Flofab GEM User manual

HIGH EFFICIENCY INTELLIGENT
CIRCULATING PUMP

Catalog 1.Instructions for use
1.Instructions for use
2.Cautions
3.Product Overview
4.Product Installation
5.Product introduction
6.Initial startup and operation
7.Troubleshooting table
8.Technical Data
9.Dimension
10.Maintenance
11.Warranty Terms
4.1 Installation location
4.2 Installation
4.3 Installation direction
4.4 Control box position
4.5 Electrical installation
5.1 Model composition and meaning
5.2 Nameplate
5.3 Insulation foam
5.4 Control function
6.1 Before start
6.2 Evacuate the pump
6.3 Start-up products
6.4 Product setup
7.1 Operation Status
7.2 Fault Cause and Finding
3
4
6
8
8
8
8
9
10
12
12
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13
14
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Dear users, thank you for your trust and support. You are welcome to use
our company's GEM series variable frequency shielded circulation pump
(hereinafter referred to as pump)and we will wholeheartedly provide you with
excellent service. Please carefully check whether the received product is
consistent with the ordered product, whether the accessories and instruction
manuals are complete, and whether there is any damage during transportation. If
you find the above situation, please contact our sales department or local
dealer in time.
Indicates a clause that there is a possibility of endangering personal safety
and must be strictly observed.
Indicates a clause that requires special attention to prevent damage to
the pump.
This warning label indicates that please do not touch the pump while
the pump is running and when the temperature of the entire pump is still
very high after the operation is stopped.
This warning label indicates that the piping inside the pump contains
high-pressure liquid, and the valves on both sides need to be closed
before operation during maintenance and disassembly.
Before using this product, please be sure to read this manual carefully
and follow the product operating procedures. Please note that the product
(including the instruction manual) is subject to any future changes without
notice.
Attention
Warning
In order to ensure the long-term stable operation of the product, before you
install, operate, overhaul or maintain, please read this manual carefully, so as
to fully understand the relevant safety issues and the technical parameters and
operation methods of the pump.
Attention
This warning label indicates that there may be a risk of electric shock.
When wiring, repairing, or maintaining, please disconnect the

2.Cautions
In order to ensure personal safety, please read the following information
carefully before you install, operate, repair or maintain.
The power supply used must be consistent with the power supply
identified on the product. The user must confirm that only qualified
personnel with professional certification and proficiency in this manual
can install and maintain this product.
When checking and repairing the pump, the power must be cut off
before operation. This can avoid electric shock or sudden start of the
pump, which may cause injury or death.
Warning
Before starting the pump, the motor must be effectively grounded and a
properly rated motor protection switch must be connected.
The pump must not be installed in a wet or potentially splashable area.
To facilitate maintenance, a shut-off valve should be installed on each
side of the pump.
The heating pipes should not be filled with non-softened water
frequently to avoid the increase of calcium content in the circulating
water in the pipes and blocking the impeller.
The operating ambient temperature of the pump is 0~40℃. Storage
ambient temperature is 0~70℃
The liquid may be high temperature and high pressure, and the system
must be completely drained of liquid or the valves on both sides must
be closed before moving and dismantling the pump.
In summer or in hot environments, ventilation must be ensured to avoid
possible failures caused by condensation.
Do not start the pump without fluid.
In winter, when the pump system does not work or the ambient
temperature drops below 0°C, the liquid in the system should be completely
emptied to avoid freezing and cracking of the pump body.
If the pump is not used for a long time, close the pump inlet and outlet
pipe valves and disconnect the power supply.
If the cable is damaged, it must be replaced by qualified personnel.
If the pump overheats, close the pump inlet valve and cut off the power
immediately. If you find that the motor is abnormal, please contact your
supplier or service center immediately.
If the fault cannot be solved according to the manual, please immediately
close the inlet and outlet valves of the pump, cut off the power supply,
and contact the supplier or service center immediately.
This product should be placed out of the reach of children. After
installation, take isolation measures to avoid children's proximity.
This product should be stored in a dry, well-ventilated place with low
temperature.
Warning
Warning
Warning
Warning
Attention
Attention
Attention
Attention
Attention
Attention
Attention
Attention
Attention
Attention
Attention
Attention

3.Product Overview Outline structure diagram
Internal structure diagram
Pumped liquids
GEM series variable frequency shielded circulation pump(hereinafter
referred to as electric pump), the electric pump is mainly composed of four
parts: motor, pump, seal and controller. The motor is a shielded motor with
a permanent magnet rotor, and the drive is controlled by a special inverter.
The water pump and the motor are sealed by a shielding sleeve, and a
rubber sealing ring is used for static sealing at the sealing part of the fixed
stop. This product is suitable for the following systems:
Stable variable flow heating system
Variable temperature pipeline heating system
HVAC system
Industrial circulation system
Domestic heating and domestic water supply system
The pump is equipped with a control panel and knob on the front for
user-friendly operation.
The pump is suitable for pumping liquids with easy flow, small viscosity, clean,
non-corrosive and non-explosive, and the liquid must not contain solid particles
or fibers that can cause mechanical or chemical damage to the pump.
Cover
Display
Knob
Button
Wiring Post
Housing
Pump Body
Barrel
Model：GEM
Inlet
Outlet

4.Product Installation
4.1 Installation location
The pump should be installed indoors.
4.3 Installation direction
4.2 Installation
When installing a circulation pump, the arrow on the pump casing
indicates the direction of flow of the liquid through the pump.When
installed, the shaft of the electric pump must be horizontal.
4.4 Control box position
Junction box can be rotated within 90°
The procedure for changing the position of the
junction box is as follows:
a、Close the inlet and outlet valves and relieve pressure;
b、Unscrew and remove the four socket head cap screws
securing the pump body;
c、Rotate the motor to the desired position and align
the four screw holes;
d、Reinstall the screws and tighten them diagonally clockwise;
e、Open the inlet and outlet valves.
The pumped liquid may be high temperature and high pressure. Before
removing the socket head cap screws, the liquid in the system must be
drained or the valves on both sides of the electric pump must be closed.
When changing the position of the junction box, the electric pump
can only be started after the system is full of pumped liquid or the
valves on both sides of the electric pump are open.
Warning
Warning

4.5 Electrical installation
Perform electrical connection and protection according to local regulations.
Check that the supply voltage and frequency values match those listed on
the nameplate.
Electric shock
Death or serious personal injury
-Connect the pump to an external power switch with a minimum contact
gap of 3mm between the electrodes.
-Ground or electrical neutralization can be used for protection against
non-direct contact.
Make sure the pump is connected to the external main switch.
The pump does not require an external motor switch.
The motor is equipped with thermal protection device to avoid slow
overload and stall.
After powering up the pump, the pump will start in about 5 seconds.
1x230V±10%，50/60Hz，PE.
The voltage tolerance is only for the variation range of the power supply
voltage, and the pump must not be operated at a voltage other than the
voltage indicated on the nameplate.
Supply voltage
Step
1
2
Measures Illustrations
Remove the screws from
the housing and cover
Removing the cover
RCD
Wiring Diagram
Example diagram of a plug-connected motor with mains switch,
backup fuse and additional protective equipment
Warning
Step
3
4
5
6
Measures Illustrations
Strip the cable conductor
according to the diagram and
connect the cable conductor
to the plug.
Insert the power plug into
the female socket in the
control box.
Fasten the cable connector
and reassemble the cover.
Rotate the knob slowly, after
the knob hole on the mask is
aligned with the control rod,
fasten the cover with the
housing screw.
Attention

The water pump foam for the heating system is attached with the pump.
Before installing the water pump, remove the heat insulating foam, and
then put the foam on the pump body after the installation is completed.
No
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Name
Product Name
Model
Minimum current(A)
Maximum current(A)
Minimum power(W)
Maximum power(W)
Maximum system pressure
Voltage(V)
Frequency(Hz)
Enclosure protection grade
Ambient temperature
Energy Efficiency Index, EEI
Serial number
CE mark and approvals
5.Product introduction
5.2 Nameplate
5.1 Model composition and meaning
3 4 5 6 7 8 9 10 11 12 13 14
21
4.4 Insulation foam
GEM
Example：GME50-120F 280
Port-to-port length:280mm
Connector type:F indicates flange, no letter indicates thread
Max. head，Unit is dm
Nominal diameter of inlet and outlet,Unit is mm
Model number
Limit heat loss from the pump body.
Reduce heat loss from the pump by physically isolating the
pump casing from the surrounding environment.
Attention

Proportional pressure curve(PP1,PP2 or PP3)
Constant pressure control is used to adjust pump performance based on actual
system heat demand, but the pump performance curve will depend on the desired
pump curve. The pressure setting range of the pump is 0-12m, which can be
set by yourself.
Proportional pressure control is used to adjust the pump performance
according to the actual system heat demand, but the pump performance
depends on the required pump curve PP1, PP2 or PP3. Three adjustable
gears, low, medium ,high. Three adjustablegears, low, medium ,high.
Constant speed curve
At constant speed, the pump operates at a constant speed, independent of
the actual flow demand of the system, and the pump performance is determined
according to the desired performance curve.Pump speed setting range
1200-4200rpm, 60rpm/grid, can be set by yourself.
015
5.4 Control function(Take GEM50-120 as an example）
Constant pressure curve
Choosing the correct constant pressure setting depends on the
characteristics of the heating system and the actual heat demand.
Figure2 Constant pressure curve/setting
Figure1 Three proportional pressure curves/settings
Choosing the correct proportional pressure setting depends on the
characteristics of the heating system and the actual heat demand.
Figure3 Constant speed curve/setting
Choosing the correct constant speed setting depends on the
characteristics of the heating system.

6.4 Product Setup
6.4.1 Operation Panel
6.4.2 Menu Overview
Step
1
2
3
Measures
Button Function
Home
Control Mode
Setpoint
Estimated flow
Running Status
Control Mode
Motor speed
Estimated flow
Head
Head
Fault Log
Current Failure
Normal
Stop
Min speed
Max speed
Low
Medium
High
English
LCD off time
Constant pressure
setting
Constant speed
setting
Proportional pressure
Fault Code
Power and power
consumption
Running mode
Date Setting
F0,F6,F8,F12,F14
F1,F2,F3,F7,F13
F9,F10,F11
F4
F5
Time Setting
Proportional pressure
instruction
Constant pressure
instruction
Constant speed
instruction
Date，time settings
Control mode instruction
Auxiliary Failure Advice
Version
Control Mode
Constant pressure
Constant speed
Language set
Default set
中文
Warning and Alarms
Status Set Assist
Back to "Home" interface
Return to the previous
menu
Navigate between the main
menu, submenus, and numbers,
adjust the numbers
Press to save the changed
settings and expand the
menu
Illustrations
Turn on the power of the
water pump, the water pump
will start after about 5
seconds.
LCD display starts and sets
the language.
The factory setting is medium
proportional pressure curve,
please select the control mode
according to the system
application.
017016
Before starting the electric pump, make sure the system is full of
liquid, air has been completely removed, and the inlet of the electric
pump must reach the minimum inlet pressure.
The electric pump is vented through the system, which must be
vented at the highest point. The air in the electric pump can be noisy,
which will disappear after a few minutes of operation.
6.Initial startup and operation
6.1 Before start
6.2 Evacuate the pump
6.3 Start-up products
Warning

018
Press Open the "Home" menu
019
6.4.3 "Home" 6.4.4 "Status"
6.4.5 "Settings"
Index
"Low flow indication"
The pump may experience low flow due to, for example, closed
valves.In the case of flow below 3m3/h, it will be displayed in the
"Home" menu due to the large measurement error of the pump's
algorithm. The speed is below the low flow indication indicating that
the pump is still running. When the flow is high enough for the pump
to measure, the "home" display will return to normal.
"Home"
This menu provides the following functions
- "Control Mode"
- "Set point"
- "Estimated Flow"
- "Head"
Index
"Home">"Status"
Press and turn the knob clockwise to enter the "Status"
This menu provides the following functions
- "Running Status"
- "Performance Parameter"
- "Warnings and Alarms"
Index
"Home">"Status"
Press and turn the knob clockwise to enter the "Status"
This menu provides the following functions
- "Running mode" - "Default set"
- "Control Mode" - "LCD off time"
- "Language set"

021020
Operation mode Language setting
Index
Control mode
"Home">"Settings">"Operation mode"
This menu provides the following functions
- "Normal"
- "Stop"
- "Min speed"
- "Max speed"
Index
"Home">"Set">Language setting
Restore default settings
LCD off time
"Home">"Assist">Default set
"Home">"Assist">LCD off time
This menu allows you to return to the default factory
setting, which sets the LCD off time to 60s.
This menu provides the following functions
- "中文"
- "English"
This menu allows you to return to the default factory
setting, which sets the proportional pressure of the
control mode to "Medium".
This menu provides the following functions
- "Proportional pressure" -"Constant speed"
- "Constant pressure"
Index
"Home">"Status">"Control mode"
Prerss and turn the knob clockwise to enter the "Status"

023
022
6.4.6 "Assisst"
Index
"Home">"Assist"
Status
None displayed
Power on
Fault
Screen off Power is off. Water
pump is not running.
Power on
Power on (pump running)
Alarm (pump stopped
working)
Green icon +Power on
Green icon +Running
Red icon +Fault
Instructions Reason
Date,time set
Control mode instruction
Assisted fault advice
"Home">"Assist">Date,time set
This menu enables date and time setting.
"Home">"Assist">Control mode instruction
This menu describes the characteristics
of the control mode
"Home">"Help">Assisted fault advice
This menu gives instructions and
corrective actions for pump failures.
This menu provides the following functions
- "Date,time set" - "Assisted fault advice"
- "Control mode instruction" - "Version"
7.Troubleshooting table
7.1 Operation Status
Electric shock
Pressurization system
Death or more serious personal injury
The power must be disconnected for at least 3 minutes before any
operation is performed on the product.
Mild or moderate personal injury
Before disassembling the pump, drain the system or close the isolation
valves at both ends of the pump. The pumped liquid can be hot and
under high pressure.
Warning
Attention
Running

025
024
Voltage 1x230V±10%,50/60Hz,PE
The pump does not require external
motor protection.
IPX4D
F
Max 95%
0~+40℃
TF110(EN60335-2-51)
2~+110℃
1.0MPa
PN10:1.2MPa
Motor protection
Protection grade
Insulation class
Relative humidity
Max. ambient
temperature
Temperature
environment
Liquid temperature
System pressure
Pumps can withstand
the test pressure of EN
60335-2-51
Inlet pressure
Surface temperature The maximum. surface temperature
is not higher than 125°C
Liquid temperature
75℃
95℃
110℃
Min inlet pressure
0.01Mpa
0.05Mpa
0.1MPa
8.Technical Data
The actual inlet pressure plus the closing pressure of the pump should
always be lower than the maximum system pressure allowed by the pump.
Attention
The minimum relative inlet pressure applies to pumps installed at sea
level up to 300 m. For altitudes above 300 m, the required relative inlet
pressure must be increased by 0.01 bar for every 100 m of altitude.
Attention
Auto reset
& restart
Alarm Codes Fault Exclusion method
7.2 Fault Cause and Finding
F0
F1
F2
F3
F4
F5
F6
F7
F8
F9
F10
F11
F12
F13
F14
-
YES
YES
YES
YES
-
-
YES
YES
-
-
-
-
YES
YES
EEPROM failure
Busbar overvoltage
fault
Busbar undervoltage
fault
Overcurrent
Overheating
Stalled
Phase loss
Flux linkage out of
control
PFC over-current
Input frequency fault
Input AC overvoltage
Input AC undervoltage
Communication failure
PFC overvoltage
PFC undervoltage
Contact the after-sales
department
Contact the after-sales
department
Contact the after-sales
department
Check whether the input voltage
frequency is 50Hz±3Hz,
or 60Hz±3Hz.
Check if the input voltage
is too high.
Check if the input voltage
is too low.
Contact factory for repair.
The alarm is automatically
cleared within 30s, confirm
whether the fault still exists.
The alarm is automatically
cleared within 30s, confirm
whether the fault still exists.
The alarm is automatically
cleared within 30s, confirm
whether the fault still exists.
The alarm is automatically
cleared within 30s, confirm
whether the fault still exists.
The alarm is automatically
cleared within 30s, confirm
whether the fault still exists.
The alarm is automatically
cleared within 30s, confirm
whether the fault still exists.
The alarm is automatically
cleared within 30s, confirm
whether the fault still exists.
Clean the pump and remove any
foreign objects or impurities that
prevent the pump from rotating.

026
11.Warranty Terms
9.Dimension 10.Maintenance
After 2000 hours of normal use, the electric pump should be repaired and
maintained according to the following steps:
⑴Disassembly: Check whether there are knots or foreign objects inside
the motor, and clean it up in time if there is.
⑵Air tightness test: After disassembling the machine to repair or replace
various seals, the water (air) pressure test must be carried out on the pump.
The test pressure is 0.2Mpa (megapascal), and there should be no leakage
and sweating for 3 minutes.
⑶When the temperature is below 4℃, anti-freeze work should be done
to avoid freezing and cracking the pump body.
⑷If the electric pump is not used for a long time, the pipeline should be
removed, the water accumulated in the pump should be drained, the main
parts should be scrubbed clean, and rust-proof treatment should be carried
out. Place the pump in a dry and ventilated place and keep it properly.
Pump type Dimensions
GEM32-120F
GEM40-80F
GEM40-100F
GEM40-120F
GEM40-150F
GEM40-180F
GEM50-40F
GEM50-60F
GEM50-80F
GEM50-100F
GEM50-120F
GEM50-150F
GEM50-180F
GEM65-40F
GEM65-60F
GEM65-80F
GEM65-100F
GEM65-120F
GEM65-150F
GEM80-40F
GEM80-60F
GEM80-80F
GEM80-100F
GEM80-120F
GEM100-40F
GEM100-60F
GEM100-80F
GEM100-100F
GEM100-120F
L
266
266
266
281
281
281
276
276
276
296
296
296
296
326
326
326
326
326
326
336
336
336
336
336
381
381
381
381
381
220
220
220
250
250
250
240
240
240
280
280
280
280
340
340
340
340
340
340
360
360
360
360
360
450
450
450
450
450
110
110
110
125
125
125
120
120
120
140
140
140
140
170
170
170
170
170
170
180
180
180
180
180
225
225
225
225
225
226
226
226
226
226
226
226
226
226
226
226
226
226
226
226
226
226
226
226
226
226
226
226
226
226
226
226
226
226
113
113
113
113
113
113
113
113
113
113
113
113
113
113
113
113
113
113
113
113
113
113
113
113
113
113
113
113
113
212
212
212
212
212
212
248
248
248
248
248
248
248
266
266
266
266
266
266
326
326
326
326
326
356
356
356
356
356
379
382
382
382
382
382
387
387
387
389
389
389
389
399
399
399
399
399
399
426
426
426
426
426
446
446
446
446
446
312
312
312
312
312
312
312
312
312
312
312
312
312
320
320
320
320
320
320
326
326
326
326
326
338
338
338
338
338
242
242
242
242
242
242
242
242
242
242
242
242
242
250
250
250
250
250
250
256
256
256
256
256
268
268
268
268
268
79
79
79
79
79
79
93
93
93
93
93
93
93
90
90
90
90
90
90
111
111
111
111
111
116
116
116
116
116
32
40
40
40
40
40
50
50
50
50
50
50
50
65
65
65
65
65
65
80
80
80
80
80
100
100
100
100
100
76
84
84
84
84
84
102
102
102
102
102
102
102
119
119
119
119
119
119
128
128
128
128
128
170
170
170
170
170
100
110
110
110
110
110
125
125
125
125
125
125
125
145
145
145
145
145
145
160
160
160
160
160
170
170
170
170
170
140
150
150
150
150
150
164
164
164
164
164
164
164
185
185
185
185
185
185
200
200
200
200
200
220
220
220
220
220
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
L1 L2 B B1 B2 H H1 H2 H3 D1 D2 D3 D4 D5
The warranty period of the GEM series canned pump is six months from
the date of purchase. During the warranty period, the company will provide
free maintenance services for failures that occur under normal use conditions
as required by the instruction manual. If the fault is caused by the following
conditions, the company needs to carry out paid repairs:
⑴Failure caused by natural disasters or human factors.
⑵Failure caused by special use environment.
⑶Fault caused by incorrect wiring or abnormal power supply.
⑷Identified by our technicians as a failure caused by abnormal operation
or improper use.
027