Dover EnviroGear S1-24-DI User manual

ENVIROGEAR PUMP COMPANY 2ENV-10000-E-02
TABLE OF CONTENTS
SECTION 1 CAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
SECTION 2 TECHNICAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
SECTION 3 INSTALLATION & STARTUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
SECTION 4 REPAIR PARTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
SECTION 5 PUMP ADJUSTMENTS AND MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
SECTION 6 PUMP DISASSEMBLY & REPAIR PROCESSES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
SECTION 7 TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
SECTION 8 HOW TO RETURN PUMP TO FACTORY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
SECTION 9 WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

ENV-10000-E-02 3ENVIROGEAR PUMP COMPANY
SECTION 1
CAUTIONS
CAUTION: In any positive-displacement pump
system, a reliable pressure protection device
must be used in the discharge piping to avoid a
dangerous pressure increase, which could cause
the pump or any component in the discharge
piping to burst, which could cause serious injury.
A pump-mounted integral relief valve is not
intended to be used in this manner.
CAUTION: This pump contains powerful
permanent magnets that can cause serious injury.
Read the appropriate section of this service
manual before doing any service work.
DANGER: Magnetic Field. Can disrupt medical im-
plantssuchaspacemakers. Implantwearersshould
remain a minimum of 1ft (0.3m) away from pump
and 3ft (1m) away from disassembled magnets.
Pinch Point. Inner and Outer magnets strongly at-
tract each other which can crush and cut.
CAUTION: Magnets inside pump can damage
electronic equipment or magnetic media.
CAUTION: This pump is designed to rotate only
in the direction indicated. Do not run the pump in
the opposite direction, for long periods because
internal passageways that control axial thrust
will not work correctly, causing premature wear
and reduced pumping efficiency.
CAUTION: The inner magnets on the back of the
rotor assembly are strongly attracted to the outer
magnets in the outer drive assembly. During the
separation process, there will be a strong force
of up to 300 lbs (136 kg) trying to pull them back
together, which can create a powerful pinch point.
To safely separate the rotor assembly from the
outer drive assembly, follow the instructions
below and use the following equipment:
CAUTION: Carbon-graphite bushings are very
brittle, so they must be handled and assembled
using great care.
CAUTION: You must press the bearing by its
inner ring to avoid damaging it.
CAUTION: Failure to have each magnet segment
in opposite polarity with adjacent magnets will
cause a significant reduction of coupling torque.
CAUTION: Maximum temperature limits are
base upon mechanical stress only. Certain
chemicals will significantly reduce maximum
safe operating temperatures. Consult Chemical
Resistance Guide for chemical compatibility and
temperature limits.
CAUTION: Prevention of static sparking – if static
sparking occurs, fire of explosion could result.
Pump, valves, and containers must be grounded
to a proper grounding point when handling
flammable fluids and whenever discharge of
static electricity is a hazard.
CAUTION: Always wear safety glasses when
operating pump.
• Crane, hoist or other suitable lifting device
capable of generating at least 400 lbs
(182 kg), and
• Sturdy workbench that has the following
features:
is positioned beneath the lifting device,
and is firmly anchored to the floor, or if
unanchored, the workbench must weigh at
least 400 lbs (182 kg), and is strong enough
to resist a lifting force of up to 400 lbs (182
kg). Pump Disassembly Tool F-00096 or
F-00097.
• Always use an arbor during assembly to
guide and align the bushings.
• When pressing bushings, use a light
lubricant.
• When pressing bushings, always use a
smooth, continuous motion – stopping with
the bushing partially exposed can crack the
bushing.
• After assembly, always inspect the bushings
closely for cracks.

ENVIROGEAR PUMP COMPANY 4ENV-10000-E-02

ENV-10000-E-02 5ENVIROGEAR PUMP COMPANY
SECTION 2
TECHNICAL INFORMATION
Models Available
(lb) (kg)
S1-24-DI 2" NPT 24.3 780 75 152 69
S1-32-DI 2" NPT 32.6 780 100 152 69
S1-55-DI 3" ANSI 150# RF 54.9 640 135 307 139
S1-69-DI 3" ANSI 150# RF 68.7 640 170 307 139
S1-82-DI 3" ANSI 150# RF 82.4 640 200 307 139
Nomimal
Flowrate
(usgpm at
max s
p
eed
)
Pump Weight
Ductile Iron
Model Std Port Size
Capacity
(cu. inches
per revolution)
Max Pump
Speed (rpm)
Max Differential Pressure = 200 psi (13.8 bar)
Figure 2.1 – ductile iron models
(lb) (kg)
S1-2-CS 1 1/2" NPT 2.19 1800 15 53 24
S1-4-CS 1 1/2" NPT 4.34 1800 30 53 24
S1-24-CS 2" NPT 24.3 780 75 152 69
S1-32-CS 2" NPT 32.6 780 100 152 69
S1-55-CS 3" ANSI 150# RF 54.9 640 135 307 139
S1-69-CS 3" ANSI 150# RF 68.7 640 170 307 139
S1-82-CS 3" ANSI 150# RF 82.4 640 200 307 139
Nomimal
Flowrate
(usgpm at
max s
p
eed
)
Pump WeightCarbon Steel
Model Std Port Size
Capacity
(cu. inches
per revolution)
Max Pump
Speed (rpm)
Max Differential Pressure = 200 psi (13.8 bar)
Figure 2.2 – carbon steel models
(lb) (kg)
S1-2-SS 1 1/2" ANSI 150# RF 2.19 1200 10 53 24
S1-4-SS 1 1/2" ANSI 150# RF 4.34 1200 20 53 24
S1-24-SS 2" ANSI 150# RF 24.3 640 55 152 69
S1-32-SS 2" ANSI 150# RF 32.6 640 80 152 69
S1-55-SS 3" ANSI 150# RF 54.9 520 110 307 139
S1-69-SS 3" ANSI 150# RF 68.7 520 140 307 139
S1-82-SS 3" ANSI 150# RF 82.4 520 160 307 139
Nomimal
Flowrate
(usgpm at
max s
p
eed
)
Pump WeightStainless
Steel Model Std Port Size
Capacity
(cu. inches
per revolution)
Max Pump
Speed (rpm)
Max Differential Pressure = 150 psi (10.3 bar)
Figure 2.3 – stainless steel models
Notes:
1. Recommended pump speeds may be lower than the maximum shown in Figures 2.1, 2.2
and 2.3, based on specific application conditions.
2. Pump weights shown in Figures 2.1 and 2.2 are based on standard pumps with a relief
valve. This weight will vary, depending on specific pump options.
3. EnviroGear will supply more specific flowrate values for your application conditions upon
request.

ENVIROGEAR PUMP COMPANY 6ENV-10000-E-02
TECHNICAL INFORMATION
Temperature Ratings
O-Rings Temperature Ratings
-50 0 50 100 150 200 250 300 350 400 450 500 550
Kalrez®
FEP-encapsulated
Viton®
Viton®
fluid temperature (°F)
Figure 2.4 – o-rings temperature ratings
Magnets Temperature Ratings
-50 0 50 100 150 200 250 300 350 400 450 500 550
M6H , M7H
(Samarium-Cobalt)
M6M, M7M
(S-C inner mags,
N-I-B outer mags)
M6, M7
(Neodymium-Iron-Boron)
fluid temperature (°F)
Figure 2.5 – magnets temperature ratings
Internal Clearances Temperature Ratings
-50 0 50 100 150 200 250 300 350 400 450 500 550
high-temperature
standard
fluid temperature (°F)
Figure 2.6 – internal clearances temperature ratings

ENV-10000-E-02 7ENVIROGEAR PUMP COMPANY
TECHNICAL INFORMATION
Magnetic Coupling Strengths

ENVIROGEAR PUMP COMPANY 8ENV-10000-E-02
TECHNICAL INFORMATION
Relief Valve Performance

ENV-10000-E-02 9ENVIROGEAR PUMP COMPANY
TECHNICAL INFORMATION
Internal Cooling Circuit
This pump has an internal cooling circuit that circulates some of the pumped fluid through the
magnet chamber. The circuit starts at the discharge port and ends at the suction port. This circuit
h
Note: Consult factory at low differential pressures to ensure proper cooling path circulation.
as three functions:
1. cool the inner magnets,
2. keep fluid in the magnet area from becoming stagnant,
3. lubricate and cool the rotor and idler bushings.
There are special plugs in the casing and head that must be in the correct position to
complete the circuit:
1. The casing needs to be vented on the DISCHARGE side. In some cases,
this is done with an orifice plug that has a hole in it, positioned in the casing hole
behind the DISCHARGE port. In other cases, this is done by leaving the casing hole
behind the DISCHARGE port open.
2. The casing block-off plug is solid (no hole). It belongs in the casing hole behind the
SUCTION port.
3. The head block-off plug is solid (no hole). It is only used in pumps that have no relief
valve, and it belongs in the head hole on the DISCHARGE side.
Casing orifice
plug ( wi th hole )
SUCTION
SUCTION
DISCHARGE
DISCHARGE
Casing block-off
plug (no hole)
Head block-off
plug ( no ho le)
This hole
left open
Figure 2.12 – special cooling circuit plugs in correct positions
Internal Cooling Circuit

ENVIROGEAR PUMP COMPANY 10 ENV-10000-E-02
SECTION 3
INSTALLATION & STARTUP
Pump Location
It is always best to minimize suction line losses, so the best location for any pump is as close as
practical to the liquid supply source. Also, it is best to locate the pump below the liquid supply, if
practical, to maximize inlet pressure to the pump.
A proper location should leave enough room around the pump to allow for inspection or repair of
the pump without removing it from the foundation.
Pump Foundation
With any pump, a rigid foundation is essential for optimal reliability and durability. Always mount
the pump on a foundation that is rigid enough to keep the pump from moving during operation or
in the event of any stress or impact that may occur during the life of the pump. Please contact
EnviroGear for more information on premium EnviroBase base plates.