Agilent Technologies TPS-compact X3580-64000, User Manual

Page: 304 / 312

17 Technical Information
Service Options
304/312 TPS-compact User Manual / 87-901-010-01 (F )
Troubleshooting Chart
Tab. 10
Problem Possible Causes Corrective Actions
TMP doesn’t
reach NORMAL
OPERATION
Scroll Pump motor thermal
protector open
Allow motor to cool. Identify cause of overload.
Vacuum system leak Locate and repair leak.
System will not
start
Excessive voltage drop Check size and length of cable.
Fuses burnt-out Check fuses and if necessary replace.
Poor ultimate
pressure
Vacuum system leak Locate and repair leak.
Water in TPS-compact Flush the system with air or dry nitrogen.
Solvent in pump Flush the system with air or dry nitrogen. Install trap
or filter.
Scroll Pump seals worn out Replace tip seals.
Poor conductance to TPS-compact Replumb with shorter and/or larger diameter tubing.
Hammering
noise
Scroll pump overheated Check ventilation to TPS-compact. Check ambient
temperature.
Debris in Scroll pump Flush the TPS-compact. Disassemble pump and
inspect.
Internal Scroll
Pump runs
intermittently
Motor thermal protector is cycling
open and closed.*
Allow the scroll motor to cool. Identify the cause of
the overload.
* The internal Scroll Pump is equipped with an auto-reset thermal motor protector.
This protector automatically shuts down the pump when it detects an overload
condition, and automatically restarts the pump when the motor has cooled to
within an acceptable temperature range.