8 SYSTEM INFORMATION
POWER SYSTEM:
ELECTRIC MOTORS: All electric motors contain a
manual or automatic thermal overload
which will shut down the motor if it
overheats. If the overload or starter
shuts down the motor, have an electri-
cian or an authorized Hydro Tek
distributor check for electrical prob-
lems. The motor can be reset by depressing the red
overload button located on either the motor or the
starter, (as shown above). The automatic overload will
reset itself after the motor has cooled.
Never spray water on the unit, or damage to the electric
motor(s) may occur. Consult the factory if running an
electric machine from a generator A dedicated breaker
of sufficient ampere rating should be installed by an
electrician. Refer to the chart above for electrical
requirements: some models are 208 Volt compatible.
Check with your local Distributor for more information.
The 24 Volt AC Burner control Transformer is wired
for 230 Volts AC input. Rewire the transformer for 208
Volt AC if input voltage is changed to 208 Volt AC.
If your unit is equipped with a ground fault interrupter, it
will have to be reset whenever it is plugged in or if a
ground fault interruption occurs. Test regularly for
proper operation.
POWER TRANSMISSION:
DIRECT DRIVE: Pump is bolted directly to the motor/
engine. If pump needs to be removed, do not force off
by prying or damage could occur. When reassembling,
coat the entire motor shaft with heavy grease, or a
generous amount of anti-seize.
BELT DRIVE: Check belt
condition, alignment and tension
periodically. Replace belts
when they show signs of wear
or cracking. Tighten belts by
loosening the mounting bolts on the pump and generator
to permit rail adjustment. Belts should deflect 1/4" - 1/2"
with 2 pounds of force.
PUMPING SYSTEM:
PUMP: The pump is a positive displacement, oil bath
crankcase, triplex plunger type. It contains 3 plungers
which move forward and backward in a cylinder to
propel water past 3 inlet valves and 3
discharge valves into a high pressure
manifold.
The crankcase oil window should be
checked for oil level and clarity and the pump for oil or
water leaks before each use. The sight window is
located at the rear (opposite the head) of the pump and
should be filled to the middle with Pump Oil , available
at your Hydro Tek dealer. If the oil becomes milky in
color, moisture is entering the crankcase. Change the oil
and contact your authorized Hydro Tek dealer if the
problem persists.
To increase pump life, prevent cavitation (air
bubbles), overheating, and dirty water. Cavitation can
be prevented by keeping filters clean and checking for
air in pump feed lines. Do not run the pump in the
bypass mode (pump running with the trigger gun off), for
a period of more than 5 minutes or the pump will begin
to overheat (maximum water temperature is 145ºF).
Do not run pump dry. Protect from freezing. Do not run
a frozen pump. Wait until it is thawed out to run.
UNLOADER AND PRESSURE RELIEF VALVE: The
unloader valve is preset at the factory to govern
the proper output pressure of your machine. It
will release the pressure of the pump output
back into the inlet if the trigger on the spray gun
is released. NEVER increase the set pressure
on the unloader to exceed the specifications for
your machine. The unloader should be ad-
justed only by qualified personnel.
PRESSURE RELIEF VALVE. In the unlikely event that
your unloader fails, or if the burner overheats
and builds excessive pressure, the pressure
relief valve will vent the pressure into the
atmosphere. If this occurs, turn off the ma-
chine and have it checked by an authorized dealer. The
pressure relief valve will automatically reset itself.
HORSE
POWER
115V
1PH
WIRE
SIZE
208V
1PH
WIRE
SIZE
208V
3PH
WIRE
SIZE
230V
1PH
WIRE
SIZE
230V
3PH
WIRE
SIZE
460V
3PH
WIRE
SIZE
1.5
15A
12/3
N/A
N/A
N/A
N/A
10A
14
N/A
N/A
N/A
N/A
2
20A
12/3
N/A
N/A
N/A
N/A
12A
14
N/A
N/A
N/A
N/A
5
N/A
N/A
26A
10/3
N/A
N/A
24A 10/3 N/A
N/A
N/A
N/A
6.5 / 6
N/A
N/A
N/A
N/A
N/A
N/A
27A 10/3 22A
12/4
13A
14/4
7.5
N/A
N/A
N/A
N/A
N/A
N/A
35A
#8
N/A
N/A
N/A
N/A
10
N/A
N/A
50A
#8
32A
#8
48A
#8
30A
#10
16A
#12
15
N/A
N/A
N/A
N/A
40A
#8
N/A
N/A
38A
#8
20A
#12
