2.ASSEMBLY OF SECTIONS (HYDRAULIC
DRAW-UP)
• MPC4 through MPC12 Section Assemblies
The entire assemblage may be
• MPC13 through MPC18 Section Assemblies
The total assemblage should be first
“Hydraulic
Step a. Repeat Step ‘a’ through Step ‘l’ under “Field Assembled Sections (Manual
Step b. Continue driving sections in place (in their respective order) until all sections are in the assemblage. Ground surfaces between adjoining sections should be spaced 3/8” to 1/2” apart. Spacing of more than 1/2” will limit number of sections that can be drawn up in one unit and could indicate cocked nipples.
WARNING
Sealant must be properly applied to ALL boiler joints. Failure to properly seal the boiler joints will result in combustion gas leaks through the joint. DO NOT operate boiler with combustion gas leaks. The sealant should be applied before each section is placed on the assembly.
On long boiler assemblies, it may be necessary to draw up a partial block if the entire boiler is not ready to be drawn up tight within two (2) hours of the first application of the Silastic. If the block assembly time extends overnight, the partial block completed must be drawn up tight before leaving the boiler overnight. If a joint springs apart, it must be
Step c. From the Hydraulic
the opposite end of threaded rod in upper nipple port. Place remaining 6½” dia. pressure plate on rod protruding through lower nipple port.
NOTICE
As assembled length increases, use 3/4” coupling nuts and additional rods, provided in Kit, to extend
Slide ¾” washer, hydraulic ram and second ¾” washer over each rod assembly. Remove all slack from assemblies and apply
Center upper pressure plates on nipple port and boss while pumping ram set until tension holds assembly in place. Repeat for lower assembly. Refer to Figure 5 to verify proper arrangement.
CAUTION
Rods should be approximately centered in openings so that rods and couplings (when used) do not drag on pipe thread in end section tappings.
WARNING
READ THE STATEMENTS BELOW BEFORE
ATTEMPTING TO USE HYDRAULIC EQUIPMENT.
•Release pressure in ram pumps before attempting to remove clamps.
•Do not stand in line with
•Do not operate ram against
•Do not operate pump after ram has reached stroke limit.
Step d.
Use hydraulic rams to draw up sections by applying pressure alternately on the
Step e. Continue to
If the sections still do not appear to be drawn metal to metal, use feeler gauge provided to measure any gaps at the locations identified in Figure 8. (Unless specified otherwise, gaps should be measured at these locations). A maximum gap of .025” is acceptable.
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