Flowserve MEN - Manual (Page 19)

MEN USER INSTRUCTIONS ENGLISH 71576288 – 11-09
Page 19 of 36
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5.3 Starting the pump
5.3.1 Bring controls and preparation before the
first starting and after each service call
Necessarily:
Check the tightening of the different plugs.
Check that the gland lightly tightens the packing
rings.
Risk of seal ring overheating.
If a mechanical seal is fitted, refer to the
standard pump instructions.
5.3.2 Start the pump and diesel engine
This initial start-up of pump and diesel
engine may only be carried out by a qualified
FLOWSERVE employee.
A noise protection helmet must be worn by all
persons present in the vicinity.
Suction valves must be fully open
when pump is running. Never run the pump dry, it
will cause damage.
*Close the valve at discharge
* Start up the diesel engine and check the discharge
pressure.
If pressure is satisfactory, slowly OPEN the outlet
valve.
Do not run the pump with the outlet valve closed
during initial start-up and after each maintenance
intervention.
If NO pressure, or LOW pressure, STOP the pump.
Refer to fault finding chart for fault diagnosis.
5.3.2.1 Starting the diesel engine
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Initial start-up:
* Start the plant at moderate speed with push
buttons to emergency start-up position 1 or 2.
* Check that the oil pressure indicated on the
switching enclosure pressure gauge complies with
the values given in the engine manual. If the oil
pressure indicated on the pressure gauge is low with
respect to these instructions, place the switch in the
“Off” position and stop the engine using the direct
stop control indicated "STOP" located on the
injection pump until the engine is entirely at
standstill.
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Check engine cooling system:
* Check that the water in the primary cooling circuit
is flowing freely (evacuation of lost water, discharge
from heat exchanger), it must be possible to see and
feel this flow.
* Water flow must be visibly unrestricted on the
pump discharge side, with no shut-off elements
incorporated. This discharge generally occurs at
35/45 °C.
* Cooling water flow-rate is limited by an adjustable
throttle to obtain a flow-rate of approximately 30
liters/hour per kW.
* New circuits often contain impurities which may
quickly clog the protection filter. If the raw water flow
decreases, simply remove the filter and clean it until
the circuit is clean. This operation is to be repeated.
* The manual by-pass on the cooling circuit main
pipe is only used to ensure cooling, if necessary,
when the plant cannot be shut-down during an
intervention on the raw water filter or the hydraulic
valve.
ENSURE THE RAW WATER FILTER ON THE
MAIN COOLING CIRCUIT IS WEEKLY CLEANED.
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Checks and adjustments:
* Progressively increase the engine speed until the
setting limiter is attained. This limiter is set to obtain
an off-load speed of 50 to 100 rpm above nominal
speed in order to compensate for approximately 5 %
motor slip between off-load and full-load engine
speeds.
* With the plant running normally, progressively
open the pump discharge valve until the specified
performance is attained.
* Check the water temperature with the thermostat
on the switching enclosure; this is only attained
progressively, especially at low pump flow-rate.
If the temperature is above 95 °C, turn the selector
switch to “Off” and activate the switch-off control
marked STOP.
In the beginning, when on load, the new
plant sometimes emits exhaust smoke after
start-up. This is perfectly normal and quickly
disappears. Allow sufficient air circulation
during initial start-up (work with doors open),
and/or wear a protection mask.
The switching enclosure is designed to detect and
signal certain anomalies.
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When running:
* Oil pressure too low
* Overheating