172-65440MA-01(JH7RH-B) 18 Nov 2020
9
Disassembly/Reassembly
NEVER apply direct heat to the float. The float may explode due to
increased internal pressure, causing accidents leading to serious injury
or damage to property and equipment.
WARNING
Use hoisting equipment for heavy objects (weighing approximately
20 kg (44 lb) or more). Failure to do so may result in back strain or other
injury if the object should fall.
CAUTION
When disassembling or removing the product, wait until the internal
pressure equals atmospheric pressure and the surface of the product
has cooled to room temperature. Disassembling or removing the
product when it is hot or under pressure may lead to discharge of fluids,
causing burns, other injuries or damage.
CAUTION
Use the following procedures to remove components. Use the same procedures in
reverse to reassemble. (Installation, inspection, maintenance, repairs, disassembly,
adjustment and valve opening/closing should be carried out only by trained
maintenance personnel.)
Drain Plug (Option)
Part
During Disassembly
During Reassembly
Drain Plug
Remove with a socket
wrench
Consult the table of tightening torques and
tighten to the proper torque
Drain Plug Gasket Remove the gasket and
clean sealing surfaces
Replace with a new gasket
Detaching/Reattaching the Cover
Part
During Disassembly
During Reassembly
Cover Nut
Remove with a socket
wrench
Consult the table of tightening torques and
tighten to the proper torque
Cover
Remove, being careful
not to scratch the gasket
sealing surfaces
Make sure there are no pieces of the old
gasket left on the sealing surfaces of the
body and cover, align the arrows on the body
and cover and reattach
Cover Gasket
Remove the gasket and
clean sealing surfaces
Replace with a new gasket
Disassembly/Reassembly of Air Vent Valve Unit*
Part
During Disassembly
During Reassembly
Snap Ring
Pinch the insides together
and remove from the
cover
Insert securely into groove
Screen
Remove, being careful not
to misshape
Replace, being careful not to
misshape
Bimetal Plate / Air
Vent Valve Plug /
Snap Ring
Remove air vent parts
from case
Make sure to reinsert in the
proper orientation (Fig. A)
Air Vent Valve Seat Remove with a socket
wrench
Consult the table of tightening
torques and tighten to the
proper torque
Air Vent Case
Remove Air Vent Case
Place in position
Air Vent Guide*
Remove with a socket
wrench
Consult the table of tightening
torques and tighten to the
proper torque
Air Vent Guide
Gasket
Remove the gasket and
clean sealing surfaces
Replace with a new gasket
*When disassembly is not required, the entire unit may be removed and replaced
at the Air Vent Guide with an open wrench.
Figure A
