Personnel requirements
ITT disclaims all responsibility for work done by untrained and unauthorized personnel.
These are the personnel requirements for Ex-approved products in potentially explosive atmospheres:
•
All work on the product must be carried out by certified electricians and ITT-authorized mechan-
ics. Special rules apply to installations in explosive atmospheres.
•
All users must know about the risks of electric current and the chemical and physical character-
istics of the gas and/or vapor present in hazardous areas.
•
Any maintenance for Ex-approved products must conform to international and national stand-
ards.
Product and product handling requirements
These are the product and product handling requirements for Ex-approved products in potentially explo-
sive atmospheres:
•
Only use the product in accordance with the approved motor data stated on the nameplates.
•
The Ex-approved product must never run dry during normal operation. Dry running during service
and inspection is only permitted outside the classified area.
•
Before you start working with the product, make sure that the product and the control panel are iso-
lated from the power supply and the control circuit, so they cannot be energized.
•
Do not open the product while it is energized or in an explosive gas atmosphere.
•
Make sure that thermal contacts are connected to a protection circuit according to the approval
classification of the product.
•
Intrinsically safe circuits are normally required for the automatic level-control system by the level
regulator if mounted in zone 0.
•
The yield stress of fasteners must be in accordance with the approval drawing and the product
specification.
•
Make sure that the equipment is properly maintained:
•
Monitor the pump components and the end temperature of the liquid.
•
Maintain proper bearing lubrication.
•
Do not modify the equipment without approval from an authorized ITT representative.
•
Only use parts that have been provided by an authorized ITT representative.
Equipment for monitoring
For additional safety, use condition-monitoring devices. Condition-monitoring devices include but are not
limited to these devices:
1.2.5 Monitoring equipment
For additional safety, use condition-monitoring devices. Condition-monitoring devices include but are not
limited to these devices:
•
Pressure gauges
•
Flow meters
•
Level indicators
•
Motor load readings
•
Temperature detectors
•
Bearing monitors
1.2 Safety
8
Model 3409 Installation, Operation, and Maintenance Manual
