Magnetrol Echotel 910 - Reference Information and Specifications; Troubleshooting Common Issues; Agency Approvals

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3.0 Reference Information
3.1 Troubleshooting
Caution: In hazardous areas, do not remove housing cover until power is disconnected and atmosphere is deter-
mined to be safe.
3.1.1 No signal with level change
a. Verify power and control circuit wiring.
b. Make sure liquid is filling the transducer gap.
c. Check for dense foam on surface or dried product in the gap. Unit will not function properly if
either condition exists.
d. Check transducer phone plugs for proper insertion in J1 and J2.
e. If control circuit does not actuate, consult factory.
3.1.2 Calibration
Model 910 switches do not require field calibration. The set point is not adjustable.
3.1.3 Switch chatter
a. Check voltage to make sure it is within tolerances shown in Section 3.3.2.
b. Check for turbulence. Relocate control or isolate from turbulence.
c. Check for excessive aeration.
d. Consult factory.
3.1.4 Control output will not de-actuate
a. Check transducer for plugged gap.
b. Check for dense foam or liquid in gap.
c. If control circuit does not de-actuate, consult factory.
3.2 Agency Approvals
FM 910-XXXX-XXX Explosion Proof Class I, Div. 1; Groups C & D
Class II, Div. 1; Groups E, F, & G
Class III, NEMA Type 4X
910-XXXX-XXX Non-Incendive Class I, Div. 2; Groups A, B, C, & D
Class II, Div. 2; Groups F & G
Class III, NEMA Type 4X
CSA 910-XXXX-XXX Explosion Proof Class I, Div. 1; Groups C & D
Class II, Div. 1; Group E, F, & G
Class III, Type 4X
910-XXXX-XXX Non-Incendive Class I, Div. 2; Groups A, B, C, & D
Class II, Div. 2; Groups E, F, & G
Class III, Type 4X
ATEX 910-5XXX-XXX II 1/2 G EEx d II C T6/EEx e II T6
910-PXXX-XXX
AGENCY APPROVED MODEL PROTECTION METHOD AREA CLASSIFICATION
51-604 Echotel Model 910
These units have been tested to EN 50081-2
and EN 50082-2 and are in compliance with
the EMC Directive 89/336/EEC.