Troubleshooting Chart - Agilent Technologies TPS-compact 969-8217 Notice De Mode D'emploi

17 Technical Information
Service Options

Troubleshooting Chart

Tab. 10
Problem Possible Causes
TMP doesn't Scroll Pump motor thermal
reach NORMAL protector open
OPERATION
Vacuum system leak
System will not Excessive voltage drop
start
Fuses burnt-out
Poor ultimate Vacuum system leak
pressure
Water in TPS-compact
Solvent in pump
Scroll Pump seals worn out
Poor conductance to TPS-compact
Hammering Scroll pump overheated
noise
Debris in Scroll pump
Internal Scroll Motor thermal protector is cycling
open and closed.*
Pump runs
intermittently
* The internal Scroll Pump is equipped with an auto-reset thermal motor protector.
protector automatically shuts down the pump when it detects an overload
automatically restarts the pump when the motor has cooled to within
temperature range.
254/262
Corrective Actions
Allow motor to cool. Identify cause of overload.
Locate and repair leak.
Check size and length of cable.
Check fuses and if necessary replace.
Locate and repair leak.
Flush the system with air or dry nitrogen.
Flush the system with air or dry nitrogen. Install trap
or filter.
Replace tip seals.
Replumb with shorter and/or larger diameter tubing.
Check ventilation to TPS-compact. Check ambient
temperature.
Flush the TPS-compact. Disassemble pump and
inspect.
Allow the scroll motor to cool. Identify the cause of
the overload.
TPS-compact User Manual / 87-901-010-01
This
condition, and
an acceptable
(C)