salmson NEX, Installation And Operating Instructions Manual

Page: 34 / 92

ENGLISH
6
Operating the pump at lower flow rates may cause a
reduction of ball bearings/bearing lifetime, overheating in
pump sealing chamber, instability and cavitations/vibration.
Never remove protecting covers or coupling guard when
pump is ready to run. Those parts can only be removed
during maintenance operations.
2.5 SAFETY INSTRUCTIONS FOR
INSPECTION AND INSTALLATION
WORK
The operator must ensure that all inspection and
installation work are carried out by authorized and qualified
personnel. The operators must be sufficiently informed and must
know the content of these instructions and of the incorporated
materials instructions before any operation is carried out on
pumps and accessories.
Access to the product must only be carried out when pump
is at a standstill. It is mandatory that the procedure
described in the installation and operating instructions for
shutting down the pumpset are fully respected.
All protections and security devices must be reactivated or
switched on immediately after works are ended.
2.6 MODIFICATION OF EQUIPMENT
AND USE OF SPARE PARTS
Modifying the product is only permitted after agreement of
Salmson. Use of genuine spare parts and accessories authorized
by the manufacturer ensure safety and proper work of the pump.
2.7 IMPROPER USE :
The operating safety of the product is only guaranteed for
conventional use and in accordance with the technical offer and
this operating instructions. The limit values indicated in the
relevant catalogue/data sheet must not be exceeded.
2.8 PUMPSET DELIVERED WITHOUT
MOTOR
When pumpset is delivered without any motor (a CE integration
certificate has been supplied with the pump) it is the end-user’s
responsibility to ensure that all regulation requirements are
respected to get a CE marking.
Certification of the complete pump set will be from
integrator responsibility. He will ensure that aIl
specifications listed in this instructions are fully respected.
2.9 SECURITY INSTRUCTIONS TO BE
APPLIED ON EQUIPMENTS USED IN
POTENTIALLY
EXPLOSIVE
ATMOSPHERE
This chapter contains operating instructions that have to be
considered when using the pump in a potentially explosive
atmosphere. The ATEX additive supplied with the pump will be
considered as well.
This chapter indicates supplementary instructions to :

Avoid excessive surface temperature,

Avoid build up of explosive mixture,

Avoid sparks creation,

Prevent leakages,

Ensure proper maintenance to avoid hazard.
The following instructions for the pump and pump units shall be
followed when the equipment is installed in a potentially
explosive atmosphere. Ex-proof protection is ensured only if the
pump unit and supplied accessories are installed according
instruction given in this instruction and operating manual. Both
electrical and non-electrical equipment must meet the
requirements of European Directive ATEX 94/9/EC.
2.9.1 SPECIFIC MARKING INST RUCTIONS FOR
ATEX
An example of ATEX equipment marking is shown hereunder for
information. Dedicated ATEX classification is engraved on pump
nameplate and indicated in the ATEX additive :
II-2Gc(x)-Exd-IIBT4
With :
EQUIPMENT GROUP :
II = Non-mining
CATEGORY :
2 = high protection (zone 1)
3 = normal protection (zone 2)
GAS or DUST :
G = Gas
Those pumps are not « D » Dust certified.
PUMP PROTECTION :
c = safe by construction
X = respect special instruction for equipment integration
MOTOR ENCLOSURE :
Exd = flameproof
Exd(e) = flameproof frame and increased safety junction box
GAS GROUP :
IIA - Propane
IIB - Ethylene
IIC - Hydrogen
MAXIMUM SURFACE TEMPERATURE (Temperature class to
ATEX 94/9/EC) :
T1 = 450°C
T2 = 300°C
T3 = 200°C
T4 = 135°C
T5 = 100°C
T6 = 85°C
T(x) = variable temperature or pump used in several areas.
2.9.2 FLUID TEMPERATURE
Ensure that the equipment temperature class is suitable for
the hazard zone. It is the plant operator’s responsibility to
select the Atex zone in which the pump is installed.
Pump temperature class is as stated on the nameplate. It is based
on a maximum ambient temperature of 40°C. (ask SALMSON for
use in higher ambient temperatures).
The surface temperature taken on pump surface is influenced by
the temperature of the handled liquid. The maximum permissible
temperature depends on the ATEX temperature class and must
not exceed the values indicated in the ATEX additive attached to
the pump.
The shaft seal and bearings temperature rise due to the minimum
permitted flow rate are taken into account.
The maximum fluid temperatures indicated below are given
accordingly :
T1

400°C
T2

275°C
T3

180°C
T4

115°C
T5

80°C
T6

need SALMSON approval
If there is a risk to run the pump on a closed discharge valve
it is requested to monitor surface temperature. Motor
overload trips should be correctly calibrated. Proceed with regular
cleanings if pump is installed in dirty or dusty environment.