SMAR ld301, Operation And Maintenance Instruction Manual

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LD301 – Operation and Maintenance Instruction Manual
1.4
Fig 1.3 – Position of the Transmitter and Taps
ELECTRIC WIRING
Reach the wiring block by removing the Electrical Connection Cover. This cover can be locked closed
by the cover locking screw (Figure 1.4). To release the cover, rotate the locking screw clockwise.
Fig. 1.4 – Housing Rotating Set Screw
The wiring block has screws on which fork or ring-type terminals can be fastened. See Figure 1.5.
HAZARDOUS AREAS
In hazardous areas with explosion proof requirements, the covers must be tightened with
at least 8 turns. In order to avoid the penetration moisture or corrosive gases, tighten the
O’ring until feeling the O'ring touching the housing. Then, tighten more 1/3 turn (120
° ) to
guarantee the sealing. Lock the covers using the locking screw.
In hazardous zones with intrinsically safe or nonincendive requirements, the circuit entity
parameters and applicable installation procedures must be observed.
Cable access to wiring connections is obtained by one of the two conduit outlets. Conduit
threads should be sealed by means of code-approved sealing methods. The unused outlet
connection should be plugged and sealed accordingly.
Explosion proof, nonincendive and intrinsic safety Factory Mutual certification are standards
for
LD301 (see control drawing in Appendix A).
Should other certifications be necessary, refer to the certification or specific standard for
installation limitations.