Current Meter Maintenance HS Model OSS-B1

1
Current Meter MaintenanceHS Model OSS-B1

• Hydrological Services Pty Ltd
• Presented to HiQ Engineering
• Brunei
• JULY 2009

2
Section 1Prior To Discharge Measurements
3
Prior To Discharge Measurements

• Remove fan assembly from carry case
• Turn fan carrier anti-clockwise

Anti-Clockwise
4
Prior To Discharge Measurements

• Separate fan carrier from shaft assembly (keep
  away from contact with any dirt particles)
• Hold the fan upright and ¾ fill with approved
  HS current meter oil

Use Lint Free Tissue
5
Prior To Discharge Measurements

• Replace axle and fan carrier, excess oil will be
  forced up through the capillary gap around the
  axle, ensure fan carrier is tightened
• Wipe the excess oil of the meter using lint free
  paper towel

Clockwise
6
Prior To Discharge Measurements

• Do not forget to close the oil bottle straight
  after usage to avoid contamination of the oil
• Slide the fan assembly into the body and use the
  stubby screwdriver to tighten the retaining
  screw to lock the fan assembly in place

7
Prior To Discharge Measurements

• Prior to spin test hold the current meter in the
  horizontal position and spin by hand for approx.
  one minute to get rid of the hydraulic pressure
• Spin test the meter against time to test the
  performance of the shaft and bearings

8
Prior To Discharge Measurements

• Spin test results are dependent on the fan type
• Connect your current meter to the counter using
  the lead provided (this will test that the lead,
  reed switch and counter are working prior to use)

OSS-B1 Spin Test OSS-B1 Spin Test
Fan No. Minimum Time (secs)
1 90
A 110
2 90
4 90
9
Section 2During and After Discharge Measurements
10
During and after Discharge Measurements

• After every discharge measurement, (or one
  hour of use), the current meter should be cleaned
  and refilled with oil, if continuing a discharge
  measurement.

11
During and after Discharge Measurements

• Undo the cleaning jar cap and ¾ fill with white
  spirit
• Remove fan assembly from meter body by undoing
  the retaining screw and separate the body from
  the fan

Cleaning Jar
12
During and after Discharge Measurements

• Remove fan carrier and shaft assembly (do not
  place in contact with dirt particles)
• Empty the old oil in a recycling container and
  dispose (do NOT re-use)

13
During and after Discharge Measurements

• Put the shaft and bearing assembly into the
  cleaning jar.
• Agitate the jar
• Fill up the fan with white spirit, place your
  thumb over the hole and shake vigorously for a
  few seconds.

14
During and after Discharge Measurements

• Blow dry the shaft assembly, fan carrier and fan.
• Re-assemble the fan, dry if discharge
  measurement is complete

15
During and after Discharge Measurements

• Wipe box clean and return the fan assembly to the
  case
• If continuing a discharge measurement, refill the
  fan with oil

16
During and after Discharge Measurements

• Spin test the current meter against time as shown
  in section 1
• After the spin test is performed connect your
  current meter to the counter using the lead, to
  test the lead, reed switch and counter.

17
Section 3Office Cleaning
18
Office Cleaning

• Office cleaning should be performed on a
  monthly basis or whenever the meter is dirty

19
Office Cleaning

• Separate fan carrier from shaft assembly

Anti-Clockwise
20
Office Cleaning

• Separate fan carrier (1) from shaft assembly (2)

1
2
21
Office Cleaning
Remove Bearing
Remove Nut
22
Office Cleaning
Remove Outer Spacer
Remove Inner Spacer
23
Office Cleaning
Fan assembly fully dismantled ready to clean
Remove Bearing
24
Office Cleaning
Place items in sink, filled with hot soapy water,
soak for at least 5 minutes
Clean items with a bottlebrush cleaner
25
Office Cleaning
Cleaning Fan
Cleaning Fan Carrier
26
Office Cleaning
Cleaning outer spacer
Rinse full assembly with tap water
27
Office Cleaning

• Place full assembly on lint free tissue
• Ready to dry and re-assemble
• Rinse all items in white spirit prior to
  re-assembly

28
Office Cleaning
Dry Fan
Dry Fan Carrier
29
Office Cleaning
Dry Inner Spacer
Dry Outer Spacer
30
Office Cleaning
Blow Dry Bearing Nut
31
Office Cleaning
Assemble Inner Spacer
Start Shaft Assembly, Bearing First
32
Office Cleaning
Assemble Bearing
Assemble Outer Spacer
33
Office Cleaning
Dip shaft assembly in white spirit to lubricate
bearings
Assemble axle nut
34
Office Cleaning
Blow Excess White Spirit
Assemble Axle With Fan Carrier
35
Office Cleaning

• Re-assemble fan and place in carry case

Clockwise
36
Section 4Calibration
37
Calibration

•          Re-calibrate the current meter every
  300 hours of use or once a year which ever
  comes first (see Hydrological Services
  calibration certificate for details)
•          To minimise freight costs, send only
  the body and fans requiring re-calibration
• Note Hydrological Services provides a
  re-calibration and repair service for all types
  of current meters.

38
Questions?