5 OM-NEB/1
6. Turn on/off switch to “ON” to close the automatic drain valve.
7. Using a 1/2” hardened square wrench extension, remove one of the 1-1/4”
NPT pipe plugs from the front of the boiler.
8. Pour 32 ounces of de-limer into the boiler.
9. Replace the pipe plug. Use pipe joint compound, and tighten the plug securely.
10. Turn on water supply to allow water to fill the boiler.
11. When the reset light appears, press the START switch.
12. Allow boiler pressure to develop. Let it stand for approximately 15 minutes
after pressure has built up. A badly limed unit may require more than 15
minutes.
If there are no steamer cavities or compartments with this boiler, proceed to step
19.
13. Turn on power to steamer cavities and set steamer timers for 10 minutes.
14. When steamer timers sound, turn them to OFF and open the doors.
15. When the fans have stopped, remove fan baffle partitions using protective
gloves, and rinse with clean water.
16. Completely wipe out steamer chambers using a degreaser and nylon pad, if
necessary. Rinse thoroughly with clean water.
17. Replace fan baffle partitions.
18. Wait 10 minutes for the compartments to air dry, then close the steamer doors.
19. Turn the on/off switch OFF, and slowly open the manual drain valve.
20. When the boiler has drained completely, close the manual drain valve and turn
the on/off switch to “ON” to fill the boiler with water.
21. After the RESET light comes on, press the start switch.
22. Allow boiler pressure to develop.
If steamers are not present, proceed to step 25.
23. Set steamer timers for 10 minutes.
24. When steamer signal sounds, turn timers off.
25. If the boiler is not to be used, it may be turned off. It is ready for normal
operation.
MAINTENANCE
WARNING: USE ONLY MANUFACTURER-SUPPLIED PARTS. USING SUBSTITUTE,
UNAUTHORIZED OR “GENERIC” PARTS CAN CAUSE BODILY INJURY TO THE
OPERATOR AND DAMAGE THE EQUIPMENT.
WARNING: DO NOT EXPOSE SKIN TO ESCAPING STEAM. SEVERE BURNS MAY RESULT.
One of the pressure relief safety valves is located on the top left rear of the boiler.
Your boiler is designed to minimize maintenance, but certain parts may need to
be replaced after prolonged use. For the most part, no user adjustments should
be necessary. If a need for service arises, only Authorized Representatives should
perform the work.
Among the most common problems is the rapid build-up of scale in the boiler. To
avoid this, always supply water that has a low mineral content, which meets the
standards described in the Water Quality section of this manual.
PERIODIC MAINTENANCE
The unit should be inspected by a qualified service technician at least once each
year. The inspection should include electrical wires and connections, cleaning the
inside of the control enclosure and pilot burner adjustment, if required.
At the back of this manual (with the information about our warranty) is a
Maintenance and Service Log. Each time maintenance is performed on the unit,
enter the date on which it was done, what was done, and who did it. Keep this log
with the warranty.
In addition to yearly inspections by a qualified service technician, a weekly check of
the following will help prevent down time and ensure continued efficient operation.
1. Pressure gauge operation
2. Proper water level (gauge)
3. Strainer in water feed line (clear?)
4. Drain piping (free running? No blockage?)
At least twice each month, check the safety valve to be sure it is working properly.
(Ensure that the safety valve is properly set up, as described in the Installation
Section of this manual).
When pressure reaches five PSI on the gauge, lift the lever to vent steam, then
release it, allowing it to snap back into place.
COMPONENT REPLACEMENT
NEB/1 boilers are easy to service. The design is simple, and controls are readily
accessible. Before replacing any part, COMPLETELY SHUT OFF ELECTRICAL
POWER TO THE UNIT.
REPLACEMENT PARTS
To order parts, contact your Authorized Service Agent. Supply the model
designation, serial number, part description, part number, quantity, and when
applicable, voltage and phase.
CONTACT US
If you have questions pertaining to the content in this manual, contact Unified
Brands at 888-994-7636.
TROUBLESHOOTING
Do not operate the unit if it malfunctions or has damaged or broken parts. Steam
boilers are designed to operate smoothly and efficiently when maintained prop-
erly. However, the following is a list of checks to make if there is a problem.
Electrical schematics are provided in this manual, and inside the unit electrical
enclosure. IF THE ITEM ON THE LIST IS MARKED WITH (X), THE WORK SHOULD
ONLY BE DONE BY A FACTORY-AUTHORIZED SERVICE REPRESENTATIVE.
SYMPTOM
PROCEDURE
PROCEDURE
Boiler does not fill
with water.
User
a. Is water supply connected and is water
present?
b. Is water pressure low (less than 30 PSI)?
c. Is strainer screen (if used) clogged?
d. Is on/off switch in base cabinet turned
on? Is the amber light in the on/off switch
“ON”?
e. Is the manual drain valve open?
Authorized
Service Rep
Only
f. Is the Water Level Control Board defective?
Check for loose electrical connections on
water fill solenoid. (X)
g. Is the water fill solenoid valve defective? (X)
h. Is the solenoid drain valve open or leaking?
Check for loose electrical connections on
solenoid drain valve. (X)
