Product Manual

10
Buffalo Series • Rev. 2/4/2016
5. Burner operation
Be sure water is flowing through water heater coil before turning on burner switch. Turn
thermostat to desired temperature. Burner will ignite and remain in operation as long as there is
sufficient water flow to satisfy pressure switch and outlet temperature is below the thermostat set
point.
IF YOU EXPERIENCE IGNITION FAILURE, DO NOT ATTEMPT TO RESTART
BURNER! EXCESS FUEL AND VAPORS MAY HAVE ACCUMULATED, AND THE
CHAMBER MAY BE HOT. THE UNIT MUST COOL DOWN BEFORE RESTART CAN
BE ATTEMPTED.
Warning: Condensation on Coil
When cold water is being pumped through heater coil, and burner is firing, condensation may
form at times on coil and drip down into the burner compartment. This can be particularly
noticeable on cold, humid days giving the false appearance of a leaking coil. A leaking coil or
system will be evident if the pump keeps cycling with the wand off. Pump head pressure should
read ‘0’.
WARNING: All electrically powered units must be provided with suitable overload and
overcurrent protection in accordance with the Canadian Electrical Code part 1. Confirm
the GFCI (Ground Fault Circuit Interrupter) is in good working order (press the test
button and reset).
6. Pressure adjustment - The pressure regulator (unloader) is located on pump (see pump
assembly diagram). It controls pressure being generated by the pressure washer. This
regulator may be adjusted to desired pressure by turning the adjustment knob. Turning the
adjustment knob clockwise will increase the pressure. NEVER OPERATE SYSTEM AT A
HIGHER PSI THAN THE MAXIMUM RATING. This machine has been adjusted to operate
at a specific maximum pressure as per machine specifications. Pressure may be reduced for
lighter use by turning the Pressure Regulator/Unloader counter clockwise. If continuing to turn
the unloader clockwise does not increase the pressure, then this implies the maximum has been
reached for the system. Any further turning of the unloader will cause the pressure to spike when
the wand trigger is released, resulting in possible damage to the machine. To avoid this effect,
loosen the unloader (counter-clockwise) until the pressure just starts to drop (see pump head
pressure gauge) and until it no longer exceeds the maximum pressure rating for the machine.
7. You are now ready to start the cleaning operation - Pull trigger on pressure wand assembly
to start cleaning. To stop the pressurized water, release the trigger. DO NOT LEAVE UNIT
RUNNING WHEN NOT IN USE.
8. To stop Operation – turn BURNER switch to ‘OFF’. Allow motor to continue running. Pull
gun trigger to allow water to run through coil for approximately 2 minutes prior to completely
shutting off system. This process will allow coil to cool down. After the cooling period is
complete, turn off motor and pump by turning PUMP switch to ‘OFF’. Squeeze and release
trigger for the second time in order to relieve pump system of pressure.