Flowserve CPXV fitted with WW - Manual (Page 6)

CPXV - WW/CW USER INSTRUCTIONS ENGLISH 85392698 10-09
Page 6 of 36 flowserve.com
If the temperature is greater than 80 ºC (175 ºF) or
below -5 ºC (20 ºF) in a restricted zone, or exceeds
local regulations, action as above shall be taken.
HAZARDOUS LIQUIDS
When the pump is handling hazardous liquids care
must be taken to avoid exposure to the liquid by
appropriate siting of the pump, limiting personnel
access and by operator training. If the liquid is
flammable and or explosive, strict safety procedures
must be applied.
Gland packing must not be used when pumping
hazardous liquids.
PREVENT EXCESSIVE EXTERNAL
PIPE LOAD
Do not use pump as a support for piping. Do not mount
expansion joints, unless allowed by Flowserve in writing,
so that their force, due to internal pressure, acts on the
pump flange.
NEVER RUN THE PUMP DRY
Liquid level controls are recommended to avoid the risk
of dry running.
ENSURE CORRECT LUBRICATION
(See section 5, Commissioning, startup, operation and
shutdown.)
ONLY CHECK DIRECTION OF
MOTOR ROTATION WITH COUPLING ELEMENT/
PINS REMOVED
Starting in reverse direction of rotation will damage the
pump.
START THE PUMP WITH OUTLET
VALVE PART OPENED
(Unless otherwise instructed at a specific point in the
User Instructions.)
This is recommended to minimize the risk of
overloading and damaging the pump or motor at full or
zero flow. Pumps may be started with the valve further
open only on installations where this situation cannot
occur. The pump outlet control valve may need to be
adjusted to comply with the duty following the run-up
process. (See section 5, Commissioning start-up,
operation and shutdown.)
DO NOT RUN THE PUMP AT
ABNORMALLY HIGH OR LOW FLOW RATES
Operating at a flow rate higher than normal or at a flow
rate with no back pressure on the pump may overload
the motor and cause cavitation. Low flow rates may
cause a reduction in pump/bearing life, overheating of
the pump, instability and cavitation/vibration.
1.6.4 Products used in potentially explosive
atmospheres
Measures are required to:
•
Avoid excess temperature
•
Prevent build up of explosive mixtures
•
Prevent the generation of sparks
•
Prevent leakages
•
Maintain the pump to avoid hazard
The following instructions for pumps and pump units
when installed in potentially explosive atmospheres
must be followed to help ensure explosion protection.
For ATEX, both electrical and non-electrical equipment
must meet the requirements of European Directive
94/9/EC. Always observe the regional legal Ex
requirements eg Ex electrical items outside the EU may
be required certified to other than ATEX eg IECEx, UL.
1.6.4.1 Scope of compliance
Use equipment only in the zone for which it is
appropriate. Always check that the driver, drive
coupling assembly, seal and pump equipment are
suitably rated and/or certified for the classification of the
specific atmosphere in which they are to be installed.
Where Flowserve has supplied only the bare shaft
pump, the Ex rating applies only to the pump. The
party responsible for assembling the ATEX pump set
shall select the coupling, driver and any additional
equipment, with the necessary CE Certificate/
Declaration of Conformity establishing it is suitable for
the area in which it is to be installed.
The motor, coupling, pump thrust bearing and seal
can be made compliant with 94/9/EC ATEX Directive
for Equipment Categories 2 and 3 as required by the
duty conditions.
See the pump nameplate and Declaration of Conformity
for the pump classification. The pump column below
soleplate will also generally be to the same category
however in some applications the section of the pump
below soleplate and above liquid will have been
designed to Category 1, whereas above soleplate
Category 2 or 3 will apply. (See section 1.6.4.2.)
The pump will then be supplied with a copy of the
Certificate of Approval by a Notified Body and marked
with both categories. Users must pay particular
attention to pump operation and maintenance
instructions because of the hazard of the explosive
atmosphere.