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Page 5-2
Revised 4/07
ITW Dynatec c. 2002
MR1300 APPLICATOR w. INTEGRATED FILTER Manual #40-43
Problem
Possible Cause
Solution
Hot melt is coming out
of the module’s “weep”
holes
1. Module seals are damaged.
1. Replace seal cartridge or module,
see instructions in this chapter.
Applicator does not
reach operating
temperature
1. Hopper temperature setpoint is too low.
1. Change setpoint, see ASU manual.
2. Inoperative heater
cartridge.
2. Check/ replace heater cartridge, see
instructions in this chapter.
3. Inoperative temperature
sensor.
3. Check/ replace sensor, see instructions in this chapter.
1. Applicator temperature
setpoint is too high.
1. Change setpoint, see ASU manual.
2. Inoperative temperature
sensor.
2. Check/ replace sensor, see instructions in this chapter.
1. Inoperative piston o-ring.
1. Replace o-ring, see instructions in
this chapter.
2. O-rings located between
module and service block
are inoperative.
2. Remove module from block (see
instructions in this chapter: “Replacement of Module”) and replace
o-rings.
1. Adhesive pressure is too
low.
1. a. For units without speed control:
increase adhesive pressure at ASU.
Applicator is too hot
Air escapes from
module
Application pattern is
erratic
b. For units with speed control (tach
follower): adjust pump speed control.
2. Adjust pattern controller.
2. See pattern controller manual for
proper adjustment.