Chromalox PN403-1 - Manual (Page 5)

5
Third Party Certifications
E4 Moisture Resistant Enclosure Certifications
North
American
Designations(s)
Canadian
Designation(s)
European
Designation(s)
International
Designation(s)
Rating NEMA 4 NEMA 4 IP66 IP66
Agency(s)
Manufacturers
Declaration
Manufacturers
Declaration
E2 Moisture Resistant Enclosure Certifications
North American
Designations(s)
Canadian
Designation(s)
European
Designation(s)
International
Designation(s)
Rating Explosion
Resistant
Explosion
Resistant
Explosion
Resistant
Explosion
Resistant
Agency(s) CSAus CSA ATEX IECEx
Ratings Class I, Div. 1
Groups B, C & D
Class I, Div. 1
Groups B, C & D
0359
II 2 G
Ex d IIB+H2 Gb
T1 to T6
Ex d IIB+H2 Gb
T1 to T6
Class II, Div. 1
Groups E, F & G
Class II, Div. 1
Groups E, F & G
IP66 IP66
Class I Zone 1
AEx d
IIB + H2 Gb
T1 to T6
Class I Zone 1
Ex d
IIB + H2 Gb
T1 to T6
-50˚C < Ta < +60˚C
*Note: Temps over T3 (200˚C) require stand-offs for third-party listing. Refer to IECex and
ATEX certificates for stand-off dimensions.
Operation
FIRE OR EXPLOSION HAZARD. To avoid possi-
ble damage to the heater, do not energize until
the tank is filled with fluid. Recommended fluid
level is 2” above the heater tube or pipe.
FIRE or EXPLOSION HAZARD. Do not open en-
closure when energized. Do not open enclosure
when an explosive gas atmosphere is present.
1. Do not operate heaters at voltages in excess of that
stamped on the heater, since excess voltage will
shorten heater life.
2. Heaters should not be operated in environments
with factors that can destroy the electrical insulating
characteristics of the ceramic insulators. Foreign
contaminants can create leakage (shock) hazards,
permanent heater damage, or cause heater failure
and therefore should be avoided.
For initial operation and tuning the control scheme:
1. Turn the master circuit breaker off and open the
control box door.
2. Set the indicating temperature control at the de-
sired temperature and the over-temperature cutout
at 50°F above this temperature.
3. Interlock the liquid level control with the cutout de-
vice.
4. Close the control box door and turn the circuit
breaker on. To energize the heater circuits, turn the
on-off selector switch to the “on” position.