AXIOM
®
Training Manual
20
Preventive Maintenance
In order to maintain proper operation and long service life BUNN
®
recommends performing the preventive main-
tenance every 6 months. Individual customers will vary with some customers choosing not to receive preventive
maintenance.
Tools Required:
• 2 Flat head screwdrivers (1 small, 1 medium)
• Adjustable wrench
• Needle nose pliers
• Deliming tool (BUNN P/N: 38227.0000)
Prior to servicing the brewer:
• Disconnect the electrical supply
• Shut off water supply
PM Steps
Step 1: Remove probes from tank lid.
□ Remove top and front access panels
□ Drain tank using drain hose located behind front panel. Caution Hot Water!!
□ Remove thermistor probe (temp probe) from the top of the tank. Clean and inspect
□ Remove liquid level probes (2) from tank lid clean and inspect
□ Reassembly is the opposite of disassembly
Step2:Rebuildbrewvalve,cleanoutletttingsattank.
□ Remove wire leads from brew valve
□ Carefully remove silicon hose from brew valve
□ Remove mounting nuts
□ Remove 4 screws from valve
□ Replace plunger, spring and rubber seat using rebuild kit, (BUNN P/N: 11517.0008)
□ Carefullyremovethesiliconhosesfromtheoutlettankttings
□ Cleanttingsusingdelimingtool(longend)orsuitabletool
□ Reassembly is the opposite of disassembly
Step 3: Rebuild hot water faucet.
□ Replace hot water seat cup by unscrewing the bonnet assembly
□ Remove old seat cup
□ Install new seat cup, (BUNN P/N: 02766.0000)
□ Reassembly is opposite of disassembly
Step4:CleanandinspectSprayheadcleansprayheadtting.
□ Clean and inspect Sprayhead
□ CleanSprayheadttingusingdelimingtool
Step 5: Inspect brew funnel for missing or loose parts.
Step 6: Inspect water connection points for signs of leakage.
Step 7: Inspect power cord.
Step 8: Return AXIOM
®
to service.
□ Turn on water supply and check for leaks
□ Plug AXIOM
®
in at wall receptacle
□ Allowtanktollandheattooperatingtemperature
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