Flowserve Guardian Sealless Metallic - Manual (Page 5)

GUARDIAN USER INSTRUCTIONS ENGLISH 71569212 08-11
Page 5 of 68 flowserve.com
If hot or freezing components or auxiliary heating
equipment can present a danger to operators and
persons entering the immediate area, action must be
taken to avoid accidental contact (such as shielding). 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.
Bearing housings must not be insulated and
drive motors and bearings may be hot.
If the temperature is greater than 80 °C (175 °F) o r
below -5 °C (23 °F) in a restricted zone, or
exceeds local regulations, action as above shall
be taken.
THERMAL SHOCK
Rapid changes in the temperature of the liquid within
the pump can cause thermal shock, which can result
in damage or breakage of components and should be
avoided.
NEVER APPLY HEAT TO REMOVE IMPELLER
Trapped lubricant or vapor could cause an explosion.
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.
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 (Casing Flooded)
Operating the magnetic coupling dry may cause
immediate damage to the containment shell and
bearings.
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 EXTENEDED PERIODS
BELOW THE MINIMUM CONTINUOUS FLOW
DO NOT START THE PUMP
WITHOUT PROPER LUBRICATION
Refer to bearing lubrication in Section 5.2.
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. Incorrect rotation of the pump
for even a short period can unscrew the impeller,
which can cause significant damage.
GUARDIAN G & H 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.
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.
EXCESSIVE PUMP NOISE OR
VIBRATION
This may indicate a dangerous condition. The pump
must be shut down immediately.
HAZARDOUS LIQUIDS
When the pump is handling hazardous liquids care
must be taken to avoid exposure to the liquid by
appropriate pump placement, limiting personnel
access and by operator training. If the liquid is
flammable and/or explosive, strict safety procedures
must be applied.