Refco Gobi II User manual

Instruction manual Gobi II English
1
English Gobi II
Condensate Pump
3004145

English Instruction manual Gobi II
2
Introduction 02
General information 02
Important safety notice 02
Technical data 03
Product description 04
Transport and storage 06
Commissioning 06
Maintenance 12
Return and disposal 13
Troubleshooting 14
Replacement parts 15
Introduction
Thank you for purchasing our all-new Gobi II condensate pump.
The Gobi II has been completely redesigned retaining all the good
features you like and upgrading everything else. Its digital water
sensor, universal voltage and user confi gurable fl ow ensure it is
the strongest, quietest under A/C mounted condensate pump on
the market today.
General information
REFCO products have been specially designed and manufactured
for use by trained refrigeration and air-conditioning service en-
gineers only. REFCO explicitly states that their products must only
be sold to professionally trained service engineers.
These operating instructions contain important information about
handling the Gobi II. Safe operation of the device requires adheren-
ce to all safety instructions and operating guidelines.
- The local safety regulations applicable to the area in which the
Gobi II is being used should also be adhered to, along with gene-
ral safety guidelines.
- The operating instructions are part of the product and should
be stored in close proximity to the Gobi II where they should be
readily accessible to qualifi ed personnel at all times.
- The qualifi ed personnel must have carefully read and under-
stood the operating instructions prior to operating the device.
- The manufacturer shall not be liable for any damage whatsoever
arising through improper use, failure to comply with these ope-
rating instructions, assignment of inadequately qualifi ed person-
nel, or unauthorised modifi cation of the Gobi II.
- The general terms and conditions as set out in the sales docu-
mentation shall apply.
Symbols and writing standards
WARNING/CAUTION
An appropriate safety instruction should be followed or
caution to a potential hazard exists.
DANGEROUS VOLTAGE
To indicate hazards arising from dangerous voltages.
Please read all safety and installation instructions
completely before commencing.
Waste of Electrical and Electronic Equipment
(WEEE) Do not throw the pump in domestic waste
CE compliant
Certifi cation mark that indicates conformity with health,
s afety and environmental protection standard for products
RoHS compilant
Regulatory Compliance Mark (RCM)
Compliant with the electrical safety requirements of
Australia and New Zealand
Safety instructions
Please read all safety and installation instructions
completely before commencing.
To prevent any risk only certifi ed and appropriately
trained staff with suffi cient technical training and tools shall install
this product. Product installation and electrical connections both
require professional training for safe installation and correct product
operation.
This appliance is not intended for use by persons (including children)
with reduced physical, sensory or mental capabilities, or lack of ex-
perience and knowledge, unless they have been given supervision
or instruction concerning use of the appliance by a person respon-
sible for their safety.
Children should be supervised to ensure that they do not play with
the appliance.
Save these instructions for further reference.
For indoor use only. To identify electrical equipment
designed primarly for indoor use. Not submersible.
The Gobi II condensate pump is to be installed in accordance with
local and regional electrical codes.
WARNING: Disconnect all electrical power before starting
installation, maintenance, or service work.
WARNING: Disconnect electrical power before removing
and checking internal fuse.
CAUTION: Do not install the REFCO condensate pump if
there are any signs of damage.
WARNING: The supplied power and alarm cords must be
checked for signs of damage before installation and perio-
dically thereafter. If a cord is damaged, it must be repla-
ced by the correct part supplied either by Refco or by an
approved service agent
The Gobi II combined power/alarm cable lead-out is
non-replaceable. lf this is damaged the entire pump must
be replaced.
WARNING: The REFCO condensate pump cables should
not be cut, and should be routed so that they cannot be
damaged during and after installation.
CAUTION: All tubing connections are to be secured in place on the
barb connections using self-locking cable tie-wraps.
(WEEE)
Contents

Instruction manual Gobi II English
3
DO NOT use tools to connect the tubing.
DO NOT operate this product in ambient temperatures below
5 °C (41 °F).
DO NOT operate with incoming water above a temperature of
40 °C (104 °F).
CAUTION: Do not allow any chemicals to come in contact with
this condensate pump. Please remove the pump and water sensor
before using any coil cleaning solutions and other chemicals. Flush
the evaporator coils with water before reinstalling the condensate
pump and water sensor.
Technical data
Maximum fl ow rate: 42 l/Hr. (11 GPH)
Maximum suction: 3 m (9.80 ft.) self priming
Maximum head: 20 m (65.60 ft.)
Maximum horizontal run: 100 m (330 ft.) at 0 head and 0 suction
Sound: 19dBA at 1 m DIN EN ISO 3741:2011 / DIN EN ISO 3744:2010
Voltage: 100 ~ 240 VAC 50/60 Hz auto sensing universal power input
Power: 8 W during maximum operation at 110 V
Alarm relay: 10 Amps contacts with integrated replaceable 10A fuse 5 × 20 mm
Weight: 1‘100 g (2.45 lb.)
Discharge star tube: 6.25 mm I.D. (1/4“) × 1 m (3.3 ft.)
Packaging dimensions: 250 x 340 x 54 mm (9.9 x 13.4 x 2.1 inches)
Bulk pack dimensions: 10 Pcs dimensions are 590 x 265 x 365 mm (23.2 x 10.4 x 14.4 inches)
Color: RAL #9003 white
Protection: Fully potted, IP-44
Operation temp: Ambient 5°C to 40°C (41°F to 104°F) / Water 5°C to 40°C (41°F to 104°F)
Compliance:
Capacity
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44
0 1 2 3 4 5 6 7 8 9 10
Capacity l/Hr
Capacity US G/Hr
Vertical lift / head pressure m
20
18
16
14
12
10
8
6
4
2
0
Gobi II & Combi at full power
60
50
40
30
20
10
0
Vertical lift / head pressure ft.
Ensure the evaporator coils are free of chemicals before reinstalla-
tion of the REFCO Gobi II pump.
CAUTION: This appliance incorporates an earth connection for
functional purposes only.

English Instruction manual Gobi II
4
Product description
Provided accessories
Pump body
Factory-installed fuse
Replaceable fi lter
Digital sensor
Water tray
DIP-switches
USB port
Diagnostic LED
Wall back plate
Cover
1
2
3
4
5
6
7
8
9
10
10
1
6
7
8
9
2 3 4 5
Dimensions pump
53mm
53mm
286mm
Screws, 3 pcs. Star tube and Stop-Siphon device Alarm relay HR 10A fuse /
Part No. 3004050
Screw anchors, 3 pcs
1.54 inches
1.6 inches
1.6 inches
15mm
1.89 inches 1.54 inches5.47 inches 3.43 inches
2.09 iches
2.09 inches
11.26 inches
1.89 inches
1.54 inches
1.6 inches
1.6 inches
15mm
1.89 inches 1.54 inches5.47 inches 3.43 inches
2.09 iches
2.09 inches
11.26 inches
1.89 inches
1.54 inches
1.6 inches
1.6 inches
15mm
1.89 inches 1.54 inches5.47 inches 3.43 inches
2.09 iches
2.09 inches
11.26 inches
1.89 inches
1.54 inches
1.6 inches
1.6 inches
15mm
1.89 inches 1.54 inches5.47 inches 3.43 inches
2.09 iches
2.09 inches
11.26 inches
1.89 inches
1.54 inches
1.6 inches
1.6 inches
15mm
1.89 inches 1.54 inches5.47 inches 3.43 inches
2.09 iches
2.09 inches
11.26 inches
1.89 inches
Cable ties, 3 pcs.
1412
15 16 17
1311
Dimensions pump
Power cable Type: SVT 18AWG*3C
Cable +H05VV-F 3G 0.75mm²
Part No. 3004139
1.54 inches
1.6 inches
1.6 inches
15mm
1.89 inches 1.54 inches5.47 inches 3.43 inches
2.09 iches
2.09 inches
11.26 inches
1.89 inches
Alarm cable
Part No. 3004140
1.54 inches
1.6 inches
1.6 inches
15mm
1.89 inches 1.54 inches5.47 inches 3.43 inches
2.09 iches
2.09 inches
11.26 inches
1.89 inches

Instruction manual Gobi II English
5
LED alarm relay indications
LED indications in operation
No power Pump is miswired or no incoming voltage. Problem
with A/C system or alarm is miswired.
Start up LED sequence
(default mode)
Alternating red/ green fl ashes 5x only then stops
and goes to standby mode.
Start up LED sequence
(peripheral mode)
Alternating red/ green fl ashes 5x only then stops
and goes to standby mode.
Standby mode –
waiting for water Blinking green continuously.
Pumping water Solid green. Running in low, med low, med high, or
high power confi g. normal operation.
High water level mode Blinking red. Running above high water level.
Alarm mode –
relay activated
Solid red. Pump cannot keep up with water input.
To prevent water overfl ow break power to A/C until
water level reduces.
Reconfi gure code Pump has had 3 extra long run cycles, reconfi gure
dip- switches for more capacity.
Or
❋ Alarm relay operation is user confi gurable see page 9 ❋
Start up sequence
Pump status Condensate level Default operation Peripheral Mode
Not powered N/A
Powered Below alarm level
Powered Alarm-activated
(normally closed) (normally open)
LED alarm relay operation table
NC COM
NC COM
NC COM
NC COM
NC COM NC COM
NC COM
NC COM
NC COM
NC COM
NC COM NC COM
NC COM
NC COM
NC COM
NC COM
NC COM NC COM

English Instruction manual Gobi II
6
ON
1 2
low
up to 18K Btu/h
(5.3kW)
medium low
up to 42K Btu/h
(12kW)
medium high
up to 72K Btu/h
(21.1kW)
high
up to 120K Btu/h
(35kW)
ON
1 2
ON
1 2
ON
1 2
ON
1 2 Ratings for air conditioning units
Factory
default
The rating of the condensate pump has to
be adjusted according to the power of the
conditioning unit.
Transport and storage
Transport
Inspect the GOBI II for any potential transportation damage. Any obvious damage should be reported to the vendor immediately.
Storage
- Storage temperature: -20 °C to +60 °C
- Humidity: 0 to 90% relative humidity (no condensation)
Commissioning
Application
Tools needed
PH#2
5.5mm
7/32”
The Gobi II pump can be mounted on the right or left side of an evaporator unit.

Instruction manual Gobi II English
7
CAUTION: Cables and pipes may be in the wall cavity.
Be careful while drilling anchor holes. 9
1
5.5mm / 7/32”
2
x 3
14
3
4
x 3
PH#2
11 9

English Instruction manual Gobi II
8
12 15 x 1
1/4” I.D. (6mm)
Field supplied
to drain
5
6
WARNING:
Disconnect all electrical power before starting
installation, maintenance, or service work.
Installations must only be carried out by
qualifi ed personnel
Plug connections have to be completely dry.
INPUT POWER:
100-240V, 50/60Hz, 2.5A (Max)
The alarm relay fuse must be rated for the specifi c
application and of the HRC type, 5 x 20mm 250 VAC,
10A (Max)
This appliance incorporates an earth connection for
functional purposes only
16
17

Instruction manual Gobi II English
9
3
Evaporator units (indoor)
VRF / VRV condenser unit (outdoor)
ity power
ystem is installed
(drawing # 2)
Power up LED flash sequence
Pump status Condensate level default
opera on
Unpowered
(or pump failure)
n/a
Powered Below alarm level
Powered vated
Alarm relay oper table
When indoor evaporator unit is powered from the outdoor condenser unit
(drawing # 1)
Pump
for indoor
use only
Replaceable fuse 10A
Condenser unit (outdoor)
Data (communica ons)
Earth (ground)
Neutral (live 2)
100-240vac (live 1)
Evaporator unit
(indoor)
ity power
VIOLET GREY BROWN BLUE
Alarm relay
NC COM L N
N
L
3
3
N
L
N
L
BROWN
BLUE
Alarm relay
N
3
N
Alarm
safety
circuit
Replaceable fuse 10A
N
Neutral (live 2)
100-240vac (live 1)
Earth (ground)
Data
L
L
L
N L
Below are examples of how REFCO pumps can be installed. For reference only.
Pump
for indoor
use only
Conne n
made inside
the indoor
evaporator
VIOLET GREY
NC COM
NC COM
NC COM
NC COM
COM
NC
NC COM
Peripheral
mode
1. Unplug pump
2. Move dip-switch posi ns to
3. Plug pump in
4. Wait for one green LED blink
5. Move dip-switch po ons to
6. Wait for one red LED blink
7. Reset dip-switch posi ns to
8. Wait for one green LED blink
9. Unplug pump
10.Set the dip-switches back to the desired capacity configuon. (Low, medium-low, medium-high, high)
11. Plug pump in and check that power up LED sequence matches the desired alarm relay op on
12. Done!
To reset alarm relay to default o on, repeat steps 1 thru 11
To change alarm relay opera
Or
*
NC COM
NC COM
NC COM
Can be used to an external device
(e.g. an audible or visible alert) when the
condensate is above the alarm level
Can be used to an external device
(e.g. the Evaporator unit) when the
condensate is above the alarm level.
Default Mode
The drawings on this page show Default
Mode examples.
Peripheral Mode

English Instruction manual Gobi II
10
When outdoor condenser is powered from the indoor evaporator unit
(drawing # 3)
Pump
for indoor
use only
Replaceable fuse 10A
Condenser unit (outdoor)
Data (communica ons)
Earth (ground)
Neutral (live 2)
100-240vac (live 1)
ity power
Alarm Relay
Below are examples of how REFCO pumps can be installed. For reference only.
Condenser unit (outdoor)
Data line
Earth (ground)
Neutral (live 2)
100-240vac (live 1)
Evaporator unit (indoor)
Power only with no alarm circuit
(drawing # 4)
Not recommended: Water damage can occur if
drain line becomes kinked, pinched or plugged.
Water damage can occur if pump fails.
Pump (for indoor use only)
Alarm cable not
used
made inside
the indoor
evaporator
Evaporator (Indoor)
VIOLET GREY BROWN BLUE
NC COM
1
3
1
L NC N COM
N L L N 3 3
N
L
1
2
3
2
2
Power up LED flash sequence
Pump status Condensate level default
opera on
Unpowered
(or pump failure)
n/a
Powered Below alarm level
Powered vated
Alarm relay oper table
NC COM
NC COM
NC COM
Peripheral
mode
1. Unplug pump
2. Move dip-switch posi ns to
3. Plug pump in
4. Wait for one green LED blink
5. Move dip-switch po ons to
6. Wait for one red LED blink
7. Reset dip-switch posi ns to
8. Wait for one green LED blink
9. Unplug pump
10.Set the dip-switches back to the desired capacity configuon. (Low, medium-low, medium-high, high)
11. Plug pump in and check that power up LED sequence matches the desired alarm relay op on
12. Done!
To reset alarm relay to default o on, repeat steps 1 thru 11
To change alarm relay opera
Or
*
NC COM
NC COM
NC COM
Default Mode
The drawings on this page show Default
Mode examples.
Can be used to an external device
(e.g. the Evaporator unit) when the
condensate is above the alarm level.
Peripheral Mode
Can be used to an external device
(e.g. an audible or visible alert) when the
condensate is above the alarm level

Instruction manual Gobi II English
11
1
2
3
8
7
1
2
3
15
5
17
16

English Instruction manual Gobi II
12
9
5
10
10
Water filter maintenance
Regular cleaning / replacement of the Gobi II water filter will help to prolong the life of the pump. The sole purpose of the water filter is
to prevent foreign debris from entering the pump itself. The time period between filter service can only be determined from the specific
environment in which the pump is installed. We recommend cleaning or replacing the water filter a minimum of every 12 months.
However, when installed in environments with high dust, smoke, cooking oils or the possibility of algae growth it is recommended to
clean or replace the filter every 3 months.
To clean / replace the water filter, simply remove it from the Gobi II suction barb and thoroughly wash with cold water and replace on
the pump suction barb.
Maintenance

Instruction manual Gobi II English
13
The alarm relay fuse must be rated for the specifi c applica-
tion and of the HRC type, 5 x 20 mm 250VAC, 10A (MAX)
Installations must only be carried out by qualifi ed
personnel
At the end of useful life of the condensate pump send the product to the separate collection for electric and electronic devices.
(According to local regulations)
Return and disposal
13
Change filter
Change alarm fuse
WARNING:
Disconnect all electrical power before starting
installation, maintenance, or service work.

English Instruction manual Gobi II
14
Fault Correction
No LED lights Check for incoming voltage. The blue and brown wires are for power.
Pump runs constantly Check filter placement. The water filter should not touch the digital sensor.
Check the digital sensor for dirt, mold or debris. Clean with water.
Check all tubing connections and ensure they are firmly pressed on the connection barbs and secured
using cable ties. Check the entire drain line for clogs, kinks or the tube being pinched.
If the pump is running constantly and water is flowing from the end of the drain line then you need to
change the dip-switch power settings to increase the pump’s capacity. The system has too much water
or lift for the pump’s current power setting.
A/C unit is off Check the pump LED status light. If it’s solid red (not blinking) AND the alarm wiring is connected pro-
perly, then the pump alarm relay is intentionally stopping the A/C unit from running. This prevents water
overflow and possible water damage. This is the correct function of a condensate pump alarm relay.
If the alarm wiring has been used, check the HRC alarm fuse for continuity using a multimeter and
replace it if necessary. Glass fuses can be inspected visually.
If the alarm wiring has been used, check that the pump is in Default Mode.
If the alarm wiring has been used and the wiring is correct, check the status LED; if it is OFF, with no LED
lights at all, then there is a fault either with the power main supply to the pump or with the pump itself.
During alarm status the pump itself will continue to run to decrease the water level even when the A/C
unit is not running. Once the water level is low enough, the pump will automatically reset the alarm
relay to re-connect power back to the A/C unit. Please note: Many outdoor A/C units have a 5 min. time
delay before they turn on the compressor and resume normal cooling operation.
Alarm is activated If the alarm is activated (LED is solid red), the pump has too much incoming water for it to keep up.
Once the water level gets too high on the digital sensor it will trip the alarm relay and stop power to the
A/C system. (Only if the alarm wiring is used). The drain line could be blocked, kinked or pinched. You
may have incorrect capacity settings on the pump relative to the capacity of the A/C unit and or a high
lift vertical run.
Water is dripping Check to ensure the alarm cable is correctly installed according to the appropriate wiring diagrams.
Please note: There are different diagrams according to different types of A/C systems.
If the alarm is not used and the drain line gets blocked, kinked or clogged, the pump can overflow. This
is why you should always use the alarm function.
Check all your hose connections. If you have a high head pressure (long vertical run), the water pressure
can blow a hose off its barb. This is why you should always use the factory supplied cable ties.
With Gobi II pump: Ensure the wall back plate, the water tray and the Gobi II pump body are all mounted
and installed level.
Pump is noisy Check the filter placement. If the water filter is touching the digital sensor, the digital sensor may
believe it is water and activate the pump causing it to run dry when it should not be running at all.
Clean the digital sensor and the filter with water.
Configure pump capacity correctly according to the A/C capacity and lift rise and run of the drain line.
(See dip-switch settings in installation instructions).
Slurping or gurgling Check for and correct a siphon in the drain line. (Review siphon specific instruction sheet). If the drain
line extends below the level of the pump, when the pump shuts down, the weight of the water remaining
in the drain line will create a siphon effect which will suck water away from the pump causing the pump
to start and run dry until reprimed with water. This can cause slurping and gurgling noises. Correctly
install your drain line to prevent a siphon from occurring.
LED lights flash Immediately on initial power-up the pumps will always have a LED start sequence 5x and then go into
standby (blinking green). This is normal operation. This LED start sequence is the only indication
of whether the alarm is currently configured for Default Mode or Peripheral Mode. The alarm relay is user
configurable and can be changed back and forth. (See wiring diagram instructions).
3 red & 3 green This is the pump reconfigure code. The pump is asking for help! If it has had 3 consecutive long run
LED flashes cycles where it went from standby mode all the way into alarm mode, it is asking to be re-configured for
more power as its current dip-switch power settings are too low for the incoming water flow, lift or both.
Give it more power by reconfiguring the dip-switch settings. This reconfigure code will only appear after
3 consecutive long run cycles that went into alarm mode.
Troubleshooting

Instruction manual Gobi II English
15
HSG-4065/4
Stop-Siphon Device, 4 pcs.
Part No 3004065
FUS-4050/10
Fuses 5x20 10A, 10 pcs.
Part No 3004050
PVC-TUBE
Plastic tube 6 mm (1⁄4”),
minimum 30 meters
Part No 4679160
Replacement parts and accessories
FIL-4064/4
Filter, 4 pcs.
Part No 3004064
KIT-4087
Star tube with Stop-Siphon device
Part No 3004087

English Instruction manual Gobi II
16
REFCO Manufacturing Ltd.
Industriestrasse 11
6285 Hitzkirch - Switzerland
Telefon [phone]
Telefax [phone]
[e-mail]
www.refco.ch
272719/3004149