Preventive Maintenance; Pm Steps - Bunn Axiom Series Technical Training Manual

Preventive Maintenance

In order to maintain proper operation and long service life BUNN recommends performing the preventive main-
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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
Step 2: Rebuild brew valve, clean outlet fittings at tank.
□ 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)
□ Carefully remove the silicon hoses from the outlet tank fittings
□ Clean fittings using deliming tool (long end) or suitable tool
□ 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
Step 4: Clean and inspect Sprayhead clean spray head fitting.
□ Clean and inspect Sprayhead
□ Clean Sprayhead fitting using deliming tool
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.
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□ Turn on water supply and check for leaks
□ Plug AXIOM in at wall receptacle
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□ Allow tank to fill and heat to operating temperature
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AXIOM Training Manual
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