Heraeus HS 9 Service Manual page 72

Service Instructions HERAsafe HS/12/18
B Field tests
B3 Electrical safety test
Acceptance according to NSF, 49, Annex F:
The electrical leakage must not exceed 500 mA (milliamp e-
re), and the cabinet ground circuit resistance must not ex-
ceed 0.15 .
Valid: 05.2001 / 50060091 / A
Troubleshooting:
Leakage detected: Check the connection lines
and terminal clamps of the cabinet-internal power
supply and the safety cabinet.
Ground resistance not correct: Check the
mains supply lines at the facility.
Ground faults: Check the cabinet grounding and
the mains supply lines at the facility.
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