Maintenance
HPR400XD Auto Gas  –  806160  5-35
Coolant flow troubleshooting chart
Coolant error
(093) or (060)
Go to “pump/motor 
troubleshooting”
Order a replacement 
Check valve or your 
coolant will drain out at 
each consumable change
There is a kink in the return hose to 
the power supply. If there is not a kink, 
replace the hose.
Go to “steps to take before testing” on the next page
Go to test 1 Go to test 2
Go to test 7
Replace the flow switch
Go to test 3
Replace the torch 
If the flow shown 
On the CNC is 
> 0.9 gpm
Go to test 4
Go to test 5
Check your power supply outlet hose for 
kinks. If there are no kinks, replace the 
 hose set between the power supply and 
the high frequency console.
There is a kink or clog between the 
high frequency console and the 
power supply. If there is not a kink, 
replace the leads.
There is a kink in the leads between 
the high frequency console and the 
torch. If there is not a kink, 
replace the leads.
Go to test 6
Replace the pump, and inspect 
the shaft for damage
No flow 
Flow 
rate from 
bucket test
< 0.9 gpm
Flow 
rate from 
flow tube
< 0.8 gpm
Flow 
rate from 
bucket test
< 0.9 gpm
Flow 
rate from 
bucket test
> 0.9 gpm
Flow 
rate from 
bucket test
> 0.9 gpm
Flow 
rate from 
flow tube
> 0.8 gpm
Flow 
rate from 
CNC
> 0.8 gpm
Flow 
rate from 
CNC
< 0.8 gpm
Flow 
rate from 
CNC
< 0.9 gpm
Flow 
rate from 
bucket test
> 0.9 gpm
Flow 
rate from 
bucket test
< 0.9 gpm
Flow 
rate from 
bucket test
< 0.9 gpm
Flow 
rate from 
bucket test
> 0.9 gpm