Preparations For Commissioning; Start-Up - M&C EC Series Instruction Manual

Follow these instructions to connect the status alarm and power cables:
1. release the screws (7 pcs.) from the cooler hood and remove the hood;
2. put the cables (6-12 mm) through one of the cable glands in the bottom plate, and connect them
according to the electrical connections in Figure 5;
17

Preparations for commissioning

Before initial startup, all plant- and process-specific safety measures must be observed. It is mandatory for the
operator to complete the enclosed risk assessment of the product.
The gas exposure risk must be assessed by the operator with regard to the hazards posed by process and calibration
gas and the setup at the installation site (e.g. tubing, system cabinet/container/plant). If the risk assessment reveals
increased exposure hazards, further measures are required.
A visible label must be attached to the installation site in accordance with the risk assessment provided by the
operator.
18

Start-up

Qualified personnel
The operator must ensure that all work on the ECM-EX2 is carried out only by authorized and qualified personnel.
Observe the plant- and process-specific regulations and the regulations which are applicable to Ex zones.
Any work must only be carried out after the EX-free measurement has been completed. Immediately after finishing
the work, all safety and protective devices must be reattached or put into operation and tested.
The controlled cooling system of the ECM-EX2 permits automatic start-up of the cooler.
The following description applies to a start-up at an ambient temperature of > 8 °C [> 46.4 °F] only.
Warning
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The work described in this chapter can be carried out by qualified personnel. The
following knowledge is at least required for the work:
•
Instructed person in EX-protection
•
Trained person in the electrotechnical field
•
Detailed knowledge of the manual and the applicable safety regulations
Only carry out any work at the gas cooler, when the process and the environment of
the cooler is declared as an explosion-free zone. A zone is declared as explosion-free
zone, if it is free of explosive atmosphere.
Only open the protective cover in front of the temperature controller, when the
process and the environment of the cooler is declared as an explosion-free zone. A
zone is declared as explosion-free zone, if it is free of explosive atmosphere.
Connect the cooler to earth (electrical bonding terminal).
The bleeder resistor needs to have an overall value of < 10
ECM-EX2 | 1.03.01
Ω.
6
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