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Model 30000-S DHPU Manual 

Rev. 0 

JRK 

17SEP12 

Page 22 

 

 

Table 1: Troubleshooting the Power Unit Engine 

Problem 

Solution 

Engine will not start 

1) Compress the spring on the starter to the cold engine 

position.  Attempt to start up to 3 to 5 times. 
2) Check the fan belt.  Replace the belt if broken. 

3) Ensure the manual shutdown pull handle is not stuck 

in the out position.  Reset by pushing in if required. 

4)  Verify  the  diesel  tank  is  not  empty.    If  the  unit  was 

allowed to run dry, then vent air out of the fuel lines per 
the engine manual. 

5)  Make  sure  the  fuel  filter  is  not  clogged.    Replace  the 

filter if blocked by debris, and vent the fuel system. 
6)  Inspect  the  fuel  pump  strainer  for  blockage.    If  dirty, 
then wash per the engine manual then replace.  Vent the 

air out of the fuel system. 

7) Ensure the correct grade of diesel fuel is utilized. 

8)  Add  fuel  additives,  per  the  engine  manual,  if  the 
operating temp is below the start limit temperature. 

9)  Inspect  the  fuel  lines  and  fittings  for  leaks  or  entry 

points  for  air  to  enter the  system.    Vent the  fuel  system 

after addressing the problem. 
10) Inspect and replace the fuel injector if it is defective. 

11)  Verify  the  engine  inlet-outlet  valve  clearance  is  per 

the engine manual's recommendation.  Adjust if required. 

12) Verify the correct motor oil is being used especially in 

low  temperature  environments.    Refer  to  the  engine 
manual for further guidance. 

13) Check the compression of the diesel engine.  Service 

engine if required. 

14) Verify the trip lever on the Sentinel valve is reset. 

Engine stalls or sputters/runs 

unevenly 

1) Ensure the correct grade of diesel fuel is utilized. 

2)  Inspect  the  fuel  lines  and  fittings  for  leaks  or  entry 

points  for  air  to  enter the  system.    Vent the  fuel  system 
after addressing the problem. 

3) Inspect and replace the fuel injector if it is defective. 

4)  Make  sure  the  fuel  filter  is  not  clogged.    Replace  the 

filter if blocked by debris, and vent the fuel system. 

5)  Inspect  the  fuel  pump  strainer  for  blockage.    If  dirty, 
then wash per the engine manual then replace.  Vent the 

air out of the fuel system. 

6) Verify the engine inlet-outlet valve clearance is per the 

engine manual's recommendation.  Adjust if required. 

Engine speed does not return 

to idle after operation 

1) Lower the set point of the hydro-throttle. 

2)  Verify  hydro-throttle  spring  is  functioning  properly.  

Replace if damaged. 
3)  Ensure  the  spring  on  the  engine  throttle  is  returning 

the lever to idle.  Replace if damaged. 

Содержание WELLKIN 30000-S HDPU

Страница 1: ...Tubing Tong Diesel Hydraulic Power Unit Installation Operation Service and Parts Book Manual WPI WELLKIN Inc 8401 Industrial Dr Pearland TX 77584 PH 281 992 2064 FX 281 992 2076 E mail sales wpiwellk...

Страница 2: ...tative or employee to witness and accept the material is the expense of the Buyer All costs associated with preparation crating insurance and ocean freight of the goods to the final destination to be...

Страница 3: ...ereunder require in connection with the installation thereof the services of a contractor engaged by WPI WELLKIN or a supervisor engineer or other employee connected with or employed by WPI WELLKIN an...

Страница 4: ...ion 11 Figure 5 Quick Disconnects and Ball Valves Location 12 Figure 6 Control Panel 13 Figure 7 Hydro Throttle 14 Figure 8 Spring Starter 15 Figure 9 Engine Exhaust Components and Over Speed Shutdown...

Страница 5: ...er unit above the rated design pressure or engine speed Always check the pressure setting of the power unit before operating to prevent equipment damage Never add remove or convert equipment on the po...

Страница 6: ...tion o Safety boots with steel toe o Safety gloves o Ear protection o Coverall Never use excessive force when coupling the wing style quick disconnects to the system Never disconnect any hose on the p...

Страница 7: ...r Shutdowns for low oil pressure high oil temperature and fan belt break 30 gallon diesel reservoir with level gauge drain port and filler breather Hydraulic throttle System relief valve set at 3000 P...

Страница 8: ...ifted a sling with four legs is required and the sling must at a minimum be rated for the gross weight of the power unit The lifting equipment should also be inspected to ensure it is in adequate cond...

Страница 9: ...ection should be worn by all personnel near the unit The diesel power unit incorporates several safety devices However this combustion engine driven power unit is neither designed nor certified as an...

Страница 10: ...should be used Refer to the engine manual for details on summer or winter grades of diesel fuel When filling the tank do not spill any fuel and avoid letting contaminants enter the tank The following...

Страница 11: ...through the filler breather until the level reaches the top of the level gauge When the filler breather cap is removed take care to avoid the passage of contaminants into the hydraulic reservoir A pr...

Страница 12: ...nt must be met before the integral check valve in the connector is forced to open The following photo shows the location of the pressure and return quick disconnects Figure 5 Quick Disconnects and Bal...

Страница 13: ...so be placed in standby mode when long breaks are expected in operation Oil still flows through the heat exchanger but the unit will generate less heat because flow is at zero pressure instead of the...

Страница 14: ...he internal piston will extend thereby increasing the motor speed The cylinder is pushed back by the spring when the pressure drops back down below the set point putting the engine into an idle mode t...

Страница 15: ...ndby work ball valve to the work position Figure 8 Spring Starter Observe the engine speed oil temperature and oil pressure gauges The engine speed will be approximately 1400 RPM when the unit is in i...

Страница 16: ...arrestor Also ensure the mounting clamp is securely tightened The spark arrestor and exhaust are wrapped with a thermal blanket to help prevent the operator from accidentally touching the unit during...

Страница 17: ...the manual System Relief Valve The system hydraulic pressure relief valve RV 1 on the hydraulic schematic is shown in the following photo This valve limits the maximum pressure from the power unit hyd...

Страница 18: ...dge stem To adjust the valve setting loosen the jam nut on the cartridge valve stem Turn the screw clockwise to increase the pressure setting and counter clockwise to reduce the setting Lock the jam n...

Страница 19: ...oned in the system s safety feature section Heat Exchanger and Heat Exchanger Hydraulic Pump The unit incorporates an air over oil heat exchanger HX 1 driven by a hydraulic motor The heat exchanger al...

Страница 20: ...Return Filter Before fluid reenters the reservoir it passes through the return filter FL 1 Figure 13 Suction Strainer and Return Filter Shutdown The proper way to stop the engine is to rotate the shut...

Страница 21: ...into the storage basket on the lift frame Move the power unit to its storage location Clean and remove all debris from the power unit Afterwards inspect the unit for any damage Address all problems id...

Страница 22: ...f it is defective 11 Verify the engine inlet outlet valve clearance is per the engine manual s recommendation Adjust if required 12 Verify the correct motor oil is being used especially in low tempera...

Страница 23: ...n if too high 2 Inspect the engine air filter for debris Clean or replace if clogged 3 Ensure the engine fan blade is turning Inspect the tension in and condition of the fan belt Replace if the belt i...

Страница 24: ...ects are completely tightened and engaged b Inspect the return filter pressure gauge Replace the filter elements if required c Ensure the hoses are adequate for the power unit flow 1 for pressure 1 1...

Страница 25: ...d by any of the following a Verify the quick disconnects are completely tightened and engaged b Inspect the return filter pressure gauge Replace the filter elements if required c Ensure the hoses are...

Страница 26: ...nctions properly 10 Drain water accumulation from the bottom of the reservoir after settled Each 500 Hour Interval 1 Inspect the fan belt for damage Replace if worn 2 Replace the hydraulic return filt...

Страница 27: ...LG 1 Level gauge for hydraulic tank 30131 FB 1 Filler breather cap for hydraulic tank 80012 FF 2 Engine fuel filter 80012 OF 2 Engine oil filter 80012 FB 1 Engine fan belt 80002 1 Engine to pump shaf...

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