Leybold Vacuum Products, TRIVAC A, Dual Stage, Rotary Vane ...

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TABLE 6-1. TROUBLESHOOT1NG CHART (Continued)
Symptoms Trouble Area Probable Cause
Recommended
Corrective Action
Repair Steps*
8. Excessive lubricating c. Gas ballast valve (17) Valve (17) is open. Close valve (17) or use AF exhaust filter with oil return
fluid is consumed.
line.
Sec. 2-3-1
(Also see symptoms d. Lubricating fluid Motor is rotating in wrong Interchange the line ends. F-la
6 and 9) (cont'd.). is ejected out of direction.
intake tube (1). Check rotational lock bearing. F-lb
9. Lubricating fluid is Gas ballast valve (17) Flat gasket (4) is worn. Install new flat gasket (4). 8-5
leaking from the top
of the oil casing (12). Oil casing (12) is scratched Install new oil casing (12). 8-1 thru 8-7
below valve (17) flange.
10. Exhaust gas is leaking a. Intake tube (1) Flat gasket (4) is worn. Install new flat gasket (4). 8-1,8-2, & 8-4 or
from the top of the or gas ballast 8-5
oil casing (12). valve (17)
Oil casing (12) is scratched Install new oil casing (12). 8-1 thru 8-7
below tube (1) or valve (17).
11. The pump will not start. a. Coupling (37) Coupling and/or element is Properly install new coupling and/or elastic ++
and/or elastic worn or improperly installed. element.
element (36)
b. Shaft is seized Lubricating fluid is If needed, replace shaft, end plates (44/60), If needed 8-1
in bushing. contaminated. and/or center bearing (52). See Symptoms 1 and 2. thru F-17
Hole in rear-end plate +Clean hole. If necessary, replace shaft 8-1 thru 8-8;
(60) bronze bushing and/or end plate (60). if needed
is clogged. 8-9 thru F-17
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C)
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II)
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Hole running from bottom +Clean hole. If necessary, replace shaft
edge of front end plate (44) and/or end plate (44).
to bronze bushing is clogged.
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*This column contains the disassembly steps required to perform the corrective action. Some critical assembly steps are also listed.
If the section is not specified, the steps are located in Section 5.
+Use the general cleaning instructions at the beginning of Section 5-E.
++D-13, D-14 and F-12, except set pump on its oil-casing (12) end and lower the motor into alignment. If the module coupl ing is
worn, do 8-1 thru C-2, F-9, & F-12.
8-1 thru 8-8; if
needed 8-9 thru C-7,
C-9, C-13, F-9, F-10,
F-l1,&F-12;or
8-9 thru F-17