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THIS MANUAL MUST BE RETAINED FOR FUTURE REFERENCE
FOR YOUR SAFETY
DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE 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 OFF THE GAS AND CALL YOUR
LOCAL 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.
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Table of Contents
Summary of Contents for Groen NGB Series
- Page 1 THIS MANUAL MUST BE RETAINED FOR FUTURE REFERENCE FOR YOUR SAFETY DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE 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.
- Page 2 A warranty registration card will be attached to the unit. Fill in this card and mail it to Groen Record the model number, serial number and installation date of your unit at the top of the Maintenance and Service Log in the back of this manual.
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Page 3: Table Of Contents
Table of Contents EQUIPMENT DESCRIPTION ..................... 2 INSTALLATION ......................2,3, 4 INITIAL START-UP ......................4, 5 OPERATION ........................5,6 SEQUENCE OF OPERATION .................... 7 WATER CONDITIONING ....................8 REFERENCES ........................8 MAINTENANCE & CLEANING ..................9, 10 TROUBLESHOOTING ..................11, 12, 13, 14 PARTS LISTS .................... -
Page 4: Equipment Description
Equipment Description The Groen NGB and NGB/E steam generators are designed to generate Low pressure steam tor use in GOLDLINE cabinet mounted steamers and steam jacketed kettles. The generator is housed in a stainless steel cabinet on top of which can be mounted various combinations of steamers and kettles requiring a steam supply. - Page 5 3/4 manual drain pipe to a 1 1/2 IPS (or larger) pipe header. Then extend the header to a nearby floor drain. GROEN recommends that the header have 2 or less elbows and a length of no more than 6 feet.
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Page 6: Initial Start-Up
RETROFIT KIT INSTRUCTIONS Instructions: 1. Remove check valve and discard it. 2. Place 3/4"'tee between relief valve and existing tee. 3. Screw reducing brushing and vacuum breaker into tee. 4. Screw 1/4 elbow into reducing bushing on relief valve. Initial Start-Up Now that the steam generator has been installed, the unit should be tested to ensure that it is operating correctly. -
Page 7: Operation
6. To shut down the unit, push the "ON/OFF" switch to the OFF position. The generator wiil drain automatically after it has cooled to 170°. If the generator functions as described above, the unit is ready for use. If it does not. contact your Groen Authorized Service Agent. - Page 8 In this case, after waiting at least 5 minutes, restart the unit by following the operating procedure for your unit, beginning with step "a". If the pressure rises too high more than once, call your Groen Authorized Service Agency...
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Page 9: Sequence Of Operation
Sequence of Operation A. For Model NGB or NGB/2 Pushing the power switch to the "ON" position will cause the water feed valve to open, filling the generator unit until the level probe senses the proper water level. The feed valve will then close. At this time, momentarily pushing the power switch to the "RESET"... -
Page 10: Water Conditioning
Water Conditioning It is absolutely essential that the water supplied to the Groen Steam-Generator be of such a character that it will not form scale at an unacceptable rate. The Groen generator was engineered to minimize scale formation, but scale formation depends on the hardness of the water and the hours of operation. -
Page 11: Maintenance & Cleaning
A Maintenance and Service Log is provided with the warranty information. Each time maintenance is performed on your Groen equipment, enter the date on which the work was done, what was done, and who did it. File the log with the warranty. - Page 12 Maintenance (cont’d) C. GENERAL CLEANING INSTRUCTIONS The steam generator will automatically drain completely .every .fine it is turned " ". This must be done every day to minimize build-up of scale inside the boiler. In addition to daily draining, once a month the following routine should be followed: WARNING: BEFORE YOU BEGIN TO CLEAN THE UNIT, UNPLUG THE POWER SUPPLY CORD, OR DISCONNECT THE ELECTRIC POWER SUPPLY AT THE CIRCUIT BREAKER OR FUSE BOX.
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Page 13: Troubleshooting
If an item on the list is followed by an asterisk (*);. the work should be done only by a. qualified service representative. CAUTION: USE OF ANY REPLACEMENT PARTS OTHER THAN THOSE SUPPLIED BY GROEN OR THEIR AUTHORIZED DISTRIBUTOR VOIDS ALL WARRANTIES, AND CAN CAUSE BODILY INJURY TO THE OPERATOR AND DAMAGE TO THE EQUIPMENT. - Page 14 WHAT TO CHECK SYMPTOM. Water enters generator very slowly. Strainer screen on water feed Solenoid valve, and clean or replace, if necessary (Ref. 6 or 38).* Seat of feed valve for dirt or lime accumulation. Clean necessary (Ref.'6 or 38)* Pressure of water supply.
- Page 15 SYMPTOM WHAT TO CHECK a Confirm, that pressure gauge reads correctly. Safety valve pops. (1) If pressure goes over 15 PSI, adjust or replace pressure switches. (Ref. 23.24). * (2) If pressure stays under 14 1/2 PSI: (a) Clean safety valve. (b) Replace safety valve with valve stamped "HV".
- Page 16 SYMPTOM WHAT TO CHECK Pilot light does not stay lighted. Lighting procedure. See the "Operation" section of this manual. For defective switching across either the water level control or the pressure switches by testing for continuity. Replace defective units. (Ref. 22 or 23, 24).* For defective gas valve and replace if necessary (Ref.
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Page 17: Parts Lists
Parts List To order parts, contact your authorized Groen Service Agency. Supply the model designation, part description, part number, quantity, and where applicable, voltage and phase or type of gas. ITEM PART ITEM PART DESCRIPTION DESCRIPTION 59407 PRESSURE GUAGE 54285... - Page 19 Parts List To order parts, contact your authorized Groen Service Agency. Supply the model designation, part description, part number, quantity, and where applicable, voltage and phase or type of gas. ITEM PART ITEM PART DESCRIPTION DESCRIPTION 000624 BUSHING REDUCING HEX. 1" x 3/4" NPT 065903 BUSHING REDUCING 3/4"...
- Page 21 Parts List To order parts, contact your authorized Groen Service Agency. Supply the model designation, part description, part number, quantity, and, where applicable, voltage and phase. ITEM PART ITEM PART DESCRIPTION DESCRIPTION 000624 BUSHING REDUCING HEX 1" X 3/4" NPT.
- Page 22 For NGB/2 & NGB/2/E Made After August 7, 1991...
- Page 23 Electrical Schematics For NGB/2 made between January 1,1988 and August 7, 1991...
- Page 24 Electrical Schematics For NGB & NGB/E made before January 1,1988...
- Page 25 Wiring Ladder Diagrams...