ENG | CH | JP
User Manual
PSK DC-1200 Pump
& Skim-Sensor
Red Sea REEFERTM DC-Skimmer
3
ENG
User Manual
Smart – Efficient – Self-leveling
PSK DC-1200 Pump
& Skim-Sensor
Red Sea REEFERTM DC-Skimmer
4
Red Sea REEFERTM DC-Skimmer
5
ENG
Contents
Introduction .............................................................................................................6
Safety ....................................................................................................................... 7
Introduction to the self-leveling functionality of the REEFER DC Skimmers .....8
DC Skimmer Components ......................................................................................9
Installing the PSK-DC 1200 Skimmer pump and Skim-sensor .........................10
Connecting to the ReefRun Dual Controller (RRDC) ..........................................13
Operating the REEFER DC Skimmer .....................................................................15
Maintenance .........................................................................................................16
Warranty ................................................................................................................17
Red Sea REEFERTM DC-Skimmer
6
Introduction
Congratulations on your purchase of Red Sea’s REEFER DC Skimmer / Upgrade pack.
The smart ReefRun DC-Skimmer incorporates the variable intensity Sicce PSK DC-1200
skimmer pump together with Red Sea’s bespoke dual-action skim-sensor, that provides
a unique self-leveling functionality to prevent over-skimming and collection cup
overflow.
This manual covers the installation and operation of the PSK DC-1200 pump and self-
leveling sensor for the Reef Skimmers 300-600-900, and is in addition to the REEFER
Skimmer manual.
The PSK DC-1200 skimmer pump and self-levelling sensor can only be used when
connected to a ReefRun Dual controller that provides control of up to 2 ReefRun
compatible DC return pumps, DC skimmer or a combination of both. Read the manual
provided with the ReefRun Dual controller for full installation and operation instructions
for the controller.
The ReefRun Dual Controller is part of Red Sea’s suite of smart devices that are
operated via Wi-Fi by Red Sea’s ReefBeat® App, which needs to be installed on a
smart mobile device with internet connectivity.
Welcome to Red Sea’s smart reef-keeping.
The Red Sea Team
Red Sea REEFERTM DC-Skimmer
7
ENG
Safety
PLEASE READ AND FOLLOW ALL SAFETY INSTRUCTIONS
THIS DEVICE IS INTENDED FOR INDOOR USE ONLY.
DANGER: To avoid possible electric shock, special care should be taken
when handling a wet aquarium. For each of the following
situations, do not attempt repairs yourself; return the appliance
to an authorized service facility for service or discard the
appliance.
WARNING: To guard against injury, basic safety precautions should be
observed, including the following:
Do not operate any appliance if it has a damaged cord or plug, if it is
malfunctioning, or if it is dropped or damaged in any manner.
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.
The appliance is only to be used with the power supply unit provided
with the appliance. Close supervision is necessary when any appliance is
used by or near children.
To avoid injury, do not contact moving parts.
Always unplug an appliance from an outlet when not in use, before
putting on or taking off parts, and before cleaning. Never pull the cord
itself to remove the plug from the outlet. Grasp the plug and pull to
disconnect.
Do not use an appliance for anything other than its intended use.
The use of attachments not recommended or sold by the appliance
manufacturer may cause unsafe conditions.
Do not install or store the appliance where it will be exposed to the
weather or to temperatures below freezing point.
Make sure an appliance is securely installed before operating it.
Read and observe all the important notices on the appliance.
Note: A cord rated for less amperes or watts than the appliance rating
may overheat. Care should be taken to arrange the cord so that
it cannot be tripped over or pulled accidentally.
Do not use if cord is damaged. In case of need, do not attempt
to replace or repair yourself; return the appliance to an
authorized service facility for service or discard the appliance.
In case of need, do not attempt to replace yourself; return the
appliance to an authorized service facility for service or discard
the appliance.
Drip loop
SAVE THESE INSTRUCTIONS
Red Sea REEFERTM DC-Skimmer
8
Introduction to the self-leveling functionality of the REEFER DC Skimmers
Protein skimmers perform 2 important functions. The primary function is
to mechanically remove dissolved organic matter (proteins / bacteria)
from the aquarium water. The secondary, but not less important function
is to oxygenate the water through vigorous mixing of the water with
a continual supply of fresh air. Both functions are responsible for
maintaining water quality which can be monitored by measuring the
REDOX or ORP of the water.
Skimmers remove proteins from the water as they stick to the surface
of air bubbles that ascend the neck of the skimmer as a foam, and
thereafter settle in the collection cup as a liquid. The reaction chamber
of the REEFER Skimmers was designed together with the range of PSK
pumps to provide the necessary flow rates of air and water in an optimal
ratio and contact time to optimize the protein removal for different
aquarium volumes. The wetness of the foam in the skimmer neck is
determined by adjusting the mechanical regulator of the skimmer that
restricts the water outlet of the reaction chamber.
Any change in water chemistry, in particular changes that can affect the
surface tension of the water will affect the delicate balance that enables
a stable foam production. Some chemicals can prevent foam from
forming while others can cause the air/water mixture to expand causing
an extremely wet foam to suddenly rise inside the skimmer neck and
flood the collection cup with clean seawater. This phenomenon, known
as over-skimming, typically occurs in a reef aquarium after feeding,
adding new livestock, reef-scaping, equipment maintenance, water
changes or changes in the waterborne bacteria population.
The self-leveling functionality of the Reefer DC-Skimmers combines the
variable intensity of the PSK DC-1200 skimmer pump with a dual input
sensor that monitors both the wetness of the foam in the skimmer neck
and the liquid level in the collection chamber of the cup, to optimize the
performance of the skimmers.
When the self-leveling function is enabled and wetter than normal
foam is detected in the skimmer neck, the intensity of the PSK-DC
skimmer pump is immediately reduced to prevent over-skimming and
then incrementally increased back to the set intensity maintaining the
maximum possible aeration without allowing over-skimming.
If a full cup situation is detected, the intensity of the PSK-DC skimmer
pump is reduced to maintain efficient oxygenation of the water inside
the skimmer reaction chamber, without pushing new waste to the cup,
until it is emptied and regular operation can be restored.
Red Sea REEFERTM DC-Skimmer
9
ENG
DC-Skimmer Components
1
3
5
2
4
6
7
No. Name Part #
1 PSK DC-1200 complete R35570
2 PSK DC-1200 Impellor R50541-H50
3 Skim Sensor R35578
4
LID RSK 300 R35579
LID RSK 600 R35580
LID RSK 900 R35581
5 PSU R35575
6 Controller Cable R35563
7 RSK LID Grommmmets/Plugs R35585
AB
C
Red Sea REEFERTM DC-Skimmer
10
Installing the PSK DC-1200 Skimmer pump and Skim-sensor
Full instructions for installing the REEFER Skimmer are provided in the
REEFER Skimmer instruction manual.
The PSK DC-1200 skimmer pump is an exact drop-in replacement
for the PSK AC pumps. Follow the instructions in the REEFER Skimmer
manual to install the pump.
Skimmer pumps need to be cleaned on a
regular basis to remove calcium carbonate and
other deposits and therefore it is recommended
to familiarize yourself with the pump by
disassembling/reassembling it before installing
it for the first time in the skimmer. If you are
replacing an existing AC pump, remember to
return the cable restraint back into position.
Select a suitable location for the connector between the pump and
control cable to allow easy access when removing the pump for
maintenance.
Connect the control cable to the pump and power supply and thread the
controller part of the cable to the ReefRun Dual controller (RRDC).
The pump will not work until the RRDC has been onboarded to the
ReefBeat App and the pump has been setup.
Prepare the DC skimmer lid for use with the Skim-sensor by removing
the plastic plugs and inserting the black rubber grommets in the sensor
mounting holes. (Note; the wider flange of the grommets should be on
the upper surface of the lid.) The grommets are essential for holding the
sensor securely in position so ensure that they are in place.
If you have the upgrade kit you will need to replace the original lid with
a DC-Skimmer lid and transfer the neck wiper to the new lid.
AB
C
Red Sea REEFERTM DC-Skimmer
11
ENG
Thread the sensor cable as required to reach the RRDC but leave about
50cm / 20” of loose cable near the skimmer for ease of maintenance.
To avoid false full-cup alerts, orient the lid so that the cup sensor is not
directly above the foam view window of the collection chamber.
When the skimmer is assembled, insert the Skim-sensor into the
mounting holes located in the DC skimmer lid. The long probe is the neck
sensor and should be inserted in the hole in the inner recessed part of
the lid. The short probe is the cup sensor and should be inserted in the
hole in the upper surface of the lid.
Red Sea REEFERTM DC-Skimmer
12
1 2
Control
Cable
Pump 1
Control
Cable
Pump 2
Skim
Sensor
REEFER
DC Skimmer
ReefRun
DC Pump 1
PSU
Pump 1
PSU
Pump 2
Red Sea REEFERTM DC-Skimmer
13
ENG
Connecting to the ReefRun Dual Controller (RRDC)
Full instructions for connecting the ReefRun Dual controller to the
ReefBeat App are provided in the RRDC manual.
Setting up the PSK-DC 1200 on the ReefBeat App
The RRDC will identify that you have connected the PSK DC-1200
pump, however, you will need to select your REEFER Skimmer model
(RSK300/600/900) to implement the correct default pump intensity
settings, as they all use the same pump. The default pump intensity for
each model has been set to provide the optimal airflow and air/water
contact time. This setting considers the size of the reaction chamber and
performance of the venturi. You can manually adjust the flow intensity at
any time however we recommend that you use the default intensities.
The default setting is for a continuous operation of the skimmer (Always
ON) at the pump intensity shown in the settings page of the App. The
skimmer can be set to be OFF with the intensity setting saved to be
reinstated when turned back ON. Alternatively, the skimmer can be set
to “Self-leveling” which will automatically regulate the intensity if either
over-skimming or full-cup conditions are reached. The RRDC will identify
if you have connected the skim sensor, which needs to be connected
before the ReefBeat App will enable the setting option for the self-
leveling features. Remember to press the save button at the top of the
screen after making any changes to the settings.
DC-Skimmer Self-leveling
The Self-leveling feature of the ReefRun controller automatically
regulates the flow intensity of the DC skimmer pump based on the
dual action skim sensor located in the neck and collection chamber of
the collection cup. Before using the self-leveling features, the skimmer
should be set up as fully explained in the REEFER Skimmer instruction
manual by using the mechanical flow regulator to adjust its performance.
Each of the self-leveling sensors can be activated / deactivated by
toggling each one individually in the App.
Skimmer model RSK 300 RSK 600 RSK 900
Default Pump Intensity 70% 80% 100%
Air ow rate l/hr 480 720 900
Power (W) 20 25 30
Full-cup pump Intensity 25% 30% 35%
Full-cup Air ow rate l/hr 300 360 400
Red Sea REEFERTM DC-Skimmer
14
Over-skim regulation
The sensor in the neck monitors the wetness of the foam and will
activate a self-leveling procedure whenever a potential over-skimming
wetness is identified. When the wetness of the foam in the neck exceeds
the “over-skim” threshold the intensity of the pump is immediately
reduced to prevent over-skimming and then gradually increased and/
or decreased, a bit at a time, according to the foam wetness, until the
preset pump intensity is reached and stable skimming is restored.
To optimize performance of the feature the over-skim threshold is
adjustable from the App.
Lower the threshold if over-skimming is not prevented. Raise the
threshold if the skimmer is often in self-leveling mode and little or no
skimmate is being collected. Homepage>Settings Page>Pump>More
Settings>Over-Skim Regulation
At any time during the automated self-leveling process the skimmer can
be returned to normal skimming by pressing the resume button in the
App or the pause/play button on the controller.
Full-Cup regulation
The sensor in the collection chamber identifies when the cup is full and
needs emptying. When a full-cup is first registered the pump intensity
will be reduced to allow for continued aeration of the water. Once a full-
cup has been identified the system keeps monitoring the status and will
automatically revert to normal operation if it is not full to the maximum
capacity. Once maximum capacity has been reached the cup needs to be
emptied and then normal skimming restored from the App.
In the event that the over-skim threshold is passed while the skimmer
is in full-cup, the skimmer pump will be switched off until the cup is
emptied and normal skimming is restored from the App.
Skim-Sensor calibration
When selecting the Self-leveling setting for the first time the App will
guide you step by step through the skim sensor calibration procedure.
Each probe of the sensor needs to be calibrated individually and should
be immersed, one at a time, in a cup of water taken from the sump.
Immersing both probes at the same time or immersing the probe
directly in the sump (instead of in a cup) will give an incorrect result that
will affect the performance of the self levelling feature.
Skim sensor calibration will need to be repeated after a factory reset of
the RRDC or if the skim sensor is replaced.
Red Sea REEFERTM DC-Skimmer
15
ENG
Operating the REEFER DC Skimmer
The REEFER Skimmers have a precision geared skim regulator for a
very fine control of the foam point ensuring high skimming efficiency.
Rotating the regulator in the “Minus” direction lowers the foaming point
in the neck to produce a drier foam. Rotating in the “Plus” direction
raises the foaming point to produce a wetter foam.
Adjust the skim regulator so that the water level in the skimmer body is
approximately at the base of the neck. If the foam is too dry or it starts
to accumulate lower in the neck, gradually rotate the Skim Regulator
in the “Plus” direction until the desired foam consistency is achieved.
Alternatively, if the foam is too wet, gradually rotate the Skim Regulator
in the “Minus” direction.
NOTE: Correct setting of the regulator is essential for the proper
operation of the skimmer. The self-leveling will only prevent over-
skimming events when the regulator is set correctly.
Do not activate the over-skim protection on new skimmers or new set-
ups until the skimming is stable and regulated.
New set-ups typically have a negligible amount of organic matter in
the water and therefore is may take some time for a skimmate to be
produced.
New skimmers sometimes need a short break-in period of a few days
before they begin to function efficiently. Over-skimming is common
while harmless chemical residues that affect the surface tension of the
water are neutralized. Using the self-leveling feature during the break-in
period may not be effective and should be disabled. In case of over-
skimming rotate the regulator fully in the Minus direction and allow the
over-skimming to naturally reduce in intensity.
If the break-in does not end after a week, disassemble the skimmer,
and wash it in a slightly acidic solution. Rinse well in freshwater before
returning it to the sump.
Feeding and Supplementing
Skimmers are very susceptible to the effect of surface-active compounds
such as foods and supplements that are added regularly to the aquarium.
Such materials can significantly affect the foam production and in some
cases cause over-skimming.
Use the custom schedule or connect the skimmer to the Feed or
Maintenance Quick actions of ReefBeat to switch the skimmer off
immediately before adding such materials and leave off for however
long it takes until the skimmer can be returned to its normal foaming
action. After switching the skimmer back on the self-levelling feature will
take care of any residual materials by automatically reducing the pump
intensity until the set intensity can be restored.
Red Sea REEFERTM DC-Skimmer
16
Maintenance
Collection Cup
Monitor the amount of skimmate that accumulates in the collection cup
and drain the cup on a regular basis. Skimmer performance will benefit
from using the neck cleaner on a daily basis and will enable you to only
remove and wash the cup and wiper every 7 – 10 days. If you wash the
cup with detergent make sure to rinse it thoroughly before returning it to
the skimmer.
Skim-sensor
It is recommended to rinse the probes of the skim-sensor about once
a week to remove any build-up of organic matter. Rinse by immersing
and swirling the probes for a few seconds in the sump will be sufficient
to keep the probes working well. It is best to do this when the skimmer
is off otherwise rinsing the sensor will cause the skimmer to go into
self-leveling mode and will require pressing the resume button to restore
normal skimming immediately.
If a more intense cleaning is done such as using a mild acid or abrasive
pads to remove deposits the sensor should be recalibrated before
returning to normal use.
Skimmer Pump & Impeller
Over time mineral and organic deposits will form inside the
pump affecting its performance and longevity. For best results it is
recommended to remove the pump from the skimmer once a month for
cleaning.
Open the pump impeller chamber, pull out the impeller and rinse all
parts under the tap.
If you see any buildup of scale on the inside of the pump housing or on
the impeller magnet, use hot water or vinegar/scale remover to dissolve
it. Make sure that you rinse off all residues of any cleaning materials
before reassembling the pump.
Red Sea REEFERTM DC-Skimmer
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ENG
In order to affect this warranty, please contact your local service center.
For your convenience, details of authorized service centers can be found
on Red Sea’s website. Proof of purchase will be required before warranty
performance is rendered.
The sole and exclusive remedy against Red Sea shall be for the repair
or replacement of the Product as provided above. NO OTHER REMEDY
(including but not limited to, incidental or consequential damages for
lost profits, lost sales, or any other incidental or consequential loss) shall
be available. Some jurisdictions do not allow the exclusion of incidental
or consequential damage, so the above limitation may not apply to you.
To the full extent allowed by applicable law, in no event shall Red Sea
be liable for any loss or damage to aquatic life, and/or damage to other
property and/or individuals resulting from the use of the Product or arising
out of any breach of this warranty. All implied warranties are excluded to
the full extent allowed by applicable law, and to the extent that they may
not be excluded, are limited to the applicable warranty period set forth
above. Some jurisdictions do not allow limitations on how long an implied
warranty or condition lasts, so this limitation may not apply to you. The
express warranties made in this warranty are exclusive and may not be
altered, enlarged, or changed by any distributor, dealer, or other person,
whatsoever.
USA
Some states do not allow the exclusion or limitation of incidental or
consequential damages, or limitations on how long an implied warranty
lasts, so the above exclusion or limitations may not apply.
Warranty
Red Sea Products Limited Warranty.
Thank you for purchasing a Red Sea REEFERE DC-Skimmer upgrade kit
(hereinafter “the Product”).
Red Sea Aquatics (UK) Ltd. (hereinafter “Red Sea”) warrants the Product
against manufacturer’s defects in material and workmanship for 2 years
from your date of purchase.
Pump impellors are a wear item and as such Red Sea warrants the
impellors against manufacturer’s defects in material and workmanship for 6
months from your date of purchase.
The warranty provided by Red Sea is NOT TRANSFERABLE AND IS LIMITED
TO THE ORIGINAL PURCHASER. If the Product is eligible under this warranty,
Red Sea will either repair the Product free of charge (not including shipping
costs) with new or refurbished parts or replace the Product with a new or
refurbished Product at Red Sea’s sole discretion.
This warranty DOES NOT COVER normal wear and tear. It also DOES NOT
COVER damage which occurs in shipment and/or failures or defects resulting
from use outside the normal, and/or natural disasters, accidents, power line
surges, neglect, improper installation, operation or maintenance, servicing of
the Product conducted by anyone other than an authorized Red Sea service
center, or failure to use or assemble the Product in accordance with any
instructions provided (in the Product manual or otherwise) or the technical
and/or safety standards of the country in which the Product is used.
Additionally, any modification of the Product other than by an authorized
Red Sea service center will invalidate this warranty.
Red Sea REEFERTM DC-Skimmer
18
CE Declaration of Conformity:
The equipment complies with the RF Exposure Requirement 2014/53/
EU, Council Recommendation on the limitation of exposure of the general
public to electromagnetic fields (0-300 GHz). This equipment meets the
following conformance standards: EN 300 328, EN 301 489-17.
DISPOSAL: Do not dispose this product as unsorted municipal waste. Collection of such waste separately for special treatment
is necessary. This product must not be disposed together with the domestic waste. This product must be disposed at an
authorized place for recycling of electrical and electronic appliances. By collecting and recycling waste, you help save natural
resources, and make sure the product is disposed in an environmentally friendly and healthy way.
Red Sea REEFERTM DC-Skimmer
19
ENG
Red Sea REEFERTM DC-Skimmer
20
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