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JDF S Preventive Maintenance
In order to maintain proper operation and long service life BUNN recommends performing the preventive mainte-
nance every 6 months. Individual customers will vary with some customers choosing not to receive preventive main-
tenance. Some of the PM items may require more frequent maintenance depending on the site conditions.
Tools Required:
•
Flat blade screwdriver
•
8 inch crescent wrench (2)
•
Needle Nose Pliers
•
Velcro Tape
•
Graduated measuring cup
•
Refractometer
•
Thermometer
•
Flashlight
•
5 gal. bucket
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Tube PM Kit BUNN PN: 39690.0000 (1 per dispense station)
•
Kay-5 Sanitizer (50 Count BUNN P/N: 24634.0001) (200 Count BUNN P/N: 24634.0000)
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BUNN refillable container (BUNN P/N: 39302.0000)
•
Condenser Cleaner
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Rubber gloves
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Safety goggles or face shield
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Fin Comb
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Mild non abrasive detergent and cloth
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Vacuum with soft brush attachment
Prior to servicing the brewer:
•
Sanitize the dispenser before you begin the preventive maintenance process.
•
Disconnect the water and electrical supply.
•
Assess placement of dispenser to perform PM process.
•
Check and make sure you have the necessary safety equipment of cleaning the condenser.
•
Remove the lower splash panel.
•
Remove the right side panel.
PM Steps
Step1: Remove inlet valve connector fitting and clean inlet valve strainer.
□
Using your hand and unscrew the valve adapter fitting and set aside.
□
Using the needle nose pliers gently grab the strainer tab and pull the strainer out of the valve.
□
Clean and rinse strainer of any sediment or mineral build-up.
□
Re-installation is the opposite of removal.
Step 2: Replacement of lamp in lighted door assembly.
□
Using a flat blade screwdriver, remove the five screws securing the outer door cover to the inner door.
□
Disconnect the door switch connector or connectors from the auxiliary switch CBA and set door cover aside.
□
Gently grab the failed lamp and rotate half turn until lamp connection studs are aligned up with lamp socket
opening and remove lamp.
□
Re-installation of new lamp is the opposite of removal.
Step 3: Remove and clean the mesh air filter.
□
Using your hand, grab the mesh filter triangle handle and pull the air filter from the dispenser.
□
Wash the air filter in warm soapy water and dry.
□
Using a flashlight, shine the light through the condenser to check for dirt between the fins. Inspect condenser fins
for straightness. Go to the next step of Cleaning the Condenser.
□
Inspect Velcro straps for adhesion to air filter and dispenser and be ready to replace after cleaning of the
condenser.
Rev. 05/19/09
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Summary of Contents for Bunn JDF S Series
- Page 1 JDF S Preventive Maintenance In order to maintain proper operation and long service life BUNN recommends performing the preventive mainte- nance every 6 months. Individual customers will vary with some customers choosing not to receive preventive main- tenance. Some of the PM items may require more frequent maintenance depending on the site conditions.
- Page 2 Step 4: Cleaning the condenser. □ Using a soft cleaning brush attachment, gently vacuum the condenser coil fins. □ Using a flashlight, shine the light through the condenser fins to re-check for cleanliness or dirt between the fins. □ Heavy build-up of grease in the condenser may require the use of a commercial condenser cleaner. □ Follow the manufacture warning and safety instructions along with how to instructions supplied with the cleaner. Step 5: Replacing the peristaltic pump tubing.
- Page 3 Step 6: Stir the contents of the cup, and use the refractometer (according to the manufacturer’s instructions) to check the brix %. Step 7: Adjust the pump speed (down to decrease the brix %; up to increase the brix %) to achieve the correct brix % as described in Pump Speed Adjustment. Step 11: If customer has a BUNN water filtration system installed before the dispenser, replace the filter or filter car- tridge. Rev. 05/19/09...