Grainfather G Series User manual

GSERIES
GC2 INSTRUCTION MANUAL
CHEERS, NICE
TO MEET YOU

HI, WANT
TO CHILL?
GSERIES
02

03
SAFETY INFORMATION
1. When transporting, keep level and li from the base.
2. Never tip the unit on its side or upside down.
This will void the warranty as it will damage
the electronics.
3. Always operate on a at surface in a well-ventilated
environment.
4. WARNING: Keep ventilation openings, in the
appliance enclosure or in the built-in structure,
clear of obstruction.
5. Keep the sides of the unit where the vents are
located, at least 20cm (7.9”) clear of any objects
as it requires uninterrupted airow to operate.
6. Avoid geing any liquid on the control touch panel.
7. Use food grade propylene glycol. Seek glycol
manufacturers specications for more information.
8. Do not store explosive substances such as
aerosol cans with a ammable propellant on
or in this appliance.
9. WARNING: Do not use mechanical devices or other
means to accelerate the defrosting process, other
than those recommended by the manufacturer.
10. WARNING: Do not damage the refrigerant circuit.
11. WARNING: When positioning the appliance,
ensure the supply cord is not trapped or damaged.
12. WARNING: Do not locate multiple portable
socket-outlets or portable power supplies at
the rear of the appliance.
13. CAUTION: Risk of Electric Shock. If the
cord or plug becomes damaged, replace
only with a cord and plug of the same type.
14. CAUTION: Avoid any act of moving and
handling of the chiller/refrigerator/freezer
that may cause damage to the refrigerant
tubing or increase the risk of a leak.
15. This appliance is intended to be used in
household and similar applications.
CAUTION
Risk of Fire or Explosion. Failure
to follow this safety information
can cause a re hazard.
THANK YOU FOR CHOOSING
THE GRAINFATHER GC2
Get started by following these instructions on how to assemble and use your GC2.
We recommend reading the following safety information before use.
THE FOLLOWING STATEMENTS APPLIES
TO GRAINFATHER PRODUCTS SOLD IN
AUSTRALIA AND NEW ZEALAND:
•The appliance is not to be used by persons
(including children) with reduced physical,
sensory, or mental capabilities, or lack of
experience and knowledge, unless they
have been given supervision or instruction.
•Children should be supervised not to play
with the appliance.
THE FOLLOWING STATEMENTS APPLIES
TO GRAINFATHER PRODUCTS SOLD IN
EUROPE AND UNITED KINGDOM:
•This appliance can be used by children
aged from 8 years and above and persons
with reduced physical, sensory or mental
capabilities or lack of experience and
knowledge if they have been given
supervision or instruction concerning use of
the appliance in a safe way and understand
the hazards involved. Children shall not play
with the appliance.
•Cleaning and user maintenance shall not be
made by children without supervision.
NOTE: Further to the safeguards listed
above, we do not recommend the use of this
product by children. Not following the safety
information above could result in serious
injuries and may void your warranty.

GSERIES
04
HOW DOES
A GLYCOL
CHILLER WORK?

HOW DOES
A GLYCOL
CHILLER WORK?
Your new Grainfather
GC2 Glycol Chiller is a
powerful fermentation tool
that provides both cooling
and heating power to your
fermenterto ensure your
fermentation stays at the
ideal temperature with a
high level of accuracy.
TheGC2 cools a reservoir of glycol solution
and uses a pump to deliver cold glycol when
your fermenter’s controller requests,cooling
your fermentation.Italso provides power
to a 30W heater in your GF30 Conical
Fermenter, or the heater included with
your GCA Glycol Chiller Adapter.These
elements combined ensure that your
fermentationis consistently maintained at
the desired temperature.In ideal conditions,
it’s possible to cool a fermenter to between
4 - 6°C (39 - 43°F) or heat it to 10°C (18°F)
above ambient temperature.You can easily
manage the fermentation temperature
through the fermenter controller or connect
through the Grainfather App.
GRAINFATHER GC2
Grainfather GSERIES
Fermenters
Grainfather S SERIES
Fermenters
Most other fermenters
(up to 60L fermentation)
Grainfather GCA
(kit contents not shown)
Choose to connect your glycol chiller to
a Grainfather GSERIES Fermenter, like
the GF30 Conical Fermenter, or almost
any other fermenter when used with the
Grainfather GCA Glycol Chiller Adapter,
sold separately online or at your local
retailer. The GC2 can power up to two
fermenters simultaneously.
NOTE: See diagram to right.
GRAINFATHER GC2
GLYCOL CHILLER
COMPATIBILITY
05

2. Glycol liquid
ller cap
6. Wall outlet
power cord
(with plug based on
country of sale*)
1. Control panel
NOTE: The full spare parts list for the GC2 is available online: help.grainfather.com
*Items included with GC2 may vary by market.
ANATOMY
DIAGRAM
& PARTS LIST
5. 3L (0.8 US Gal)
propylene glycol
(packaged separately*)
4. Glycol funnel
10. Power socket
3. Fermenter
power sockets
7. Glycol outlets
8. Glycol inlets
9. Inline glycol liquid
lter assembly
16. Priming hose
06
12. Cooling hose (inlet)
13. Seals 14. Coupler set
15. Cooling hose (outlet)
11. G SERIES Conical
Fermenter Cooling
Connection Kit
(packaged separately*)

07
PRIMING YOUR
GC2 PUMP
Make sure the GC2 has been standing upright for 24 hours before turning it on.
Before the rst use of this product, you must prime the pump by carefully
following the instructions below.
1. Before plugging in the GC2, ensure that the glycol lter
cap on the back of the unit has been screwed on tightly.
2. Open the glycol liquid ller cap (2) located on the top of
the GC2. Using the glycol funnel (4), pour 2L (0.53 US Gal)
of water into the tank. Close the cap and let the chiller rest
for a minimum of 5 minutes.
3. Connect the priming hose (16) to the glycol
mixture outlet connection (7) (with blue cap)
under number 1. Then, open the cap and insert
the free end of the hose into the opening of the
glycol tank.
2
IMPORTANT NOTE
Complete this step before rst time use only.
Water

08
5. Aach one end of the power cord (6) to the
power socket (10) on the back of the GC2 and plug
the other end into a suitable wall socket. Press the
power buon to turn on.
6. Press and hold the ‘ ’ buon for 3 seconds
to enter pump override mode. The ‘SET’ buon
should be ashing to indicate the chiller is in
pump override mode. This mode deactivates the
low glycol level warning (if present) and allows
the pump to run without a cooling signal from a
Grainfather GSERIES Fermenter.
7. Press the number ‘1’ buon to start the pump, the
buon will begin to ash and the pump will start to
run. If this does not happen, check that the chiller is
in pump override mode (step 6).
8. Leave the pump to run for 2 minutes, then press
the number ‘1’ buon again to stop the pump.
9. Pour the prepared 1L (0.26 US Gal) of propylene
glycol into the tank using the glycol funnel (4).
Aer one minute from when the pump has
stopped, press the number ‘1’ buon to start the
pump again. You should start to see bubbles and
liquid owing through the hose (16) from the outlet
connection to the opening of the glycol tank.
10. Repeat the pump cycle with the pump on for
two minutes, then o for one minute until only
liquid (no visible bubbles) is owing through the
hose. Then, press the number 1 buon to stop the
pump and close the port.
11. Turn o the GC2 and then disconnect the
priming hose and close the cap.
1
4. Measure out 1L (0.26 US Gal) of food-safe
propylene glycol (5) into a jug.
5

09
CONNECTING
TO A G SERIES
FERMENTER
If you’re using a GSERIES
Fermenter, use the instructions
below to set up your GC2 in
preparation to chill. If you’re using
a GCA, please go to page 10.
PREPARE COOLING
CONNECTIONS
A Cooling Connection Kit (11) is required to use
your GC2. This consists of brass couplers (14), seals
(13), and hoses (12, 15) and connects your GC2 to
a GSERIES Conical Fermenter. Firstly, connect the
couplers to the fermenter:
1. Place a white seal inside the threaded hole on the
side of the fermenter.
2. Next, take the threaded section of the coupler and
screw it into the same side of the fermenter where
you placed the seal. Make sure it’s screwed in
tightly. Use a spanner, if necessary, but do not over
tighten.
3. Connect the other end of the coupler to the
section you just used by pushing the spring-loaded
sleeve back and sliding it over.
4. Repeat these steps on the other side of the fermenter.
NOTE: It is possible to cut the hoses shorter if necessary.
Place the chiller and fermenter in their nal place,
carefully measure and cut the hoses accordingly.

10
1. Make sure the GC2 is turned o.
2. On the back panel of the chiller, locate the
glycol outlet connections (7). Connect the
blue hose to the outlet connection of channel
number 1. This hose then connects to the
coupler on the fermenter that is aached in
the lowest position.
3. The glycol return connection is where the
glycol is returned to the chiller. The return
connections have a red silicone cap connected
to them and are located below the outlet
connections. Connect the red hose to the return
connection of channel number 1. This hose then
connects to the coupler on the fermenter that is
aached in the highest position.
NOTE: Make sure that your glycol outlet
connection (blue hose) is connected to the
coupler in the lowest position on the fermenter,
and the glycol return connection (red hose) is
connected to the coupler in the highest position
on the fermenter. The glycol needs to be
pumped into the cooling sleeve from the boom
to ensure that the sleeve is ooded with glycol.
CONNECTING A
FERMENTER USING
THE GCA GLYCOL
CHILLER ADAPTER
To connect your GCA to the GC2, please use
the instructions provided with your GCA to
connect or nd the instructions online here:
hps://bit.ly/gc2-gca
COUPLING THE GC2
TO YOUR FERMENTER
Blue
hose
Red
hose
NOTE: The GC2 can connect up to two fermenters to the
chiller. The outlet connections from the chiller have a blue
silicone cap connected to them and are located above the
return connections.
The buons on the front of the chiller labelled 1 and 2 match
up to the connections on the back labelled accordingly.