Bosworth Guzzler G2-0501N User manual

Doc M-PR-09-31.012123
O’ M
..
G® G2‐0501N
120  SP D D P
Copyright© 2023 The Bosworth Company
Guzzler® and SapCheck® are registered trademarks of The Bosworth Company

G® G2-0501N 120  D D P
The Bosworth Company
1 Doc M-09-31.012123
I
I……………………………………………………………………………………………………………………………. 2
Assembling Your Pump………………………………………………………………………………………………………………. 2
Power Requirements ………………………………...…………………………………………………………………………… 2
Testing the Pump ……………………………………………………………………………………………………………………. 2
PS………………………………………………………………………………………………………………………………. 3
Protect the Pump from the Elements…………………………………………….…………………………………………… 3
Ventilate Pump to Keep from Overheating……………………………………………………………………………… 3
Quick Connect Couplers between Guzzler and Mainline …………………………………………………………. 3
Install Shut‐off Valve and Vacuum Gauge at Pump Inlet …………………………………………………………. 3
Minimize Pump Back Pressure ……………………………………………………………………………………………….. 3
Use a Strainer to Keep Foreign Materials and Ice from Entering the Pump …………………………….. 4
Recirculation Line for Best Vacuum ………………………………………………………………………………………… 4
TBO…………………………………………………………………………………………………………… 4
Eliminate Leaks for Best Vacuum ……………………………………………………………………………………………. 4
Isolate the Pump to Find Cause of Vacuum Loss …………………………………………………………………….. 4
Keep Ice from Forming Inside Pump ……………………………………………………………………………………….. 4
Drain Sap if Removing Pump from Mainline ……………………………………………………………………………. 4
M‐CD…………………………………………………………………………………… 5
Removing a Diaphragm ………………………………………………………………………………………………………….. 5
Installing a Diaphragm…………………………………………………………………………………………………………….. 6
M‐CPV……………………………………………………………………………………. 6
Pump Valves …………………………………………………………………………………………………………………………… 6
Changing the Valves………………………………………………………………………………………………………………… 6
T…………………………………………………………………………………………………………………….. 7
TS……………………………………………………………………………………………………………………. 8
PEV………………………………………………………………………………………………………………..9
I SAFETY I
NEVER OPERATE YOUR GUZZLER® PUMP WITHOUT THE PUMP COVER PLATE PROPERLY
INSTALLED ON THE PUMP.
NEVER REACH INSIDE THE PUMP OR INSERT ANY OBJECTS INTO THE PUMP WHILE THE
PUMP IS OPERATING. SERIOUS INJURY OR DAMAGE TO THE PUMP WILL RESULT.
ALWAYS CONNECT THE PUMP TO A 120 VAC POWER SOURCE USING PROPERLY INSULAT-
ED CONNECTORS. OPERATING THE PUMP WITHOUT PROPER ELECTRICAL CONNECTIONS
CAN CREATE A SERIOUS RISK OF ELECTRICAL SHOCK.

I
The Bosworth Company
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Doc M-09-31.012123
Your Guzzler® G2‐0501N 120 vac diaphragm pump ships with two spare dia‐
phragms. Additional diaphragms can be purchased through your maple equipment
dealer or directly online from The Bosworth Company at www.thebosworthco.com.
Your pump’s serialnumbercan be found on the side of the pump gearmotor, as
shown in Figure 1.
Assembling Your Pump
Your Guzzler G2‐0501N pump ships with the outlet manifold disconnected from the
pump and packed separately in the box.
To assemble your pump, simply attach the outlet manifold to the twin
pump bodies by slipping the manifold elbow and “T” fittings over the
outlet flanges of the pump bodies. (Figure 2)
Secure the manifold to each pump flange by tightening the Coupler
Nut (#10 in the Exploded View) on the pump flange onto the threaded
ends of the manifold. The nut forces the nylon sleeve against the man‐
ifold to make a secure, leak‐free connection.
Note that you can connect the outlet manifold to your pump so that
the outlet end of the manifold is on the same side as the end of the
inlet manifold, or the opposite side (Figure 3). Similarly, the inlet mani‐
fold can be connected to your pump with the inlet end facing in either
direcon. Choose an orientaon for your inlet and outlet manifolds
that best suits the orientaon of your incoming and outgoing sap lines.
Power Requirements
The Guzzler G2‐0501N SapPuller requires 120
vac power. If power is not readily available, it
can be provided from a generator that sup‐
ports a minimum 200 running watt output.
The motor is a 120 wa motor that is rated
for 1.44 amps at full load. We recommend a
minimum of 1,000 generator to ensure that
your pump has the power required to start up
under very cold temperatures. Be sure that
the generator is actually delivering 120 vac, as
deviations from this voltage – lower or higher
– will result in improper motor operation.
The pump on/off switch is located on the side of the electrical junction box .
Testing the Pump
Before installing the pump in your sugarbush, test your pump by connecng it to power and turning the Power
switch to On. Carefully cover the inlet port with your hand. Then move your hand to cover the outlet port of the
pump. If you can feel vacuum at the inlet port (sucking your hand in) and posive exhaust pressure at the outlet
port (pushing your hand away), the pump is operang properly.
Pump serial number on side of
motor
Figure1
Aach the outlet manifold to the pump.
Figure2
G2 Manifolds are reversible.
Figure3

Recommended pump setup for use on maple sap collecon lines
Figure4
P S
The Bosworth Company
3 Doc M-09-31.012123
P S
Figure 4 shows a recommended installation setup for the Guzzler G2‐0501N pump when used for vacuum produc‐
tion on a maple sap collection line. The topics below refer to that figure in more detail.
Protect the Pump from the Elements
However you deploy your pump, ensure it is protected from the elements and securely mounted. Use the two C‐
clamps provided with your pump to secure the inlet flange to the mounting surface. The support leg of the pump
has a mounting hole that accommodates a 1/4 in (6.4 mm) diameter bolt or screw.
Ventilate Pump to Keep from Overheating
When operating, the pump can develop a motor surface temperature that may exceed 160°F (70°C). If you install
your pump in an enclosure, ensure that it provides ventilation so that the pump motor has adequate airflow during
operation to prevent overheating. The pump motor is thermally protected and will shut off if overheated.
Quick Connect Couplers between Guzzler and Mainline
We recommend the use of Quick Connect Couplers between the pump inlet and mainline so that the pump can be
easily disconnected from and reconnected to your mainline.
Install Shut‐off Valve and Vacuum Gauge at Pump Inlet
We recommend that you install a shut‐off valve and a vacuum gauge – in that sequence – “in front of” the pump,
i.e., just before your connection to the pump’s inlet port (Figure 4). This will allow you to isolate the pump from
your sap lines for trouble‐shooting purposes.
Minimize Pump Back Pressure
Back pressure at the pump outlet will shorten diaphragm lifetime. To minimize back‐pressure, install your Guzzler
at or above your collection tank level. Avoid having the pump “push” sap up a vertical distance or through a long
outlet hose/pipe. Avoid the use of right‐angle bends in the pump’s outlet path, as these can add substantially to
back pressure.
Pump
C-Clamps
Strainer
Connection to
Mainline
Shutoff Valve
Vacuum Gauge
1/8” Recirculating Line
valve control and connection
(from sap tank)
1/4” vacuum connec-
tion to SapCheck®
monitoring system
Outlet to
tank

P S / T  B O
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The Bosworth Company
Doc M-09-
Use a Strainer to Keep Foreign Materials and Ice from Entering the Pump
Early in the season, sap may contain small wood or plastic shavings that can foul or tear the pump valves or dia‐
phragm. (Even sharp ice chips, upon entering the pump, can create the same problem.) We recommend installing a
strainer of the kind pictured in Figure 4 to keep such material from being drawn into the pump. A strainer with a
transparent cap will allow you to see when the filter screen needs to be cleaned so that it does not obstruct sap flow
into the pump.
Recirculation Line for Best Vacuum
Guzzler pump valves seal best when wet. To achieve the best vacuum with your Guzzler, we recommend that you
install a small (1/8” to 1/4” in diameter) recirculation line from your collection tank back to the inlet of the Guzzler
(Figure 4). Regulate this backflow of sap by installing a small shutoff valve where the line connects to the inlet.
When the pump is running, open the valve to allow a small amount of sap to flow back from the collection tank into
the pump. This ensures the valves remain wet and seal optimally. With a recirculating line, some users have in‐
creased vacuum to as much as 28 in Hg.
T  B O
Eliminate Leaks for Best Vacuum
Your Guzzler Pump can develop 19‐28 in. of Hg vacuum, depending on whether the valves are dry or wet. Because
the Guzzler is a low‐cfm (cubic feet of air per minute) pump, even very small leaks can prevent the pump from deliv‐
ering its rated vacuum. Maintain your tap lines to keep your system tight and address problems that can cause vacu‐
um leaks.
Isolate the Pump to Find Cause of Vacuum Loss
If you experience a loss of vacuum in your system – as registered by the gauge near the pump – slowly turn the shut‐
off valve to isolate the pump from your mainline. DO NOT SHUT THE VALVE SUDDENLY, AS PUMP DAMAGE MAY
RESULT. If the gauge begins to return to normal operating vacuum, then the pump is working properly, and the
source of the leak is somewhere in your sap lines or taps.
If the pump fails to recover normal vacuum, then the pump is the source of the problem. Inspect the pump dia‐
phragms and/or valves for any holes or tears. In the case of the valves, check for and remove any material that may
have entered a pump body and lodged in the valve, preventing the valve from proper opening and closing.
Keep Ice from Forming Inside Pump
Sap can freeze within the pump body. If the pump is turned on when there is ice in a pump body, it will result in
damage to various pump components, including the pump body, valves and diaphragm. If there is a risk of freezing
conditions, we recommend that you disconnect the pump from your sap lines when the pump is not running and
drain any excess sap from the pump. Some users install a small heat lamp in the enclosure with the pump to prevent
ice from forming when the pump is not operating.
Drain Sap if Removing Pump from Mainline
To shut the pump down and disconnect it from the mainline, first slowly close the shut‐off valve to isolate and main‐
tain any vacuum in the mainline. Then, turn the pump off. Disconnect the pump from the mainline, using Quick
Couplers if you have used these for your pump‐to‐mainline connection. Turn the pump back on briefly to flush any
remaining sap from it. Finally, tilt the pump to drain any remaining sap.