7. VALORIZACIÓN DE ALTERNATIVAS
7.3. SOLUCIONES EN BASE A COLECTORES PÚBLICOS
7.3.1. Sistemas de Recolección
Ref. Problem Ref. Possible Cause Remedy
6A Gauge Out of Adjustment - Manifold or Annular Pressure Gauges
1. Shock due to rough treatment 1. Close accumulator isolator valves 2. Stop pumps
3. Open bleeder valve and bleed off manifold pressure
4. Remove gauge face covering
5. Adjust gauge indicator to zero setting with a thin screwdriver blade
6. Replace gauge face cover
7. Loosen gauge fitting and bleed off any trapped air
8. Re-tighten fitting 9. Close bleeder valve
10. Open accumulator isolator valves 11. Start pumps and pressure up system 12. After full pressure is indicated:
a. Close accumulator isolator valves b. Stop pumps
c. Open manifold bleeder valve and bleed off pressure in 500 PSI increments
d. Observe gauge reaction each time e. When no manifold pressure remains,
gauge should read zero (0) PSI 13. Close manifold bleeder valve 14. Open accumulator isolator valves 15. Start pumps and restore system pressure Gauge Out of Adjustment -
Accumulator Pressure Gauges
1. Shock due to rough treatment 1. Stop pumps
2. Open bleeder valve and bleed off manifold pressure
3. Remove gauge face covering
4. Adjust gauge indicator to zero setting with a thin screwdriver blade
5. Replace gauge face cover
6. Loosen gauge fitting and bleed off any trapped air
7. Re-tighten fitting 8. Close bleeder valve
9. Open accumulator isolator valves 10. Start pumps and pressure up system 11. After full pressure is indicated:
a. Stop pumps
b. Open manifold bleeder valve and bleed off pressure in 500 PSI increments
c. Observe gauge reaction each time d. When no manifold pressure remains,
gauge should read zero (0) PSI 12. Close manifold bleeder valve 13. Open accumulator isolator valves 14. Start pumps and restore system pressure Gauge Out of Adjustment - Fluid
Filled Gauges
1. Shock due to rough treatment 1. Remove defective gauge and replace with a known working unit
2. Send the defective gauge to vendor for factory calibration.
An alternate method of checking a faulty gauge can be used:
1. Connect the faulty gauge supply line to a common manifold with a gauge of known accuracy.
2. Adjust faulty gauge if possible.
3. Acceptable indication limits are ± 50 PSI from true pressure
Ref. Problem Ref. Possible Cause Remedy 6B Gauge Responds Slowly -
Accumulator Pressure Gauges
1. Supply line or snubber clogged - Accumulator Pressure
When gauge responds slowly or in an erratic manner during operation:
1. Stop pumps
2. Close accumulator isolator valves
3. Open manifold bleeder valve to relieve system pressure
4. Disconnect gauge supply line. If pressure gauge is installed with a snubber:
a. Remove snubber from gauge and connect to gauge supply line
b. Start air operated pump c. Slowly close bleeder valve
d. If fluid does not pass through snubber it is blocked and should be replaced
i. Stop pump
ii. Open manifold bleeder valve iii. Remove snubber and install a new one
on the gauge
5. Purge supply line with hydraulic fluid by starting one air operated pump only
6. Reconnect supply line to gauge assembly 7. Close bleeder valved
8. Open accumulator isolator valves 9. Operate air pump
10. If gauge is still sluggish or erratic, replace the gauge
Gauge Responds Slowly - Manifold and Annular Gauges
1. Supply line or snubber clogged - Manifold and Annular Gauges
1. Place valves in center position
2. Reduce hydraulic pressure to zero (0) by adjusting regulators
3. Remove tubing and snubber from gauge 4. If gauge indicates pressure, re-calibrate to zero
(0)
5. While hydraulic tubing is disconnected from gauge, increase pressure from regulator, if: a. Fluid flows freely from open tube:
i. Reduce pressure back to zero (0) ii. Attach snubber to the hydraulic tubing iii. Increase pressure
b. No fluid escapes, the snubber is blocked and should be replaced
6. Reassemble tubing, snubber and gauge 7. Cycle regulated fluid pressure to 1000 PSI and
back down again to zero
8. Check that gauge indicates zero (0). If it does not, replace gauge with a known working unit
Produced By: Entrada International, Inc. 2002
Page 61 of 91
6.7 REGULATOR PROBLEMSRef. Problem Ref. Possible Cause Remedy
7A Air Operated Hydraulic Regulator Manually Operated Hydraulic Regulator
1. Damaged Seals or Debris on Sealing Surfaces of Air Operated Hydraulic Regulator
When hydraulic fluid pressure remains stable, and regulator continues to vent to reservoir:
1. Place function control valves on control manifold in center position
2. Observe return lines through inspection ports 3. Locate air regulator which supplies pilot
pressure to the fluid pressure regulator 4. Turn the air regulator handle from closed to full
open
5. Repeat this procedure several times
6. If venting of air operated hydraulic regulator valve continues, the valve should be replaced or repaired
7. If valve regulates properly, place function valves in normal DRILL AHEAD position (see Installation Section.)
2. Diaphragm Housing of Pressure Regulating Valve Is Leaking Air
This condition may be caused by a damaged or loose gasket in the diaphragm housing:
1. Close accumulator isolator valves 2. Stop pumps
3. Open manifold bleeder valve and relieve pressure
4. Reduce pressure on air regulator to zero 5. Remove air pilot line from top of diaphragm
housing
6. Remove upper half of diaphragm housing 7. Remove and inspect gasket
8. Replace gasket if damaged
9. Reassemble and tighten bolts evenly around the diaphragm housing flange
10. Connect air pilot line to top of diaphragm housing
11. Check all connections for potential air leaks 12. Close bleeder valve
13. Open isolator valves
14. Start pumps and pressure up system 3. Manual Air Regulator Leaking The air regulator is located on top of the hydraulic
manifold next to the Unit-Remote selector lever: 1. Place Unit-Remover selector valve in UNIT
position
2. Regulate air pressure up and down from zero to maximum
3. Observe for fluctuation in gauge response 4. Check for air leaks on air regulator 5. Replace faulty air regulator
6. Replace Unit-Remote selector valve in REMOTE position
Ref. Problem Ref. Possible Cause Remedy
7B 1. Internal Parts Not Moving Properly
Because of Extended Inactivity
If the regulator has been out of use over a long period of time, the seals may be preventing the regulator from returning to its original setting:
1. Place function valves on control manifold in center position
2. Adjust regulator from zero to full pressure several times. This action will establish a new seat and will also flush out any debris from the seal area
3. Replace control valves to previous positions 2. Seals Are Damaged or Washed out
or Debris in Seal Area
1. Place control valves in center position 2. Cycle manual adjustment from zero to full open
pressure several times
3. Observe for venting through inspection ports of reservoir
Produced By: Entrada International, Inc. 2002
Page 63 of 91
6.8 AIR REMOTE CONTROL PANEL PROBLEMSRef. Problem Ref. Possible Cause Remedy
8A Slow or No Function Operation 1. Low Air Supply Pressure to Panel Check Air Supply Pressure to Panel. Air supply pressure to panel should be at least 90 PSI for proper operation
2. Obstruction Preventing Movement of Handle on Hydraulic Control Valve on Manifold
Inspect and remove any articles which may have been inadvertently placed on the four-way control valves which prevent them from operating properly. 3. Faulty Actuator See Troubleshooting Section 5A 3 and 5A 4 4. Clogged Junction Box Separate junction box plates on both the Air Panel and
the Accumulator Unit. Clean ports and inspect junction box gasket. Stand clear of area and purge lines by operating valves from panel. Reconnect junction boxes
5. Damaged Air Cable Check entire length of air cable from the Air Panel to the Accumulator Unit for physical damage. Repair or replace as necessary
6. Leaking Control Valve or Connections
Check valves for leaks and repair as necessary. Check all tubing and air cable connections in Air Panel, junction boxes and air cylinders on Accumulator Unit
8B Valve Handles Hard to Move 1. No Lubricant in Air Lubricator Fill lubricator bowl with 10W oil. If condition persists, repair or replace valve
8C Transmitter Out Of Adjustment 1. Shock to remote gauge during shipment
1. The transmitter is a reliable but delicate instrument which is easily affected by rough treatment. To correct adjustment, reduce hydraulic pressure on the corresponding gauge to zero
2. Remove transmitter cover. Use a thin screwdriver to adjust valve setting until air receiver gauge on remote panel indicates zero pressure
3. Increase hydraulic pressure in system to 1000 PSI. Adjust receiver gauge on remote panel to corresponding setting
4. Increase hydraulic pressure by 1000 PSI increments until 3000 PSI maximum has been reached
5. Make adjustments to obtain corresponding pressure reading. Use manifold bleeder valve to reduce pressure in 500 PSI increments until pressure drops to zero
6. Make final adjustment to receiver gauge on remote panel
CAUTION:
DO NOT CHANGE SETTING OF AIR REGULATOR