Replace torch water tube -33, Replace torch water tube – Hypertherm HD4070 Rev.8 User Manual
Page 143

OPERATION
1
HD4070
Instruction Manual
4-33
Hypertherm
027347 Tool
4070.37
1
2
3
5
4
Replace Torch Water Tube
Below are some problems and causes that you may find with a defective or improperly installed water tube.
Problem
Cause
Short electrode life
Water tube not screwed in tightly
Flow switch interlock shutting
Water flow restricted because
down the system
water tube is loose
Humming or rattling sound
Water tube bent or loose
coming from the torch
Turn OFF all power to the HD4070 system.
Remove consumables from torch. See page 4-23
Do not overtighten parts! Only tighten until mating parts are seated.
WARNING
T
he HD4070 power supply is designed to go into an idle mode if the retaining cap is removed.
However, DO NOT REMOVE CONSUMABLE PARTS WHILE IN THE IDLE MODE! Always disconnect
power to the power supply before removing torch consumable parts.
Remove water tube
Install new water tube
Replace consumables
see page- 4-15
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