51
open gate valve in Hartford Loop, then
repeat Step 1 above.
e. 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 in 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 some of the washout
chemical (caustic soda), if necessary, to bring the
pH within the specified range.
f. Boiler is now ready to be put into service.
C.
ExCESSIVE MAkE-UP wATER
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.
EXCESSIVE WATER ADDITION:
(Gallons / Month)
MST88: 6
MST396: 8
MST513: 9½
MST69: 11
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 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 oxygen 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.
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. With steam boilers, at end of season add sufficient
water to fill boiler to top of water column and leave
it that way until fall when water should be drained
again to proper level. If at this time boiler water is
dirty, drain water, flush out boiler, and refill with
clean water to prescribed water level.
3. Always keep the manual fuel supply valve shut off
if the burner is shut down for an extended period of
time.
4. To recondition the heating system in the fall season
after a prolonged shut down, follow the instructions
outlined in Section VIII, Paragraphs A through J.
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.
SECTION Ix: MAINTENANCE AND SERVICE INSTRUCTIONS (cont'd)
Summary of Contents for MegaSteam MST
Page 5: ...Figure 1 MST288 Thru MST629 Steam Boiler with and without Tankless Heater Beckett Burner Shown...
Page 11: ...11 Figure 4 Boiler Removal from Skid SECTION II UNIT PAK BOILER ASSEMBLY continued...
Page 34: ...34 Figure 18 Wiring Diagram Steam Hydrolevel CG450 Probe LWCO SECTION VI ELECTRICAL continued...
Page 58: ...58 Bare Boiler Assembly SECTION XII Repair Parts continued...
Page 60: ...60 Jacket Assembly SECTION XII Repair Parts continued...
Page 62: ...62 MST288 Thru MST629 Steam Boilers Trim and Controls SECTION XII Repair Parts continued...
Page 64: ...64 Beckett AFG Burner SECTION XII Repair Parts continued...
