LVO Manufacturing RW1548 Instruction Manual

LVO Manufacturing Inc.

LVO Manufacturing Inc.

LVO Manufacturing Inc. LVO Manufacturing Inc.

Rock Rapids, IA 51246

__________________________________________________________________________________________________________________________________________________________________

[phone]

808 N. 2nd Avenue E., P.O. Box 188

www.lvomfg.com

1-800-346-5749 Fax [phone]

W A R R A N T Y

LVO Manufacturing Inc. warrants equipment manufactured by it to be free from defects in material
and workmanship for a period of one (1) year from date of delivery except as noted below.

LVO will not be held responsible for damage or unsatisfactory performance due to negligence,
accident, alteration, unauthorized repair, improper installation or startup (see owner's manual),
improper application, or improper maintenance (see owner's manual).

Parts found, on factory inspection, to be defective in workmanship or materials during the warranty
period will be replaced (parts and labor, not overtime), provided the Buyer returns the defective parts
to LVO Manufacturing Inc. within 30 days, transportation prepaid. LVO Manufacturing Inc. will pay
UPS 2nd Day Air shipping charges for parts (with the exception of excessively large or heavy items)
covered on warranty if the machine is not operational.

LVO Manufacturing Inc. reserves the right to make changes in design and construction of its products
without imposing any obligation upon itself toward products previously manufactured.

This warranty is in lieu of any other warranties, expressed or implied, made on the part of LVO
Manufacturing Inc. who does not accept responsibility to any purchaser of it's products for any
representation or warranty made by dealers or salespersons beyond those herein expressed including
any implied warranties of merchantability or fitness for a particular purpose.

Warranty Procedure

1) Locate and record the 12 digit serial number located on the upper left-hand side of the pan washer.

2) Gather as much information about the problem as possible.

3) Call LVO Manufacturing Inc. at 1-800-346-5749 and request technical service.
Prior to performing any warranty work you must call the factory for a warranty
authorization number (WA-____). This warranty authorization number must be
on every invoice we receive for services rendered on the machine. Without this
authorization number the invoice will not be paid. The warranty number must
also be included with the defective part returned.

1

LVO Manufacturing Inc.

LVO Manufacturing Inc.

LVO Manufacturing Inc. LVO Manufacturing Inc.

Rock Rapids, IA 51246

__________________________________________________________________________________________________________________________________________________________________

[phone]

808 N. 2nd Avenue E., P.O. Box 188

www.lvomfg.com

1-800-346-5749 Fax [phone]

Table of Contents

Warranty 1
Table of Contents 2
Specifications 3
Electrical Data Breakdown 4
Warnings and Cautions 5
Introduction 6
Installation Instructions 7
Start-Up Procedures 11
Sequence of Operation 13
Operation of Machine 14
Trouble Shooting - Electric Machine 17
Trouble Shooting - Gas Machine 18
Trouble Shooting - Steam Machine 18
Parts List 19
Preventive Maintenance 21A

Drawings:

General View 22
Floor Model with Ramp 23
Three View: - Gas Wash Heat - Pit Model 24
Three View - Electric Wash Heat - Floor Model 25
Three View - Steam Wash Heat - Floor Model 26
Concrete Pit Specifications 27
Stainless Steel Pit - General 28
Stainless Steel Pit Liner - Top View 29
Stainless Steel Pit Liner - Side View 30
Bun Pan Rack 31
Cake Pan Rack 32
Bowl/Utensil Rack 33
Rinse System 34
Floor Grate and Screen Location 35
Electric Wash Heat - Control Circuit Ladder Diagram 36
Gas or Steam Wash Heat - Control Circuit Ladder Diagram 37
Electric Wash Heat - Control Circuit Schematic with 700 cfm Fan 38
Gas Wash Heat - Control Circuit Schematic with 700 cfm Fan 39
Steam Wash Heat - Control Circuit Schematic with 700 cfm Fan 40
Trouble Shooting Flowchart 41

2

LVO Manufacturing Inc.

LVO Manufacturing Inc.

LVO Manufacturing Inc. LVO Manufacturing Inc.

808 N. 2nd Avenue E., P.O. Box 188

Rock Rapids, IA 51246

[phone]

__________________________________________________________________________________________________________________________________________________________________

1-800-346-5749 Fax [phone]

www.lvomfg.com

RW1548 SPECIFICATIONS

OVERALL DIMENSIONS

WIDTH = 57” (60” WITH SIDE SUPPORT ANGLES)
DEPTH = 65”
HEIGHT (OVERALL) = 92-1/2” (94-1/2” GAS)
HEIGHT (PIT MODEL) = 81-1/2” ABOVE FLOOR

HOT WATER SYSTEM

1” HOT WATER SUPPLY REQUIRED, UNION PROVIDED
140° F. WATER REQUIRED AT THE MACHINE
168 GPH AT 20 PSI (14 GAL./CYCLE x 12 CYCLES/HR.
RINSE BOOSTER: TWO 9kW HEATING ELEMENTS IN A 20 GAL. RINSE TANK

FULL LOAD AMPS
208 VOLT 230 VOLT 460 VOLT

ELECTRIC 133.1 122.3 62.1
GAS/STEAM (INJECTED) 95.6 88.4 45.2
STEAM (RECIRCULATING) 45.6 43.2 22.6

GAS SYSTEM (GAS MACHINES ONLY)

½” GAS SUPPLY CONNECTION
NATURAL: 7” W.C. MINIMUM INLET, 6” W.C. MAIN MANIFOLD = 66,000 BTU
PROPANE: 11” W.C. MINIMUM INLET, 10” W.C. MAIN MANIFOLD = 66,000 BTU
4” STAINLESS STEEL CHIMNEY

STEAM SYSTEM (STEAM MODELS ONLY

¾” STEAM LINE, 10-15 PSI - 37 LBS. / HR. AVERAGE – INJECTED
76 LBS. / HR. AVERAGE – RECIRCULATING

WASH SYSTEM

10 HP & 5 HP PUMPS IN SERIES RECIRCULATE APPROXIMATELY 240 GPM @ 60 PSI.

HEAT: >ELECTRIC – ONE 9 kW AND ONE 4.5 kW HEATING ELEMENT
>GAS – THREE 22,000 BTU RATED INFRARED BURNERS = 66,000 BTU
>STEAM – DIRECT INJECTION, 10-15 PSI, 37 LBS / HR AVERAGE
RECIRCULATED, 10-15 PSI, 76 LBS / HR AVERAGE

65 GALLON WASH TANK
1-1/2” COPPER DRAIN
8” STEAM EXHAUST VENT COMPANION FLANGE

3

LVO Manufacturing Inc.

LVO Manufacturing Inc.

LVO Manufacturing Inc. LVO Manufacturing Inc.

Rock Rapids, IA 51246

__________________________________________________________________________________________________________________________________________________________________

[phone]

808 N. 2nd Avenue E., P.O. Box 188

www.lvomfg.com

1-800-346-5749 Fax [phone]

Electrical Data for MODELS RW1548 - Electric

Voltage 208 230 460
Phase 3 3 3

Pump Motor (5HP + 10HP) 43.6 41.2 20.6
Control Circuit 2.0 2.0 2.0
Wash Heaters (one 9kW + one 4.5kW) 39.5 35.9 18.9
Rinse Heaters (two 9kW) 50.0 45.2 22.6
Total 133.1 122.3 62.1
Exhaust Fan (Opt.) 2.0 2.0 2.0

Electrical Data for MODELS RW1548 - Gas

Voltage 208 230 460
Phase 3 3 3

Pump Motor (5HP + 10HP) 43.6 41.2 20.6
Control Circuit 2.0 2.0 2.0
Rinse Heater (two 9kW) 50.0 45.2 22.6
Total 95.6 88.4 45.2
Exhaust Fan (Opt.) 2.0 2.0 2.0

Electrical Data for MODELS RW1548 - Steam

Voltage 208 230 460
Phase 3 3 3

Pump Motor (5HP + 10HP) 43.6 41.2 20.6
Control Circuit 2.0 2.0 2.0
Total 45.6 43.2 22.6
Exhaust Fan (Opt.) 2.0 2.0 2.0

Electrical Supply to the machine should exceed the figures by the amount required by local
codes.

Note: Changing the voltage of the machine in the field requires different heating elements.
Contact the factory if this situation arises.

4

LVO Manufacturing Inc.

LVO Manufacturing Inc.

LVO Manufacturing Inc. LVO Manufacturing Inc.

Rock Rapids, IA 51246

__________________________________________________________________________________________________________________________________________________________________

General Warnings and Cautions

1. Service work on the machine should be done by either a factory representative or qualified local
service company. Contact the factory if the machine is under warranty.

2. Failure to follow the cleaning guidelines described in this manual will damage the machine and
will void the warranty.

Gas Model Warnings and Cautions:

1. Installation must conform with local codes and the National Fuel Gas Code, ANSI Z223.1.
In Canada: Installation must be in accordance with CGA Standard CAN/CGA-B149.1, Natural Gas
Installation Code or CAN/CGA-B149.2, Propane Installation Code.

[phone]

808 N. 2nd Avenue E., P.O. Box 188

www.lvomfg.com

1-800-346-5749 Fax [phone]

FOR YOUR SAFETY: DO NOT STORE OR USE GASOLINE OR OTHER
FLAMMABLE VAPORS OR LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER
APPLIANCE.

WARNING: IF YOU SMELL GAS, SHUT OFF THE GAS SUPPLY TO THE
APPLIANCE, EXTINGUISH ANY OPEN FLAME, AND TEST ALL JOINTS WITH A
SOAP SOLUTION. IF ODOR PERSISTS, CALL YOUR GAS SUPPLIER
IMMEDIATELY.

AVERTISSEMENT: SI UNE ODEUR DE GAZ EST DÉCELÉE, COUPER
L’ALIMENTATION EN GAZ DE L’APPAREIL, ÉTEINDRE TOUTES LES FLAMMES
ET VÉRIFIER TOUS LES RACCORDS À L’AIDE D’UNE SOLUTION SAVONNEUSE.
SI L’ODEUR PERSISTE, AVERTIR IMMÉDIATEMENT LE FOURNISSEUR DE GAZ.

2. Instructions should also be posted in a prominent location describing what to do in the event that
the smell of gas is detected in the vicinity of the machine. (This information can be obtained from
your local gas supplier).

3. Do not obstruct the flow of ventilation and combustion air to the machine.

4. Gas model pan washers are equipped with an electronic ignition which automatically lights the
burners when the power switch is turned to the "ON" position and there is enough water in the
machine. To shut the burners off, the power switch should be turned to the "OFF" position.

5

LVO Manufacturing Inc.

LVO Manufacturing Inc.

LVO Manufacturing Inc. LVO Manufacturing Inc.

Rock Rapids, IA 51246

__________________________________________________________________________________________________________________________________________________________________

[phone]

808 N. 2nd Avenue E., P.O. Box 188

www.lvomfg.com

1-800-346-5749 Fax [phone]

Introduction

This manual should be read and understood by everyone involved with the installation and operation
of the rack washer. Keep this manual in a safe place for future reference. Extra copies or replacement
copies can be purchased from the manufacturer.

Service work on the machine should be done by either a factory representative or qualified local
service company. Contact the factory if the machine is under warranty.

The LVO rack washer is designed for use in bakeries, restaurants, schools, hospitals, and hotels, to
clean racks, pots, pans, bowls, and utensils. LVO rack washers are constructed of 14 gauge stainless
steel (cabinets) and 12 gauge stainless steel (framework). The interior piping, rinse system, wash
arms, and screens are stainless steel. The control panel is assembled with UL approved components
and is housed in a stainless steel control box. Because of its sturdy construction, it will deliver years
of powerful, thorough cleaning.

The machine is equipped with heating element(s) in the rinse tank to boost the rinse water to a
sanitizing 180 F at the inlet to the machine. A rinse tank heated with recirculated steam is an option
available on some models.

The wash tank on electric models incorporates heating element(s) for heating the wash water. The gas
models use a series of 22,000 BTU infrared burners. Steam models use a direct injection system or a
recirculated steam heating coil.

The pump recirculates wash water at approximately 55 pounds per square inch of pressure.

Each machine is equipped with two safety switches. The first is a low water cut-off, which shuts the
machine off when the water level in the wash tank falls below the required level. The other safety
device is a door switch which prevents the machine from operating when the door is not completely
closed. An electrical schematic for your machine is posted inside the control box cover.

Detergent Feeders

This machine must be operated with an automatic detergent feeder, including a visual means to verify
that detergent is delivered or a visual or audible alarm to signal that detergent is not available for
delivery. Power for the feeder can be provided by the pump supply connection in the control panel.
See feeder equipment manual for additional information.

6

LVO Manufacturing Inc.

LVO Manufacturing Inc.

LVO Manufacturing Inc. LVO Manufacturing Inc.

Rock Rapids, IA 51246

__________________________________________________________________________________________________________________________________________________________________

[phone]

808 N. 2nd Avenue E., P.O. Box 188

www.lvomfg.com

1-800-346-5749 Fax [phone]

Installation Instructions

Step 1 READ: Read and understand these instructions thoroughly before attempting any part of the

installation procedure.

WARNING: Not following these instructions may void warranty, cause
damage to the equipment and/or cause injury to anyone involved in the
installation or operation of this machine.

A copy of the installation instructions and start-up procedure is printed on the yellow sheet
attached to the side of the machine. EVERYONE involved with the installation must be
familiar with all aspects of the installation procedure.

Step 2 POSITIONING: The factory recommends leaving as much room as possible around the
machine for future service work. No less than 16" should be allowed along the sides of the
machine (36" for side with control box) and no less than 12" between the rear of the
machine and the wall. Extra room around the machine will facilitate cleaning the washer area.

Note: Gas models should be installed in a location free of drafts.

Step 3 UNCRATING: Leave the machine fully crated until the washer is placed in the location
where it is to be installed. Inside you will find the accessories for the machine. Among these
will be the fan and the legs (if ordered). The legs are adjustable by turning the small end one
way or the other. Legs are not required for pit models.

When a pit is used it can be installed prior to receiving the machine. There are two types of
pits to choose from: concrete (see page 27) or stainless steel (see pages 28 - 30). Concrete
pits are the most common. They are usually installed by a general contractor. Note that the
drain system will also be installed at this time. Generally concrete pits are painted to make
them water proof.

A stainless steel pit is available for installations in buildings with basements. The stainless pit
can also be used as a liner with concrete poured around it. The stainless steel pit is equipped
with a coupler to allow the plumber to connect the drain (see pages 28 - 30).

Prior to receiving the rack washer, the service lines can be stubbed in close to where the rack
washer will be installed (see page 22). This will speed up the completion of the installation
once the machine is in place.

7

LVO Manufacturing Inc.

LVO Manufacturing Inc.

LVO Manufacturing Inc. LVO Manufacturing Inc.

Rock Rapids, IA 51246

__________________________________________________________________________________________________________________________________________________________________

There are many methods for setting the machine in the pit. Often the machine is slid into the
pit from the front. Hydraulic jacks, pry bars and pallet jacks or a forklift are usually necessary
to accomplish the task. Keep in mind that the heaviest part of the machine is the backside
where the pumps are located.

Once the machine is in the pit, the front floor grate should be set in place. The machine
should then be moved ahead to eliminate any gaps between the machine and the floor grate
yet leaving enough a space that the floor grate can be removed for periodic hosing down of
the pit floor.

Step 4 DRAIN: Provisions for the drain should be made next. The rack washer has a copper drain
located as shown on pages 24 - 26 of this manual (see page 3 for drain size). The drain
should be plumbed according to local code. Local ordinance may require a grease trap, vent,
and/or a floor sink. If required these should be installed before the machine is installed. It is
strongly recommended that unions be used to allow the machine to be easily moved. Failure
to do so may void the warranty.

Models that set in a pit do not require a drain connection because the wash tank drains
directly into the pit.

Step 5 WATER SUPPLY HOOK-UP: The factory recommends 140° F (120° F minimum) hot
water at the machine (see page 3 for water line size). This may require a dedicated water
heater for the rack washer. If hard water is present the manufacturer recommends installing a
water softener or calcium filter. Hard water deposits will shorten the life of many of the
components on the rack washer, resulting in higher maintenance costs. Please note that a
union is installed at the point of hook-up (see pages 24 - 26). This will allow the machine to
be moved for service and cleaning. The customer must furnish a shut-off valve on the supply
side of the union. This shut-off should be easily accessible to the operator of the machine.

Step 6 STEAM VENT: The machine is equipped with a collar for 8" duct work as shown on pages
24 - 26. This duct should be directly vented to the outside of the building. DO NOT vent
into a wall, attic, or any other concealed space of the building and avoid horizontal runs of
duct.

The factory recommends 8" plastic pipe or stainless steel duct for the vent. If stainless steel is
used the duct work should be installed with reverse joints so that the condensate inside the
vent can drain back into the machine without leaking. All seams should also be sealed with
silicon.

Generally the machine is ordered with a 700 cfm, 1/2 Hp squirrel cage fan. The 700 cfm fan
and adapter (provided) should be mounted and siliconed directly to a flange on the top of the
machine before the duct work is installed. The ductwork attaches directly to the exhaust of the
fan. Wire is provided to wire the fan directly into the control panel. A dedicated breaker and

[phone]

808 N. 2nd Avenue E., P.O. Box 188

www.lvomfg.com

1-800-346-5749 Fax [phone]

8

LVO Manufacturing Inc.

LVO Manufacturing Inc.

LVO Manufacturing Inc. LVO Manufacturing Inc.

Rock Rapids, IA 51246

__________________________________________________________________________________________________________________________________________________________________

contactor for the 700 cfm fan are provided. The 700 cfm fan is controlled by a timer and runs
for a short time at the end of each cycle.

Note: Consult the factory before connecting any fan not supplied with the machine.

Step 7 ELECTRICAL CONNECTION: The electrical connection to the machine should be made
by a qualified electrician. All steps should be taken to insure that the supply voltage to the
machine is the same as the rated voltage of the machine. Also check that sufficient amperage
is supplied to the machine (see page 3 or page 4 for ratings).

A main power shut-off, supplied by the customer, must be installed near the machine in a
place easily accessible by anyone operating or servicing the machine. The line from the main
shut-off to the machine should be watertight flex conduit. The factory strongly recommends
that a few extra feet be used to allow the machine to be moved if necessary. The wire used to
supply the machine must be heavy enough to carry the amperage load of the machine.

The first connection should be the main ground to the grounding lug on the control panel.
Next the hook-up can be made to the main power block. On 230 VAC machines the wild leg
must be connected to the center terminal.

Once the hook-up is complete the circuit breakers in the control box of the washer must be
checked to make sure they are in the "OFF" position. The main switch on the wall can then be
turned on to power the machine.

Step 8 GAS CONNECTION (Gas models only): A certified gas technician is required for the
hook-up and final adjustments of the burners. This is necessary to insure proper inlet and
manifold pressure for the gas machines (see page 3 for gas pressure settings).

Verify the type of gas supply to be used, either natural or LP, and make sure the marking on
the gas data plate agrees with that of the supply. The gas line hook-up must be made with a
union at the location shown on page 24 (see page 3 for gas line size). This line must have a
shut-off valve (supplied by the customer) installed near the machine and accessible by anyone
operating or servicing the machine.

A stainless steel gas chimney runs up the backside of the machine (see page 3 for size of
chimney). A draft diverter is included with the machine (shipped inside the machine with the
other accessories). The draft diverter must be installed on top of the factory installed
chimney. The Type B gas flue can then be continued to the outside of the building per local
codes.

The initial start-up of the burners should not be done until the following start-up procedures
for the machine have been completed.

[phone]

808 N. 2nd Avenue E., P.O. Box 188

www.lvomfg.com

1-800-346-5749 Fax [phone]

9

LVO Manufacturing Inc.

LVO Manufacturing Inc.

LVO Manufacturing Inc. LVO Manufacturing Inc.

Rock Rapids, IA 51246

__________________________________________________________________________________________________________________________________________________________________

Step 9 STEAM HOOKUP (Steam models only): A steam line is required to supply the steam

injector or recirculated steam heat exchanger coil (see page 3 for size of steam line). A
strainer is already built into the machine but a union will be required in the supply line
(supplied by the customer). The Specification sheet on page 3 lists the rated pressure and
average steam consumption rate for the machine.

[phone]

808 N. 2nd Avenue E., P.O. Box 188

www.lvomfg.com

1-800-346-5749 Fax [phone]

10

LVO Manufacturing Inc.

LVO Manufacturing Inc.

LVO Manufacturing Inc. LVO Manufacturing Inc.

Rock Rapids, IA 51246

__________________________________________________________________________________________________________________________________________________________________

[phone]

808 N. 2nd Avenue E., P.O. Box 188

www.lvomfg.com

1-800-346-5749 Fax [phone]

Start-Up Procedures

Warning: These instructions must be followed or damage to the machine will result.

Step 1: Close the drain valve (see location on page 24 - 26). On machines equipped with Auto Fill
and Auto Drain, the drain valve will automatically close when the Auto Fill button is pushed.

Step 2: Open the main water supply valve (if the machine is equipped with the Auto Fill option skip

to Step 3), then open the fill valve (see location on pages 24 - 26). Fill the machine to the top
of the scrap trays. The machine is equipped with a low water protection device and will

not run without sufficient water in the wash tank.

Step 3: With the circuit breakers in the control panel of the machine in the "OFF" position and the

main power supply to the machine connected, the ON-OFF switch on the button panel can be
turned to the "ON" position. This should light the amber power light. If not, check this bulb
and the other two bulbs to make certain they are tight.

Machines equipped with the Auto Fill option can now be filled by pressing the Auto Fill
button. (If the building pressure is quite high, some water may run out the overflow at the end
of the fill cycle).

Note: The machine has a door safety switch and will not operate with the door partially open.

Step 4: With the machine full of water and with the door closed, press the start button and let the
machine go through a complete cycle. The timers in the control panel will go through their
sequence, lighting the wash and rinse lights on the front of the machine. The cycle is

complete when the clear and red light go off and the amber light stays on. The pump will not
run at this time because the pump circuit breaker in the control panel is in the "OFF" position.

Step 5: Repeat Step 4 at least one more time or until water can be heard spraying out of the rinse
nozzles. This ensures that the rinse tank is full of water before the heating element is
energized.

Step 6: All circuit breakers in the control panel can now be switched to the "ON" position. This will
energize the heating system in the wash and rinse tanks.

Step 7: Check the pump for proper rotation by pressing the start button and observing the wash
pressure gauge on the front of the machine for 5 to 10 seconds. Then press the stop button.
The wash pressure should be 45 - 60 psi. If the pressure is erratic and only rises to about 25
psi, the pump is running backwards. The pump will also have a noticeable growl when
running backwards. The outside two wires that feed the power block in the control panel
should be reversed. Run the pump again to confirm that it is operating correctly.

11

LVO Manufacturing Inc.

LVO Manufacturing Inc.

LVO Manufacturing Inc. LVO Manufacturing Inc.

Rock Rapids, IA 51246

__________________________________________________________________________________________________________________________________________________________________

Step 8: With the power on, the wash and rinse heating systems should be checked. The rinse tank

should take 5 to 10 minutes to reach 195 F and the wash should take approximately 60
minutes to reach 150 F. The times will vary depending on the temperature of the incoming
water. Note: The rinse manifold gauge measures the temperature of the rinse water just
before it enters the machine. Therefore this temperature reading is only accurate while the
machine is rinsing.

If the machine is not reaching temperature check to make sure that all the breakers in the
control panel are in the "ON" position. If the wash tank is gas heated make certain that main
gas valve and the gas valve in the control panel are open. During initial start-up gas machines
may have to be turned on and off several times to bleed the air out of the gas lines. Wait
about a minute after turning the machine off before turning it back on. If the machine still
does not appear to be heating up properly call LVO Manufacturing at 1-800-346-5749.

Step 9: Adjust the pressure regulator (see location on pages 24 - 26). The pressure should be set at
20 psi on the rinse gauge while the machine is rinsing. Variations in building water pressure
may require the pressure to be increased or decreased from its factory setting.

Step 10: If the machine is equipped with the 700 cfm fan option (see page 8 for a description of the
fan option) check to make sure that it is rotating in the correct direction. If the fan is
blowing into the machine rather than out the vent the two outside wires on the three phase fan
connection in the control panel need to be swapped. Recheck to confirm proper rotation.

Step 11: Replace all covers and peel off the plastic protective coating and tape etc. from the machine
which may have been used to prepare the machine for shipping.

[phone]

808 N. 2nd Avenue E., P.O. Box 188

www.lvomfg.com

1-800-346-5749 Fax [phone]

12

LVO Manufacturing Inc.

LVO Manufacturing Inc.

LVO Manufacturing Inc. LVO Manufacturing Inc.

Rock Rapids, IA 51246

__________________________________________________________________________________________________________________________________________________________________

[phone]

808 N. 2nd Avenue E., P.O. Box 188

www.lvomfg.com

1-800-346-5749 Fax [phone]

Sequence of Operation

-Power switch "ON".

-LOGO logic control is energized.

-Fill button (optional) energizes fill solenoid.

-Low water safety switch closes terminals 1 and 4 in the control panel if there is sufficient water in the
wash tank.

-Amber indicator light comes on.

-Wash and rinse temp controls are energized.

-Temp controls energize wash and rinse heating systems.

-Door safety switch is energized.

-Stop and Start buttons are energized.

-Start button is pushed energizing the internal timing functions of the logic control.

-Red indicator light is energized

-Wash timer (Light, Medium, or Heavy) starts, energizing the pump contactor for set amount of
time.

-Wash time runs out energizing the rest timer.

-After set amount of rest time, the rinse timer starts, energizing the rinse solenoid valve and
clear indicator light.

-If the machine is equipped with the exhaust fan option, the fan timer runs for the set time when the
rinse times out.

-After the rinse timer (or optional fan timer) has timed out, all timers are reset, and the red/clear
indicator lights are de-energized.

13