Oasis Concepts Coffeemaker FSTB A60 User Manual

INSTALLATION / OPERATION MANUAL  
FSTB-A SERIES BREWERS  
FSTB-A60  
*FSTB-A60C  
FSTB-A80  
Length  
20-1/2  
21-1/2  
10-1/4  
Length  
Height  
Width  
20-1/2  
16-7/8  
9-7/8  
Height  
Width  
1430 Watts  
12 Amps  
120 Volts  
1430 Watts  
12 Amps  
120 Volts  
*Model includes carafe  
OASIS CORPORATION  
265 N. Hamilton Road  
P. O. Box 3150•Columbus, OH 43213-0150  
1-800-64-OASIS (1-800-646-2747)  
Manual PN 30099-256  
 
WARNING: WATER TANK MUST BE FILLED BEFORE PLUGGING MACHINE INTO  
ELECTICAL OUTLET  
VOLUME PROGRAM PROCEDURE  
A. ENERGIZE BREWER / HOT TANK HEAT UP  
1. To power up brewer and start the hot tank, push the ON/OFF MAIN POWER switch, at rear of the brewer, to the  
ON position (See Figure 2).  
ON  
OFF  
Figure 2  
ON/OFF MAIN POWER switch illustration (switch  
located at rear of brewer)  
2. Turn the front control panel on by pressing the ON/OFF BREW CANCEL button. The red light above this button  
will illuminate indicating that the front control panel in on.  
3. Hot tank must reach full temperature. From a cold start, final temperature will be reached in 10-15 minutes and is  
indicated when the green OPTIMUM WATER TEMPERATURE light is illuminated.  
4. Once hot tank has reached final temperature, the expanded water must be released. To do so, place the  
appropriate empty carafe into position under brew basket, start a brew cycle by pressing the BREW (FULL POT)  
button and let it run for about (20 seconds). To stop the brew cycle, press the ON/OFF BREW CANCEL button.  
NOTE:  
Brewer is pre-programmed at the factory for a (6 oz.) brew cycle. Program procedure must be  
completed to set required pot volume.  
B. INITCIATE VOLUME PROGRAM PROCEDURE  
1. Make sure power is shut off to the brewer by pushing the ON/OFF MAIN POWER switch to the OFF position.  
2. Press and hold down the BREW (FULL POT) button on the front control panel.  
3. While holding down the BREW (FULL POT) button, push the ON/OFF MAIN POWER switch at the rear of the unit  
to the ON position.  
4. Once the ON/OFF MAIN POWER switch has been pushed to the ON position, the BREW (FULL POT) button can  
be released.  
The brewer is now in the volume set up mode and is indicated by a flashing red light above the BREW (FULL POT)  
button.  
C. PROGRAM POT SIZE  
1. Remove brew basket.  
2. Place measuring pitcher on base under the spray head (spray head must be attached for accurate volume).  
3. Press the BREW (FULL POT) button to start water flow (red light will continue to blink).  
4. Allow measuring pitcher to fill to the required volume.  
5. Press the BREW (FULL POT) button to stop water flow when it has reached the required volume.  
6. Press the BREW (FULL POT) button again to lock the volume into memory.  
NOTE:  
Programmed volume will remain in memory even with lose of power or if unplugged, until the volume  
program procedure is initiated and volume is reprogrammed.  
Half pot function is automatically calculated and set to exactly half of the programmed volume.  
CAUTION: THE FILTER LOCATED ON THE FLOAT CAP MUST REMAIN  
COMPLETELY DRY AT ALL TIMES. TAKE SPECIAL CARE IN  
TRANSPORTING A BREWER WITH A FULL UPPER RESERVOIR AS IT  
MAY CAUSE THE FILTER TO GET WET.  
 
OPERATION INSTRUCTIONS  
A. BREWING COFFEE  
1. Remove brew basket from brewer.  
2. Place one (1) standard commercial filter (9.5 inch  
diameter) into brew basket.  
3. Put required amount of coffee grounds into filter and  
shake brew basket to level off coffee grounds.  
4. Return brew basket to brewer.  
NOTE:  
Brew basket is designed to click into  
place when properly installed. This action  
secures the brew basket to the cabinet.  
Filter/Coffee  
Placement  
5. Place appropriate EMPTY thermal carafe into position  
below the brew basket.  
Brew Basket  
6. Press the BREW (FULL POT) button for full pot volume  
or the BREW (HALF POT) button for half pot volume.  
NOTE:  
The corresponding light above the chosen  
BREW button will blink for the duration of  
the brew cycle. When light has stopped  
blinking, the brew cycle is complete and it  
is safe to remove the carafe.  
Figure 3  
Brew Basket Illustration  
7. After brewing is complete, remove brew basket and  
discard used coffee grounds and filter.  
8. Rinse brew basket and return to brewer.  
B. CANCELLING A BREW CYCLE  
To cancel a brew cycle that is in process, press the ON/OFF BREW CANCEL button located on the front control  
panel. When canceling a brew cycle, water is shut off to the spray head, but the brew basket will continue to drain  
until depleted.  
C. CUP DRAW FROM SAFTEY FAUCET  
CAUTION: WATER FROM SAFETY FAUCET IS HOT  
To draw a cup of hot water from the safety hot faucet (red button  
located on the front panel of the brewer):  
1. Place an empty cup directly under the non-textured bump  
out located directly under the CAUTION HOT WATER label  
(see figure 4).  
2. Push the red button down and forward to start the flow of  
hot water.  
3. When finished, release button. Button will return to original  
position and hot water will stop flowing.  
Figure 4  
Safety Faucet Illustration  
 
SERVICE INSTRUCTIONS  
Rear Switch Plate  
Screws (2)  
A. ADJUSTING HOT TANK THERMOSTAT  
Whenever thermostat adjustment becomes  
necessary, complete the following procedure:  
1. Disconnect power cord from electrical  
outlet.  
On/Off main  
power switch  
3/8” Quick Tube  
Connect  
IEC Cord  
Receptacle  
2. Remove (2) screws and rear panel (see  
figure 5).  
Thermostat  
Adjustment Knob  
3. Use a bladed screwdriver to adjust the  
thermostat knob (see figure 5). Turn  
clockwise for hotter water temperature  
and counter clockwise for cooler water  
temperature.  
Rear Panel  
4. Replace rear panel and (2) screws.  
5. Plug power cord into electrical outlet and  
follow steps 1-3 in ENERGIZE  
BREWER/HOT TANK HEAT UP  
Figure 5  
Thermostat Adjustment Illustration  
B. CLEANING THE SPRAYHEAD  
Over time mineral build up may develop around the  
(6) spray holes on the spray head which may lead to  
pot volume variances. Periodic inspection and  
cleaning of the spray head is recommended.  
Hot Water  
Faucet Outlet  
Opening  
1. Turn spray head counter clockwise a quarter  
turn until it stops (see figure 6).  
Brew Basket Rails  
2. The spray head and the brew basket rail will  
drop straight down to remove.  
Spray Head Gasket  
Spray Head  
3. Remove gasket from spray head when cleaning.  
4. Reassemble spray head and brew basket rail  
using reverse procedure. Make sure spray  
head detents (clicks) into place when  
reassembling.  
Figure 6  
Spray head removal Illustration  
C. REMOVING HOT TANK ASSEMBLY FROM CABINET ASSEMBLY  
1. Turn the main water supply to brewer OFF.  
2. Disconnect the power cord from both the electrical outlet  
and the IEC plug located at the rear of the brewer (see  
figure 5).  
3. Disconnect 3/8 inch supply tube from quick tube connect  
(see Figure 5).  
Cover  
NOTE:  
If hot tank is full, water will dribble from the  
external tube fitting. It is recommended that  
the fitting be plugged with the provided 3/8  
inch plug.  
4. Remove cover from cabinet assembly.  
5. Remove (2) screws and rear panel (see figure 5).  
6. Pull drain tube out rear access opening.  
7. Remove plug from end of drain tube.  
Hot Tank  
Assembly  
CAUTION: HOT WATER WILL IMIDIATLY FLOW  
Cabinet  
Assembly  
FROM DRAIN TUBE.  
8. Remove ribbon cable for circuit board.  
9. Let tank completely drain of water.  
10. When finished draining tank, replace the drain tube plug.  
11. Remove silicone tube from hot water faucet fitting.  
12. Remove molded silicone tube from spray head top.  
13. Remove (2) screws from rear switch plate (see figure 5).  
14. Remove hot tank assembly from cabinet by lifting from  
the upper plastic reservoir (see figure 7).  
Figure 7  
Hot Tank / Cabinet Assembly  
 
D. SERVICING THE MECHANICAL FLOATS  
Air filter  
Resetting the Safety Float  
1. Remove cover from cabinet.  
2. Press down on the safety float  
re-set button (see figure 8).  
Safety float  
re-set button  
Circuit Board  
Float arm inspection  
1. Remove float cap from top  
reservoir.  
Solenoid  
Valve  
2. Float arms should move up and  
down freely and should not bind  
or catch (see figure 9).  
Spray Head  
Tube  
Figure 8  
Open Cover  
Figure 9  
Mechanical Float Cap Assembly  
E. INSPECT AND REPLACE CIRCUIT BOARD FUSE  
1. Disconnect power cord from electrical outlet.  
2. Remove cover from cabinet.  
3. Locate fuse at the lower right side of the circuit board (see  
figure 8) and inspect the fuse filament for breakage.  
4. If fuse appears to have blown, carefully remove it from the  
circuit board and check it for continuity.  
5. If fuse is blown, replace it with a 25 volt, 5 AMP, slow blow  
fuse.  
F. INSPECT AND REPLACE DUMP SOLENOID VALVE  
1. Disconnect power cord from electrical outlet.  
2. Remove cover from cabinet.  
3. Locate dump solenoid (see figure 8) and visually inspect clear  
solenoid valve body for mineral build up or debris.  
Loosen Solenoid  
Screws (2)  
4. If build up or obstruction has occurred, remove the hot tank assembly  
from the outer cabinet (see section C).  
5. Remove both sets of wires from the solenoid valve.  
6. Remove from the solenoid valve both the silicone tube from the hot  
tank and the angled silicone tube going to the spray head.  
7. Remove the dump solenoid by loosening the two screws that hold it to  
the bracket assembly. Once the screws have been loosened, the  
solenoid valve can be removed from the bracket slots (see figure 10).  
8. If replacement is required, assemble a new or refurbished dump  
solenoid valve in the reverse order.  
Figure 10  
Dump Solenoid Valve  
G. THERMOSTAT REPLACEMENT  
Primary Thermostat (see figure11)  
1. Disconnect the power cord from both the electrical outlet  
and the IEC plug located at the rear of the brewer (see  
figure 5).  
2. Remove the hot tank assembly from the outer cabinet (see  
section C).  
3. Remove both wires from the anti boil thermostat.  
4. Loosen tie wire and remove the rear half of the insulation  
from the hot tank.  
Limiter  
Control  
5. Using an 11/32 inch nut driver, remove nut from thermostat  
threaded weld stud. Nut secures thermostat and cover.  
6. Remove thermostat cover.  
7. Remove thermostat from threaded weld stud.  
8. Remove both wires from thermostat.  
9. Replace using the reverse order as above.  
NOTE: When threading the nut back to the weld stud (the  
reverse of step 5) a torque value of 18 inch pounds must be  
applied for proper assembly.  
Primary  
Thermostat  
Primary Thermostat  
Cover  
Anti-Boil Thermostat (see figure 11)  
Anti-Boil  
Thermostat  
1. Follow steps (1-4) from Primary Thermostat.  
2. Using a ¼ inch nut driver remove both screws from bracket.  
3. Replace using the reverse order.  
Figure 11  
Thermostat Locations  
 
G. THERMOSTAT REPLACEMENT (CONTINUED)  
Limiter Control (see figure 11)  
1. Follow steps 1 and 2 from Primary Thermostat.  
2. Remove tank feed and vent silicone tubing from  
reservoir bottom.  
3. Remove upper reservoir by releasing the (3) clips.  
4. Remove both wires from limiter thermostat.  
5. Using a ¼ inch nut driver remove both screws from  
bracket.  
6. Replace limiter control using the reverse order.  
H. INSPECT AND REPLACE HOT FAUCET  
Mineral build up may occur over time causing a  
slower than normal flow rate from hot faucet.  
Periodically inspect the faucet outlet (see figure  
6) for mineral build up. Also check for mineral  
build up, obstruction or kinking of the silicone  
tube from the hot tank to the hot faucet. If build  
up is abundant, the hot faucet may need to be  
replaced. For replacement see instructions  
below.  
Remove (4)  
Screws  
Remove (2)  
Screws  
1. Drain hot tank (see Section C steps 1-8)  
2. Remove silicone tube from hot faucet.  
3. Remove (4) front panel assembly screws  
from inside cabinet.  
4. Remove (2) faucet bracket screws from  
front panel assembly.  
5. Loosen hot faucet nut and remove faucet  
from bracket.  
Figure12  
Hot Faucet Assembly  
6. Replace hot faucet using the reverse  
order.  
NOTE: If dripping from hot faucet occurs, the  
bonnet (see Figure13) may be too  
loose. To tighten, turn bonnet one  
quarter turn clockwise.  
Hot Faucet  
Bonnet  
Figure 13  
Hot Faucet  
I. FLOAT CAP AIR FILTER (see figure 8)  
NOTE: If brewer is moved while filled with water, splashing from the upper reservoir may cause the air filter on  
the float cap to get wet. When moving or transporting brewers, make sure the tank is drained enough  
that the upper feed reservoir is not holding any water.  
NOTE: Make sure the air filter is completely dry of before setting the pot volume.  
If the filter media inside the air filter is wet during the programming of a pot volume, it may cause variances in pot  
volumes for subsequent brew cycles. Make sure the air filter is completely dry of before setting the pot volume.  
If the filter media inside the air filter gets wet anytime after the programming of pot volume, it may cause erratic  
pot volumes.  
J. HOT TANK MAINTENANCE  
NOTE:  
Over time the hot tank and hot water ways may develop mineral build up which can narrow waterways  
affecting pot volumes and hot faucet draws. Mineral build up may occur sooner or later depending on  
the TDS level of the supply water to the brewer.  
 
TROUBLE SHOOTING GUIDE  
PROBLEM  
RESOLUTION  
Check that the power cord is properly plugged into the  
IEC receptacle located at the back of the brewer (see  
Figure 5).  
Brew Cycle Will Not Start  
Check that the power cord is plugged into a proper  
electrical outlet (see Service Instructions Section C).  
Check that the power switch is in the “on” position (see  
figure 2).  
Check that the water supply line to the brewer is  
connected properly and turned on (see Service  
Instructions Section B).  
Check/ replace fuse on circuit board (see Service  
Instructions Section E).  
Re-set safety float (see Service Instructions Section D).  
Check for mineral build up, clogs or kinks to water lines  
and fittings.  
Clean spray head (see Service Instructions Section B).  
Check solenoid valve for mineral build up or blockage  
(see Service Instructions Section F).  
Replace solenoid valve (see Service Instructions Section  
G).  
Verify that the volume program procedure was completed  
correctly according to the manual (see Volume Program  
Procedure).  
Check that brewer is getting power  
Adjust thermostat (see Service Instructions Section A).  
Replace primary thermostat (see Service Instructions  
Section G).  
No Hot Water or Not Hot Enough Hot Water  
Replace heating element.  
Verify carafe is empty before brewing fresh pot.  
Verify supply line pressure – if needed add a pressure  
regulator.  
Carafe Overflows  
Check that float arms are moving up and down freely and  
are not binding (see Service Instructions Section D).  
Check for mineral buildup, clogs or kinks to water lines  
and fittings.  
Remove and dry (air) filter (see Service Instructions  
Section I).  
Check hot tank for mineral build up (see Service  
Instructions Section J).  
Re-set pot size (see Volume Program Procedure).  
Adjust thermostat to provide hotter water (see Service  
Instructions Section B).  
Weak Coffee  
Clean spray head (see Service Instructions Section B).  
Modify coffee roast, blend, grind or filter.  
Tighten hot faucet bonnet one quarter turn (see Service  
Instructions Section H).  
Replace hot faucet (see Service Instructions Section H).  
Hot Faucet Dripping  
Check for mineral build up at the faucet outlet (see  
Service Instructions Section H).  
Check for mineral build up, obstructions or kinks to  
silicone tube from hot tank outlet to hot faucet (see  
Service Instructions Section H).  
Slow Flow Rate from Hot Faucet  
Clean spray head (see service instructions section B).  
Sift grounds flat to set filter (see operation instructions  
section A).  
Dry Coffee Remaining in Brew Basket  
Check for mineral build up, clogs or kinks to water lines  
and fittings.  
 

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