Landa 2HOT Series, Руководство по обслуживанию, Страница: 5 / 28

Service Manual Landa 2HOT • 9.808-354.0
5
PRESSURE W
ASHER T
roubleshooting Guide
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
LOW OPERATING
PRESSURE
Faulty pressure gauge Test with 2nd gauge. If bad, install new
Gauge.
Insufficient
water supply
Use larger garden hose;
clean filter washer at water inlet.
Old, worn or incorrect
spray nozzle
Match nozzle number to machine
and/or replace with new nozzle.
Plumbing
or hose leak
Check plumbing system for leaks.
Re-tape leaks with thread sealant or teflon
tape
Faulty or mis-adjusted
unloader valve (Where applicable)
Adjust unloader for proper pressure. In-
stall repair kit when needed. Test PSI with
unloader removed, taking pressure directly
off the pump.
Worn packing in pump Install new packing kit.
Fouled or dirty inlet
or discharge valves in pump
Clean inlet and
discharge valves.
Worn inlet or discharge valves Replace with valve kit.
Obstruction in spray nozzle Remove obstruction.
Low power supply Check voltage of building and compare with
requirements. Obtain a different power
source.
BURNER LIGHT
WILL NOT LIGHT
Little or no fuel Fill tank with fuel.
Improper fuel or water in fuel Drain fuel tank and fill with proper fuel.
Plugged fuel filter Replace as needed.
Misadjusted burner air bands Readjust air bands for clean burn.
Little or no fuel pressure from fuel
pump
Increase fuel pressure to specifications and/
or replace fuel pump.
Faulty burner transformer Test transformer for proper arc between con-
tacts. Replace as needed.
Disconnected or short in electrical
wiring
All wire contacts should be clean and tight.
No breaks in wire.
Burner motor thermal protector
tripped
If tripped, check voltage, connections, and
extensions for cause. Check fuel pump shaft
rotation for binding causing motor to over-
heat.
Flex-coupling slipping on fuel pump
shaft or burner motor shaft
Replace if needed.
ON-OFF Switch defective Check continuity through burner switch.
Heavy sooting on coil and burner,
can cause interruption of air flow and
shorting of electrodes
Clean as required.
Improper electrode setting Clean and test according to diagram in Op-
erators Manual.