Structural Concepts ENCORE Series User manual

PN 99739
SERVICE GELATO DISPLAY CASE - LOW TEMPERATURE UNITS
> NOTE: DIPWELL COMPONENTS VARY DEPENDING UPON MODELS AND OPTIONS CHOSEN.
READ AND SAVE THESE INSTRUCTIONS
Rev R Date: 7.27.2016
Model G12F / G12F.4759 / G12F.5150…47 1/2”L* x 43 3/8”D x 53 3/4”H**
Model G18F / G18F.4888A………………67 1/2”L* x 43 3/8”D x 53 3/4”H**
Model G24F…………………………….….84 1/2”L* x 43 3/8”D x 53 3/4”H**
*Includes 2” End Panels
**Includes Levelers at 1 1/4” Below Base Frame
I:\Oper Manual\Encore\G12F_G12F-4759_G18F_G24F_99739.pub
INSTALLATION AND
OPERATING MANUAL
888 E. Porter Road · Muskegon, MI 49441 Phone: [phone] Fax: [phone] www.structuralconcepts.com
Model G24F
Is Shown At Left.
Your Model May Differ.
Model G12F.5150F
Is Shown At Right.
Your Model May Differ.

2
TABLE OF CONTENTS
OVERVIEW / TYPE / COMPLIANCE / WARNINGS / PRECAUTIONS / WIRING / PLUGS …………...
INSTALLATION …………………………………………………………………………………….……..…….
START-UP / OPERATING / MAINTENANCE / DRAIN SYSTEMS SECTION …………………………..
START-UP AND OPERATION .…………...…...…..……………………………………..……….……..……
MAINTENANCE FUNDAMENTALS ……………………………...………………………….…………..……
MODEL G12F DRAIN SYSTEM (Self-Contained Units With Optional Evaporator Pan Only) ……….....
MODEL G12F.5150 DIPWELL™DRAIN SYSTEM (Note: Dipwell™Configuration May Not Be
Applicable To Your Case) ……………………………………………………………………………...
MODEL G18F DRAIN SYSTEM (Self-Contained Units With Optional Evaporator Pan Only) ………….
MODEL G24F DRAIN SYSTEM (Self-Contained Units With Optional Evaporator Pan Only) ………….
STORE EMPLOYEES’ SECTION ONLY …………………………………………………..….…..………...
CLEANING SCHEDULE (TO BE PERFORMED BY STORE PERSONNEL) …………………………….
WEEKLY CLEANING (TO BE PERFORMED BY STORE PERSONNEL) ………………………………..
TROUBLESHOOTING (TO BE PERFORMED BY STORE PERSONNEL) ..………………………….....
TRAINED SERVICE PROVIDERS’ SECTION ONLY ………………………………………...…………….
PREVENTIVE MAINTENANCE (TO BE PERFORMED BY TRAINED SERVICE PROVIDERS ONLY)
TROUBLESHOOTING (TO BE PERFORMED BY TRAINED SERVICE PROVIDERS ONLY) ….….....
GENERAL TECHNICAL INFORMATION (SERIAL LABEL INFO / TEMPERATURE CONTROLLER
INFORMATION / TECHNICAL SERVICE INFORMATION, ETC.) ….…………………………...
SERIAL LABEL LOCATION & INFORMATION LISTED / TECH INFO & SERVICE …………………....
CAREL® TEMPERATURE CONTROLLER ………………………………………………….………………
TECHNICAL SERVICE CONTACT INFORMATION & WARRANTY INFORMATION .….………….......
3-4
5
6
7
8
9
10
11
12
13
14
15-18
19
20
21-24
25
26
27
28-30
31

3
OVERVIEW
 The Structural Concepts® Glass Front, Freezer
Service Gelato Display Case is designed to
merchandise gelato and/or soft ice cream into cones,
containers or dishes.
 This case is designed to maintain product at
temperatures of -2° F (–19 °C).
 Product must be pre-chilled to -2 °F (–19 °C) before
placing in merchandiser.
 Cases should be installed and operated according to
this operating manual’s instructions to insure proper
performance.
 Improper use will void warranty.
CASE TYPE
This unit is designed for the display of products in ambient
store conditions where temperatures and humidity are
maintained within a specific range.
 For Type 1 Conditions (most cases): ambient
conditions are to be at 55% maximum humidity and
maximum temperatures of 75 °F [24 °C].
 For Type 2 Conditions: ambient conditions are to be at
60% maximum humidity and maximum temperatures
of 80 °F [27 °C].
 If unsure if unit is designed for Type 1 or 2, see tag
next to serial label. See SERIAL LABEL LOCATION
& INFORMATION LISTED / TECH INFO & SERVICE
section in this manual for sample serial labels.
COMPLIANCE
 Performance issues when in violation of applicable
NEC, federal, state and local electrical and plumbing
codes are not covered by warranty.
 See below compliance guideline.
WARNINGS
 This sheet contains important warnings to prevent
injury or death.
 Please read carefully!
PRECAUTIONS, CORD/PLUG MAINTENANCE &
WIRING DIAGRAM INFORMATION
 See next page for PRECAUTIONS, CORD/PLUG
MAINTENANCE and WIRING DIAGRAM information.
WARNING
Hazardous moving parts. Do not operate unit with covers removed.
Fan blades may be exposed when deck panel is removed.
Disconnect power before removing deck panel.
WARNING
Risk of electric shock. Disconnect power before servicing unit.
CAUTION! More than one source of electrical supply is
employed with units that have separate circuits.
Disconnect ALL ELECTRICAL SOURCES before servicing.
WARNING
Condenser Pan is Hot!
Disconnect and allow to cool
before cleaning or removing from case.
WARNING
ELECTRICAL
HAZARD
WARNING
KEEP
HANDS
CLEAR
WARNING
HOT
SURFACE
COMPLIANCE
This equipment MUST be installed in compliance with
all applicable NEC, federal, state and local
electrical and plumbing codes.
OVERVIEW / TYPE / COMPLIANCE / WARNINGS / PRECAUTIONS / WIRING / PLUGS - PAGE 1 of 2

4
OVERVIEW / TYPE / COMPLIANCE / WARNINGS / PRECAUTIONS / WIRING / PLUGS - PAGE 2 of 2
CAUTION! ADVERSE CONDITIONS / SPACING ISSUES
 Performance issues caused by adverse conditions are NOT warranted.
 End panels must be tightly joined or kept at least 6-inches away from
any structure to prevent condensation.
 Unit must be kept at least 15-feet from exterior doors, overhead HVAC
vents or any air curtain disruption to maintain proper temperatures.
 Unit must not be exposed to direct sunlight or any heat source
(ovens, fryers, etc.).
 Tile floors, low ceilings or small rooms increase noise level. Whisper
Cool compressor blankets or remote units resolve noise level issues.
 Keep at least 8-inch clearance above unit for air discharge
(self-contained units only).
CAUTION
CAUTION! LAMP REPLACEMENT GUIDELINES
Fluorescent lamps have been treated to resist breakage and
must be replaced with similarly treated lamps.
LED lamps reflect specific size, shape and overall design.
Any replacements must meet factory specifications.
CAUTION
PRECAUTIONS
 This sheet contains important precautions to prevent
damage to unit or merchandise.
 Please read carefully!
 See previous page for specifics on OVERVIEW,
TYPE, COMPLIANCE and WARNINGS.
WIRING DIAGRAM
 Each case has its own wiring diagram folded and in
its own packet.
 Wiring diagram placement may vary; it may be
placed near ballast box, field wiring box, raceway
cover, or other related location.
CAUTION! CHECK EVAPORATOR PAN POSITION AND PLUG
Water on flooring can cause extensive damage!
Before powering up unit, check the following:
 Evaporator pan MUST BE positioned directly under condensate drain.
 Evaporator pan plug MUST BE securely plugged into receptacle.
CAUTION! POWER CORD AND PLUG MAINTENANCE
Risk of electric shock. If cord or plug becomes damaged,
replace only with cord and plug of same type.
CAUTION! GFCI BREAKER USE REQUIREMENT
If N.E.C. (National Electric Code) or your local code
requires GFCI (Ground Fault Circuit Interrupter) protection,
you MUST use a GFCI breaker in lieu of a GFCI receptacle.

5
INSTALLATION
1. Remove Unit From Skid
Caution: case must always remain supported or
center of gravity will allow case to fall. Slide unit
to rear of skid and tip backward off skid.
3. Remote Electrical Connections:
Model G24F: Field wiring hook-up / electrical access locations are shown in
the illustration below.
 220V Single Phase Leads or Cord with Nema Plugs provided.
 See SERIAL LABEL LOCATION & INFORMATION LISTED / TECH
INFO & SERVICE for more detailed information.
 Model G12F: Field wiring hook-up / electrical access locations are at
opposite end than that shown below.
Installation: Units shown may not depict an exact representation of your particular unit being installed.
Slide
Skid
Out Support
required
to prevent
tipping.
2. Case Aligning, Adjusting and Sealing
 For Service Glass to align properly, case must be
level and plumb. Adjust feet accordingly (see
illustration above).
 Caution! These units MUST BE sealed to the
floor to maintain conformance to NSF®
equipment mounting standards.
 Align multiple units (as shown above with balloons
A and B).
A
B
Pry
Bar Block
Wireway through Rear Grille
Model G24F: Field Wiring Hookup into
Electrical Box Model G12F: Field Wiring
Hookup is at opposite end.
Case
Front

6
START-UP / OPERATING / MAINTENANCE / DRAIN SYSTEMS SECTION
START-UP /
OPERATING /
MAINTENANCE /
DRAIN SYSTEMS

Merchandiser Start-Up
 Self-Contained: Main Power switch is located at
case rear, lower left. See illustration at lower
right and lower left.
 Remote Units: Case is hard-wired. When power
is supplied, case will power-up.
 Lights: Turn on the lights. Whether Remote or
Self-Contained, light switch is located on inside of
case at top left, from case rear. See illustration
at top right.
 Light Warm-up: All lights should come on at the
same time. First time lighting may require a short
warm up period for the bulbs. Slightly dim or a
flickering of new bulbs is normal.
 Merchandising: Please allow unit to run empty
for at least 1 1/2 hrs (90 minutes) before
merchandising.
Raise the Curved Glass
 To raise the curved glass, grasp the lift handle
extrusion on the bottom edge of the door and lift
up. See illustration below-right.
 Caution: Carefully return curved glass to original
position.
Removing (Optional) Rear Glass Doors
 Move rear doors toward the case center.
 Individually lift each door up toward top of case
and pivot bottom of the door out.
 Caution: Gently set doors down to avoid marring,
scratching or breakage.
7
START-UP AND OPERATION
Main
Power
Switch
View of Curved
Glass being
raised
Main Power
Switch
Temperature Controller Location:
G24F: At Left Side of Case Rear
(as shown above)
G12F: At Right Side of Case Rear
View of
Rear Door
being lifted
up,
pivoted out
and away
from
case
Curved Glass
Lift Handle
Temp.
Controller
(see Temp.
Controller
Section)

8
MAINTENANCE FUNDAMENTALS
Light Fixtures
Warning! Disconnect power before providing maintenance and
service to unit.
Caution: Lamps have been treated to resist breakage and must be
replaced with similarly treated lamps.
Light fixtures are to be located on underside of shelf assembly, at the top
inside of case, and lower front nose of case. See next page for light
fixture locations.
Removal of lamp:
 Rotate lamp (1/4-turn) either direction to disengage (upper or lower)
pins/contacts from lamp-mounting sockets.
 Remove bulb by applying even pressure from back side at the bulb
ends and pulling the remaining contact from sockets.
Installation of lamp:
 Align pins with slot.
 Insert pins into socket by rotating the bulb 1/4-turn to secure either
the (upper or lower) pin contacts into the sockets.
 Rotate remaining bulb contacts (1/4-turn) into remaining lamp
mounting socket contacts.
Optional Clean Sweep Condensing Coil
 Clean sweep Condensing Coil (photo below) is accessible by removing rear grille.
 See Preventive Maintenance (To Be Performed By Trained Service Provider) for cleaning
instructions.
 Photo below is after rear grille has been removed case

9
Self-Contained Units have Drain Systems that allow thorough defrost and interior cleaning.
 Default Drain Valve setup (from manufacturer) is with Internal Evaporator Pan being utilized.
MODEL G12F DRAIN SYSTEM (Standard Self-Contained Units With Optional Evaporator Pan Only)
Model G12F View of Case
Rear (Your Model May Vary)
ModelG24F
PartiallyDisassembled Case
(forillustrativepurposes only)
Drain
Drain
Trough
Decking
Pans (at
caserear)
Tub
Pans (at
casefront)
Support
Rails
Fan
&Fan
Shroud
External
Drain
Spout
Internal
Evaporator Pan
Drain
Valve
Evaporator
Drain Hose
Note : Model and options
chosen may affect location of
valves, drains, controller,
electrical box location, or
number of pans shown in
these illustrations.

10
This unit is self-contained and is designed to allow thorough defrost and interior cleaning.
 Default system of this unit (from manufacturer) is WITHOUT internal evaporator pan.
 Note: Fully assembled Dipwell™ unit MAY NOT reflect your setup at shipment. See illustration below
for specifics on components that may need to attached at installation.
 See CLEANING SCHEDULE (TO BE PERFORMED BY STORE PERSONNEL) section in this
operating manual for Dipwell™ cleaning instructions.
MODEL G12F.5150 DRAIN SYSTEM (Dipwell™ Configuration May Not Be Applicable To Your Case)
Note: Model G12F.5150 Dipwell™ Drain System Shown Above.
Fully Assembled Dipwell™ Drain System May Not Be Applicable To Your Case.
Floor Drain
Front
P-Trap
Front
Drain
Rear DrainRear P-Trap
*Drain
Funnel
Stainless Steel
Dipwell™ Cistern
*Water
Supply
Piping
*Water
Spout
*Dipwell™
Drain
Piping
*Note: Most Cases Are Shipped With
Dipwell™ Cistern ONLY where
Customers Must Supply Their Own
Drain and Water Connection
Components (Water Spout, Drain
Funnel, Spigot, Water Supply
Piping, Dipwell™ Drain Piping, Etc.)
*Spigot

11
Self-contained units have drain systems that allow thorough defrost and interior cleaning.
> Default drain valve setup (from manufacturer) is with internal evaporator pan being utilized.
MODEL G18F DRAIN SYSTEM (Self-Contained Units With Optional Evaporator Pan Only)
VALVE
POSITION
INTERNAL
EVAP. PAN
EXTERNAL
DRAIN
Internal
Evaporator
Pan
Evap.
Pan Tray
Drain
Valve
Main Intake
Evaporator
Drain Hose
External
Drain Spout
External
Drain
Main
Intake
ModelG18F View of
Case Rear (Your
ModelMay Vary)
ModelG24F
PartiallyDisassembled Case
(forillustrativepurposes only)
Drain
Drain
Trough
Decking
Pans (at
caserear)
Tub
Pans (at
casefront)
Support
Rails
Fan
&Fan
Shroud
Model G18F
Evaporator
Pan Setup
Shown At
Right
Note : Model and options
chosen may affect location of
valves, drains, controller,
electrical box location, or
number of pans shown in
these illustrations.

12
Self-Contained Units have Drain Systems that allow thorough defrost and interior cleaning.
 Default Drain Valve setup (from manufacturer) is with Internal Evaporator Pan being utilized.
MODEL G24F DRAIN SYSTEM (Self-Contained Units With Optional Evaporator Pan Only)
VALVE
POSITION
INTERNAL
EVAP. PAN
EXTERNAL
DRAIN
EXTERNAL
DRAIN
INTERNAL
EVAP.PAN
VALVE
POSITION
Internal
Evaporator
Pan
Evap.
Pan Tray
Drain
Valve
Main Intake
Evaporator
Drain Hose
External
Drain Spout
External
Drain
Main
Intake
Model G24FView of
Case Rear (Your
Model MayVary)
ModelG24F
PartiallyDisassembled Case
(forillustrativepurposes only)
Drain
Drain
Trough
Decking
Pans (at
caserear)
Tub
Pans (at
casefront)
Support
Rails
Fan
&Fan
Shroud
Note : Model and options
chosen may affect location of
valves, drains, controller,
electrical box location, or
number of pans shown in
these illustrations.
Model G24F
Evaporator
Pan Setup
Shown At
Right

13
STORE EMPLOYEES’ SECTION ONLY
ILLUSTRATIONS,
INSTRUCTIONS AND
INFORMATION
CONTAINED IN
THIS SECTION
PERTAINS TO
STORE EMPLOYEES
ONLY

14
CLEANING SCHEDULE (TO BE PERFORMED BY STORE PERSONNEL) / “D” = DAILY / “W” = WEEKLY
Cleaning
Area D W Task
Clean Case
Exterior
X Glass: Clean side glass, front curved glass and sliding glass rear doors (optional) with a household or commercial glass cleaner.
X Dipwell™ Cistern:
 The Dipwell™ cistern is to be filled with water for thawing gelato scoops.
 Cistern must be entirely removed from case for cleaning (no tools required).
 To clean cistern, rotate the water spout (that prevents cistern from being
lifted upward). Grasp edges of cistern; lift up and off case.
 Submerse in hot water and clean with mild detergent and soft-bristled brush.
 Rinse with clean water to remove all soap residue.
 Dry with clean cloth or paper towel and return cistern to case.
 See illustration below.
Clean Case
Interior X Pans and Supports: Remove pans & supports (leaving fan cover panels in case). Submerse in hot, soapy water and wash with sponge or clean cloth. Rinse, dry,
and return to case.
X Rear Sliding Doors: Remove rear doors and clean with a household or commercial cleaner (service cases only).
X Extended Internal Cleaning: Extended internal cleaning required ensure proper
performance.
See WEEKLY CLEANING (TO BE PERFORMED BY STORE PERSONNEL)
section in this manual for specifics.
Dipwell™ Illustration Showing
Slide-Out Capability
Lift the Dipwell™ cistern up and off
its mount to clean. See cleaning
instructions above.

Note: Full defrost process takes at least 6 hours (and is often performed overnight).
Caution! You must remove product from case and place in freezer PRIOR TO defrosting this unit.
See step #1, below.
1. Remove product from case. Place in
freezer.
2. Determine whether your case has a Drain
Spout and Valve (at rear of case).
If your case does NOT have a Drain Spout
and Valve, you may jump to Step 5 in these
instructions.
See illustrations at right for several valve
designs.
3. Connect hose (1” I.D.) to drain spout and
run to floor drain or bucket. Or, if no hose is available, place bucket under drain spout.
4. After hose is connected (or bucket is in place), crank drain valve to
External Drain position. This will allow the water to drain into floor drain
(or bucket) while case is defrosting.
Defrost Procedure: This step takes place AFTER product has been
removed and placed in freezer.
5. Locate temperature controller and main power switch (at rear-left or
rear-right of your case) as shown in illustration at right.
6. Become familiar with the temperature controller. See illustration below.
7. Case must now be placed in manual defrost mode. To do so, press and hold the Defrost Key
(shown at right) for 5 seconds.
8. Defrost light (shown at left) will come on if defrost key has been properly pressed. If defrost light
is not on, repeat step 7.
9. After 15 to 20 minutes, defrost light will turn off. Turn OFF main power switch. Allow to sit at
least 6 hours (or overnight) before proceeding to next step.
 Do not be alarmed if, after Defrost Light turns off, Compressor Light (shown at right) comes on.
Turn off main power anyway.
Cleaning Instructions Continue On Next Page…
Temperature
Controller
Main Power
Switch
DRAIN SPOUT
VALVE
POSITION
INTERNAL
EVAP.PAN
EXTERNAL
DRAIN
DRAIN SPOUT
WEEKLY CLEANING (TO BE PERFORMED BY STORE PERSONNEL) - PAGE 1 of 4
15
Defrost
Key
Defrost
Light
Compressor
Light
 CAUTION! YOU MUST PERFORM THIS CLEANING PROCEDURE EVERY 7 DAYS TO
PREVENT ICE BUILDUP AND TO KEEP CASE RUNNING AT PROPER TEMPERATURE.

Cleaning Instructions Continued…
Note: These steps take place AFTER case has
defrosted and power has been turned off.
The cleaning process may now begin:
10. Remove pans and support rails. Submerse in
hot, soapy water. Clean with non-abrasive cloth or
soft-bristled brush. See illustration #10 below.
WEEKLY CLEANING (TO BE PERFORMED BY STORE PERSONNEL) - PAGE 2 of 4
16
11. Remove knurled head fasteners (at rear of unit).
See illustration #11 below.
12. Lift up out of unit. Submerse in hot, soapy water.
Clean with non-abrasive cloth or soft-bristled brush.
See illustration #12 below.
Cleaning Instructions Continue On Next Page…
Fan Cover
Panels Drain Drain
Trough Tub
Support Rails
Fan
& Shroud
Fan Cover
Panel
10
11
Pans
 CAUTION! YOU MUST PERFORM THIS CLEANING PROCEDURE EVERY 7 DAYS TO
PREVENT ICE BUILDUP AND TO KEEP CASE RUNNING AT PROPER TEMPERATURE.
Fan Cover
Panel
12

Cleaning Instructions Continued…
Note: These steps take place AFTER case has
defrosted and power has been turned off.
Optional: Check condition of tub around (and
under) evaporator fan shroud. If oily residue and
food particles warrant cleaning under fan shroud,
follow steps 13-17. If not, continue at step #18.
13. Locate the evaporator fan shroud electrical plug
at left of fan shroud.
14. Carefully remove electrical tape and disconnect
dual-prong plug from receptacle.
15. Lift tabs from slots and lift rear fan shroud
assembly upward from case.
WEEKLY CLEANING (TO BE PERFORMED BY STORE PERSONNEL) - PAGE 3 of 4
17
16. Lift fan shroud assembly up and out.
17. View of tub area after all pans, support rails, fan
cover panels and evaporator fan shroud have been
removed from case.
18-20. Use bucket of hot water, mild detergent, soft
bristled brush (or sponge) to clean away oily residue
and food particles.
21. After all residue has been dislodged, use spray
bottle or hose with slowly-flowing water to rinse out
tub area to floor drains. Caution! If using hose, do
not splash onto electrical cords, fan or plug.
22. Dry with paper towel or cloth when complete.
Cleaning Instructions Continue On Next Page…
 CAUTION! YOU MUST PERFORM THIS CLEANING PROCEDURE EVERY 7 DAYS TO
PREVENT ICE BUILDUP AND TO KEEP CASE RUNNING AT PROPER TEMPERATURE.
13
14
15
16
18
20
17
Tab (Typ.)
Slot (Typ.)
19
21
22

Cleaning Instructions Continued…
Note: These steps take place AFTER case has
defrosted and power has been turned off.
23. After cleaning, rinsing and drying tub area, is
complete, place evaporator fan shroud assembly
back into case.
24. Firmly reconnect two-pronged plug into
receptacle.
25. Re-tape plug with existing electrical tape. If tape
has lost its adhesiveness, replace.
26. Replace fan cover panels. Note: fan cover are
NOT symmetrical.
27. Place center support rail across case (slots are at
each inside end panel of case).
WEEKLY CLEANING (TO BE PERFORMED BY STORE PERSONNEL) - PAGE 4 of 4
18
28. Place support rails across case (slots are at both
front and rear of case). Optional Ice Cream Pan
Adapter Plate: Place ice cream pan adapter plate
across support rails as shown.
29. Set pans into place (in support rails).
30. Slowly lower curved glass.
> Turn crank drain valve back to the internal
evaporator pan position. If no floor drain was used,
empty bucket of it contents.
> Turn main power switch back on.
Caution! Case must run at least 1 1/2 hours
(90 minutes) to assure proper case temperatures
before returning product to case.
> Return product to the case.
 CAUTION! YOU MUST PERFORM THIS CLEANING PROCEDURE EVERY 7 DAYS TO
PREVENT ICE BUILDUP AND TO KEEP CASE RUNNING AT PROPER TEMPERATURE.
23
29 28
30
24 25 26
27
Center Support Rail
Support Rails
(Typical)
Fan Cover Panel
Ice Cream
Pan Adapter
Plate
(Optional)

19
TROUBLESHOOTING (TO BE PERFORMED BY STORE PERSONNEL)
Doors/Glass Won’t Shut Properly Check that there is no residue or obstruction in door track.
System Is Not Operating Check the MAIN power switch is on.
If power cord is used, check that it is properly plugged in.
Case Lights Are Not Working Be sure ALL light bulb pins are properly aligned with slots and
rotated properly.
Check for burned out bulbs.
Clean dirt and dust from the bulbs to prevent flickering.
After performing above checkpoints, if lights are still not working,
contact your service provider or certified electrician to check for
faulty ballast.

20
TRAINED SERVICE PROVIDERS SECTION ONLY
ILLUSTRATIONS,
INSTRUCTIONS AND
INFORMATION
CONTAINED IN THIS
SECTION PERTAINS
TO TRAINED SERVICE
PROVIDERS ONLY