Newco DB2A Installation instructions

DB2A INSTALLATION
REV 3-29-2006
DUAL BREWER AUTOMATIC
DB2A
INSTALLATION, OPERATION, AND TROUBLESHOOTING MANUAL FOR
DB2A AUTOMATIC BREWER WITH WARMERS & POUR-OVER
Model DB2A
8-1/2 W x 18 D x 33 H
4700 Total Watts, 23.3AMPS
120/208 V
Ship Wt approx. 54 LB’s
Decanters Not Included

2

DB2A
CONTROL SWITCH
LOCATIONS
3

4
PLUMBER'S INSTALLATION INSTRUCTIONS
CAUTION:Disconnect Power to brewer before proceeding with plumbing installation.
1) Attach water line to bottom PDS valve , rear of brewer .
2) Flush water line before installing brewer. Brewer should be connected to COLD WATER LINE for best operation.
3) Water pressure should be at least 40 lbs. For less than a 25 ft run, use 1/4" copper tubing and connect to 1/2" or larger water
line. For longer runs, use 3/8" copper tubing & connect to 1/2" or larger water line and provide an adapter fitting for
connection to the brewer. A dedicated water line is necessary for this machine.
4) If installed with saddle valve, the valve should have a minimum of 1/8" port hole for up to 25 ft run, and 5/16" port hole for
over 25 ft runs.
5) Manufacturer recommends connecting to copper tubing.
INSTALLATION INSTRUCTIONS
UPPER TANK SWITCH
WARNING: - Read and follow installation instructions before plugging or wiring in machine to electrical circuit. Warranty will be
dbvoid if machine is connected to any voltage other than that specified on the name plate.
FILL BREWER TANK WITH WATER BEFORE TURNING TANK THERMOSTATS OR HEATER SWITCHES ON !
1) Brewer is shipped with thermostat turned OFF, (full counter-clockwise position). Plug or wire in machine to appropriate
voltage as noted on the brewer serial tag. Serial tag is located on side of brewer.
2) Adjust timer to deliver desired amount of water (Timer is located behind front access panel). To brew into a regular 64 oz.
decanter little adjustment should be needed. Turn timer dial clockwise to increase volume of water, and counter clockwise to
decrease volume.
3) Place the decanters under brew baskets, turn on bottom two warmers, and using brew switches brew three brew cycles or
until water starts to drain into decanters.
4) Turn on tank heater switches. Allow 10 to 15 minutes for water in tank to heat to brewing temperature. (Additional water
may drip from brew baskets on initial expansion of water in the tanks). This will not occur thereafter.
5) After water has reached brewing temperature, thermostat will click off, heating noise will stop. Empty decanters and depress
brew start switches and run a cycle of water to remove expanded water from tanks. (Brew cycle may be canceled by turning
the warmer rocker switch back to the OFF position.)
6) Run one cycle for each tank to check for the proper temperature setting with an accurate thermometer. Take the temperature
of this water at a point below the brew basket opening, at the start of the brew cycle and when the decanter is half full.
Recommended temperature of the water is approximately 195 F. Adjust brew volume by adjusting the brew timer up or
down .
7) In higher altitude locations (5000 feet above sea level) the thermostat may have to be adjusted lower to prevent
boiling.
8) Water volume may need readjustment after brewing a decanter of coffee. (See next page)

COFFEE PREPARATION PROCEDURES
1) Place filter into brew basket.
2) Put the proper amount of coffee into the filter.
3) Slide the brew basket into holder.
4) Place empty decanter on warmer located directly under the brew basket and turn corresponding warmer switch to ON
position.
5) Press “Brew” switch, switch will beep, and amber light will blink.
6) Hot water will be delivered through the sprayhead. This distributes the hot water evenly over the coffee bed within the brew
basket. The coffee brew will drain from the brew basket into the decanter below.
7) The resultant coffee brew should be crystal clear and have the desired properties attainable through excellent extraction.
8) TURN OFF WARMER WHEN NOT IN USE. (Red light indicates warmer is on.)
9) To clean brew basket simply remove from brew rails and dump filter into waste basket. The brewing process, as described
above, can now be started again.
DELIMING
To prevent liming problems in tank fittings remove sprayhead and insert deliming spring all the way into the tank. When
inserted into tank properly, no more than ten inches of the spring should be visible at the sprayhead fitting. Saw back and forth five or
six times. This will keep fittings open and clear of lime. In hard water areas this should be done everyday. This process takes
approximately one minute. In all areas the sprayhead should be cleaned at least once a week. Where bad liming has already occurred,
a new complete tank assembly may be installed. Deliming spring will not go in overflow orifice. (see diagram below)
DELIMING SPRING PN 120127 (INCLUDED)
Overflow
orifice
Sprayhead
outlet
WARRANTY
Refer to Warranty Agreement between TDL Group, BBC Sales, and Newco Enterprises.
5

6
TROUBLE SHOOTING GUIDE
SYMPTOM POSSIBLE
CAUSE WHAT TO CHECK REMEDY
CAN'T START BREW CYCLE
1. No water.
2. No power.
3. Warmer switch not on
4. Brew start switch.
5. Timer or timer harness.
6. Solenoid valve.
1. Incoming water lines & water shut
off valve.
2. Fuse or circuit breaker.
Power cord and plug connections.
3. Switch is on and lighted red,
continuity
4. Switch continuity.
(Normally closed.)
5. Wire leads to solenoid and
white 3-pin connector.
6. (A) Voltage at solenoid valve
terminals. Start a brew cycle and
check for 120 volts AC.
(B) If voltage is present at
terminals, check for water at line
pressure on the inlet side of
solenoid valve.
1. Be sure water shut off is open.
2. Replace or reset circuit protector
3. If warmer switch does not make and
break contact, replace warmer switch.
4. If brew start switch does not make and
break contact, replace brew start switch.
5. Make sure these connections are tight. If
so, and all else checks out OK, replace
timer.
6. (A) If voltage is not present at terminals,
refer to steps 2 through 5.
(B) If voltage is present at terminals and
water at line pressure is present on the
inlet side of the solenoid, but not present
on the outgoing side, replace solenoid.
NO HOT WATER
1. Tank heater.
2. Hi-limit thermostat or main
thermostat.
1. Check the voltage at the tank
heater terminals. Voltage should be
as indicated on the serial tag (on
rear of brewer.)
2. Check the voltage between the
VIOLET/RED wire on the tank
element and the incoming terminal
(VIOLET/BLACK) on tthe hi-limit
thermostat, then the outgoing
terminal (VIOLET/BLACK) on the
hi-limit thermostat.
1. (A) If correct voltage is present at the
tank heater terminals and water in tank is
not being heated, replace the tank heater.
(B) If voltage is not present at the tank
heater terminals refer, to step 2.
(C) If incorrect voltage is present at the
tank heater terminals, check voltage at
outlet.
2. (A) If voltage is present on the incoming
terminal of the hi-limit thermostat, but
not on the outgoing terminal, replace the
hi-limit thermostat.
(B) Check voltage at the terminal blocks.
If voltage is not present check outlet or
circuit breaker.
(C) If voltage is not present on the
incoming terminal of the hi-limit
thermostat, replace the main thermostat.
DRIPPING
1. Not siphoning properly.
2. Solenoid valve not seating
properly.
1. Water should flow freely from the
sprayhead.
2. Solenoid valve assembly.
1. (A) Clean sprayhead holes.
(B) Check tightness of sprayhead tube.
(C) See "DELIMING" , Page 5.
2. Be sure spring is in place and any
particles are cleaned from valve seat. If
valve seat is worn or mutilated, replace
solenoid valve.
STEAMING OR SPITTING
AROUND FUNNEL
1. Main thermostat.
2. High altitude.
1. Thermostat points stuck or out of
calibration.
2. Located above 5,000 feet.
1. (A) Adjust thermostat.
(B) Thermostat should be calibrated or
replaced.
2. See "INSTALLATION
INSTRUCTIONS", Page 4..
WATER KEEPS RUNNING
1. Solenoid valve.
2. Start switch.
3. Timer
1. Refer to "DRIPPING", Step 1.
2. Remove wires from switch and
check continuity.
3. Solid state timers are not
repairable. If timer will not shut
off, replace timer.
1. Refer to "DRIPPING", Step 1.
2. If start switch does not make and break
contact, switch should be replaced.
3. Replace timer.

7
TROUBLE SHOOTING GUIDE
SYMPTOM POSSIBLE
CAUSE WHAT TO CHECK REMEDY
IRREGULAR YIELD
1. Not siphoning properly.
2. Timer.
3. Fluctuating water pressure.
4. Solenoid valve.
5. PDS valve
1. Refer to "DRIPPING", Step 1.
2. Timer consistency. Time several
brew cycles.
3. Water pressure.
4. Refer to "DRIPPING", Step 2.
5. Possible defective flow
control.
1. Refer to "DRIPPING", Step 1.
2. If times are irregular, replace timer.
3. If pressure fluctuates 10-20 PSI during
operation of brew cycle, add a pressure
regulator to inlet side of brewer, set to
lowest pressure level registered. Adjust
timer to yield correct water level.
4. Refer to "DRIPPING", Step 2.
5. Replace PDS valve
.
DRY COFFEE REMAINING
IN BREW BASKET AFTER
BREWING
1. Filters.
2. Not siphoning properly.
3. Improper loading of the brew
basket.
1. Are correct filters being used.
2. Refer to "DRIPPING", Step 1.
3. Filter and coffee in brew basket.
1. Insert correct filter.
2. Refer to "DRIPPING", Step 1.
3. Filter should be centered in the brew
basket and coffee bed should be level.
WEAK COFFEE
1. Filters.
2. Not siphoning properly.
3. Improper loading of brew basket.
1. Are correct filters being used.
2. Refer to "DRIPPING", Step 1.
3. Filter and coffee in brew basket.
1. Insert correct filter.
2. Refer to "DRIPPING", Step 1.
3. Filter should be centered in brew basket
and coffee bed should be level.
SOLENOID CHATTER OR
HOWLING
1. Brewer connected to hot water
line.
2. Vibration.
3. High water pressure.
4. Water hammer.
5. 60 cycle vibration.
1. Incoming water line.
2. If brewer is on a metal stand or
counter, neither the bottom pan
nor copper tubing to the brewer
should touch the counter.
3. Water pressure on incoming line.
4. Incoming plumbing.
5. Nut on top of solenoid.
1. Brewer should be connected to cold
water line.
2. Adjust as necessary.
3. If water pressure is over 90 PSI install a
pressure regulator and adjust to 50 PSI.
4. This is not the fault of the brewer and can
usually be corrected by rearranging some
plumbing or adding an air chamber to
the incoming water line.
5. Nut should be tight. Tighten as required.
COLD WARMER STATION
1. Warmer - defective.
2. Warmer ON/OFF Switch.
3. Bad harness.
1. Voltage at warmer terminals
should be 120 volts AC.
2. If voltage is not present on warmer
terminals, check continuity of
switch.
3. Check connections between
harness and switch, and between
switch and warmer.
1. If voltage is present on terminals, but
warmer will not heat, replace warmer.
2. If switch does not make and break
continuity when turned off, replace
switch.
3. All connections should be tight.

DB2A
ACCESS
PANEL
COMPONENTS
8

REPLACEMENT
PART DIAGRAM
FRONT VIEW
9

55
54
133
32
3
47
4
34
REPLACEMENT
PART DIAGRAM
REAR VIEW
10