Welcome to SIP UK

Troubleshooting Guide

Need  a little help to identify the problem with your machine and determine the best solution for repair to get your machine to full working order? These following troubleshooting guides will ensure you can get back to work quickly with minimal fuss.

SIP belt drive compressorsCompressors


Direct Drive Compressors

Fault

Troubleshooting

Solution

Compressor completely dead

 

  1. Faulty / blown Fuse.
  2. Motor overload has popped out.

 

    1. Replace fuse.
    2. Put motor overload back in its place.
    3. Reset if necessary.

 

Motor buzzing

  1. Possible start capacitor fault.
  1.  Replace capacitor.

Motor overload tripping

  1. Check if compressor is running from an extension lead.
  1. Extension lead will cause a voltage drop, increasing the amperage – resulting in the motor overload tripping. Use from mains plug.

Venting air from pressure switch

  1. Check 1/2” coupler fitted (not always fitted from new).
  2. If fitted could be fault with pastille inside the NRV.
  3. If pastille is ok check NRV and / or pressure switch.
  1. Compressor will vent under the pressure switch until the tank pressure increases above 1 bar.
  2. If cracked or disintegrated replace pastille / NRV.
  3. Replace NRV / pressure switch.

Not building up to pressure

  1. Air leaking.
  2. If no leaks – head gasket possibly blown.
  1. Check for air leaks i.e delivery pipe, pressure switch, NRV, drain valve & regulator.
  2. Replace head gasket and check condition of valve plate (non warranty).

Safety valve activating

  1. What pressure is the safety valve activating at?
  1.  If below the pressure the compressor is rated then replace safety valve.
  2. If activating above the pressure the compressor is rated then there is a faulty pressure switch – may need replacing.


Belt Drive Compressors


Fault

Troubleshooting

Solution

Compressor completely dead

 

1. Faulty / blown Fuse.
2. Motor overload has popped out.

 

  1. Replace fuse.
  2. Put motor overload back in its place.
  3. Reset if necessary.

Motor buzzing

  1. Possible start capacitor fault.
  1.  Replace capacitor.

Motor overload tripping

  1. Check if compressor is running from an extension lead.
  1. Extension lead will cause a voltage drop, increasing the amperage – resulting in the motor overload tripping. Use from mains plug.

Venting air from pressure switch

  1. Check 1/2” coupler fitted (not always fitted from new).
  2. If fitted could be fault with pastille inside the NRV.
  3. If pastille is ok check NRV and / or pressure switch.
  1. Compressor will vent under the pressure switch until the tank pressure increases above 1 bar.
  2. If cracked or disintegrated replace pastille / NRV.
  3. Replace NRV / pressure switch.

Squeaking belt

  1. Check belt is in place / in good condition.
  1.  Adjust / replace belt please refer to owner’s manual

Not building up to pressure

  1. Air leaking.
  2. If no leaks – head gasket possibly blown.
  1.  Check for air leaks i.e delivery pipe, pressure switch, NRV, drain valve & regulator.
  2. Replace head gasket and check condition of valve plate (non warranty).

Safety valve activating

  1. Check the pressure the safety valve activating at.
  1. If below the pressure the compressor is rated then replace safety valve.
  2. If activating above the pressure the compressor is rated then there is a faulty pressure switch – may need replacing.

SIP weldersWelding

Mig Welders

Fault

Troubleshooting

Solution

No power

  1. Fuse in plug blown.
  1. Check supply & replace fuse.

No wire speed

  1. Check voltage selector switch.
  2. PCB or torch fault.
  1. Ensure not set to “0” as will not work on this setting.
  2. Check trigger & connections in torch.

Welding wire snagging

  1. Check roller and tip in torch are correct size for welding wire used.
  2. Possible liner fault.
  1. Replace with correct size if wrong. (non warranty).
  • Replace liner (non warranty).
 

Thermal cut off

  1. How long has the machine been used with particular air tool?
  2. Activated when torch is pressed from cold.
  1. May have exceeded duty cycle – check specification of machine.
  2. Machine needs inspecting.
 

ARC welders

Fault

Troubleshooting

Solution

No power

  1. Check correct power supply being used

 

Will not strike an ARC

  1. Check lead set up correctly.
  2. Possible torch or transformer problem.
  1. Machine will need to be inspected – torch carries a 3 month warranty only cold need replacing.
 

No wire speed

  • Check voltage selector switch.
  1. PCB or torch fault.
  1. Ensure not set to “0” as will not work on this setting.
  2. Check trigger & connections in torch.

No gas flow

  1. Check wire feed motor is working.
  1. If working gas valve or PCB is faulty.
 

Gas flow but no wire speed

  1. PCB or motor fault.
  1. Replace parts / have machine inspected.
 

Welding wire snagging

  1. Check roller and tip in torch are correct size for welding wire used.
  2. Possible liner fault.
  1. Replace with correct size if wrong. (non warranty).
  2. Replace liner (non warranty).
 

Thermal cut off

  1. How long has the machine been used with particular air tool?
  2. Activated when torch is pressed from cold.
  1. May have exceeded duty cycle – check specification of machine.
  2. Machine needs inspecting.

Plasma cutters

Fault

Troubleshooting

Solution

No power

  1. Check power supply is correct.

 

No air flow

  1. Check suitable compressor is being used.
  2. Check regulator set to correct pressure.
  3. Possible gas valve fault.
  1. Upgrade to correct compressor for usage.
  2. Set regulator to correct pressure.
  3. Replace gas valve.
 

Will not strike an ARC / no air flow

  1. Check ceramic shield is fully tightened – if there is no contact to the pins on the head of the torch the plasma will be completely dead.
  2. Check ceramic shield not damaged or cracked.
  1. Tighten ceramic shield.
  2. Replace ceramic shield.
 

Will not strike an ARC / with air flow

  1. Check HF is produced (you will hear a buzzing found from machine).
  1. Machine needs to be inspected.
 

Several ARC’s coming from the nozzle

 

  1. Change nozzle (non warranty).

SIP transmission jacksHydraulics

Trolley Jacks

Fault

Troubleshooting

Solution

Will not lift

  1. Check capability of jack and weight of vehicle lifting.
  1. Vehicle could be too heavy for jack.
 

Jack is creeping down

  1. Possible defective seal. 
  1. Replace seal.
  2. Do not leave the jack holding vehicle weight for long periods of time, support weight with axle stands.

Leaking oil

  1. Check rubber bung is fitted.
  2. Faulty seal.
  1. Insert rubber bung.
  2. Replace seal / send back for warranty inspection subject to warranty terms.
 

Adding hydraulic oil.

Remove rubber bung from the ram then top up with oil to the required level. Fully pump the handle (or foot pedal) to purge all air from the ram – this has to be done until a small amount of oil comes out of the filling hole, replace bung and use as normal.

Transmission Jacks

Fault

Troubleshooting

Solution

Will not lift

  1. Check capability of jack and weight of vehicle lifting.
  1. Vehicle could be too heavy for jack.
  2.  

Jack is creeping down

  1. Check relief valve is fully closed.
  1. Do not leave the jack holding vehicle weight for long periods of time, support weight with axle stands.
 

Leaking oil

  1. Check rubber bung is fitted.
  2. Faulty seal.
  1. Insert rubber bung.
  2. Replace seal / send back for warranty inspection subject to warranty terms.
 

 The release valve should not be turned too far when lowering the jack as it may completely undo and the small ball bearing behind could fall out casing issues with the jack retaining pressure.

 **Please note routine maintenance should be carried out on all machinery; please refer to your owner’s manual for information on maintenance.