All pumping unit (pump, seal, coupling, motor and pump accessories) certified for use in an ATEX classi-
fied environment, are identified by an ATEX tag secured to the pump or the baseplate on which it is
mounted. A typical tag would look like this:
Figure 1: Typical ATEX pump nameplate
Table 2: Temperature class definitions
Code
Maximum permissible surface tem-
perature in °C | °F
Maximum permissible liquid tempera-
ture in °C | °F
T1
440 | 824
372 | 700
T2
290 | 554
267 | 513
T3
195 | 383
172 | 342
T4
130 | 266
107 | 225
T5
Option not available
Option not available
T6
Option not available
Option not available
* Maximum liquid temperature may be limited by the pump model and order specific options.
Temperature class definitions on page 9
is for the purpose of determining T'x' code for ATEX applications
with liquid temperatures exceeding 107ºC | 225ºF.
The code classification marked on the equipment must be in accordance with the specified area where
the equipment will be installed. If it is not, do not operate the equipment and contact your ITT Goulds
Pumps sales representative before proceeding.
WARNING:
•
Follow these special handling instructions if you have an Ex-approved unit.
•
The coupling guard used in an ATEX classified environment must be properly certified
and must be constructed from a spark resistant material.
•
All work on the product must be carried out by certified electricians and ITT-authorized
mechanics. Special rules apply to installations in explosive atmospheres.
•
All users must know about the risks of electric current and the chemical and physical
characteristics of the gas, the vapor, or both present in hazardous areas.
•
Any maintenance for Ex-approved products must conform to international and national
standards.
•
When pumping fluids with conductivity less than 1000 ps/m follow IEC TS 60079 32-1
guidelines.
•
The preventive maintenance section must be adhered to in order to keep the applicable
ATEX classification of the equipment. Failure to follow these procedures will void the
ATEX classification for the equipment. Bearing replacement intervals are given in the spe-
cific pump model IOM.
•
Do not insulate or allow the bearing housings to accumulate a dust layer as this can result
in excess heat generation, sparks and premature failure.
1.5 ATEX Considerations and Intended Use
Model JC Installation, Operation and Maintenance Instructions
9
