Model 2100
Industrial Series
Bypass Pump
MOUNTING
Flojet 2100 is a self-priming pump. It may be located
several 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-inch 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 20 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.
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 24 Volt DC pumps, match red (+) and black (-) power
leads with red and black leads on motor or switch.
The bypass and standard pump (no bypass, no switch)
must be started and stopped by an electrical (on-off)
switch.
OPERATION
Allow pump to prime with discharge line (or spray valve)
open, to avoid airlock. Built-in bypass will allow the
pump to bypass internally when discharge is restricted
or closed and will stop bypassing when the discharge
valve is open.
When liquid supply to pump is depleted pump will
continue to operate. Running dry will not damage the
pump. Turn off manually.
When the bypass type pump is allowed to run against a
closed valve the internal bypass will automatically
recirculate the flow within the pump at the preset bypass
pressure.
Caution:
The standard series pump is not equipped with
a bypass or pressure switch. Allowed to run against a
closed valve the excessive pressure developed by the
pump will cause system or pump damage.
Model 2100 Bypass Pump
PUMP INSTALLATION
Failure to Prime–
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.
Low Flow and Pressure
• Air leak at pump intake.
• Accumulation of debris inside pump and plumbing.
• Worn pump bearing (excessive noise).
• Punctured pump diaphragm.
• Defective rectifier or motor
• Insufficient voltage to pump
TROUBLESHOOTING
WARRANTY
FLOJET warrants this product to be free of defects in
material and/or workmanship for a period of one year
after purchase by the customer from FLOJET. During
this one year warranty period, FLOJET will at its option,
at no charge to the customer, repair or replace this
product if found defective, with a new or reconditioned
product, but not to include costs of removal or
installation. No product will be accepted for return
without a return material authorization number. All return
goods must be shipped with transportation charges
prepaid. This is only a summary of our Limited Warranty.
For a copy of our complete warranty, please request
Form No. 100-101.
RETURN PROCEDURE
Prior to returning any product to FLOJET, call customer
service for an authorization number. This number must
be written on the outside of the shipping package. Place
a note inside the package with an explanation regarding
the reason for return as well as the authorization
number. Include your name, address and phone
number.
