Periodic Maintenance: RMP-424

Daily Maintenance

• Clean and lubricate exposed pump rods.
  1. Remove and clean any material residue or film with compatible solvent (damp pad only - do not pour solvent)
  2. Lubricate with compatible lubricants. (Material film on shaft is normal)
• Check air supply for clean air.
• Ratio Check Test
  1. Remove the retainer cap or mixer nozzle.
  2. Trigger applicator; two separate beads of material will appear; compare for correct volume.
• Seal/Pump Check Test
  1. Turn air pressure regulator down all the way
  2. Place a waste container or drop cloth under the purge valve (ball valve below gauge) and open the valve opposite the pump to be checked. EXAMPLE: to check "A" open "B".
  3. Disconnect the air line, (black or clear 5/32" tube) coming from the unidirectional (gray) valve, at the tube fitting on the 4-way valve the tube connects to. Plug or pinch off the tube. This will prevent the automatic dispense valve from opening.
  4. Trigger or actuate the unit and slowly turn the pressure up until rods move forward and stall against pressure (pressure gauge on "A" side should read 300-500 psi; "B" gauge should read "0" psi). If it stalls and pressure registers, the pressure seal is good. If the system does not stall, and it takes a long cycle or an additional cycle, there is either air trapped in the pressure tube, the pressure seal is bad, or material is not being supplied.
  5. Release signal; cylinder will move back and pressure should hold on gauge. If pressure drops, outlet check valve is failing. Clean or replace.
  6. Repeat sequence on other side closing "B" and opening "A" valve. This will check other side.