Flowserve M-series PolyChem - Manual (Page 6)

USER INSTRUCTIONS PolyChem M-SERIES ENGLISH 71569218 07-11
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Page 6 of 60
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HOT (and cold) PARTS
If hot or freezing components or auxiliary heating
supplies can present a danger to operators and
persons entering the immediate area action must be
taken to avoid accidental contact. If complete
protection is not possible, the machine access must
be limited to maintenance staff only, with clear visual
warnings and indicators to those entering the
immediate area. Note: bearing housings must not be
insulated and drive motors and bearings may be hot.
If the temperature is greater than 80 ºC (175 ºF) or
below -5 ºC (23 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.
ALWAYS USE THE JACKBOLTS TO
SEPARATE THE POWER END FROM THE WET
END ASSEMBLIES.
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
ENSURE CORRECT LUBRICATION
(See section 5, Commissioning, startup, operation and
shutdown.)
NEVER EXCEED THE MAXIMUM
DESIGN PRESSURE (MDP) AT THE
TEMPERATURE SHOWN ON THE PUMP
NAMEPLATE
See section 3 for pressure versus temperature
ratings based on the material of construction.
NEVER OPERATE THE PUMP WITH
THE DISCHARGE VALVE CLOSED
(Unless otherwise instructed at a specific point in the
User Instructions.)
(See section 5, Commissioning start-up, operation
and shutdown.)
NEVER RUN THE PUMP DRY OR
WITHOUT PROPER PRIME (Pump flooded).
Operating the magnetic coupling dry may cause
immediate damage to the bearings, magnets, etc..
NEVER OPERATE THE PUMP WITH
THE SUCTION VALVE CLOSED
It should be fully opened when the pump is running.
NEVER OPERATE THE PUMP AT
ZERO FLOW OR FOR EXTENDED PERIODS
BELOW THE MINIMUM CONTINUOUS FLOW
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.
THE PUMP SHAFT MUST TURN
CLOCKWISE WHEN VIEWED FROM THE MOTOR
END
It is absolutely essential that the rotation of the motor
be checked before installation of the coupling spacer
and starting the pump.
PolyChem M-series pumps are sized
based on a specific application. In the event the user
elects to operate this pump in a service other than
what it was originally sized for, a Flowserve sales
engineer should be contacted to evaluate the new
application.
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 and pump equipment are suitably