FLOJET 2100-12, 2100-694, 2100-740, 2100-750 Specifications

FEATURES

• Self-Priming

• Dry Running

• Automatic Operation

• Models Meet U.S.C.G. Electrical Standards

SPECIFICATIONS

Motor: Permanent Magnet, Ball Bearing. CE Models

are fully suppressed.

Pump: Two chamber diaphragm design; Self-priming

up to 6 ft. suction lift; Pump able to run dry
without damage.

Port: Pump housing inlet and outlet are 3/8” NPT

female threads.

Duplex Diaphragm Design

Models2100 Series

Automatic Water System Pump &

Shower Drain • General Purpose Pump

Model 2100 Series

Pump Series Dimensions - Inches (mm) Weight

Height Width Length lb. (kg)

2100-XXX 3.75 (95) 3.25 (83) 8.2 (208) 3.3 (1.5)

AMP DRAW FUSE FLOW

MODEL* VOLTS @ 10 psi (0.7 bar) AMPS GPM (l/min) ON OFF

2100-12 12V dc 2.5 7 2.3 (8.7) 15 (1) 30 (2)

2100-694** 12V dc 2.5 7 2.3 (8.7) No Pressure Switch

2100-740 24V dc 1.5 5 2.3 (8.7) 15 (1) 30 (2)

2100-750 12V dc 2.5 7 2.3 (8.7) 15 (1) 30 (2)

*CE fully suppressed models are identified by a prefix “R” and a CE mark on the label. (i.e. R2100-740)
Self Declaration Of Conformance (SDOC) is available upon request.
**Shower Drain Model only

OPERATION FOR

ATER SYSTEM PUMPS

W

, does not include por

t connectors, see Accessories to or

OPERATION FOR
THE SHOWER DRAIN PUMP

PRESSURE SWITCH PSI (BAR)

der connectors.

The FLOJET 2100 series pumps are automatic demand
pumps. They will automatically tur

f when all fixtur

opened and tur

When starting from a completely drained system allow
time for the demand pump to fill the hot water tank. After
refilling the tank the pump is reprimed by opening a
fixture. Allow air to vent and close fixture when water
flow is steady. Faucet strainers and aerators should be
cleaned regularly.

n of

n on when a fixtur

e closed.

es ar

e is

Model 2100-694 is a utility/shower drain pump. The

our shower drain

f automatically

pump will not tur
pump is designed to self-prime up to 6 feet suction lift
(vertical distance from shower pan to pump inlet). It is

ecommended you utilize a “lighted” on-of

r
that pump is tur
able to run dry (no liquid) for extended periods with no
damage to the pump, however this could cause
needless batter

n of

ned of

y drain.

f when not in use. The pump is

. Y

f switch so

(+)Red (+)

Fuse

Switch

Battery

(–)

Black (–)

Pumpgard

Water

Tank

Jabsco

City Water

Entry

Water

Heater

Check

Valve

TM

B

A

Flojet Shower

Drain Pump

Install Strainer
Inlet Side Only

AUTOMATIC WATER SYSTEM INSTALLATION

INSTALLATION

STEP 1

Remove shipping plugs from pump ports. Some water
from factory testing may spill out.

STEP 2

Install inlet A and discharge B port connectors.

STEP 3

Insert rubber mounting grommets onto base plate.

STEP 4

Mount pump vertically, with pump head down or
horizontally in an accessible location. Do not compress
grommets.

SHOWER DRAIN INSTALLATION

Model 2100-694

STEP 5

Use 1/2” or 3/8” I.D. flexible hose (preferably braided or
reinforced). Use hose clamps on the slip-on barb hose
connectors.

STEP 6

Install no less than 3/8” I.D. hose for feed lines to
fixtures. Use high pressure hose on all city water lines.

STEP 7

Install a Flojet strainer in an accessible location (for
inspection and cleaning) between the tank and pump
inlet. This strainer or equivalent is required for pump
warranty to be valid.

WIRING

In an easily accessible location, install a switch to
control electricity to the pump. Turn the pump off when
not in use for extended periods, or when tank is out of
water.

A 7 amp. fuse should be installed in the positive line with
the pump being its only load. (24V model, use 5A fuse).

Wire size based on total wire length.

0 - 20 ft.

20 - 50 ft.

50 - 80 ft. #12 AWG

#16 AWG

WG

#14 A

TROUBLESHOOTING

4

5

5 73

19

2

WARNING: BEFORE SERVICING PUMP, TURN OFF PUMP AND DRAIN WATER FROM SYSTEM!!

Pulsating Flow - Pump cycles on and off

• Restricted pump delivery. Check discharge lines, fittings and
valves for clogging or undersizing.

Failure to Prime - Motor operates, but no pump discharge

• Restricted intake or discharge line. Open all fixtures, 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 Falls To Turn On

• Pump switch in off position

• Loose wiring connection

•

Blown fuse

• Pressure switch failure

•

Defective motor

Pump Falls to Turn Off After All Fixtures Are Closed

• Empty water tank

• Insufficient voltage to pump (low battery)

• Discharge line leak

• Defective pressure switch

• Punctured pump diaphragm

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 motor

Quite often when a pump is worn or defective the one failed component has overburdened others. To avoid frequent aggravating

DISASSEMBLE

Pressure Switch

1. Remove switch (9). Disconnect switch wires.

2. Loosen four pump head screws and carefully remove upper
housing assembly (1)

Upper Housing

Follow steps 1 and 2

3. Inspect check valve (2) for debris

4. Reassemble new upper housing (1)

Check Valve Assembly

Follow steps 1 and 2
Replace check valve (2)

3.

4. Reassemble upper housing (1)

Lower Housing, Diaphragm, Motor

Follow steps 1 and 2, then remove 2 recessed screws.

3. Rotate lower housing (4) so drain notch opening on lower
housing near baseplate exposes set screw which holds
bearing housing to shaft.

4. Loosen this set screw by inserting wrench 1/8” Allen wrench
into drain notch opening. Then, slide lower housing (4) of
motor shaft.

Diaphragm Cont’d

5. Loosen two cam piston screws with Phillips head screw
driver and pull apar
always be replaced when a new diaphragm is installed.)

Motor Cont’d

5. Replace Motor

repairs, Flojet offers service kit assemblies making repairs as quick and easy as possible.

REASSEMBLE

Motor

1. Reassemble lower housing assembly (4) to motor. (Follow
steps 4 to 10.)

Diaphragm

2. Lower housing is assembled with:

• Flat side of diaphragm and outer pistons facing motor

• Hex stem of inner pistons must be aligned into hex holes in
outer pistons (4).

Outer pistons must be aligned with alignment slots on cam

•
assembly making sure screw holes align in cam assembly,
otherwise diaphragm will leak.

ews par

ews secur

. Set scr

ely

alve

ead or strip out thr

om inner pistons. (Pistons should

t cam fr

ighten cam piston scr

T

3.
diaphragm, then tighten scr

Lower Housing

4. Reassemble lower housing assembly (4) to motor.
Retighten set scr

5.
positioned facing motor covering seam (indentation).
(Positioning of this screw is critical to avoid misalignment and
subsequent diaphragm damage.)

Upper Housing, Check V

f

6. Reassemble upper housing (1)

7. Properly seat O-Ring in check valve assembly (2) and check
if ferrules and screen are in place on upper housing (1)

Install check valve (2) into upper housing (1) and push in.

8.
Assemble on to lower housing (4), align 4 screws on to motor

9.
by rotating lower housing (4) if necessary.

ighten scr

T

10.

essur

Pr

1. Place switch against front of pump (9), insert screws and take
car

Reconnect wir

2.

e Switch

e not to cr

ew secur

ews evenly to 30 in. lbs. tor

oss thr

es.

, center piston in

tially

ely (18 in. lbs. tor

ew head must be

que.

eads in housing.

que)

PUMP SERVICE PARTS

MODEL #

KEY DESCRIPTION 2100-12 2100-694 2100-740 2100-750

7 Motor 12V 2009-004C 2009-004C 2009-004C
7 Motor 24 V 2019-001A

Pump Service Kit 21046-057 21046-057 21046-057
Pump Ser

vice Kit 21046-121

9 Pressure Switch Assy. 2095-105 2095-105 2095-105

*Ser

vice Kit

Pump Service Kit includes item #2, 3, 5 and 6.

**CE fully suppressed motors are available, order R2009-004C or R201 9-001 A respectively.

ACCESSORIES
PORT CONNECTORS (NYLON)

Part Number Pump Connection Plumbing Connection

91010-001 3/8” NPT (m) X 3/8” Hose Barb 90° Elbow

91010-002 3/8” NPT (m) X 3/8” Hose Barb Straight

91010-005 3/8” NPT (m) X 1/2” Hose Bar 90° Elbow

91010-006 3/8” NPT (m) X 1/2” Hose Barb Straight

91010-056 3/8” NPT (m) X 1/2” Male QEST Straight

STRAINERS

Pump Series Strainer Number Inlet Outlet Screen

2100-XXX 1740-003 3/4 Barb 3/4 Barb 40 Mesh

1740-002 1/2 Barb 1/2 Barb 40 Mesh
1740-004 1/2 M Qest 1/2 M Qest 40 Mesh

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. This is
only an overview of our limited warranty. If you would like a copy
of our warranty, please call or write FLOJET.

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.

www.flojet.com

U.S.A.
Flojet
20 Icon
Foothill Ranch, CA 92610
Tel: [phone]
Fax: [phone]

Copyright 2005, ITT Industries

UNITED KINGDOM
Flojet
Bingley Road, Hoddesdon
Hertfordshire EN11 OBU
Tel: [phone]

[phone]

Fax:

Printed in U.S.A.

CANADA
Fluid Products Canada
55 Royal Road
Guelph, Ontario N1H 1T1

el: 519 821.1900

T
Fax: [phone]

JAPAN
NHK Jabsco Company Ltd.
3-21-10, Shin-Yokohama
Kohoku-Ku, Yokohama, 222

045.475.8906

el:

T
Fax: [phone]

All Rights Reser

ved

GERMANY
Jabsco GmbH
Oststrasse 28
22840 Nor
T
Fax: [phone]

derstedt

el: [phone]

m: 81000-127

For

ITALY
Jabsco Marine Italia
Via Tommaseo, 6
20059 Vimercate, Milano

el: [phone]

T
Fax: [phone]

Rev. B 07/2005