SJE OPTIMA DM Series User manual

Published by SJE Corporation, Ltd.
© 2022 by SJE Corporation, Ltd.
78-21 Sandan 7-ro, Jeonggwan-Eup, Gijang-Gun,
Busan, South Korea
Tel: [phone]
Fax: [phone]
Website: http://www.sjecorp.com
E-mail: [email protected]
All rights reserved. No part of this publication may be reproduced, stored
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photocopying, recording, or otherwise, without the prior permission of SJE Corporation, Ltd.

Manufactured by
SJE Corporation, Ltd.
User's Manual
Model: OPTIMA DM Series
Ver. G2.3 / G2.7
Distributor’s Contact Information:

1
Table of Contents
Introduction--------------------------------------------------------------------------------------------- 2
Applications -------------------------------------------------------------------------------------------- 2
Product Specifications --------------------------------------------------------------------------------- 2
Exterior Description ------------------------------------------------------------------------------------ 4
Safety Precautions------------------------------------------------------------------------------------- 6
Included Items and Accessories----------------------------------------------------------------------- 9
Pre-Start Procedure----------------------------------------------------------------------------------- 10
Standard Operating Procedure ----------------------------------------------------------------------- 12
Air Adjustment----------------------------------------------------------------------------------------- 14
Moisture Control--------------------------------------------------------------------------------------- 14
Pause Operation -------------------------------------------------------------------------------------- 15
Shutdown Operation ---------------------------------------------------------------------------------- 15
Maintenance ------------------------------------------------------------------------------------------ 16
Freeze Prevention ------------------------------------------------------------------------------------ 21
Troubleshooting Guide-------------------------------------------------------------------------------- 23
Service Request--------------------------------------------------------------------------------------- 28
OPTIMA STEAMER™ Limited Warranty ------------------------------------------------------------- 28

2
Introduction
The Optima Steamer represents the future of environmentally friendly and effective cleaning.
Optima Steamer is focused on supporting your cleaning operations with high-quality green
cleaning solutions.
Applications
The Optima Steamer is capable of providing ample amount of super-heated steam continuously in
perfect pressure and temperature.
The Optima Steamer is designed to clean a wide variety of surfaces including cleaning machinery
& components, washing vehicle exteriors, interiors, engine compartment, glass, metal surfaces,
windows, wheel wells, vents, deodorizing bad odors, sanitizing hazardous food-borne bacteria from
food processing equipment, removing weeds and more.
Product Specifications
Model Name
DM(DMF)
Working Pressure
7~8.5 kgf/㎠/ Max 9.0 kgf/㎠(99~120.8 psi / Max 128 psi)
Temp. at Gun Tip
< 135℃(< 275℉)
Steam Vessel Temp.
178℃/ Max 180℃(352.4℉/ Max 356℉)
Preheating Time
2 ~ 3 minutes
Voltage
100V~ / 110-120V~ / 220-240V~
50/60Hz
(Customer configuration available)
Electrical Power
100V~
110-120V~
220-230V~
450W
350W
300W
Water Tank Capacity
20 ℓ (5.3 gals)
Rated Flow
300 ~ 1,200cc/min. (0.08~0.32gpm)
Fuel Tank Capacity
20 ℓ (5.3 gals)
Fuel Nozzle
1.10 gallon/hour @ 10.0 bar
Net Weight (kgs / lbs)
83 kgs (182.9 lbs)
Product Dimensions
[L] x [W] x [H]
1090 x 700 x 900 mm
(42.9 x 27.5 x 35.4 inch)
* Water consumption per car wash is subject to change depending on the use of the Moisture
Control Valve. (See page 14, “Moisture Control”)
For user's safety, DO NOT modify factory settings for steam pressure and temperature.

3
Product Specifications
Model Name
EST (05K, 12K, 18K, 27K)
Electrical Power Display
05K
12K
18K
27K
Working Pressure
7~8.5 kgf/㎠/ Max 9.0 kgf/㎠(99~120.8 psi / Max 128 psi)
Temp. at Gun Tip
< 135℃(< 275℉)
Steam Vessel Temp.
174℃/ max. 180℃(345.2℉/ Max 356℉)
Preheating Time
20~21 min.
8~9 min.
6~7 min.
6~7 min.
Max. Electrical Power
5kW
12kW
18kW
27kW
Voltage
200V / 208V /
230V 50/60Hz
(custom config.
available)
3-phase 200V / 208V / 230V /
380V / 415V / 440V / 460V / 480V
/ 600V 50/60Hz
(custom config. available)
3-phase 380V /
415V / 440V /
460V / 480V /
600V 50/60Hz
(custom config.
available)
Water Tank Capacity
40 ℓ (10.6 gals)
Rated Flow
300 ~ 1,200cc/min (0.08~0.32gpm)
Net Weight (kgs / lbs)
69.5 kgs
(153.2 lbs)
72.5 kgs
(159.8 lbs)
73.5 kgs
(162 lbs)
79.5 kgs
(175.2 lbs)
Product Dimensions
[L] x [W] x [H]
1090 x 700 x 900 mm (43 x 28.3 x 35.4 inch)
* Water consumption per car wash is subject to change depending on the use of the Moisture
Control Valve. (See page 14, “Moisture Control”)
For user's safety, DO NOT modify factory settings for steam pressure and temperature.

4
Exterior Description Model: DM(DMF)
1. Exhaust Flue
2. Top Cover
3. Lateral/Side Panel
4. Tank Cap
5. Water Tank
6. Throttle Door
7. 12" Rigid Wheel
8. Y-strainer
9. Non-Return Valve
10. Quick Plug for Feed-Water
11. Drain Valve
12. Moisture Control Valve
13. Swivel Caster
14. Steam Outlet Valve
15. Warning Sticker
16. Specification Sticker
17. Handle
18. Control Box
19. Operating Instruction Sticker
20. System Status LED Indicators

5
Exterior Description Model: EST(05K, 12K, 18K, 27K)
1. Top Cover
2. Lateral/Side Panel
3. Tank Cap
4. Water Tank
5. Throttle Door
6. 12" Rigid Wheel
7. Y-strainer
8. Non-Return Valve
9. Quick Plug for Feed-Water
10. Drain Valve
11. Moisture Control Valve
12. Swivel Caster
13. Steam Outlet Valve
14. Warning Sticker
15. Specification Sticker
16. Handle
17. Control Box
18. Operating Instruction Sticker
19. System Status LED Indicators

6
Safety Precautions
Visual Symbols
To ensure correct and safe usage with a full understanding of this product's
performance, please be sure to read through this User's Manual completely and
store it in a safe location. The contents of this User's Manual and the
specifications of this product are subject to change without prior notice.
Caution
Warning!
Risk of Electric shock
Risk of Burns
Risk of Suffocation
Slippery Surface
DO NOT operate on an incline
Wear appropriate protective gloves
(Goggles, ear plugs)
The manufacturer assumes no responsibility for any consequential losses or damages
including but not limited to injury of persons, loss of business or properties which may
occur through use of this product without consulting the User's Manual, regardless of
any failure to perform on the part of this product.
GENERAL SAFETY RULES
•DO NOT direct air or discharge the steam jet at itself, persons, animals or live electricity.
•Use and store the machine on a level ground (surface) only.
•DO NOT use the machine if any parts, power cord, safety devices, hoses or spray guns
are visually damaged or suspected of being damaged.
•DO NOT use the machine in a rainy or snowy weather outdoors. The machine is not
weather-proof or water-proof.
•NEVER leave the machine unattended while operating.
•Make sure to comply with safety rules in the event of operating in a danger area.
•NEVER use the machine in an area where a fire and explosion hazard exists.
•DO NOT use the machine below 0℃ (32℉) or in extremely cold weather.
•DO NOT allow water sit in the water pipes and steam vessel if leaving the machine non-
operational in cold weather.
•Store the machine at a room temperature(See page 21, “Freeze Prevention”)
•Heavy object! Be cautious when carrying or lifting. (See page 2, “Product Specifications”)
•Unplug the machine from its power source and release steam pressure from the machine
before carrying.
•Use only "Clean" and "Soft” water in the machine.
•Use of a water softener is recommended to prevent scale build-up

7
•Using any kind of boiler water treatment (solution) can help decrease scale build-up.
•DO NOT add detergent, wax or any cleaning additives in the water tank or steam vessel.
•DO NOT use distilled water or filtered water below 15 ppm.
•Connect to electrical power according to the product specifications. (See page 2,
“Product Specifications”)
•The electric supply connection is to be made by a qualified electrician and comply with
IEC 60364-1.
•Be cautious of the risk of electric shock in the event of connecting to electrical power.
•Ensure the ground connection of Grounding Chain and Ground Wire attached on the
machine to prevent the risk of damage from Electro Static Discharge.
•Users about to use the machine should carry out a visual check for insecure cable at
entry to a plug, evidence of poor wire connections or evidence of appliance or plug
overheating.
•Make sure that all the switches on the machine are off before plug-in power cables.
•In the event of using extension wire/extension cord, ensure that both ends of electric
wires are securely attached and properly insulated.
•Make sure to use right extension cord depending on the electrical parameters and the
length of extension cord. (Contact manufacturer or local distributors)
•Machines shall not be used by children. Children should be supervised to ensure that
they do not play with the machine.
•Children shall not play with the appliance.
•Cleaning and user maintenance shall not be made by children without supervision
•WARNING Do not use the machine within range of persons unless they wear protective
clothing.
•Noise can be reached to 95 decibel(dB) but subject to differ depending on steam
pressure.
•DO NOT use the machine within the range of persons who are not wearing any protective
gear.
•HOT SURFACE. DO NOT touch steam vessel, steam valves, steam hoses and guns in
operation.
•Replace steam hoses immediately if ruptured.
•Use manufacturer approved spare parts and accessories including steam hoses, steam
guns and power cables.
•Unplug the machine from its power source and allow it to cool before carrying out any
maintenance.
•NEVER disable sensors in order to bypass an alarm signal.
•Open the drain valve and release all remaining water from the steam vessel after users
shut down the machine completely. (See page 15, “Shutdown Operation”)
•NEVER spray steam over cleaning hazardous materials or surfaces containing hazardous
substance including asbestos.

8
SAFETY RULES for OPTIMA DMF
•Use clean diesel only.
•Ensure switches of the machine are off before refilling fuel.
•BURN HAZARD. DO NOT touch exhaust flue in operation.
•DO NOT operate the machine in a confined space.
•DO NOT breathe in smoke from the exhaust flue to avoid smoke inhalation.
•Use the machine in well-ventilated indoor area and install exhaust duct system if
necessary. (See page 8, "Ventilation set-up”)
[Sample of Ventilation set-up for Optima DMF]
Users about to use the OPTIMA DMF indoors should carry out installation of exhaust duct
system.

9
Included Items and Accessories
OPTIMA DMF
OPTIMA EST (05K/12K/18K/27K)
Steam Gun with nozzle 3.5 1EA
Steam Gun with Quick Coupler 1EA
(OPTIMA DMF, EST18K&27K)
Steam hose 10m 1EA
(OPTIMA EST05K&12K)
Steam hose 10m 2EA
(OPTIMA DMF, EST18K&27K)
OR
Steam Nozzle 1EA
(OPTIMA DMF, EST18K&27K)
Silent Nozzle 1EA
(OPTIMA DMF, EST18K&27K)
Couplings D. 1/2-5/8 PTC 1EA
OR
Garden hose adapter 3/4 1EA
(US Only)
L-wrench 3.0mm 1EA
(OPTIMA DMF only)
L-wrench 4.0mm 1EA
(OPTIMA DMF, EST)
T-Box wrench 10mm 1EA
T-Box wrench 12mm 1EA
T-Box wrench 14mm 1EA
Screwdriver 1EA
Multi Spanner 1EA
OR
Water probe sensor 3EA
O-ring D.17 2EA
O-ring D.22 2EA
OPTIMA DMF :
Fuse 4A 4EA OR
Fuse 6.3A 4EA (US Only)
OPTIMA EST : Fuse 4A 2EA
Water Filter 1EA
Fuel Filter Cartridge 1EA
(OPTIMA DMF only)
Microfiber Towel 3EA
※Included items and accessories are subject to change without prior notice.

10
Pre-Start Procedure
Wear appropriate protective gloves before using the product.
Surface of exhaust flue and valves may be hot.
Take precautions when users resume operations.
Steps:
1. Connect steam hoses and guns to the steam outlet valves. Ensure a tight connection using
appropriate tools.
2. Ensure that valves including drain valve, steam outlet valves are fully closed.
OPTIMA DM(DMF) / EST
3. Ensure that tank drain cap and water feeding tube are connected firmly.
(See illustrations below)
OPTIMA DM(DMF)
OPTIMA EST
4. Fill the fuel tank.
OPTIMA DM(DMF)
Ensure the location of fuel tank before
fuel replenishment.

11
5. Fill the water tank with clean water. When tap water or hard water is used, use of a water
softener is recommended to prevent scale build-up.
Continuous Water Supply
In the event of using continuous water supply, connect water hose attached with Quick
Coupler to the Plug of the machine.
Water pressure needs to be below 2bar from the tap for Floater to run effectively.
6. Check for electrical specifications before connecting to electrical power outlet.
In the event of using extension cords, take waterproof measures on the electrical sockets and plugs.
OPTIMA DMF
OPTIMA EST
Single Phase 5K
3 Phase 12K, 18K, 27K
※Alert users to the presence of “dangerous voltage” inside the product that might cause bodily harm
or electric shock.
For the use of OPTIMA XE, make sure to connect the GROUND WIRE(G) to GROUND TERMINAL.
Never connect GROUND WIRE to NEUTRAL(N) TERMINAL.
Water Quality Matters!
Water quality can greatly affect the machine's life span and performance. It is important to
use SOFT WATER. If tap water or hard water is used, use of a water softener is
recommended in order to prevent scale build-up.
DO NOT use distilled water.
DO NOT add any detergent, wax or cleaning additives into the water tank or steam
vessel.
The use of water temperature above 5℃ (40℉) recommended.
Use filtered water above 15 ppm.

12
Standard Operating Procedure
Make sure to advance the steps of Pre-Start Procedure before users follow Standard
Operating Procedure. (See page 10, "Pre-Start Procedure”)
Wear appropriate protective gloves before using the machine.
NEVER leave the machine unattended while operating.
Surface of an exhaust flue or valves may be HOT.
Take precautions while operating.
DO NOT apply any physical impact to the control panel box or leave any objects on it.

13
LED ICON LEGEND
POWER
WATER
WATER PUMP
FUEL
OFF
SOLID
BLINKING
SOLID or OFF
ALARM BEEPS ONCE
ALARM BEEPS CONTINUOUSLY
Standard Operating Procedure
step
Description
1
Turn on the POWER (EMERGENCY STOP) switch and then turn on the STEAM switch.
You will see one of the following signal indications.
2
POWER and WATER PUMP Indicators are turned to the on position.
The water pump supplies water to the steam vessel.
(Programmed feed-water time: DMF –180 sec, EST –300 sec)
3
When the low water probe sensor detects water level in the steam vessel,
ignition system functions.
4
When the high water probe sensor detects water level in the steam vessel,
water pump stops.
5
When internal pressure reaches the operating pressure (8.5 bar), ignition stops
and steam spraying is ready.
Repeat “Standard Operating Procedure” if users drain water from the steam vessel
completely and resume the operation.

14
Air Adjustment
Amount of air intake can be subject to differ depending on ambient environment.
Combustion gas should be visually transparent.
1. Open the plastic cover on the right side.
2. Slightly untighten air adjustment damper using a screw driver(+) and adjust an amount of
air intake manually.
3. Retighten the screw of air adjustment damper
Black Smoke from exhaust flue :
Move air adjustment damper clockwise
Whitish Smoke from exhaust flue :
Move air adjustment damper counter-
clockwise
DO NOT breathe in combustion gas from the exhaust flue.
Moisture Control
Users can spray moisturized steam (wet steam) by opening the moisture control valve.
In the event of cleaning interior surfaces or water sensitive areas, ensure that the moisture
control valve is fully closed to minimize surface moisture.
Using two steam guns with the moisture control valve open continuously may consume
steam faster than what can be replenished. Open the moisture control valve by 1/3 allowing
pressure to build up.

15
Pause Operation
1. Switch off the STEAM.
2. Close the steam outlet valves and release all the remaining steam from the hoses by
pulling the gun trigger. It prevents remaining of condensed water residue in the steam
hoses afterwards and increases the life span of the steam hoses and guns.
Shutdown Operation
1. Switch off the STEAM.
2. After blower fan stops automatically (applied to DMF model), switch off the POWER.
3. Release steam from the steam vessel by pulling the gun trigger until the pressure drops
down to 1~2 kgf/㎠(28.4 psi).
4. Close the steam outlet valves and release all the remaining steam from the hoses by
pulling the gun trigger.
5. Release remaining steam from the steam vessel by opening the drain valve.
In the event of draining water from the steam vessel, ensure to keep your workspace
area including steam hoses and power cable neat and tidy.
Leave the drain valve open until the next use
BURN HAZRD. Hot steam and water in the event of opening drain valve.
6. In cold weather, take precautionary measures to keep water pipes from freezing and
bursting. (See page 21, "Freeze Prevention").

16
Maintenance
Must-do before carrying out maintenance
Must cool down the product.
Must get rid of pressure in the product.
Wear appropriate protective gloves.
Unplug to shut down the power.
Caution of burn
Keep the below maintenance schedule.
Maintenance Schedule
Maintenance items
Daily
Monthly
Every
3months
Every
6months
A
Drain water from the steam vessel
B
Drain water tank / fuel tank
C
Replace filters
D
Check water probe sensors. Clean or replace
if necessary
E
Check electrodes and fuel nozzle. Clean if
necessary (Contact local distributor)
F
De-scale vessel (Contact local distributor)
G
Remove soot build-up from the vessel and
inner cylinder (Contact local distributor)
※For your safety, the Safety Relief Valve must be replaced when a leak is present.
If no leak occurs, the Safety Relief Valve must still be replaced every 3 years.
OPTIMA DM(DMF)
OPTIMA EST

17
A. Drain Water from the Steam Vessel
1. Reduce pressure below 2 kgf/㎠(28.4 psi)
2. Open the drain valve and drain out all the remaining water.
3. Leave drain valve open until the next use.
Wear appropriate protective gloves for hands because steam is very hot.
In the event of vessel drain, ensure to keep your workspace area including steam hoses
and power cable neat and tidy.
Leave the drain valve open until the next use.
OPTIMA DM(DMF) / EST
B. Drain Water tank / Fuel tank
Open drain cap underneath the tank or pull the water feeding tube.
Caution : Slippery When Wet
OPTIMA
DM(DMF)
Open drain cap
underneath the tank.
OPTIMA
EST
Pull the water feeding tube while
pressing down the the blue plastic part
of One-Touch Nipple.