13
Maintenance Instructions
WARNING: Unauthorized machine modification or use of non-approved replacement parts may cause personal
injury and/or property damage and will void the manufacturer warranty
.
All mechanical equipment, no matter how well designed, will need repairs. A NorthStar water heater is no exception. At
times, a NorthStar water heater may be inoperable because repairs are required. NorthStar Customer Service will assist
in these repairs as needed, but if an inoperable water heater creates a major expense to your business then we strongly
recommend the following:
1. Have someone on staff who is trained in the operation of the water heater and is capable of making minor repairs and
performing all preventative maintenance procedures as outlined in the provided manuals.
2. Keep a stock of recommended service parts for maintenance and minor repairs.
I.) Recommended Service Parts List
Following is a list of the service parts we recommend
stocking.
Description
Part Number
Flow Switch
37537
Inlet Hose
37538
Electrode Kit
RWB5780U
Fuel Pump
RWB21844U
Ignitor
RWB51771U
Fuel Filter Element
RCR12T
Pressure Gauge
MV32154
II.) Maintenance Mode
Before performing any maintenance on the water heater,
it must be placed in maintenance mode.
A.) Turn off water supply
B.) Bleed water from system
C.) Turn off and unplug power cord
III.) Maintenance Schedule
What to Check
When To
Check
What to Do
Fuel Filter
500 hrs
Change
Tires
Each Use
Check Pressure
Hoses
Each Use
Check for Wear
Bolts
Each Use
Check for Loose
Bolts
IV.) Checking the Tire Air Pressure
A.) Remove air fill cap
B.) Fill tire to 20psi (1.4bar)
C.) Replace air fill cap
V.) Burner Fuel Filter
Drain water that has accumulated in the fuel filter bowl
and replace the filter as needed.
VI.) Checking the Hoses
WARNING: Do not use a finger or skin to check for
leaks. Escaping fluid under pressure has sufficient
force to penetrate the skin, causing serious injury.
Do not operate the pressure washer if the hose is
cracked, worn, or leaking.
A.) Check all hoses for leaks
B.) Check all hoses for worn areas
Air Fill Cap
Good
Bad
Bad
00426
00425
Water Drain
Filter
Air Fill Stem
