User's Manual

Troubleshooting
3A2894F 55
Troubleshooting
1. Follow Pressure Relief Procedure, page 46, before checking or repairing a dispense valve.
2. Check all possible problems and causes before disassembling the dispense valve.
Mechanical and Electrical
PROBLEM CAUSE SOLUTION
Dispense Applicator
No flow of catalyst (B). Clogged gun nose. Clean or replace the gun nose.
Clogged injector housing (Ultra-lite
only).
Clean or replace the injector housing.
Clogged restrictor housing
Clean or replace the restrictor housing
and pin.
Ball valve is closed. Open the ball valve.
V/P is off. Ensure the power is on.
Ensure the machine is in dispense
mode.
Ensure V/P is turned on when machine
enters Purge/Prime mode.
No air to catalyst (B) pump. Turn air on.
No catalyst ram down pressure.
Ensure that there is pressure to the
catalyst ram and that the control lever
is in the down position.
Dosing valve leaking at rod. Loose or worn packings.
Tighten packing nut. If leak continues,
replace the packings.
Dosing valve between main
housing and outlet housing.
Bad o-ring. Replace both o-rings on the seat.
Dosing valve not cycling Bad cable. Replace the cable.
Bad power valve. Replace the power valve.
Dispense valve will not dispense
material.
Trigger lock engaged. Disengage the trigger lock.
No air to MD2. Connect air to the MD2.
Turn on the air.
Clogged mixer. Clean or replace Tri-core or Flex mixer.
Ultra-lite has cured material in it. Clean or replace.
Dispense valve will not stop
material dispense.
No air to MD2. Connect air to the MD2.
Turn on the air.
Bad seal in MD2.
Repair the MD2. Refer to the MD2 for
more details
Ultra-lite seal is worn Replace the seal.