Preventive Maintenance; Draining The Tank; Pm Steps - Bunn ITB Technical Training Manual

In order to maintain proper operation and long service life BUNN recommends performing the preventative main-
tenance every 6 months. Individual customers will vary with some customers choosing not to receive preventative
maintenance.
Tools Required:
• Slotted screwdriver
• Slip joint pliers
• Needle nose pliers
• Adjustable wrench
• Deliming Key (BUNN P/N: 38227.0000)
• Bristle brush (BUNN P/N: 00674.0000)
PM Parts:
• Kay-5 Sanitizer (BUNN P/N: 24634.0001)
• Reservoir Faucet Seat Cup (BUNN P/N: 00600.0000), recommended once a month for replacement.
Prior to servicing the brewer:
• Disconnect the electrical supply
• Shut off the water supply
• Remove the top panel
• Drain the tank (see below)

Draining the Tank

Step 1: Use a slotted screwdriver to remove the 7 screws secur-
ing the rear panel onto the chassis, remove the panel.
Step 2: Locate the hose clamp on the fill tube, and clamp off the
water line.
Step 3: Remove the clip securing the bottom end of the fill line to
the flow control and remove the line from the check valve.
Step 4: Place the water line over a sink or bucket and remove
the hose clamp to allow the tank to drain.

PM Steps

Step 1: Disassemble and clean the strainer assembly:
□ Use Channel lock pliers to remove the ¼" flare to ¾" hose thread adapter fitting
from the water inlet assembly
□ Use needle nose pliers to gently pull the strainer straight out.
□ Rinse the mesh screen to remove any debris build-up.
□ Reassembly is the opposite of disassembly.
Step 2: Disassemble and clean the flow controls.
□ Use adjustable wrench and pliers to remove and take apart the flow control assembly on the tank fill line, clean
the housing and .500 flow washer.
□ Use adjustable wrench and pliers to remove and take apart the flow control assembly on the dilution line, clean
the housing and .500 flow washer.
□ Reassembly is the opposite of disassembly.
Note: The flow washer and housing must be installed correctly. Water enters on the flat side or lettering side
of the flow washer and flex's the washer against the fitment housing.
To Tank
Step 2: Hose Clamp
Step 3: Remove snap clamp and hose
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