LoLo ST-4G, ST-6G Operator's Manual

OPERATOR MANUAL

IMPORTANT INFORMATION, KEEP FOR OPERATOR

This manual provides information for:

Steamer

MODEL: ST-4G/6G

THIS MANUAL MUST BE RETAINED FOR FUTURE REFERENCE.
READ, UNDERSTAND AND FOLLOW THE INSTRUCTIONS AND
WARNINGS CONTAINED IN THIS MANUAL.

FOR YOUR SAFETY

Do not store or use gasoline or other ammable vapors
and liquids in the vicinity of this or any other appliance.

POST IN A PROMINENT LOCATION

Instructions to be followed in the event user smells gas.
This information shall be obtained by consulting your
local gas supplier. As a minimum, turn o the gas and
call your gas company and your authorized service agent.
Evacuate all personnel from the area.

WARNING

Improper installation, adjustment, alteration, service or
maintenance can cause property damage, injury or
death. Read the installation, operating and maintenance
instructions thoroughly before installing or servicing this
equipment.

NOTIFY CARRIER OF DAMAGE AT ONCE

It is the responsibility of the consignee to inspect the container upon receipt and
to determine the possibility of any damage, including concealed damage. LoLo
Commercial Foodservice Equipment suggests that if you are suspicious of dam­age to make a notation on the delivery receipt. It will be the responsibility of the
consignee to le a claim with the carrier. We recommend that you do so at once.

Manufacturer’s Service/Questions 877-246-5656

Information contained in this document is known to be current and accurate at the time of
printing/creation. LoLo Commercial Foodservice Equipment recommends referencing our product
line website, www.getLoLo.com, for current product information and specifications.

PART NUMBER 156071 Rev. C (08/13)

IMPORTANT - READ FIRST - IMPORTANT

WARNING: THE UNIT MUST BE INSTALLED BY PERSONNEL QUALIFIED TO WORK WITH ELECTRICITY/GAS AND
PLUMBING. IMPROPER INSTALLATION CAN CAUSE INJURY TO PERSONNEL AND/OR DAMAGE TO
THE EQUIPMENT. THE UNIT MUST BE INSTALLED IN ACCORDANCE WITH APPLICABLE CODES.

CAUTION: SHIPPING STRAPS ARE UNDER TENSION AND CAN SNAP BACK WHEN CUT.

CAUTION: DO NOT INSTALL THE UNIT IN ANY WAY WHICH WILL BLOCK THE REAR VENTS, OR WITHIN 2
INCHES OF A HEAT SOURCE SUCH AS A BRAISING PAN, DEEP FRYER, CHAR BROILER OR
KETTLE.

CAUTION: LEVEL THE UNIT LEFT-TO-RIGHT, AND PITCH IT SLIGHTLY TO THE FRONT, TO AVOID
DRAINAGE PROBLEMS.

WARNING: FOLLOW THE WIRING DIAGRAM EXACTLY WHEN CONNECTING A UNIT TO AVOID
DAMAGE OR INJURY. WIRING DIAGRAM IS LOCATED ON THE INSIDE OF THE RIGHT PANEL.

CAUTION: DO NOT USE PLASTIC PIPE. DRAIN MUST BE RATED FOR BOILING WATER.

CAUTION: DO NOT CONNECT THE DRAIN DIRECTLY TO A BUILDING DRAIN.

CAUTION: BLOCKING THE DRAIN IS HAZARDOUS.

IMPORTANT: IMPROPER DRAIN CONNECTION WILL VOID WARRANTY.

IMPORTANT: DO NOT ALLOW ANY WATER TRAPS IN THE DRAIN LINE. A TRAP CAN CAUSE PRESSURE TO
BUILD UP INSIDE THE CAVITY DURING STEAMING, WHICH WILL MAKE THE DOOR GASKET LEAK.

CAUTION: WHEN YOU OPEN THE DOOR, STAY AWAY FROM STEAM COMING OUT OF THE UNIT.
STEAM CAN CAUSE BURNS.

WARNING: BEFORE CLEANING THE OUTSIDE OF THE STEAMER, DISCONNECT THE POWER SUPPLY.
KEEP WATER AND CLEANING SOLUTIONS OUT OF CONTROLS AND COMPONENTS.
NEVER HOSE OR STEAM CLEAN ANY PART OF THE UNIT.

CAUTION: ALLOW COOKING CHAMBER TO COOL COMPLETELY BEFORE CLEANING.

CAUTION: USE MILD CLEANING AGENTS ONLY. CAREFULLY READ THE WARNINGS AND FOLLOW
THE DIRECTIONS ON THE LABEL OF EACH CLEANING AGENT. USE SAFETY GLASSES
AND RUBBER GLOVES AS RECOMMENDED BY CLEANING AGENT MANUFACTURER.

CAUTION: DO NOT PUT HANDS OR TOOLS INTO THE COOKING CHAMBER UNTIL THE FAN HAS
STOPPED TURNING.

CAUTION: DO NOT OPERATE THE UNIT UNLESS THE REMOVABLE RIGHT SIDE PANEL HAS BEEN
RETURNED TO ITS PROPER LOCATION.

IMPORTANT: DO NOT USE A CLEANING AGENT THAT CONTAINS ANY SULFURIC ACID, OR ANY
CHLORIDE, INCLUDING HYDROCHLORIC ACID. IF THE CHLORIDE CONTENT OF ANY
PRODUCT IS UNCLEAR, CONSULT THE MANUFACTURER. DO NOT USE A CLEANING OR
DELIMING AGENT THAT CONTAINS MORE THAN 30% PHOSPHORIC ACID.

IMPORTANT: DO NOT USE ANY DEGREASER THAT CONTAINS POTASSIUM HYDROXIDE OR SODIUM
HYDROXIDE OR THAT IS ALKALINE.

IMPORTANT: USE OF ANY REPLACEMENT PARTS OTHER THAN THOSE SUPPLIED BY LOLO COMMERCIAL
FOODSERVICE EQUIPMENT OR THEIR AUTHORIZED DISTRIBUTOR VOIDS ALL WARRANTIES AND
CAN RESULT IN BODILY INJURY TO THE OPERATOR AND DAMAGE THE EQUIPMENT. SERVICE BY
OTHER THAN FACTORY-AUTHORIZED PERSONNEL WILL VOID ALL WARRANTIES.

WARNING: HIGH VOLTAGE EXISTS INSIDE CONTROL COMPARTMENTS. DISCONNECT FROM BRANCH
CIRCUIT BEFORE SERVICING. FAILURE TO DO SO CAN RESULT IN INJURY OR DEATH.

2 OM-ST-4G/6G

IMPORTANT - READ FIRST - IMPORTANT

SAFETY PRECAUTIONS

Before installing and operating this equipment be sure everyone involved in its
operation are fully trained and are aware of all precautions. Accidents and problems
can result from a failure to follow fundamental procedures and precautions.

The following words and symbols, found in this manual, alert you to potential hazards
to the operator, service personnel or the equipment. The words are defined as follows:

DANGER: This symbol warns of an imminent hazard which will result in serious

injury or death.

WARNING: This symbol refers to a potential hazard or unsafe practice, which could

result in serious injury or death.

CAUTION: This symbol refers to a potential hazard or unsafe practice, which could

result in minor or moderate injury, or product or property damage.

NOTICE: This symbol refers to information that needs special attention or must be

fully understood even though not dangerous.

TO AVOID PROPERTY DAMAGE, PERSONAL INJURY OR DEATH,
SHUT OFF GAS BEFORE SERVICING THE UNIT.

TO AVOID PROPERTY DAMAGE, PERSONAL INJURY OR DEATH,

CHECK ALL JOINTS IN THE GAS SUPPLY LINE FOR LEAKS PRIOR
TO LIGHTING. USE SOAP AND WATER SOLUTION (BUBBLES). DO
NOT USE AN OPEN FLAME.

A. CHECK ALL JOINTS IN FRONT OF (BEFORE) THE GAS VALVE

BEFORE LIGHTING UNIT.

B. CHECK ALL JOINTS BEYOND THE GAS VALVE AFTER THE

UNIT IS LIT.

TO AVOID PROPERTY DAMAGE, PERSONAL INJURY OR DEATH,
ALL GAS JOINTS DISTURBED DURING SERVICING MUST BE
CHECKED FOR LEAKS. CHECK WITH A SOAP AND WATER
SOLUTION (BUBBLES). DO NOT USE AN OPEN FLAME.

This product is intended for commercial use only. Not for household use.

Local codes regarding installation vary greatly from one area to another.
The National Fire Protection Association, Inc., states in its NFPA96 latest edition that
local codes are “Authority Having Jurisdiction” when it comes to requirements for
installation of equipment. Therefore, installation should comply with all local codes.

IMPORTANT FOR FUTURE REFERENCE

Please record this information and retain this manual for the life of the equipment. For Warranty Service
and/or parts, this information is required.

Model Number Serial Number Date Purchased

OM-ST-4G/6G 3

Table of Contents

Important Warnings & Safety Precautions ........................................... 2-3

References.............................................................................................. 4

Equipment Description........................................................................... 5

Inspect for Shipping Damage .................................................................. 6

Uncrating ................................................................................................ 6

Installation Instructions ..................................................................... 7-10

Initial Start-Up........................................................................................ 11

Operation – General Steamer Use ...................................................... 1 2

Cleaning .........................................................................................13- 1 4

Maintenance ........................................................................................ 1 5

User Troubleshooting Guide ............................................................... 1 6

Parts Lists & Diagrams ................................................................... 17-2 6

Wiring Diagram .................................................................................... 2 7

References

NATIONAL FIRE PROTECTION ASSOCIATION
60 Batterymarch Park
Quincy, Massachusetts 02269

NFPA/70
The National Electrical Code

NFPA/54
The National Fuel Gas Code

NSF INTERNATIONAL
789 N. Dixboro Rd.
Ann Arbor, Michigan 48113-0140

INTERTEK (ETL)
1950 Evergreen Blvd, Suite 100
Duluth, GA 30096

4 OM-ST-4G/6G

Equipment Description

Congratulations on your purchase of LoLo commercial cooking
equipment. LoLo takes pride in the design and quality of our products.
When used as intended and with proper care and maintenance, you will
experience years of reliable operation from this equipment. To ensure
best results, it is important that you read and follow the instructions in
this manual carefully.

LoLo ST-4G and ST-6G gas-heated pressureless and boilerless steamers are designed
to be simple to use, steam foods quickly and provide years of trouble-free service. These
steamers have a boilerless steam system that uses two efficient infrared burners to
generate steam inside the cooking compartment, with an auto-fill water system and free
venting drain, which allows cooking compartment access at any time.

LoLo Steamers come standard with a rugged solid door with a continuous piano hinge
and easy-open hands-free latch; and a removable condensate drip pan mounted
below the door.

Simple operating controls include: a power-ON/OFF switch; (steamer) READY light;
60-minute mechanical timer that initiates steaming, with a continuous-steaming non­timed (ON) position. A simple valve/handle drains water from the reservoir at day’s
end. Hidden door-OPEN cutoff switch, upper and lower water fill-level valves, a high­limit switch and automatic gas valve & pressure regulator ensure safe and trouble­free operation.

The ST-4G model will hold up to four 2-1/2” deep steamer pans or two 4”deep pans.
The ST-6G model will hold up to six 2-1/2” deep steamer pans or three 4” deep pans.

KEY UNIT DIMENSIONS

US/metric

Dimension Model ST-4G Model ST-6G

Unit Width

Height

Unit Depth

Ship. Weight

20.4” 518 mm 20.4” 518 mm

24.6” 625 mm 31.5” 800 mm

29.5” 749 mm 29.5” 749 mm

220 lbs 100 kg 275 lbs 125 kg

Water & Drain Requirements

Water connection via:

Min. Water Pressure

Max. Water Pressure

Volume Minimum

Drain connection via

3/4" NH (hose)

30 PSI

60 PSI

1.5 gallon/min.

1.5” (38 mm) ID

POWER REQUIREMENTS

Electric Gas Service (via ½” NPT Fitting )

15 Amp Service Type: Natural Propane

Voltage

Phase

Hz

Amp Load

120

BTU/hr Firing Rate

1

Minimum pressure

60

2.5

Maximum pressure

Operating pressure

Model

ST-4G ST-6G ST-4G ST-6G

42,000 52,000 42,000 52,000

5” WC 12” WC 5” WC 12” WC

14” WC 14” WC 14” WC 14” WC

3.5” WC 4.25” WC 10.5” WC 10.5” WC

OM-ST-4G/6G 5

Inspect for Shipping Damage

All containers should be examined for damage before and during unloading. The
freight carrier has assumed responsibility for its safe transit and delivery. If the
equipment is received damaged, either apparent or concealed, a claim must be made
with the delivering carrier.

1. Apparent damage or loss must be noted on the freight bill at the time of

delivery. It must then be signed by the carrier representative (driver). If this is
not done, the carrier may reject the claim. The carrier can supply the necessary
claim forms.

2. Concealed damage or loss if not apparent until after the equipment is uncrated,

can also be claimed. However, a request for inspection must be made to the
carrier within 15 days. The carrier should arrange an inspection. Be certain to
retain all contents and packaging material.

USE CAUTION WHEN UNCRATING LOLO
EQUIPMENT. METAL AND PLASTIC BANDING
IS UNDER TENSION AND CAN SNAP BACK
WHEN CUT. WOOD PALLETS OR SKIDS CAN
CONTAIN SPLINTERS AND NAILS. SHIPPING
CARTONS CAN CONTAIN LARGE STAPLES.
WEAR GLOVES AND PROTECTIVE EYEWEAR
WHEN OPENING, MOVING AND DISPOSING
OF SHIPPING CONTAINERS.

THE LOLO STEAMERS ARE HEAVY, WEIGHING
220 OR 275 POUNDS (100-125 KG),
DEPENDING ON MODEL. OBTAIN HELP OR
USE APPROPRIATE MATERIALS-HANDLING
EQUIPMENT; AND USE CAUTION WHEN
REMOVING THE STEAMER FROM THE WOOD
PALLET.

Uncrating

1. Cut strapping or banding that closes the top of the cardboard shipping carton

and secures it to the wood pallet.

2. Lift carton straight up and off the steamer. Obtain help if needed.

3. Remove any Styrofoam blocking or wood bracing that protects unit from

shipping damage.

4. Cut strapping or banding that secures steamer to the wood pallet or skid.

5. Obtain help as needed, or use materials handling equipment, to lift the steamer

off and clear of wood pallet.

6. Remove any banding or tape used to secure the compartment door.

7. Pull off any grey/white plastic from stainless steel surfaces. This adhesive-

backed plastic protects surfaces for scratches during fabrication and shipping.

8. Dispose of cardboard carton, Styrofoam and wood pallet/skid by recycling.

6 OM-ST-4G/6G

THE UNIT MUST BE INSTALLED BY PERSONNEL
WHO ARE QUALIFIED TO WORK WITH
ELECTRICITY AND PLUMBING. IMPROPER
INSTALLATION CAN CAUSE INJURY TO
PERSONNEL AND/OR DAMAGE TO THE
EQUIPMENT. THE UNIT MUST BE INSTALLED IN
ACCORDANCE WITH APPLICABLE CODES.

THE UNIT MUST BE INSTALLED BY A
LICENSED PLUMBER OR GAS FITTER WHEN
INSTALLED WITHIN THE COMMONWEALTH OF
MASSACHUSETTS.

Installation Instructions

Install the steamers in a well-ventilated room positioned under a Type I ventilation
hood. Remove any items that might obstruct or restrict the flow of air for combustion
or ventilation. Clear all combustible material from the area directly around the unit.

MINIMUM CLEARANCES

LoLo steamer requires the following minimum clearances to any surface, combustible
or non-combustible:

• 2” (51 mm) on both sides

• 6” (152 mm) on rear/back

Steam Free Zone: The steamer can be damaged by steam from external sources. Do
not install the steamer over a steam venting drain. Ensure that steam is not present
in an area bounded by the footprint of the steamer and a circle 18 inches in radius
around the right rear corner of the steamer (See Diagram 7-1 at left).

DO NOT INSTALL THE UNIT WITH THE REAR
VENTS BLOCKED OR WITHIN 2 INCHES OF A
HEAT SOURCE SUCH AS A BRAISING PAN, DEEP
FAT FRYER, CHARBROILER OR KETTLE.

18 -inch

radius

mm

457

STEAM
FREE
ZONE

TOP VIEW

FRONT OF UNIT

Diagram 7-1

Install and operate this gas appliance in a well ventilated area. Adequate air must be
supplied to replenish the air used for combustion. The ventilation system must employ
a vent hood and exhaust fan with no direct connection between the duct and the
steamer flue. Installation must conform with local codes and/or with the National Fuel
Gas Code, ANSI Z223.1/NFPA-54 (latest edition) or the National Gas and Propane Code
CSA B149.1 as applicable.

Any item which might obstruct or restrict the flow of air for combustion and ventilation
must be removed. Do not obstruct the flue cover or rear vents after installation.

ELECTRICAL SUPPLY CONNECTION

Provide 115 VAC, 60 HZ, 1 PH, 15 AMP service. Bring supply line in through hole in the
lower left back panel. Each steamer requires a separate electric supply connection.

Local codes and/or the National Electrical Code should be observed in accordance
with ANSI/NFPA 70. IMPORTANT: AN ELECTRICAL GROUND IS REQUIRED. The wiring
diagram is located in the service compartment and on page 27 of this manual. Maxi­mum load is 2.5 AMPs.

In Canada, provide electrical service in accordance with the Canadian Electrical Code,
CSA C22.2 Part 1 and/or local codes.

THE AREA DIRECTLY AROUND THE
APPLIANCE MUST BE CLEARED OF ALL
COMBUSTIBLE MATERIAL. FAILURE TO
FOLLOW THESE INSTRUCTIONS CAN
CAUSE BODILY INJURY AND/OR PROPERTY
DAMAGE.

OM-ST-4G/6G 7

Installation Instructions

IMPORTANT

IN CANADA, THE INSTALLATION MUST
CONFORM TO THE CANADIAN GAS CODE,
CAN 1-B149, INSTALLATION CODES FOR GAS
BURNING APPLIANCES AND EQUIPMENT AND/
OR LOCAL CODES.

GAS SUPPLY CONNECTION

Connection to the gas supply shall be in accordance with the charts and instructions
below.

Model NPT Pipe Size Required

ST-4G 1/2”

ST-6G 1/2”

Pressure Ratings for Gas (measured on top of gas valve)

Model BTU/hr. Operating

Pressure

ST-4G NG

ST-4G LP

ST-6G NG

ST-6G LP

NG = Natural Gas, LP = Liquid Petroleum Gas

42,000 3.5” WC 5” WC 14” WC

42,000 10” WC 12” WC 14” WC

52,000 3.5” WC 5” WC 14” WC

52,000 10” WC 12” WC 14” WC

After the unit has been connected to the gas supply, all pipe joints must be checked
for leaks. Do NOT use a flame checking for leaks. A thick soap solution or other suit­able leak detector should be used.

Minimum

Incoming Gas

Feed Rate

Maximum

Incoming Gas

Feed Rate

For a Unit on casters:

1. The installation shall be made with a connector that complies with the standard
for connectors for movable gas appliances; ANSI Z21.69.CSA 6.16, and a quick­disconnect device that complies with the standard for quick-disconnect devices
for use with gas fuel, ANSI Z21.41.CSA 6.9.

2. Adequate means must be provided to limit the movement of the appliance
without depending on the connector and the quick-disconnect device or its as­sociated piping to limit the appliance movement.

3. The location where the restraining device may be attached to the appliance
shall be in accordance with specifications for the device.

WATER CONNECTION(S)

Install a check valve to prevent back flow into the incoming cold water line, as re­quired by local plumbing codes. Water pressure in the line should be between 30 and
60 PSI. If pressure is above 60 PSI, a pressure regulator should be installed. These
pressures must provide a delivery rate of 1.5 gallons per minute, which is required for
proper steamer operation.

A 3/4 inch female NH connector (garden hose type) is used to attach the water supply
to the inlet valve. Minimum inside diameter for the water feed line is 1/2 inch. Use a
rubber washer in the hose connection. Do not allow the connection to leak, no matter
how slowly. IMPORTANT: Do not over-tighten hose connections.

8 OM-ST-4G/6G

This equipment must be installed to comply with the basic plumbing code of the
Building Officials and Code Administrators International, Inc. (BOCA) and the Food
Service Sanitation Manual of the Food and Drug Administration (FDA).

Installation Instructions

DO NOT CONNECT THE DRAIN DIRECTLY
TO A BUILDING DRAIN. BLOCKING THE DRAIN
IS HAZARDOUS.

DO NOT USE PLASTIC PIPE FOR THE DRAIN
LINE.. DRAIN MUST BE RATED FOR BOILING
WATER FOR THE DRAIN LINE..

Diagram 9-1
Improper Drain
Line Connection

DRAIN CONNECTION

Model Drain ID Hose Size Required

ST-4G 1.5”

ST-6G 1.5”

Level the steamer left-to-right, and pitch it slightly to the front (maximum 1/4”) by
adjusting the optional legs or the bullet feet on the optional stand.

There must be a free air gap between the end of the drain hose and the building drain.
The air gap should be as close as possible to the unit drain. There should be no other
elbows or other restrictions between the unit drain and the air gap.

Install the drain line with a constant downward pitch (See Diagram 9-1 at left).

IMPORTANT: Do not allow water traps in the line. A trap can cause pressure
build-up in the cooking compartment, which may cause the door gasket to leak.

For a proper drain line connection, the drain must have a constant downward pitch of
at least 1/4” per foot. Observe local code regarding air gap spacing and drain connec­tions.

STAND-STACKED UNITS

This section is applicable only if you are installing two steamers on the optional LoLo
support stand. Installation of stand-stacked steamers is similar to installing a single
unit. The steamers are positioned on the top and bottom shelf provided with LoLo
steamer stands.

Diagram 9-2

1. Water Connections
Separate water supply connections must be provided for each unit. At each wa-

ter inlet valve a 3/4” female NH connector (garden hose type) is used for each
water supply.

2. Electrical Supply Connections
Separate electrical connections are required for each steamer on the stand.

Each steamer unit must have its own branch circuit protection.

3. Gas Connection
Separate gas connections are required for each steamer. Gas supply must be

adequate for both units as listed on page 8.

4. Drain Connection
Steamers must be leveled left-to-right, and pitched to the front (maximum 1/4”)

by adjusting the bullet feet on the stand. Make sure both steamer drain connec­tions are free-venting and slope continuously to the floor drain.

OM-ST-4G/6G 9

Installation Instructions

DO NOT PLACE A LOLO STEAMER ON
A CONVENTIONAL UNDERCOUNTER
REFRIGERATOR. THEY ARE NOT DESIGNED
TO SUPPORT THE WEIGHT OR INSULATED
AGAINST THE HEAT PRODUCED BY THE
STEAMER. FAILURE TO USE A PURPOSE­BUILT REFRIGERATED EQUIPMENT STAND
COULD RESULT IN REFRIGERATOR FAILURE,
UNSAFE OR SPOILED FOOD AND EVEN
MELTED PLASTIC COMPONENTS IN THE
REFRIGERATOR.

5. Stacked Flue Kit
IMPORTANT: If two LoLo Gas Steamers are to be “stacked” on the same

(optional) stainless steel support stand, the LoLo Stacked Flue Kit (P/N 156599)
must be supplied and installed. Failure to install the Flue Kit can result in heat
or steam damage to the upper Steamer.

The LoLo Stacked Flue Kit (P/N 156599) is designed to shield and divert flue

gases and heat from the bottom steamer past the top steamer toward the
ventilation hood. A compartment steam vent extension is also provided, to divert
lower unit (compartment venting) steam past the upper unit rear panel vents.

NOTE: For Stacked Flue Kit Installation, follow step-by-step instructions pro-

vided with the (P/N 156599) Kit.

COUNTER-MOUNTED UNITS

This section is applicable if the steamer will be flush mounted to a counter. All four
edges of the bottom of the steamer must be sealed with RTV silicon sealant to the
counter if optional 4 inch legs are not used. Counter must be made of a noncom­bustible material such as metal or tile.

REFRIGERATED STAND-MOUNTED STEAMERS

IMPORTANT: Do not mount a LoLo Steamer on a conventional undercounter refrigera-

tor. Steamers must be placed on a refrigerated equipment stand, such as the LoLo
LRES Series, which are specifically designed to support the weight of heavy cooking
equipment; and heavily insulated to resist the heat generated by a working steamer.

10 OM-ST-4G/6G

Initial Start-Up

WHEN YOU OPEN THE DOOR, STAY AWAY
FROM STEAM COMING OUT OF THE UNIT.
STEAM CAN CAUSE BURNS.

Photo 11-1

Drain valve handle in CLOSED position.

After the LoLo steamer has been installed, test it to ensure that the unit is operating
correctly.

1. Remove all literature and packing materials from the interior of the unit.

2. Make sure the water supply line is open and the drain valve handle is in the
closed position (6:00 o’clock).

3. Make sure that the gas supply line is open and that the manual knob on the
main gas shutoff valve is turned to the ON position. This valve is at the rear on
the right side of the unit.

4. Turn on electrical service to the unit. The steamer will not operate without
electrical power. IMPORTANT: Do not attempt to operate the unit during a
power failure.

5. To turn unit on, press the ON/OFF switch to the ON position. The green light in
the switch will come on.

6. When the steam generating reservoir has filled with water, the main burners
will ignite, only when the timer is in the ON position or in the TIMING
position. Within 15 minutes or less, the READY light will come on, indicating
that the water has reached its standby temperature. When the READY light
comes on, you may take one of the following steps:

• Set the timer knob to the desired steaming time.

• Leave timer knob in the ON position for continuous steaming.

• Set the timer knob to the OFF position to put the steamer into idle mode.

Photo 11-2

7. To shut down the unit, press the ON/OFF switch to the OFF position. Wait 30
minutes and rotate the drain valve handle to 9:00 o’clock (open) position to
drain the water reservoir.

8. If the steamer operates as described, the unit is functioning correctly and ready
for use.

NOTE: For operation at high altitudes of 2000 feet above sea level and higher, please
consult the LoLo Commercial Foodservice Equipment Engineering Department.

OM-ST-4G/6G 11

Operation – General Steamer Use

WHEN YOU OPEN THE DOOR, STAY AWAY
FROM STEAM COMING OUT OF THE UNIT.
STEAM CAN CAUSE BURNS.

Photo 12-1

CONTROLS

Operator controls are on the front, just right of compartment door. The control panel
includes the following:

1. The POWER ON/OFF switch activates the steamer, filling it with water and
turning on the gas burners to heat the water. It also shuts the steamer OFF. (See
Photo 11-2 on page 11)

2. The READY indicator light shows that the steam generating reservoir is at
standby temperature and the cavity is hot enough to begin steaming.

3. The Timer which is used in three ways:

• In the OFF position the steamer stays READY for steaming.

• When a cook time is set (between 1-60 minutes), the unit steams until

the timer times down to DONE. At that time, steaming stops and a
beeper sounds until the user turns the knob to another position.

• With the timer turned to the ON position, the unit steams continuously.

OPERATING PROCEDURES

1. Press the ON/OFF switch located on the control panel. The steam generating
reservoir will fill. Rotate timer knob to the ON position. In approximately 10-15
minutes the READY light above the timer will come on.

2. Load food into pans in uniform layers. Pans should be filled to about the same
level and should be level on top. This will help ensure consistent pan-to-pan
cooking consistency.

Slide steamer pans on to pan
supports (Model ST-4G shown)

Photo 12-2

3. Open the door and slide the pans onto the supports. TIP: If you will only be
steaming one pan, put it in the middle support rail position.

4. Close the door. With the READY indicator lit, you can initiate:

• TIMED STEAMING: If you want to steam the food for a certain length of

time, set the timer for that period. The timer will automatically run the
steamer for the set time and a beeper will sound when the cook time is
complete. Steam production stops when the timer is turned to OFF.

• CONTINUOUS STEAMING: If you want to steam continuously, turn the

timer to the ON position. The unit will continue steaming until you stop it
by turning the timer to OFF. IMPORTANT: When steaming continuously,
YOU MUST CONTROL STEAMING TIME.

5. At the end of the cook time, open the door. Remove the pans from the steamer,
using hot pads or oven mitts, to protect your hands from the hot pans.

NOTE: You can open the door at any time to check progress, season or stir

food. When the compartment door is opened, a switch will cut power to the
steam generator, but steam will still roll out of the compartment. IMPORTANT:
Open the door a crack and allow steam to vent before fully opening the
compartment door.

6. To shut down the unit, press the ON/OFF rocker switch to OFF.

NOTE: The steamer was designed to drain only when the manual drain is

opened.

12 OM-ST-4G/6G

7. At end of day or if the steamer will not be needed, open the steamer drain valve
handle to the 9:00 o’clock position, to drain the water from the steam generator.
(See Page 13 for CLEANING INSTRUCTIONS)

Cleaning

DISCONNECT THE POWER SUPPLY BEFORE
CLEANING THE OUTSIDE OF THE STEAMER.

KEEP WATER AND CLEANING SOLUTIONS
OUT OF CONTROLS AND ELECTRICAL
COMPONENTS. NEVER HOSE OR STEAM
CLEAN ANY PART OF THE UNIT.

AVOID CONTACT WITH ANY CLEANERS,
DELIMING AGENT OR DEGREASER AS
RECOMMENDED BY THE SUPPLIER. MANY
ARE HARMFUL. READ THE WARNINGS AND
FOLLOW THE DIRECTIONS!

EVEN WHEN THE UNIT HAS BEEN SHUT
OFF, DON’T PUT HANDS OR TOOLS INTO THE
COOKING CHAMBER UNTIL IT HAS COOLED.

IMPORTANT

DON’T USE ANY CLEANING AGENT THAT
CONTAINS ANY SULFURIC AGENT OR ANY
CHLORIDE, INCLUDING HYDROCHLORIC ACID
(HCL). TO CHECK FOR CHLORIDE CONTENT
SEE ANY MATERIAL SAFETY DATA SHEETS
PROVIDED BY THE CLEANING AGENT
MANUFACTURER.

To keep your steamer in proper working condition, use the following procedures to
clean the unit. This regular cleaning will reduce the effort required to clean the steam
generator and cavity.

SUGGESTED CLEANING SUPPLIES

1. Mild detergent

2. Stainless steel exterior cleaner Spray DeGreaser

3. Cloth or sponge

4. Brush with soft bristles

5. Spray bottle

6. Measuring cup

7. Nylon pad

8. Towels

9. Plastic disposable gloves

10. Funnel

CLEANING PROCEDURES

1. Exterior Cleaning
A. Prepare a warm solution of mild detergent as instructed by the supplier.

Wet a cloth with this solution and wring it out. Use the moist cloth to
clean the outside of the unit. Do not allow freely running liquid to touch
the controls, the control panel, any electrical part, or any louver on the
rear panels.

B. To remove material which may be stuck to the unit, use a fiber brush or a

plastic or rubber scraper with a detergent solution.

C. Stainless steel surfaces may be polished with a recognized stainless

steel cleaner.

2. Cooking Compartment Cleaning

Daily cleaning must be done in order to enhance performance and prolong the

life of your steamer.

IMPORTANT

DO NOT USE ANY METAL MATERIAL
(SUCH AS METAL SPONGES) OR METAL
IMPLEMENTS (SUCH AS A SPOON, SCRAPER
OR WIRE BRUSH) THAT MIGHT SCRATCH ANY
STAINLESS STEEL SURFACE. SCRATCHES
CAN MAKE THE SURFACE HARDER TO CLEAN
AND PROVIDES PLACES FOR BACTERIA TO
GROW. DO NOT USE STEEL WOOL, WHICH
MAY LEAVE PARTICLES EMBEDDED IN THE
SURFACE, WHICH COULD EVENTUALLY CAUSE
CORROSION AND PITTING.

A. Press POWER switch to turn steamer OFF and open steamer door.
IMPORTANT: Allow the steamer to cool completely before cleaning.

B. Remove optional water grate, if used. It can be washed in a dish ma-

chine.

C. Remove left and right pan supports by lifting rack up and pulling away

from cavity wall. They can be washed in a dish machine.

D. Use a mild detergent to wipe down the entire steamer cavity to remove

food and water scale particles. Carefully clean float probes if food resi­due or loose scale is present. NOTE: A thin layer of tightly bound scale
is normal and will not affect steamer performance. If scale is excessive,
then refer to deliming instructions that follow.

E. Clean right front drain opening thoroughly to remove any build-up of

debris.

F. Replace pan supports and water grate, if used. Steamer is now cleaned

and ready to use.

OM-ST-4G/6G 13

Cleaning

ALLOW THE STEAMER TO COOL
COMPLETELY BEFORE CLEANING. HOT
SURFACES CAN CAUSE SEVERE BURNS.

IMPORTANT

FAILURE TO CLEAN THE STEAMER AS
SPECIFIED COULD DEGRADE
THE PERFORMANCE OF THE STEAMER.

HIGH WATER FLOAT

(SWINGS UP)

3. Cooking Compartment Deliming

When using a Water Treatment System use vinegar as a deliming agent. LoLo

Commercial Foodservice Equipment approved delimer may be used to remove
excessive scale build-up.

a. Following all Cooking Compartment cleaning steps A through E on page

13, turn steamer on and allow water to enter steamer compartment.

b. Pour 1 cup of white vinegar or delimer into steamer compartment and

shut door.

c. Set timer to 30 minutes and allow steam cleaning to occur.

d. After the 30 minute cleaning cycle is complete, turn OFF steamer and

allow it to cool completely.

e. Open steamer door and wipe down the entire steamer cavity to remove

any loose scale particles. Carefully clean float probes if loose scale is
present. (See Diagram 14-1, at left)

f. Replace pan supports and water grate. Steamer is now descaled and

ready to use.

LOW WATER FLOAT

(SWINGS DO WN)

Diagram 14-1

Inside view of steamer cavity with no water
present. NOTE: High level float probe swings up.

14 OM-ST-4G/6G

Maintenance

USE OF ANY REPLACEMENT PARTS OTHER
THAN THOSE SUPPLIED BY LOLO COMMERCIAL
FOODSERVICE EQUIPMENT OR THEIR
AUTHORIZED DISTRIBUTORS CAN CAUSE INJURY
TO THE OPERATOR AND DAMAGE TO THE
EQUIPMENT AND WILL VOID ALL WARRANTIES.

IMPORTANT

SERVICE PERFORMED BY OTHER THAN FACTORY­AUTHORIZED PERSONNEL WILL VOID ALL
WARRANTIES.

NOTE: The steamer must be disconnected

from the gas supply system during any
pressure testing of that system which
tests pressures in excess of 1/2 PSI (3.45
kPa).

The LoLo steamer is designed for minimum maintenance and no user adjustments
should be necessary. Certain parts may need replacement after prolonged use. If
there is a need for service, only LoLo Authorized Service Agents should perform the
work.

STEAM LEAK-DOOR ADJUSTMENT

If steam or condensate is seen leaking from around the door, take the following steps:

1. Check the door gasket. Replace it if it is cracked or split.

2. Inspect the cooking chamber drain to be sure it is not blocked.

3. Check drain line to ensure it is free-venting, not clogged, kinked or restricted in
any way.

4. Adjust the door latch pin to allow for changes that might occur as the
gasket ages. To adjust door:

• Loosen the lock nut at the base of the latch pin, then turn the latch pin

1/4 turn clockwise, and tighten the lock nut.

• After adjustment, run the unit to test for steam leakage.

• If there is still leakage, repeat the adjustment.

• Continue adjusting the pin clockwise until the door fits tightly enough to

prevent leakage. The door hinge may also be adjusted.

Photo 15-1
Latch pin is threaded to change
depth. Lock nut secures it at that depth.

OM-ST-4G/6G 15

User Troubleshooting Guide

Your LoLo steamer is designed to operate smoothly and efficiently if properly maintained. However, the following is a list of checks
to make in the event of a problem. Wiring diagrams are furnished inside the right side service access panel. If an item on the
check list is marked with and (X), it means that the work should be done by an a LoLo Authorized Service Agent. CAUTION: USE

OF ANY REPLACEMENT PARTS OTHER THAN THOSE SUPPLIED BY LOLO COMMERCIAL FOODSERVICE EQUIPMENT OR THEIR
AUTHORIZED DISTRIBUTORS CAN CAUSE INJURY TO THE OPERATOR AND DAMAGE TO THE EQUIPMENT AND WILL VOID ALL
WARRANTIES.

SYMPTOM WHO WHAT TO CHECK or DO

No power. User a. Check wall outlet circuit breaker.

b. Disconnect power, then check fuses inside steamer. X
c. Call service technician.

Unit overlls with water at start-up. User a. Clean probes in unit.

b. Check oat probe orientation.
c. Clean drain strainer.
d. Call service technician.

Steamer does not ll with water. User a. Is the ON switch depressed?

b. Is the water supply connected?
c. Is the water turned on?
d. Is the water supply hose kinked or obstructed?
e. Check for low water pressure (less than 30 PSI) or low water
ow (less than 1.5 gpm).
f. Is the screen at the water connection clogged?

No steam. User a. Is the ON switch depressed?

b. Is the water supply connected?
c. Is the water turned on?
d. Is steamer door completely closed?
e. Is timer set to either ON position or TIMING position?

Any unusual operation. User a. Press ON/OFF switch to turn steamer o. Momentarily turn

circuit breaker o and then turn unit back on.

Door pops open. User a. Ensure drain and vent are not plugged. No more than two

units should be attached to a single drain line.
b. Check door pin adjustment. The door pin is threaded and can be backed
out to catch latch. (See Maintenance Section on page 15)
c. Call service technician.

16 OM-ST-4G/6G

Parts List & Diagram

6

6

2

6

6

11

13

11

6

4-Pan Cabinet & Flue Assembly

Item

no.

1

2

3

4

Description

RACK, LID SUPPORT
LEFT PAN

PANEL, LEFT SIDE
WELDMENT

PANEL, RIGHT SIDE
WELDMENT

WELDMENT, TOP
COVER

Part

number

156340

156503

156502

156396

5 TRAY, DRIP 094151

SCREW, TRS HEAD

11

6

10-32 x 3/8 (QTY 18)

SHOULDER SCREW -

7

DRIP TRAY (QTY 2)

RACK, LID SUPPORT

8

RIGHT PAN

WELDMENT, CAVITY

9

VENT NO VACUUM

WELDMENT, FLUE
STACK

004173

070467

156339

145297

156429

13 COVER, FLUE 156426

4

6

6

7

5

7

6

3

6

6

11

13

2

6

6

6

11

6

OM-ST-4G/6G 17

Parts List & Diagram

6 6

6

6

9

2

12

13

6

6-Pan Cabinet & Flue Assembly

Item

no.

1

Description

RACK, LID SUPPORT
LEFT PAN

Part

number

156357

2 PANEL SIDE LEFT 156152

3 PANEL SIDE RIGHT 156151

WELDMENT, TOP

4

COVER

156396

5 TRAY DRIP 094151

SCREW, TRS HEAD

11

6

10-32 x 3/8 (QTY 18)

SHOULDER SCREW -

7

DRIP TRAY (QTY 2)

RACK, LID SUPPORT

8

RIGHT PAN

WELDMENT, CAVITY

9

VENT NO VACUUM

BRACKET, FLUE (QTY

2)

004173

070467

156358

145297

142810

12 COVER, FLUE 156473

13

WELDMENT, FLUE
STACK

156472

4

6

6

7

5

3

7

6

6

6

6

6

13

12

6 6

9

6

2

6

18 OM-ST-4G/6G

6

Parts List & Diagram

6

7

1

5

5

8

2 3

4

5

5

5

5

9

A

A

4-Pan Door Assembly

Item

no.

1

Description

PANEL FRONT DOOR
ASSY

Part

number

156392

2 LATCH, ASM 156390

GASKET, DOOR

3

SILICONE

156388

4 PANEL, DOOR INSIDE 156387

SCREW TRUSS HEAD

5

MACHINE (QTY 6)

SCREW, HEX HEAD

6

CAP, 1/4” - 20 (QTY 2)

005764

005608

7 HANDLE ASSY DOOR 070123

8 HINGE, DOOR 130868

CAM DOOR UNLATCH

10

9

LIFT

SCREW 8-32 x .375
LG PHILLIPS (QTY 2)

074252

129732

2 3

5

A

5

9

1

7

4

5

8

5

A

5

6

5

10

10

SECTION A-A

SCALE 1 : 2

OM-ST-4G/6G 19

7

15

10

9

11

12

14

3

1

4

2

TORQUE 18-20 IN. Lbs
TYP. ALL SCREWS

ITEM NO. QTY. PART NO. DESCRIPTION

B

B

SECTION B-B

SEE NOTE 1

8

6

9

ITEM (13) APPLIED ON CA M AS
SHOWN AND BETWEEN CAM AND
INNER SIDE OF FRONT DOOR

4

HINGE AND PIN TO BE COATED WITH
ITEM 13 (NEVER SEEZ GREASE)

5 15

Parts List & Diagram

SECTION B-B

SEE NOTE 1

8

6

9

ITEM (13) APPLIED ON CA M AS
SHOWN AND BETWEEN CAM AND
INNER SIDE OF FRONT DOOR

4

SEE NOTE 1

8

6

9

ITEM (13) APPLIED ON CA M AS
SHOWN AND BETWEEN CAM AND
INNER SIDE OF FRONT DOOR

4

HINGE AND PIN TO BE COATED WITH
ITEM 13 (NEVER SEEZ GREASE)

5

15

6-Pan Door Assembly

Item

no.

1

Description

PANEL, FRONT DOOR
ASSEMBLY

Part

number

140750

2 GASKET 140748

3 PANEL, DOOR INSIDE 140751

SCREW, 8-32 X 3/8”

4

PHIL HEAD (QTY 8)

SCREW, HEX HEAD

5

CAP, 1/4”-20 (QTY 2)

127179

005608

6 HANDLE 129723

7 HINGE, DOOR 140755

CAM, DOOR

8

UNLATCH LIFT

074252

9 LATCH ASSEMBLY 140752

10

SPACER FOR DOOR
(QTY 4)

071206

11 INSULATOR BOARD 140754

12

BLOCK AND MAGNET
ASSEMBLY

069762

7

20 OM-ST-4G/6G

Water & Drain Systems

RIGHT SIDE VIEW

Diagram

OM-ST-4G/6G 21

Parts List

Water & Drain Systems

Item

no.

1 COMMON ELECTRICAL ASSY 156467

2 WELDMENT, DRAIN MANIFOLD ASSY 156483

3 HOSE, SHORT VENT 147566

4 CLAMP, HOSE, CONSTANT TENSION (QTY 2) 127525

5 HOSE, SHORT STEAM INLET 140164

6 CLAMP, CONSTANT TENSION CTB-27 (QTY 4) 138457

7 VALVE WATER FEED 3/4” R 071235

8 NUT HEXHEAD KEPS 10-32 071256

9 CLAMP HOSE LOW PRESSURE (QTY 6) 093482

10 HOSE BLACK RUBBER 3/8” ID X 10” LG 505090

11 TEE, 1/2” NPT - BRASS 013650

12 ELBOW, 90 DEG 1/2 MPT X 3/8 139126

Description Part number

13 ELBOW 1/2” NPT TO 3/4 HOSE BARB 90 DEG 142548

15 NUT, HEXAGON 3/8-24 012809

16 HANDLE, SHAFT 141668

17 SHAFT, DRAIN ACTUATOR 156479

18 BRACKET, DRAIN VALVE CONNECTION GVR-0002

19 HOSE, STEAM UNIT 18” LONG 125954

20 CLEAR 3/8 HOSE 092124

21 REDUCER, WATER FLOW, .110 ID 144481

22 REDUCER, FLOW 147371

23 DRAIN THERMOSTAT 156487

24 NUT HEXAGON KEPS 4-40 (QTY 2) 071297

22 OM-ST-4G/6G

Parts List & Diagram

2

2

13

12

14

14

14

15

15

7

6

9

17

18

DETAIL C

SCALE 1 : 3

16

16

19

2

2

13

11

10 8

12

14

14

14

15

15

7

6

9

3

1

4

5

5

8

7

6

33

C

11

10 8

12

14

14

14

15

15

7

6

9

17

18

DETAIL C

SCALE 1 : 3

16

16

19

ITEM NO. PART NUMBER DESCRIPTION QTY.

1 156404 CONTROL PANEL ASSEMBLY GAS 1
2 069789 SCREW HEX SLOTTED HD W/WASHER #8-32 X 3/8" 2
3 144110 SCREW, #8 X 1/2 HEX HD SLOT MACHINE SELF ZINC 5

2

2

13

Common Electrical System Components

Item

no.

1

Description

CONTROL PANEL
ASSEMBLY GAS

Part

number

156404

SCREW HEX SLOTTED

2

HD W/WASHER #8-32

069789

X 3/8” (QTY 2)

SCREW, #8 X 1/2 HEX

3

HD SLOT MACHINE

144110

SELF ZINC (QTY 5)

4 SWITCH, DOOR 096857

SCREW #4-40 X 1/4”

5

HEX MS (QTY 2)

096841

6 FLAME SENSOR 156501

IGNITER, HOT

7

8

SURFACE

TIMER STEAMER
(ATMOSPHERIC)

143559

096826

POWER SWITCH,

9

WITH GREEN

155548

INDICATOR LIGHT

10 KNOB, TIMER 123100

11

12

13

14

15

16

LIGHT, INDICATOR
AMBER

FAN, 24VDC MUFFIN
80MM

GUARD, 80MM FAN,
PLASTIC

NUT, 6-32 LOCK
INSERT (QTY 4)

SCREW, 6-32 X 2 LG
HEX HD SLOT (QTY 4)

PROBE, FLOAT
BLACK (QTY 2)

116384

153505

143664

119855

140182

149880

17 THERMOSTAT 144484

18

19

20

PLATE, READY
SENSOR

THERMOSTAT, CLOSE
180 DEG F

COVER, VIEW PORT,
COMBUSTION
CHAMBER

156400

156491

145035

RIGHT SIDE VIEW

REAR VIEW

OM-ST-4G/6G 23

Parts List & Diagram

10 1

Electric Control Panel Assembly

Item

no.

1

Description

PANEL, HIGH
VOLTAGE ASSEMBLY

Part

number

156404

2 TERMINAL BLOCK 2P 069789

40VA TRANSFORMER,

3

120VAC PRI, 24VAC

144110

SEC

4 FUSEBLOCK 1 POLE 096857

MECHANICAL LUG,

5

GROUND, #2-#8

096841

6 RELAY, 24 VAC DPST 156501

7 RELAY, 24 VAC DPDT 143559

SCREW ROUND HEAD

8

8-32 1-1/4”

096826

SCREW HEX SLOTTED

9

HD W/WASHER #8-32

155548

X 3/8” (QTY 9)

10 SCREW, 6-32 (QTY 2) 123100

11 IGNITION MODULE 116384

12 BEEPER 153505

13

14

SCREW HEX
SLOTTED

RECTIFIER 208/240V
POWER TILT

143664

119855

ST-4G/6G W/FLOAT

15

120 VAC HARNESS

140182

(NOT SHOWN)

ST-4G/6G W/FLOAT 24

16

VAC HARNESS (NOT

149880

SHOWN)

17 FUSE, 6 AMP 144484

1110

9 1413

9

7

9

6

9

24 OM-ST-4G/6G

10 1

12

17

4

5

3

8

2

Parts List & Diagram

Gas Piping Assembly

Item

no.

1 VALVE, GAS 1/2” 098458

2

3

4

5

6

8 UNION 1/2” NPT 004186

9 NIPPLE 1/2” NPT X 8” 005557

10 NIPPLE 1/2” NPT X 6” 008638

11

12 GAS VALVE BRACKET 156505

13

14 U BOLT, 3/4” PIPE N87786

Description

VALVE GAS JOHNSON
CONTROLS NAT

ELBOW 90 DEG
STREET

ELBOW 90 DEG 1/2”
NPT

NIPPLE 1/2” NPT X
3-1/2” BLK

BUSHING REDUCING,
HEXAGON 1/2” X 3/8”

CONNECTOR MALE
MPT X 3/8”

NUT, HEX KEPS 1/4” ­20 (QTY 2)

Part

number

098443

004185

008747

008227

007442

050879

012940

1

9

8

10

12

4

13

11

5

6

2

3

14

OM-ST-4G/6G 25

4

1

2

3

5

NOTE:

1. 4-PAN GAS ORIFICE IS
156508 NAT. 0'-2000', SIZE 0.092

Parts List & Diagram

Gas Burner Assembly

Item

no.

1

2

3

4

5

Description

ELBOW 90 DEG
REDUCING

ELBOW 90 DEG
STREET

CONNECTOR MALE
3/8”

INFRARED BURNER
(QTY 2)

ORIFICE IGNITER,
.104 (QTY 2)

Part

number

005680

042364

050879

143976

156506

26 OM-ST-4G/6G

Wiring Diagram

OM-ST-4G/6G 27

5925 I-55 South • Byram MS 39272

877-2GO-LOLO (877-246-5656) • Fax [phone]

www.getLoLo.com

© 2013 LoLo Commercial Foodservice Equipment. All Rights Reserved.

PART NUMBER 156071 Rev. C (08/13)