Mitsubishi Electric EHSC-MEC Service Manual page 92

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 specified 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
Loctite Henkel
Loctite remover Henkel
Note: When using the products above, refer to the appropriate manuals that come with the individual products.
Table 11-2
Part name * 1
PRESSURE RELIEF VALVE (3bar)
PRESSURE RELIEF VALVE (5bar)
1
* For more details about the listed parts, refer to the parts catalogue.
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]
G1/4"
Gasket G3/8"
G1"
Packing Strainer cover
Flow sensor
O-ring
Air vent (Automatic)
Drain cock (primary circuit)
Attached packing
Flare joint (for water circuit parts)
After the procedure is complete, ensure that no water leaks.
OCH571D
No.
Loctite 5400
Loctite 7200 Gasket Remover
Recommended tightening
2
torque [Nm] *
15 ± 1
15 ± 1
Recommended tightening torque
[Nm]
8 ± 1
15 ± 1
42 ± 2
40 ± 2
30 ± 2
15 ± 1
0.25 ± 0.05
35 ± 2
Note
Apply loctite all over from the end of external thread to the second
ridge. After installing the parts, fix the parts for at least 30 minutes
Spray loctite remover over sealant on the threads, let the sealant
sit until soft, and then eliminate it with a wire brush.
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