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User Manual
& Installation Instructions
LG-10 thru LG-30
IMPORTANT – READ ALL INSTRUCTIONS BEFORE OPERATING
All steam boilers are built in accordance with ASME miniature boiler code.
NOTE: It is the responsibility of the installer to conform to any state or local codes. If further
inspection, following modification by installer, is required under state or local codes, that is
the responsibility of the local installer.
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WARNING - The following labels have been placed on this boiler for YOUR SAFETY. Failure to observe these instructions could lead to PROPERTY DAMAGE, SEVERE INJURY, or even DEATH CAUT ION U CA T ION THROW OFF MAIN HOT POWER SWITCH BEFORE WORKING ON DANGER ELECTRICAL CABINET HIGH VOLTAGE AUTHORIZED PERSONNEL A MANUAL WAS SHIPPED WITH THIS ONLY BOILER. IT IS IMPORTANT THAT YOU READ, UNDERSTAND, AND OPERATE PELIGRO THIS STEAM GENERATOR IN ACCOR- DANCE WITH THE OPERATING ALTO V
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LG-10 thru LG-30 - User Manual Electro-Steam Generator Corp. TABLE OF CONTENTS 1.) INSTALLATION INSTRUCTIONS .................................................................... 4 2.) OPERATION & SEQUENCE OF EVENTS ..................................................... 5 3.) CLEANING & MAINTENANCE ................................................................... 6-14 3.1) MANUAL “BLOW
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LG-10 thru LG-30 - User Manual Electro-Steam Generator Corp. 1.) INSTALLATION INSTRUCTIONS LITTLE GIANT “LG-SERIES” The Electro-Steam Generator design consists essentially of a high pressure chamber filled with water that is heated by one or more submerged resistance type electric heating elements. Automatic controls are provided to maintain the pre-set operating pressure and water lev
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LG-10 thru LG-30 - User Manual Electro-Steam Generator Corp. 2.) OPERATION & SEQUENCE OF EVENTS IMPORTANT – READ INSTALLATION INSTRUCTIONS BEFORE OPERATING 1. Turn on water supply from the source to the Generator. 2. OPEN all valves on the Generator except for the Manual Drain (#19). 3. Place main disconnect switch in ON position. 4. Place ON/OFF Switch (#2) in ON position. •
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LG-10 thru LG-30 - User Manual Electro-Steam Generator Corp. 3.) CLEANING & MAINTENANCE The following cleaning procedures are HIGHLY RECOMMENDED in order to keep your Steam Generator in the best operating condition at all times. 3.1) MANUAL “BLOW DOWN” A Manual “Blow Down” is an easy way to GREATLY extend the life of your Steam Generator. Using a Motorized Auto-Flush & Drain (MAFD)
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LG-10 thru LG-30 - User Manual Electro-Steam Generator Corp. 3.2) CLEANING WATER LEVEL PROBES (Continued) 6. Clean probes to remove rust and scaling. NOTE: To clean probes you may use wire wheel, wire brush, steal wool, or Scotch-Brite. (Wire wheel works the best) You may also want to try some sort of chemical like CLR remover or LIME-A-WAY. 7. Reinstall probes assuring each probe’s
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LG-10 thru LG-30 - User Manual Electro-Steam Generator Corp. 3.4) REPLACING GLASS GAUGE & RUBBER WASHERS OR GLASS PACKINGS The Sight Glass (#10) gives the operator the ability to easily monitor the actual water level inside the chamber. If the Sight Glass (#10) gets clogged or is no longer functional, it can be very difficult to troubleshoot a problem. 3.4.1) BRASS SIGHT GLASS (STANDA
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LG-10 thru LG-30 - User Manual Electro-Steam Generator Corp. 3.4) REPLACING GLASS GAUGE & RUBBER WASHERS OR GLASS PACKINGS (Continued) The Sight Glass (#10) gives the operator the ability to easily monitor the actual water level inside the chamber. If the Sight Glass (#10) gets clogged or is no longer functional, it can be very difficult to troubleshoot a problem. 3.4.2) BRASS SIGHT GLA
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LG-10 thru LG-30 - User Manual Electro-Steam Generator Corp. 3.5) CHAMBER CHEMICAL/ACID TREATMENT All Electric Steam Generator should be cleaned regularly. The following is the least amount of times recommended to clean out your chamber: NORMAL WATER AREAS – Should be done ONCE A YEAR. BAD WATER AREAS – Should be done TWICE A YEAR. If equipped with Motorized Auto-Flush & Drain “MAFD
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LG-10 thru LG-30 - User Manual Electro-Steam Generator Corp. 3.5) CHAMBER CHEMICAL/ACID TREATMENT (Continued) 4. Close Manual Drain (#19) and Steam Out (#16); turn generator on until Sight Glass (#10) shows that it is 1/2 full, and then shut off. 5. Insert funnel into coupling, where Safety Valve (#18) used to be. 6. Pour a 1/2 Gallon of hydrochloric acid (inhibited) solution (NON-FO
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LG-10 thru LG-30 - User Manual Electro-Steam Generator Corp. 3.6) PRESSURE CONTROL DATA SHEET DEFINITIONS: “CONTROL” PRESSURE CONTROL – This pressure control should be the only one controlling the operating pressure of the generator. “SAFETY” PRESSURE CONTROL – This pressure control is only used if the “Control” fails. It is always set higher than the “Control”; if the operating
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LG-10 thru LG-30 - User Manual Electro-Steam Generator Corp. 3.7) SETTING THE PRESSURE CONTROLS SETTING PRESSURE CONTROLS INSTUCTIONS: WARNING – The pressure controls must be set while all circuits are live. TO AVOID ELECTRICAL SHOCK, DO NOT TOUCH the wires or the terminals in which they connect while setting the pressure controls. NOTES: - Setting the pressure controls greatly r
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LG-10 thru LG-30 - User Manual Electro-Steam Generator Corp. 3.7) SETTING THE PRESSURE CONTROLS (Continued) 5. At this point the contactor(s) should be clicked off and you should be able to click them on and then off again by pressing the SAFETY RESET. This is a way to test if the “SAFETY” is still controlling the pressure, and not the “CONTROL”. While setting the “SAFETY” and the contac
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LG-10 thru LG-30 - User Manual Electro-Steam Generator Corp. 4.) CALCULATIONS AND DATA SHEETS 4.1) HEATER POWER & VOLTAGE RATINGS LG Model units use 3 Heaters to meet the required (KW) POWER from the customer’s specified INPUT VOLTAGE. Each heater comes in 5 different (KW) POWER RATINGS and 4 different VOLTAGE RATINGS. AVAILABLE HEATER RATINGS POWER RATINGS per MODEL KW VOLTAGES MODE
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LG-10 thru LG-30 - User Manual Electro-Steam Generator Corp. 4.3) AMPERAGE CALCULATIONS The INPUT VOLTAGE, PHASE, TOTAL POWER RATING, and HEATER VOLTAGE RATING are used to calculate the amperage. NOTE: 380-425V heaters are not usually rated for 380-425V. They are usually 208-240V heaters that have been re-stamped 380-425V and wired in series. FORMULAS TO CALCULATE AMPERAGE THREE PHA
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LG-10 thru LG-30 - User Manual Electro-Steam Generator Corp. 4.4) ACTUAL POWER RATING CALCULATIONS Because the HEATER VOLTAGE RATINGS only come in 4 different voltages, and there are so many different voltages in the field, the TOTAL POWER RATING is only completely accurate if the VOLTAGE IN is exactly equal to the HEATER VOLTAGE RATING. This means, in most cases, the TOTAL POWER RATING
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18 of 33 PARTS LEGEND - LG (L) 1.) Control Panel 9.) 1/2" Check Valves 2.) ON/OFF Switch 10.) 5/8" x 6 1/4" Sight Glass (Seismic Optional) 3.) Manual Low-Water Reset (MLWR) (Optional) 11.) Water Barrier - 1/2" U-Tube 5.) Water Level Probes 12.) 0-15 PSI Pressure Controls 6.) Water Inlet - 3/8" Y-Strainer 13.) Reset on "Safety" Pressure Switch 7.) 3/8" Water Solenoid 14.) 1/4" Needle Valve 15.) 0-30 PSI Pressure Gauge 16.) Steam Out - 1/2" Ball Valve 17.) 1/2" Vacuum
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19 of 33 PARTS LEGEND - LG (L)(MAFD) 1.) Control Panel 9.) 1/2" Check Valves 2.) ON/OFF Switch 10.) 5/8" x 6 1/4" Sight Glass (Seismic Optional) 3.) Manual Low-Water Reset (MLWR) (Optional) 11.) Water Barrier - 1/2" U-Tube 5.) Water Level Probes 12.) 0-15 PSI Pressure Controls 6.) Water Inlet - 3/8" Y-Strainer 13.) Reset on "Safety" Pressure Switch 7.) 3/8" Water Solenoid 14.) 1/4" Needle Valve 15.) 0-30 PSI Pressure Gauge 16.) Steam Out - 1/2" Ball Valve 17.) 1/2" V
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20 of 33 PARTS LEGEND - LG (H) 1.) Control Panel 8.) 1/4 HP Pump & Motor 2.) ON/OFF Switch 9.) 1/2" Check Valves 3.) Manual Low-Water Reset (MLWR) (Optional) 10.) 5/8" x 6 1/4" Sight Glass (Seismic Optional) 5.) Water Level Probes 11.) Water Barrier - 1/2" U-Tube 6.) Water Inlet - 3/8" Y-Strainer 12.) 0-90 PSI Pressure Controls 7.) 3/8" Water Solenoid 13.) Reset on "Safety" Pressure Switch 14.) 1/4" Needle Valve 15.) 0-160 PSI Pressure Gauge 16.) Steam Out - 1/2" B
