Single Pass Cooler Inspection Procedure - EBARA 80?25 Installation Operation & Maintenance

EBARA Multi-Stage Dry Vacuum Pumps
5.10.2

Single Pass Cooler Inspection Procedure

DANGER
!
Respirators may be required when inspecting or cleaning coolers (Process
dependent).
WARNING
!
Wear protective gloves when performing maintenance on the coolers.
WARNING
!
Protective eyeware should be worn when inspecting or cleaning coolers.
WARNING
!
Allow the pump package to cool before attempting any maintenance. Wear
protective gloves when performing maintenance on the coolers.
Inspect the hot, or inlet side of cooler #3. This is the area that plugs first, and it can be
used to determine the amount of deposits in the other coolers. If the #3 cooler shows
heavy deposits, the other coolers should be inspected (and cleaned if necessary). If the
#3 cooler shows little deposits, the others need not be inspected.
To determine the approximate amount of process build-up in the cooler tubes, use the
following steps. This procedure takes approximately 2-3 hours to complete.
1. Shut off the pump and the Nitrogen flow; allow the pump to cool.
DANGER
!
Failure to shut off the Nitrogen flow could result in process gasses venting into
the work area and causing injury to personnel. (It is NOT necessary to shut off
the cooling water).
930601-P
Pump Maintenance
31