Standard Operating Procedures
IN OPERATING DEEP WELL PUMP
BEFORE YOU START
• Make sure that you are properly oriented and
knowledgeable to the location, functions and how to
operate/manipulate the following:
- Circuit breaker, switches, fuses, relays, reset button, autotransformer and ( VFD ) variable frequency drive of the
motor control panel ( MCC ).
- Metering devices and gauges like voltmeter, ammeter,
pressure gauge and flow meter.
- Discharge valve, blow-off valve, check valve and pressure
transmitter.
• Open the MCC with the circuit breaker OFF and check
visually for its physical condition, signs of overheating, loosed
or detached wires, burnt components particularly in the power
circuit and ensure that they are in good condition. Report signs
of deterioration to the maintenance personnel.
• Always make it a point to go over the operation log book
before powering up the motor and find out the important
events that has transpired before your shift of duty.
• Know the operating current and voltage of the submersible
motor. Refer to the data on the logbook. Set the auto-man
selector switch to OFF and then turn ON the main circuit
breaker of the MCC.
• Check if the supply line to line voltages are in accordance
with the specified values or within safe operating range of the
motor such as the following:
- The supply line voltages should not exceed ± 10 % of the
rated voltage of the motor.
Example:
Rated motor voltage
Allowable voltage range
220 volts
198 – 242 volts
440 volts
396 – 482 volts
- The difference between line to line voltages should not
exceed 3%. To compute the percent (%) difference of line
to line voltages, apply the formula;
% difference = ( max. line to line voltage – average line to
line voltage ) ÷ average line to line voltage x 100
Example:
Voltmeter Reading
450 volts
445 volts
465 volts
Average voltage = ( 450 + 445 + 465 ) ÷ 3 = 453.33 volts
% Difference = ( 465 – 453.33 ) ÷ 453.33 x 100 = 2.57 %
• Three line to line voltages must be able to read on the volt
meter. Never attempt to start the pump with single phase
electrical power supply. Some MCC however, are automatically
inhibited from starting with abnormal power supply condition.
• Close fully the discharge valve, open the blow-off valve at
1/3 opening and set the ammeter transfer switch to OFF
position.
STARTING THE PUMP UNIT
• After satisfying the above requirements, start the submersible pump
by setting the selector switch to manual mode, then press the start
button. Should you want to operate in automatic mode, set the
selector switch to automatic mode and no need to press the start
button.
• Once the motor control ( MCC ) have commenced starting sequence,
observe its operation. If its controller is a reduce voltage ( RVAT ) will
shift state from “starting” to “running” within 4 to 5 seconds, and if the
motor control is a variable frequency drive ( VFD ) the output frequency
will increases gradually until the set frequency is obtain. This time, fully
open the blow-off valve, monitor the condition of water coming out of
the blow-off header and also monitor the line current readings.
• If in starting you have encountered trouble, determine the cause. If
it is a minor one, fix it. If it is a major one and you cannot repair it, open
the main circuit breaker and report immediately to the maintenance
unit by a phone call.
• Divert water output into the distribution pipe when the water
coming out of the blow-off header is already clear in color. However,
blow-off must be carried out not less than five minutes even if water is
clear in the first time. After this, open fully the distribution valve, then
gradually close fully the blow-off valve while observing the discharge
pressure gauge as you do this.
• Turn On the chlorine dosing pump and make sure that is working
properly.
DURING OPERATION
• Always be vigilant and alert. Be sure to respond to an emergency in
order to protect the equipment and facilities from serious and further
damages.
• Make frequent inspection of the volt meter, ammeter, discharge
pressure gauge and flow meter to determine that the pump unit is
functioning normally.
• Record properly and correctly the line voltages, line currents,
Kilowatt hour, discharge pressure, discharge flow and flow totalizer
reading on the operation log sheet. Always analyze if these values are
in accordance with the normal operation.
• Record in the logbook all important informations and events
relevant to the smooth and efficient operation to be passed to
the incoming personnel. Make it a habit to go over the logbook
every time you assume your tour of duty. Maintain a separate
record for all repair and preventative maintenance done on
pumping unit and facilities.
• Always observe the schedule of operation. Never deviate
from it unless approved by the office or due to an emergency.
STOPPING THE PUMP UNIT
- Stop the operation according to operation schedule.
- Throttle the discharge valve at 1/3 opening, then press the
stop button.
- Fully close the discharge valve.
- Record the time, hour-meter reading, flow totalizer
reading and the kilowatt-hour reading when the pump is
stopped.
- Turn-Off the main circuit breaker at the MCC.
Prepared and Submitted by:
Approved by:
Nathaniel P. Gueco
Jorge P. Gumba
OIC, Production Division
General Manager
Standard Operating Procedures
IN OPERATING STANDBY GEN-SET
Before starting the gen-set, check the following:
• Cooling System
- Check coolant level. Maintain level 13mm to the bottom of
filler neck.
• Engine Oil Level
- Maintain oil level between the ADD and FULL marks of the
oil level gauge.
• Batteries
- Clean top of batteries. Check electrolyte level. Check for
loose connections and battery voltage.
• Fuel System
- Check fuel tank level. Check for leaks.
• Belts
- Inspect for worn, broken or looose belts. Adjust if necessary.
• Gauges
- Check the condition of all gauges. Repair or replace any broken
gauge.
• Control Panel
- Visually inspect; check for loose, broken or damaged wiring
components.
• Generator
- Check for moisture, dust, oil, greases. Clean as needed.
• Walk-Around Inspection
- Inspect engine, radiator and generator for debris, loose or broken
fittings, hoses, or wires and guards. Repair as necessary.
• If all of the above are in normal conditions, start the generator by
pressing the Start Button.
• Warm-up the gen-set for 5 minutes before loading. Check
the following:
- Frequency
60 Hz
- RPM
Refer to the name plate of the gen-set
- Voltmeter reading
Refer to the name plate of the gen-set
- Ammeter reading
Zero reading when no load
- Engine oil pressure gauge
Check for proper operating oil pressure
- Engine jacket water temperature
70 to 90 ⁰C during normal operation
- Fuel pressure gauge
Check for proper operating fuel pressure.
- Leaks and noises
Check for leaks and unusual noises.
• If all of the above are in normal conditions, shift the
transfer switch from SFELAPCO power to Stand-by Gen-set
power position.
• Check the following before loading the gen-set:
-
Ammeter reading
Voltmeter reading
KW reading
Frequency
Power Factor
• If all of the above are in normal conditions, start loading the
Gen-set. ( Follow SOP in starting deepwell pump. )
• Make frequent inspection of the voltmeter, ammeter,
frequency meter, KW meter, engine water temperature gauge
and engine oil pressure gauge to determine if the gen-set is
functioning normally.
STOPPING THE GENSET
• Stop the pump and all other electrical loads. ( Follow SOP in
stopping deepwell pump. )
• Shift the transfer switch from stand-by gen-set power to
SFELAPCO power position.
• Allow standby gen-set to cool down at idle running for at
least 10 minutes before stopping.
• Stop the Gen-set by pressing the Stop Button.
• Record the fuel tank level after stopping the stand-by
genset.
Prepared and Submitted by:
Approved by:
Nathaniel P. Gueco
Jorge P. Gumba
OIC, Production Division
General Manager