse. Replace fuse if necessary with same type AGC 1.5 Amp. G. Check for loose connections or wiring. H. Check that circuit board 115/230 switch is at the 230V position. I. Check for DC voltage of at least 25VDC at the motor.

PROBLEM:

4. Product is over or under toasted. SOLUTION:

A. Check toasting speed. Good toasting will occur in 10 seconds from bun load to drop. B. Check gap setting. There must be compression of the bun as it feeds into the toaster. Decreasing the gap (per Page 1, Number 10) will increase bun temperature and darken surface color. C. If buns are burned, the toaster platen sheet may be causing buns to get stuck in the toaster OR the toaster thermostat may have failed in a closed condition making the center platen too hot. Check that thermostat DOES cycle.

PROBLEM:

5. Buns do not feed properly into toaster. SOLUTION:

A. Check condition of Toaster Platen Sheet to be sure buns are not sticking to cover. Replace Toaster Platen Sheet if necessary. B. Belts need washing as described under Weekly Maintenance on Page 3. C. Toast er gap set too close. See Page 1, Number 10.

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