Grundfos SE - 14 Leakage Test

14. Leakage test
1. Remove the seal plug (193) from the motor top cover.
193
TM084611
2. Seal the power and sensor cable user ends, possibly with heat sinks.
3. Pressurize the motor top compartment with 0.6 bar pressure through the open seal plug hole, for 5 minutes. THe pressure medium must
be either N
2
or dried air.
The natural moisture of compressed air may trigger the moisture switch inside the motor top compartment. Use N
2
or dried air for
the pressure test.
Free net volume [dm
3
]
SL SE
Motor top compartment + motor + leakage chamber 16 16.3
Cooling liquid compartment 15.4 40.7
V
TM084628
V The two separated volumes which are involved in the leakage test.
4. Check the pressure loss after 5 minutes. Pressure loss must be less than 0.1 bar.
93
English (GB)