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Model 2100 Industrial Series − Demand Pump
PUMP INSTALLATION MOUNTING
Flojet 2100 is a self-priming pump. It may be located sev-
eral feet from the tank, above or below the liquid level (lt
is not a submersible pump.) For vertical pump mounting
be sure that the motor is located on top. This will prevent
water from entering the motor chamber in event of a leak.
Pump head may be rotated in 90° increments to simplify
plumbing.
PLUMBING
For best performance, flexible 3/8" (9.5 mm) minimum
hose is recommended instead of rigid piping at the pump.
Use plastic fittings at the pump port. Brass fittings will break
pump housing if over tightened. Do not install pump such
that plumbing causes excessive stress on either port.
It is essential that a 40 mesh strainer or filter be installed
in the tank or in the pump inlet line to keep large foreign
particles out of the system. The use of check valves in the
plumbing system may interfere with the priming ability
of the pump. Check valves, if used, must have a cracking
(opening) pressure of no more than 2 psi (.14 bar).
ELECTRICAL
On 115 Volt AC pumps, the black wire lead is common,
the white is neutral and green/yellow is ground. On 230
Volt AC pumps, the brown wire lead is common, the blue is
neutral and the green/ yellow is ground. Never connect the
green (or green/ yellow) wire to a live terminal. On 12 and
and 24 Volt DC pumps, match red (+) and black (-) power
leads with red and black leads on motor or switch.
CAUTION: (115 Volt AC) UL recognition is
based on testing using water.
WARNING: Do not use a pump if it
presents some damage such as burned or
broken pressure switch, exposed electric
wire and/or contacts.
OPERATION
Allow to prime with discharge line (or spray valve) open to
avoid airlock. Built in pressure switch will shut off pump
automatically when discharge valve is closed and will re-
start pump when valve is opened. When pump runs out
of liquid, it will continue to operate. Running dry will not
damage the pump. Turn off manually.
SPRAY TIP
In spraying applications, the pressure generated by the
pump is generally dependent upon the size of the spray
nozzle. An undersized spray nozzle will cause the pump
pressure switch to cycle on and off and create a pulsating
flow from the pump. To maintain a smooth flow and con-
stant operating pressure, the smallest size spray nozzles
that may be used are as follows:
MODEL
EQUIV. ORIFICE DIAM.
02100030
02100031
02100032
02100034
02100035
02100130
02100131
02100132
02100134
*Ref. Spraying Systems Catalog
CAUTION: Electrical wiring should be
performed by a qualified and competent
electrician, in accordance with all local and
national electrical codes.
EXPLOSION HAZARD: Do not use
motor pump units for pumping gasoline or
other flammable liquids with flash point
below 100°F (37.8°C). Doing so may
result in explosion which could cause
personal injury, death or property damage.
TROUBLESHOOTING
WARNING: BEFORE SERVICING PUMP,
TURN OFF PUMP AND DRAIN WATER FROM
SYSTEM!!
Motor Operates, But No Pump Discharge
• Restricted intake or discharge line. Open all line valves,
check for ''jammed'' check valve poppets and clean
clogged lines.
• Air leak in intake line.
• Punctured pump diaphragm.
• Defective pump check valve.
• Crack in pump housing.
• Debris in check valves.
Motor Fails to Turn On
• Pump or equipment not plugged in electrically. Loose
wiring connection.
• Defective motor or rectifier.
• Frozen cam/bearing.
2
MINIMUM NOZZLE SIZE
LAST 2 DIGITS*
.072"
08
.062"
06
.078"
10
.052"
04
.078"
10
.078"
10
.072"
08
.094"
15
.062"
06
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