English (GB)
3
2. Servicing S pumps with explosion-proof
motors
S pumps, range 72 to 78 have the following explosion protection
classification:
Service work on Ex pumps must be carried out by Grundfos or a
workshop authorised by Grundfos. Violation of this requirement
will invalidate the Ex classification of the pump.
Overhauled and repaired explosion-proof pumps are provided
with a repair plate giving the following information:
• the repair symbol R
• name of registered trade mark of the repairing workshop
• workshop reference number relating to the repair
• date of overhaul or repair.
In case of subsequent repairs, the existing repair plate should be
replaced by a new, updated repair plate and earlier markings
must be recorded.
The repairing workshop must keep records of performed
overhauls and repairs together with records of all previous
overhauls, repairs and possible modifications. Copies of the
repairing workshop’s detailed records should be filed by the
owner or operator together with the original type certificate of the
explosion-proof motor in question.
3. Safety
For safety reasons, all work in pits must be supervised by a
person outside the pump pit.
Pits for submersible sewage and wastewater pumps contain
sewage and wastewater with toxic and/or disease-causing
substances. Therefore, all persons involved must wear
appropriate personal protective equipment and clothing, and all
work on and near the pump must be carried out under strict
observance of the hygienic regulations in force.
If Grundfos is requested to service the pump, Grundfos must be
contacted with details about the pumped liquid, etc., before the
pump is returned for service. Otherwise Grundfos can refuse to
accept the pump.
Possible costs of returning the pump are paid by the customer.
However, any application for service (no matter to whom it may
be made) must include details about the pumped liquid if the
pump has been used for liquids which are injurious to health or
toxic.
4. Identification
4.1 Nameplate
Fig. 1 Pump nameplate
All pumps can be identified by means of the nameplate on the
motor top cover, see fig. 1.
72
Direct drive, 50 or 60 Hz CE 1180 II2 G Ex bc d IIB T4
Frequency converter
drive CE 1180 II2 G Ex bc d IIB T3
74, 78
Direct drive, 50 or 60 Hz Only on request
Frequency converter
drive Only on request
Warning
Pump installation in pits must be carried out by
specially trained persons.
Work in or near pits must be carried out
according to local regulations.
Warning
Before attempting to lift the pump, make sure the
rated capacity of the lifting equipment (lifting
chain etc.) is adequate for the lifting work.
The rated capacity of the lifting equipment is
stated on the equipment nameplate. The weight
of the pump is stated on the pump nameplate.
If a pump has been used for a liquid which is
injurious to health or toxic, the pump will be
classified as contaminated.
TM05 8220 2113
Pos. Description
1 Type designation
2 Product number
3 Serial number
4 Maximum head (m)
5 Number of phases
6 Voltage, delta connection
7 Voltage, star connection
8 Rated power input (kW)
9 Power factor (Cos φ)
10 Production code (YYWW)
11 Model
12 Maximum liquid temperature
13 Maximum flow rate (l/s)
14 Enclosure class according to IEC 60529
15 Frequency (Hz)
16 Rated speed
17 Current, delta connection
18 Current, star connection
19 Rated power output P2
20 Insulation class
21 Weight
