34
Troubleshooting
(continued)
4. Operating pressure excessive < 1250 PSI
Possible Cause
Solution
4a. Restricted discharge nozzle or plumbing
4a. Clean/Replace nozzles or components
4b. Pressure relief valve set to high, or PTO speed too high
4b. Reduce pressure setting, reduce PTO speed
4c. Restriction in coil
4c. See “Descaling Instructions”
4d. Insufficient number of valve trip sections activated
4d. Ensure that a minimum of 3 valve trip sections are up
5. Heaters will not run motor, igniter, or pump fuel
Possible Cause
Solution
5a. Rear controller not connected
5a. Connect control, ensure harness is connected to each
heater. Verify internal wiring connections are good inside
heater housing.
5b. Arm Switch and Arm Override are both deactivated
5b. Active by lowering to operation position or activating
Arm Override on cab control
5c. No flow of fluid being directed through heaters. Pump is not
running or fluid is being bypassed in pump.
5c. Turn on PTO and either lower to operational position
or activate Arm override to direct fluid through the heaters
5d. No flow meter reading, No target temperature
5d. Ensure flow meter reading is being read by controller.
0 GPM flow indicated a) pump not on-turn pump on b)fluid
bypassing in pump-lower reel or activate Arm override
c)faulty/damaged flow meter-replace d)no target temp-set
temp to 240F
6. Burner motor runs, but burner will not ignite.
Possible Cause
Solution
6a. Fuel tank empty.
6a. Add diesel to fuel tank.
6b. Fuel pump air-locked -- pump lost prime
when fuel tank ran dry, changed fuel pumps
and did not install fuel bypass plug in pump.
6b. Secure a small container to catch fuel flow and get heater to turn on.
Open prime valve on fuel pump and allow to run until steady stream of fuel
flows from prime valve, catching it in the container. Turn the heater to the
“OFF” position, close prime valve and resume operation. NOTE: Always
install bypass plug in fuel pump when installing a new pump, or you will have
to prime each time the tank runs dry.
6c. The fuel filter or fuel line fitting is plugged --
considerable air leak in inlet line or fitting.
6c. Check for or consider need for change of fuel filter -- check for fuel flow
through outlet fitting on bottom of fuel tank. Sludge build-up over time can
plug the fitting -- check inlet line, fittings and clamps for security and possible
air leaks. If pump fails to prime after above replace fuel pump.
6d. Motor blowing spark away from fuel nozzle
6d. Adjust air settings on heater as need
6e. Igniter damaged, or in contact with nozzle
6e. Reference Beckett manual to troubleshoot igniter damage. Ensure
igniter is not shorted to nozzle, as will result in no spark
Summary of Contents for 720 Dew Simulator
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Page 7: ...7 Safety Decal Locations...
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