Goulds Pumps ICM - IOM - Manual (Page 16)

Installation and Operating Instructions
Model ICM/ICMP, for life grease lubrication
9330-050-en Revision 05
TM 5409 MPE/Re/Wm Page 8 Date 03/2003
2.5.3 Identification
The identification on the pump relates to the pump
section. A separate declaration of conformity must be
provided for the shaft coupling and motor and for
other attachments as well as corresponding identifica-
tion.
Example of the identification of the pump section:
CE Ex II 2 G/D T1-T... .
The identification indicates the theoretically available
range of the temperature classes. The admissible
temperature depending on the pump design are de-
rived in accordance with Section 2.5.6. The same
applies to the drive.
For an overall unit (pump, coupling, motor) with vari-
ous temperature classes, the lowest class in each
case applies as follows :
Example 1 : Pump T3, motor T4, coupling T4
T3 applies, i.e. the unit may only be used in atmos-
pheres which may ignite at temperatures <200° C
(+safety margin). The maximum medium temperature
of the pump for this example is 175° C (see table in
Section 2.5.6).
Example 2 : Pump T4, Motor T3, coupling T4
T3 applies, i.e. the unit may only be used in atmos-
pheres which may ignite at temperatures <200° C
(+safety margin).
2.5.4 Check of the direction of rotation
If there is also a risk of explosion during the
installation phase, the check of the direction of
rotation must under no circumstances be con-
ducted by briefly switching on the unfilled pump in
order to prevent an inadmissible rise in temperature at
the plain bearings.
Only perform the direction of rotation check
with the coupling disengaged! See also Sec-
tion 6.1.2.
2.5.5 Mode of operation of the pump
The pump may only be started with the suction side
shut-off element fully opened and the discharge side
shut-off element slightly opened. Start-up against a
closed check valve is also possible. The discharge
side shut-off element is to be regulated to the operat-
ing design point directly after run-up.
See also Section 5.4.1.
Operation with closed shut-off elements in the
suction and/or discharge lines is not permitted!
There is a risk that even after a short time
high surface temperatures on the pump hous-
ing may occur owing to rapid heating of the
liquid in the pump interior.
A rapid rise in the pressure inside the pump
involves the risk of overloading to the point of
bursting.
The pump must not be in operation in the
unfilled or partially filled state (dry run-
ning). This results in serious damage to
the pump and additional risks to the environment
can arise.
Dry-running cannot only occur with an insuffi-
ciently filled interior but also in the event of
high gas contents in the liquid medium.
Operation of the pump outside the admissible operat-
ing range may also lead to dry-running (e.g. due to
evaporation in the interior).
2.5.6 Temperature limits
In the normal operating condition the highest
temperatures are to be expected at the met-
talic can and in the area of the rolling bear-
ings.
In the case of liquids >40° C the surface temperature
of the pump housing is generally lower than the tem-
perature of the liquid.
If the pump is heated (e.g. heating jacket), it
must be ensured that the temperature classes
prescribed in the annex are observed.
The entire pump surface must have free contact with
the environment.
During operation of the pump it must be en-
sured that excessive deposits of dust are
prevented (regular cleaning) in order to pre-
vent the pump surface from heating to above the ad-
missible temperature.
The plant customer must ensure that the pre-
scribed operating temperature is observed. The
maximum admissible temperature of the liquid
medium at the pump inlet depends on the tem-
perature class and the selected lining material
required in each case.
The following table contains the resultant theoretical
limit values of the temperature of the liquid medium
allowing for the temperature classes according to
PrEN 13463-1.
Temperature class
acc. to PrEN 13463-1
Limit value of the temperature
of the liquid
LT HT
T6 1) (85° C)
T5 2) (100° C)
T4 (135° C)
T3 (200° C)
T2 (300° C)
T1 (450° C)
60° C 3)
75° C 3)
110° C 3)
175° C 3)
175° C 3)
175° C 3)
60° C 3)
75° C 3)
110° C 3)
175° C 3)
275° C 3) 4)
275° C 3) 4)
HT = High temperature
LT = Low temperature