

Turn manuals into instant answers
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Get instant access to all the maintenance information you need. Empower technicians to perform preventive maintenance with asset packages, ready to use right out of the box.
Find all the essential guides in one place.
Tensioning Guide
Belt-diagram
C-120 pulleys
+ 13 more
Pre-built workflows to keep your asset running smoothly.
Daily Electrical System Inspection
Replace Roller and Pulley
Install Engine B-120
+ 29 more
Integrate maintenance plans directly into your work orders.
Motion Industries
Applied Industrial Technologies
Electrical Brothers
+ 5 more
Access the parts list for your equipment in MaintainX.
Drive Motor
B2 Rollers
Tensioning System
+ 40 more

Lochinvar Boiler WHB399L
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Integrate maintenance plans directly into your work orders in MaintainX.
Heat Exchanger Cleaning
Safety Precautions
Ensure boiler is not frozen
Shut off power and gas to the appliance if frozen
Contact factory for further instructions if frozen
Turn off power to the boiler before any service operation
Shut Down Boiler
Follow 'To Turn Off Gas to Appliance' instructions
Do not drain the boiler unless exposed to freezing temperatures
Cooling and Access
Wiring Check
Safety Precautions
Ensure power and gas to the appliance are shut off if the boiler may be frozen
Verify that the boiler is not frozen before proceeding
Confirm that electrical power is turned off before starting any service operation
Wiring Inspection
Inspect all boiler wiring for good condition
Check that all wires are securely attached
Annual Inspection
Confirm that the boiler is inspected annually by a qualified service technician
1 Monthly Condensate Trap Inspection
Safety Precautions
Ensure the boiler is not frozen. If frozen, shut off power and gas immediately and contact the factory.
Turn off power to the boiler before starting inspection.
Condensate Trap Inspection
Check that the condensate trap is properly installed and connected to the condensate pipe under the boiler.
Inspect the condensate line for obstructions to ensure free flow of condensate.
Inspect the neutralizing kit (if installed) to ensure proper drainage and adequate neutralizing agent.
Post Inspection
Turn the power back on to the boiler.
Fill Water Check
Water Quality Testing
Conduct water quality testing prior to installing the appliance
Hardness Check
Enter the hardness level of the water (grains per gallon)
Is the hardness level between 5 and 12 grains per gallon?
Consult local water treatment companies for hard water areas (above 12 grains per gallon hardness)
If hardness is below 5 grains/gallon, mix in potable water to increase hardness
pH Level Check
Enter the pH level of the water
Boiler Maintenance
Safety Precautions
Ensure the boiler is not frozen
Shut off power and gas if the boiler is frozen
Contact the factory for further instructions if frozen
Turn off power to the boiler before any service operation
Annual Inspection
Inspect the boiler
Perform maintenance as per Table 12A
Periodic Maintenance
Access the parts list for your equipment in MaintainX.
Vent Kit, Lochinvar, 2 Inch
100157609
Vent Kit, Lochinvar, 3 Inch
100157610
Vent Kit, Lochinvar, 4 Inch
100157611
Vent Kit, Centrotherm, 2 Inch
ISLPT0202
Vent Kit, Centrotherm, 3 Inch
ISLPT0303
Vent Kit, Lochinvar, 2 Inch
100157609
Vent Kit, Lochinvar, 3 Inch
100157610
Vent Kit, Lochinvar, 4 Inch
100157611
Vent Kit, Centrotherm, 2 Inch
ISLPT0202
Vent Kit, Centrotherm, 3 Inch
ISLPT0303
Vent Kit, Lochinvar, 2 Inch
100157609
Vent Kit, Lochinvar, 3 Inch
100157610
Vent Kit, Lochinvar, 4 Inch
100157611
Vent Kit, Centrotherm, 2 Inch
ISLPT0202
Vent Kit, Centrotherm, 3 Inch
ISLPT0303
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Reduce Unplanned Downtime
Ensure your team follows consistent procedures to minimize equipment failures and costly delays.
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Lower Maintenance Costs
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