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Transfer Pumps | Source of Supply in Polyurethanes Source of Supply in Polyurethanes
Source of Supply in Polyurethanes > Services > Troubleshooting > Transfer Pumps

Transfer Pumps

If you require any further help beyond what is provided on our website, please call our Service Department 1800 123 4567.

Graco T1 | Graco T2 | IPM IP-01 | IPM IP-02 | IPM OP-232C

hdr-gracot1

Documents
Instruction & Parts | Seal Repair Kit | Flyer

Common Questions / Problems

The pump is failing to operate.

  • Dirty or worn air motor; clean and service
  • Inadequate air supply or restricted lines; clean the lines or increase the air supply
  • Closed or clogged air valves; open or clear the valves
  • Clogged fluid hose or valve; clear the hoses and/or valves
  • Worn or damaged valves or seals; service

The pump is operating, but the output is low on both strokes

  • Clogged fluid hose or valve; clear the hose or valve
  • Exhausted fluid supply; refill the fluid supply and reprime the pump
  • Worn or damaged valves or seals; service

The pump is operating, but the output is low on the downstroke

  • Held open or worn intake valve; either clear or service the valve
  • Worn or damaged valves or seals; service

The pump is operating, but the output is low on the upstroke

  • Held open or worn piston valve; either clear or service the valve
  • Worn or damaged valves or seals; service

Erractic or accelerated operation

  • Exhausted fluid supply; refill the fluid supply and reprime the pump
  • Broken air motor compression spring; replace

Pump slowly moves after shutoff in downstroke

  • Clogged or dirty intake valve check ball; clean the ball and seat
  • Worn or damaged valves or seals; install a repair kit

Pump slowly moves after shutoff in upstroke

  • Clogged or dirty intake valve check ball; clean the ball and seat
  • Worn or damaged valves or seals; install a repair kit

Graco T1 | Graco T2 | IPM IP-01 | IPM IP-02 | IPM OP-232C

hdr-gracot2Documents
Instruction & Parts | Seal Repair Kit | Flyer

The pump is failing to operate.

  • Dirty or worn air motor; clean and service
  • Inadequate air supply or restricted lines; clean the lines or increase the air supply
  • Closed or clogged air valves; open or clear the valves
  • Clogged fluid hose or valve; clear the hoses and/or valves
  • Worn or damaged valves or seals; service

The pump is operating, but the output is low on both strokes

  • Clogged fluid hose or valve; clear the hose or valve
  • Exhausted fluid supply; refill the fluid supply and reprime the pump
  • Worn or damaged valves or seals; service

The pump is operating, but the output is low on the downstroke

  • Held open or worn intake valve; either clear or service the valve
  • Worn or damaged valves or seals; service

The pump is operating, but the output is low on the upstroke

  • Held open or worn piston valve; either clear or service the valve
  • Worn or damaged valves or seals; service

Erractic or accelerated operation

  • Exhausted fluid supply; refill the fluid supply and reprime the pump
  • Broken air motor compression spring; replace

Pump slowly moves after shutoff in downstroke

  • Clogged or dirty intake valve check ball; clean the ball and seat
  • Worn or damaged valves or seals; install a repair kit

Pump slowly moves after shutoff in upstroke

  • Clogged or dirty intake valve check ball; clean the ball and seat
  • Worn or damaged valves or seals; install a repair kit

Graco T1 | Graco T2 | IPM IP-01 | IPM IP-02 | IPM OP-232C

hdr-ipm-ip01Documents
Service & Repairs

Pump does not move

  • Air motor stalled; close the needle valve and bleed down air pressure to the motor, if possible move the piston rod manaully a short distance and then close the bleed valve and slowly open the air needle valve to the air motor
  • Springs are damaged; replace
  • Low air supply; increase air supply with air regulator/open air needle valve/close bleed valve
  • Fluid outlet is blocked; check downstream hoses or check for closed valves

Air leaks along piston shaft

  • Worn packing; replace

Air leaks from piston shaft holes

  • Contamination by debris in air motor piston; check and service

Slow air motor operations

  • Icing of the air motor; allow the build-up to thaw
  • Clogged muffler; clean or replace

Low output on both strokes

  • Restricted hose access; clean, clear or replace
  • Bad fluid seals foot valve or piston cup; replace

Low output on the upstroke

  • Bad or damaged piston cup; replace

Low output on the downstroke

  • Bad or damaged foot valve or ball; replace

Leaking fluid through packing at the air motor

  • Packings damaged or not seated properly; replace or set the packings
  • Packing nut too loose; tightening down the nut
  • Scored or scratched displacement rod; replace

Abnormal or rapid operation

  • Low or no fluid supply; replenish fluid supply and reprime the cup
  • Broken spring in air motor; replace

Jerky movement of the pump

  • Packing nut too tight; stop the pump operation, relieve fluid with the drain valve and loosen packing then re-tightening it

Graco T1 | Graco T2 | IPM IP-01 | IPM IP-02 | IPM OP-232C

hdr-ipm-ip02Documents
Service & Repairs

Pump does not operate

  • Air supply or pressure is inadequate or the air lines are restricted; increase air pressure and check for any restrictions in the air line
  • Dispensing valve is not open or it is clogged; open and/or clear valve
  • Clogged fluid lines, valves, hoses, etc; follow the pressure relief procedure to clear obstruction
  • Damaged air motor; service the air motor
  • Depleted or exhausted fluid supply; refill fluid and prime the system or flush it

Non-stop air exhaust

  • Worn or damaged air motor, gasket, packing, seal, etc; service the air motor

Erratic pump operation

  • Intake valve or packings are worn; refill the fluid and prime the system
  • Intake valve is not completely closed; clear the obstruction and service the pump

Low output on the upstroke

  • Clogged or worn piston valve; clear the obstruction and service

Low output on the downstroke

  • Clogged or worn intake valve; clear the obstruction and service

Low output on both strokes

  • Restriction in air lines or pressure is too low; increase the air pressure or supply
  • Closed or clogged valves; open or clear the valve
  • Fluid supply is insufficient or exhausted; refill fluid and prime the system
  • Obstructions in fluid lines, hoses, valves, etc; follow the relief procedure to clear the obstruction

Graco T1 | Graco T2 | IPM IP-01 | IPM IP-02 | IPM OP-232C

hdr-ipm-0p232cDocuments
Service & Repairs

Pump does not operate

  • Air supply or pressure is inadequate or the air lines are restricted; increase air pressure and check for any restrictions in the air line
  • Dispensing valve is not open or it is clogged; open and/or clear valve
  • Clogged fluid lines, valves, hoses, etc; follow the pressure relief procedure to clear obstruction
  • Damaged air motor; service the air motor
  • Depleted or exhausted fluid supply; refill fluid and prime the system or flush it

Non-stop air exhaust

  • Worn or damaged air motor, gasket, packing, seal, etc; service the air motor

Erratic pump operation

  • Intake valve or packings are worn; refill the fluid and prime the system
  • Intake valve is not completely closed; clear the obstruction and service the pump

Low output on the upstroke

  • Clogged or worn piston valve; clear the obstruction and service

Low output on the downstroke

  • Clogged or worn intake valve; clear the obstruction and service

Low output on both strokes

  • Restriction in air lines or pressure is too low; increase the air pressure or supply
  • Closed or clogged valves; open or clear the valve
  • Fluid supply is insufficient or exhausted; refill fluid and prime the system
  • Obstructions in fluid lines, hoses, valves, etc; follow the relief procedure to clear the obstruction