Mitsubishi Electric EHPT20X-VM2HA, Руководство по обслуживанию

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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
tightening 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. Note
Loctite Henkel Loctite 577
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
Loctite remover Henkel Loctite 700 Gasket Remover Spray loctite remover over sealant on the threads, let the sealant
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
PARTS CATALOG
Recommended tightening
torque [Nm] *2
Page No. Part No. Part name *1
3, 5, 7, 9 1 S70 C18 404 PRESSURE RELIEF VALVE 3bar
15 ± 1
11 15 S70 C19 404 TEMPERATURE AND PRESSURE RELIEF VALVE
15 ± 1
11 8 S70 C11 55 STAT POCKET ASSEMBLY
12 ± 1
*1. For more details about the listed parts refer to the parts catalogue included in this manual.
*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
1/4"
8 ± 1
3/8"
15 ± 1
3/4"
36 ± 2
1"
42 ± 2
1 1/"
42 ± 2
1 3/4"
10 ± 1
O-ring
Strainer cover
45 ± 4.5
Flow switch 8 ± 1
Air vent (Automatic) 15 ± 1
Attached packing
Drain cock (primary circuit) 15 ± 1
Air vent (manual) 15 ± 1
Flare joint (for water circuit parts)
35 ± 2
After the procedure is complete, ensure that no water leaks.