Section 5- Maintenance
Or Service Preparation
Pre~aring for Maintenance or Service
!W~~G!
Never assume the vacuum pumps ready for
maintenance or service because it is stopped. The
automatic stop-start control may start the vacuum
pump at any time.
The following procedure should be used for maximum
safety when preparing for maintemnce or service:
.
.
.
.
Per OSHA regulation 1910.147: The control of
Hazardous Ener~ Source (Lockout/Tagout),
disconnect and lock-out the main power switch
and hang a si~ at the switch of the unit being
serviced
Close shut-off valve ahead of the inlet valve and
after the air/lubricant reservoir (if so equipped) to
prevent any air flow through or pressure buildup in
the vacuum pump. NEVER depend upon a check
valve to isolate the system.
Manually vent the vacuum system to atmospheric
pressure.
Shut off water and pressurization system if it is water
cooled.
Page 43
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