Operation Instructions - Hotsy 680SS Operating Instructions And Parts Manual

Burner Air Adjustment
The oil burner on this machine is preset for operation at
altitudes near 1700 feet. If operated at higher altitudes,
it may be necessary to adjust the air band for a #1 or #2
smoke spot on the Bacharach scale.
To adjust, Loosen locking screw found on the air band.
Start machine and turn burner ON and close air band
until black smoke appears from burner exhaust vent.
Note air band position. Next, slowly open the air band
until white smoke just starts to appear and note air band
position, again. Rotate the air band halfway between to the
previously noted positions. Tighten locking screws. Typical
distance from the 'black smoke' position is roughly 3/8"-1/2"
more open from the point of visible black smoke, but may
vary based upon local operating conditions.
• For higher altitudes, the air band opening may
need to be increased; for lower altitude, the air band may
need to be decreased.
• For higher humidity, the air band opening may
need to be increased; for lower relative humidity, the air
band may need to be decreased.
• For higher ambient temperatures the air band
opening may need to be increased; for lower ambient
temperatures, the air band opening may need to be
decreased.
Adjust the burner to your operating location's environment
as-needed for best smoke spot and performance compliant
with local, state, and federal regulations.
Example: a unit preset at a factory at 1700 feet altitude
with an air band of 1.1" and fuel pressure of 190 PSI with
Ambient temperature of 72 °F and a relative humidity
of 84% using #2 Diesel fuel oil. The unit is shipped to a
location at 5300 feet altitude with ambient air temperature
of 59 °F and a relative humidity of 25%. The air band
required adjustment to 1.8" opening and fuel pressure
lowered to 150 PSI for a high altitude adjustment for both
heat input adjustments and combustion air intake with the
same fuel type.
Before Starting
WARNING: Check hoses, trigger guns, fittings, and
fuel connections daily for signs of wear, cracks and
looseness, and replace as required.
1. Connect water supply hose to the standard garden
hose connector. The water faucet and supply hose
must be capable of providing 3.0 GPM at 20 to 80 PSI.
2. Fill fuel tank. Use kerosene, #1 grade home heating
oil, #1 or #2 diesel fuel. DO NOT USE GASOLINE.
3. Check pump oil level.
4. If detergents are to be used, only use detergents
intended for pressure washers. Follow instructions on
the detergent container.
10

OPERATION INSTRUCTIONS

HOTSY 680SS • 8.914-368.0
Electrical Connections
WARNING: Make sure all switches and controls are
in the OFF position prior to plugging in.
CAUTION: This cleaner is equipped with a UL
approved ground fault circuit interrupter (GFCI)
power cord. Use UL grounded type receptacles
of proper voltage and amperage ratings. Where a
properly grounded receptacle is not available, it is
the personal responsibility of the owner to have one
installed. Always disconnect power before servicing
your cleaner.
Connect electrical cord and test the GFCI using the reset
and test procedures conveniently located on the GFCI
device. The GFCI must be reset and tested with every
use. Do not use machine if the GFCI device fails test.
To Start
IMPORTANT: The water must be turned on before
starting. Running the pump dry will cause damage
and void warranty.
IMPORTANT: Do not allow the machine to run in
bypass for more than 10 minutes at any one time or
damage to pump may occur.
1. Turn water on.
2. Hold trigger gun firmly, squeeze trigger and turn pump
switch ON. Allow air to purge from system.
3. If HOT water is desired, turn burner switch ON.
Adjust thermostat to desired temperature. The burner
will fire immediately with a small puff of smoke. If
smoke continues refer to the Troubleshooting Guide
in this manual. When the trigger gun is closed or
temperature setting is reached, the burner will auto-
matically turn off.
To Stop
1. If detergents were used, draw clear water through the
detergent line to purge detergent.
2. If burner was used, turn off burner switch and allow
pump to run cold water through coil.
3. Turn OFF pump switch.
4. Turn OFF water supply.
5. Squeeze trigger gun open to relieve system pressure.
NOTE: If the machine is unplugged from receptacle,
you must reset the GFCI power cord when machine
is plugged in. Always test GFCI before each use. See
instructions in the Electrical Connections section of
this manual.