Table 4 Frequency of Element Replacement
Model No
Frequency of element replacement
OMT-100A
1500 to 2000 hours
OMT-200A
1000 to 1500 hours
If pumping is continued for a long time or if the oil mist trap is severely contaminated
with suction gas, it is recommended to disassemble and clean it, in addition to the above
checks, to maintain performance. For disassembly, contact your local ULVAC KIKO
representative.
5.3 Consumables
Table 5 List of Consumables
Description
Q'ty
Element 1
OMT-100A
Relief valve spring
1
Element 1
OMT-200A
Relief valve spring
1
Check valve spring
1
Common parts
O-ring (P-41)
1
5.4 Replacement
of
Element
If the element is clogged, the trap cannot separate oil mist completely. If much oil
mist is discharged when restarting the pump after a pause for more than 30 minutes,
replace the element. Scheduled replacement is recommended according to the element
replacement frequency in Table 4.
!
DANGER
If the vacuum pump is used to pump toxic gas, pump oil as well as oil mist trap will be
toxic. Beware of it in maintenance.
!
CAUTION
When replacing the element, wear rubber gloves, goggles and other protective wear. If
your hand is stained with vacuum pump oil, wash the stained portion with water and
soap. If oil is admitted into your eye, wash your eye with clean water for at least 15
minutes and then see doctor for treatment.
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<Replacement of element>
Refer to "7. EXPLODED VIEW" for the names of components.
(1) Make sure that the pump is shut down.
(2) Remove the top cover as shown in Fig. 3.
Fig. 3 Removal of top cover
(3) Remove the relief valve spring, OMT retainer and element from the case in that
order.
(4) Replace the element with a new one and center it with the OMS receiver to install
it.
Fig. 4 Installation of element
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