Mitsubishi EHST20C-VM2C - Notes on replacing the parts

101
Notes on replacing the parts
Replacementofthepartslistedbelowrequiresthefollowingprocedure.
Afterthepartsareremoved,eliminateloctiteonthreadsbyapplyingloctiteremover,applynewloctite,andtheninstallandtightenthepartstothespeciedtighten-
ingtorquesbelow.Fordetailsaboutrecommendedloctiteandloctiteremover,refertoTable11-1,andfordetailsaboutthereplacementpartsandtheirtightening
torques, refer to Table 11-2.
Table 11-1
Recommended Manufacturer No. Applied parts Note
Loctite Henkel Loctite 577 PRESSURE RELIEF VALVE (3bar
and 10bar)
Applyloctitealloverfromtheendofexternalthreadtothe
secondridge.Afterinstallingtheparts,xthepartsforatleast
30 minutes
Loctite 5776 TEMPERATURE AND PRESSURE
RELIEF VALVE
Loctite remover Henkel Loctite 7200
Gasket Remover
PRESSURE RELIEF VALVE (3bar
and 10bar) and TEMPERATURE
AND PRESSURE RELIEF VALVE
Spray loctite remover over sealant on the threads, let the seal-
antsituntilsoft,andtheneliminateitwithawirebrush.
Note:Whenusingtheproductsabove,refertotheappropriatemanualsthatcomewiththeindividualproducts.
Table 11-2
Part name *1
Recommended tightening
torque [Nm] *2
PRESSURE RELIEF VALVE 3 bar 15 ± 1
PRESSURE RELIEF VALVE 10 bar 15 ± 1
TEMPERATURE AND PRESSURE RELIEF VALVE 15 ± 1
*1.Formoredetailsaboutthelistedpartsrefertothepartscatalog.
*2.Undertighteningandovertighteningthepartsaffectwaterseallife.Tightenthepartstotheappropriatetighteningtorques.
Wheninstallingthepartsthatarenotlistedabove,observethetighteningtorquesinaccordancewithTable
11 - 3 .
AlwaysuseanewO
- ringorgasket.
Table 11-3
Size
[inch]
Recommended tightening torque
[Nm]
Gasket
G1/4" 8 ± 1
G3/8" 15 ± 1
G3/4" 36 ± 2
G1" 42 ± 2
G13/4" 10 ± 1
Packing Strainer cover 40 ± 2
O-ring
Flowsensor 30 ± 2
Air vent (Automatic) 15 ± 1
Attachedpacking
Drain cock (primary circuit) 0.25 ± 0.05
Drain cock
(P-HEX sanitary circuit)
0.25 ± 0.05
Air vent (manual) 0.25 ± 0.05
Flarejoint(forwatercircuitparts) 35 ± 2
Aftertheprocedureiscomplete,ensurethatnowaterleaks.
OCH570C