U.S. Boiler Company MPO - IQ, Инструкция по эксплуатации

Страница: 58 / 92

58
c. Remove relief valve using extreme care to avoid
damaging it.
d. Add an appropriate amount of recommended boil out
compound.
e. Replace relief valve.
f. Fill the entire system with water.
g. Start firing the boiler.
h. Circulate the water through the entire system.
i. Vent the system, including the radiation.
j Allow boiler water to reach operating temperature, if
possible.
k. Continue to circulate the water for a few hours.
l. Stop firing the boiler.
m. Drain the system in a manner and to a location that
hot water can be discharged with safety.
n. Remove plugs from all available returns and wash
the water side of the boiler as thoroughly as possible,
using a high-pressure water stream.
o. Refill the system with fresh water.
3. Add appropriate boiler water treatment compounds as
recommended by your qualified water treatment company.
4. Make pH or Alkalinity Test.
After boiler and system have been cleaned and refilled
as previously described, test the pH of the water in the
system. This can easily be done by drawing a small sample
of boiler water and testing with hydrion paper which is
used in the same manner as litmus paper, except it gives
specific readings. A color chart on the side of the small
hydrion dispenser gives the reading pH. Hydrion paper
is inexpensive and obtainable from any chemical supply
house or through your local druggist. The pH should be
higher than 7 but lower than 11. Add appropriate water
treatment chemicals, if necessary, to bring the pH within
the specified range. With this lower level of protection,
care must be exercised to eliminate all of the free oxygen
in the system.
5. Boiler is now ready to be put into service.
C. ExCESSIVE MAKE-UP WATER
A leaky system will increase the volume of make-up water
supplied to the boiler which can significantly shorten the
life of the boiler. Entrained in make-up water are dissolved
minerals, salts and oxygen. When the fresh, cool make-up
water is heated in the boiler the minerals fall out as sediment,
the salts coat the inside of the boiler, and the oxygen escapes
as a gas. The accumulation of sediment eventually isolates
the water from contacting the cast iron. When this happens
IMPORTANT
IF, DURING NORMAL OPERATION, IT IS NECESSARY
TO ADD MORE WATER THAN INDICATED BELOW,
CONSULT A QUALIFIED SERVICE TECHNICIAN TO
CHECK YOUR SYSTEM FOR LEAKS.
Model No.
Gallons Per
Month
Gallons Per
Year
MPO-IQ84 / 115 0.20 2.4
MPO-IQ147 0.25 3.0
MPO-IQ189 0.30 3.6
MPO-IQ231 0.40 4.8
the cast iron in that area gets extremely hot and eventually
cracks. The presence of free oxygen or chloride salts in the
boiler corrodes the cast iron from the inside. More make-up
water and higher concentrations of contaminants damage the
boiler sooner. Our warranty does not cover corrosion and
sediment-related damage. Clearly it is in everyone's best
interest to prevent this type of failure. You can do your part
by ensuring that your system is leak-free, keeping leakage to
less than 2 percent of the boiler water volume each month.
D. ATTENTION TO BOILER WHILE NOT IN
OPERATION.
NOTICE
If boiler is not used during winter time, it must be
fully drained to prevent freeze damage.
1. Spray inside surfaces with light lubricating or crankcase
oil using gun with extended stem so as to reach all
corners.
2. Always keep the manual fuel supply valve shut off if the
burner is shut down for an extended period of time.
3. To recondition the heating system in the fall season after
a prolonged shut down, follow the instructions outlined
in Section X, Paragraphs A through M.
WARNING
This boiler contains controls which may cause the
boiler to shut down and not restart without service.
If damage due to frozen pipes is a possibility, the
heating system should not be left unattended in
cold weather; or appropriate safeguards and alarms
should be installed on the heating system to prevent
damage if the boiler is inoperative.
xI. MAINTENANCE AND SERVICE INSTRUCTIONS (continued)