Rosco 1700 - Troubleshooting Guide

Model 1700 Page 22 12/07
ROSCO MODEL 1700 TROUBLESHOOTING GUIDE
SYMPTOM
Machine does not fog
when READY light is on
and fog button is pressed
Machine pumps but has
no output (No smoke)
Machine pumps but has
low output (Reduced
output)
Fog is wet and leaves a
trail of fluid in front of
the machine
Machine spits hot fluid
Thermal trip cuts out
PROBLEM
Broken fog switch on
remote
Defective Remote PCB
Break in remote cable
Loose wire on remote
header on PCB
Faulty pump
Component failure on
main PCB
No fluid in bottle
Fluid tube into machine is
blocked or kinked
Pump or fitting on pump
is leaking air into the
system
Blocked heat exchanger
Fitting on output side of
pump leaking
Metal tubing on input side
of block leaking
Heater block beginning to
block
Temperature of machine
set too low
Wrong fluid in machine
Pump speed set too high
Temperature of machine
set too high
Main PCB faulty
Thermocouple faulty
Heater block over
temperature
Thermocouple dead short
SOLUTION
Replace fog switch
Replace remote PCB
Replace remote cable
Recrimp wire into header
Replace pump
Test or replace PCB
Fill bottle with fluid
Replace fluid tube
Reseal or replace fittings
Replace heat exchanger
(Check that only Rosco
fluid is being used)
Reseal or replace fitting
Replace heat exchanger
Flush block with de-
ionized or distilled water
Re-calibrate main PCB
(see page 22)
Ensure only Rosco fluid
is being used
Recalibrate pump speed
(see page 22)
Re-calibrate main PCB
Replace main PCB
Replace thermocouple
Replace Main PCB
Replace thermocouple