Groen NEB Installation Manual
OPERATOR MANUAL
Model: NEB
Steam Generator
Electrically heated
24, 36, or 48 kilowatts
OM—NEB
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.
LIMITED WARRANTY TO
COMMERCIAL PURCHASERS*
(Continental U.S., Hawaii & Canadian Sales Only)
Groen Foodservice Equipment ("Groen Equipment") has been skillfully manufactured, carefully inspected and
packaged to meet rigid standards of excellence. Groen warrants its Equipment to be free from defects in material
and workmanship for (12) twelve months with the following conditions and subject to the following limitations.
I.
This parts and labor warranty is limited to Groen Equipment sold to the original commercial
purchaser/users (but not original equipment manufacturers), at its original place of installation in
the continental United States, Hawaii and Canada.
II.
Damage during shipment is to be reported to the carrier, is not covered under this warranty, and
is the sole responsibility of purchaser/user.
III.
Groen, or an authorized service representative, will repair or replace, at Groen's sole election, any
Groen Equipment, including but not limited to, draw-off valves, safety valves, gas and electric
components, found to be defective during the warranty period. As to warranty service in the
territory described above, Groen will absorb labor and portal to portal transportation costs (time
& mileage) for the first twelve (12) months from date of installation or fifteen (15) months from
date of shipment from Groen.
IV.
This warranty does not cover boiler maintenance, calibration, periodic adjustments as specified in
operating instructions or manuals, and consumable parts such as scraper blades, gaskets,
packing, etc., or labor costs incurred for removal of adjacent equipment or objects to gain access
to Groen Equipment. This warranty does not cover defects caused by improper installation,
abuse, careless operation, or improper maintenance of equipment. This warranty does not cover
damage caused by poor water quality or improper boiler maintenance.
V.
THIS WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ALL OTHER WARRANTIES,
EXPRESSED OR IMPLIED, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY
OR FITNESS FOR A PARTICULAR PURPOSE, EACH OF WHICH IS HEREBY EXPRESSLY
DISCLAIMED. THE REMEDIES DESCRIBED ABOVE ARE EXCLUSIVE AND IN NO EVENT
SHALL GROEN BE LIABLE FOR SPECIAL, CONSEQUENTIAL OR INCIDENTAL DAMAGES
FOR THE BREACH OR DELAY IN PERFORMANCE OF THIS WARRANTY.
VI.
Groen Equipment is for commercial use only. If sold as a component of another (O.E.M.)
manufacturer's equipment, or if used as a consumer product, such Equipment is sold AS IS and
without any warranty.
* (Covers All Foodservice Equipment Ordered After October 1, 1995)
1
TABLE OF CONTENTS
EQUIPMENT DESCRIPTION 3
WATER CONDITIONING 3
INSTALLATION 4
INITIAL START-UP 5
OPERATION 5
SEQUENCE OF OPERATION 6
MAINTENANCE & CLEANING 6-7
TROUBLESHOOTING 8-9
PARTS LIST 10
DIAGRAMS & SCHEMATICS 11-12
REFERENCE 12
MAINTENANCE LOG 13
WARRANTY INFORMATION 14
2
Equipment Description
KW
KW
240 V, 24 KW
240 V, 36 KW
208 V, 24 KW
The Groen NEB steam generator is designed to generate low pressure steam for use in steamers
and steam jacketed kettles.
The unit is housed in a stainless steel cabinet, on top of which can be mounted various combinations of steamers and kettles requiring a steam supply.
The NEB features a control box that is located at the front of the cabinet for easy maintenance.
The steam generating chamber is constructed of 1/4 inch boiler plate according to ASME code (all
welds are hydrostatically tested) and is equipped with all required instruments, fittings, and
controls.
Heating elements with low watt density ensure longer life for the unit. The generator is available
with the following voltage and power combinations, all for 3 PH, 60 HZ service.
480 V, 24
480 V, 36
480 V, 48 KW
240 V, 48 KW
Water Conditioning
208 V, 36 KW
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 boiler was engineered to minimize scale formation, but scale formation depends on the hardness of the water and the hours of
operation. In a few areas of the United States, the water supply is sufficiently free of minerals to
avoid scale formation. Most water supplies carry heavy loads of minerals, which will form scale on
the boiler and reduce its steam output. Your local water utility can provide a statement on the scale
forming qualities of the water supply. Water supplied to the boiler should contain not more than 30
parts per million total dissolved solids (TDS) and should have a pH of 7.0 or higher.
Please follow these simple precautions:
(1) Do not rely on "water treaters" commonly sold as scale preventers and scale removers.
THEY DO NOT WORK. The only proven way to prevent scale build-up is to feed in water
practically free of scale-forming minerals.
(2) If your water supply carries scale forming minerals, as most water supplies do, run the water
through a properly maintained softener. Exchangeable softener cartridges or a regeneratable softener can be used. In either case, establish a regular program of exchanging the
cartridges or regenerating the softener. Installing a water meter on the inlet line between the
softener and the boiler will give an accurate check of water consumption and a way of
determining when to change the cartridge or regenerate the softener. By using a softener
and operating within the softener's capacity to exchange minerals, the user will obtain a
longer generator life, high steam capacity, and minimum maintenance requirements.
(3) If you notice a slowing of steam production, examine the interior of the generator for scale,
and remove any scale deposits. (See the general cleaning instructions.) Hard scale can be
removed with acids like sulfamic or inhibited muriatic, but such treatment is dangerous and
should be done only by an expert familiar with the hazards. Vinegar will dissolve most
scales, but the process requires a long time and frequent changes of the vinegar solution.
3
Loading...