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How do I program the control on the chiller?
Open programming data from the link on the left of this page and
select the model of chiller you are working on. The simplified
programming sheet is available here. You can also down load the full
programming sheet for this control, yet you will only need to alter
and save a few setting to control the chiller, all other parameters
are factory set.
If you require a new control, Alpine Chillers can supply a pre
programmed control, all parameters are pre set, simply fit the new
control, connect the power supply and probe and the control is ready
to operate the chiller.
What are the
fault codes for the Carel Control?
You can download the full parameter programming sheet from the
Programming Data Link on this site.
How do I
Wire the Carel Control?
The wiring diagram can be downloaded along with the Simplified
programming sheet found under programming the control on this web
site.
What is the recommended propylene glycol to water
ratio?
10% glycol in water solution has a freezing point of -3.5°c
20% glycol in water solution has a freezing point of -7.5°c
30% glycol in water solution has a freezing point of -13.5°c
40% glycol in water solution has a freezing point of -21.5°c
50% glycol in water solution has a freezing point of -34°c
60% glycol in water solution has a freezing point of -50°c
Note:
It is recommended that the glycol to water
ratio be 30% or higher and should be checked on a regular basis by
using a refractometer.
It is also good practice to alternate the
recirculation pumps (Dual pump model) every 2 months or when a
chiller service is carried out.
These chillers are not designed for ice bank
operation and should not be operated as an ice bank unless fitted
with an ice bank control.
All chillers are supplied standard with a
(static type coil) and can be modified to operate as an ice bank,
unless the chiller has been fitted with a (plate heat exchanger) as
a special order, in which case the chiller cannot be operated as an
ice bank.
What is the recommended refrigeration pipe sizing for
each chiller?
Selecting pipe sizes.
These pipe sizes are based on:
- Pipe run up to 30 mtrs
- R404a Refrigerant
- 35°c ambient temperature.
CHILLER
MODEL LIQUID SUCTION
UBAC2500
3/8” 5/8”
UBAC3000
3/8”
3/4”
AC3000 3/8” 3/4”
AC3000S 3/8” 3/4”
AC4000 1/2” 7/8”
AC4000S 1/2” 7/8”
AC5000
1/2”
7/8"
AC5000S 1/2” 7/8”
AC6000 1/2” 7/8”
AC6000S 1/2” 7/8”
What are the recommended condensing unit selections for the
chillers?
Selecting
a condensing unit.
Recommendations for selecting a condensing unit.
UBAC2500: 2100 -
2500 watts @ -5°c suction and 38°c ambient depending on application.
AC3000: 3000
watts @ -5°c suction and 38°c ambient.
AC4000: 4000
watts @ -5°c suction and 38°c ambient.
AC5000: 5100
watts @ -5°c suction and 38°c ambient.
This is a basic
guide only, all condensing unit selections should be made by a
qualified refrigeration technician, taking into account the specific
loads on the chiller and the ambient environment.
What should i adjust the superheat setting to on the expansion
valve?
Adjusting
TX valve super heat.
Due to the
nature of direct liquid contact on the refrigeration coil in the
chiller, super heat settings can differ from the standard (7k) text
book setting, in most cases it will be lower than 5k. Please take
care to set the super heat and avoid liquid flood back, this can
cause compressor damage !
Where can I find spare parts for the chillers?
Open the spare parts link on the left of the page, select the
model and and follow the link to a breakdown of spares available for
the chiller. You can click on the enquiry link on the bottom of the
page and email Alpine Chillers for a request for parts or
alternatively contact us direct with your enquiry.
For emergency after hour breakdowns most spares will be available
from your local refrigeration wholesaler.
Fault finding tips
These are some of the helpful hints to help deal with a fault.
Remember, only qualified technicians are allowed to repair
electrical and refrigeration faults! If in doubt call a technician.
Chiller not getting cold.
- Check the condensing unit is switched on and operating.
- Check the temp control is correctly set.
- Check that the solenoid is activating - slide coil up and down
shaft - if you here a "clicking" noise this means the solenoid is
activated.
- Check water/glycol level in chiller tank.
- Check that differential setting on control is correct.
Chiller getting too cold.
- Check that the temp on the chiller is set correctly.
- Check that the solenoid is deactivated.
- The most common cause of this fault is that the solenoid valve
is not seating properly (closing off) and letting refrigerant pass
through when the solenoid is deactivated. This can happen when
foreign objects get into the refrigeration system (such as dirt,
copper and brass swarf, thread lock or tape etc. These foreign
objects can get caught in the valve body and obstruct the valve seat
causing the refrigerant to pass through even when the valve is off.
A quick way to check for this fault is to hold the pipe on both
sides of the solenoid valve and if there is a noticeable
temperature difference it is most likely to be the fault. Turn
the refrigeration system off and call a technician.
Water tank is freezing over.
- Check that the temperature on control is not too low.
- Call technician to check glycol/water mixture.
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Stainless
Steel Chillers & Water Coolers
