by experience and is affected by hours of operation and
particle size being trapped. An optional vacuum inlet fil-
ter is offered and can help minimize the need or fre-
quency of cleaning the inlet screen.
To clean the screen, disconnect the flange from the
process piping. Remove the four screws and lock-
washers (Ref. 265/266). Remove the inlet flange (Ref.
260). Remove the screen (Ref. 261) and clean with
compressed air. After cleaning, install the screen and
inlet securing them with the screws and lockwashers.
Make sure the O-ring (Ref. 265) is in place prior to
securing the screws. Reattach the process piping to
the inlet.
3.5
Vacuum Inlet Filter (optional)
If the pump is equipped with an optional special vacu-
um inlet filter in applications where powder, dust or grit
is present, the filter cartridge should be cleaned on a
weekly basis, or as required, depending on the amount
of foreign particles to which the pump is exposed.
To clean the inlet filter, unsnap the lid clamps or remove
the knobs and lift off the filter lid. Remove cartridge,
being careful not to knock any foreign particles present
inside the canister into the pump suction. Clean foreign
particles from the canister with an air hose, and care-
fully back flush the filter cartridge with shop air. If the fil-
ter cartridge has been subjected to moisture or is
extremely dirty, it may need replacement.
3.6
Maintenance Chart
Note:
See the motor manufacturer’s manual for the
periodic motor maintenance.
Note:
Lack of proper maintenance can result in
blocked filters, radiators, oil lines, etc. This condition
can lead to excessive heat causing mechanical failure
or ignition of the oil vapors.
Daily:
Visually check oil level (see 3.1.1 and 3.1.2).
Weekly:
Check oil for contamination (see 3.1.3).
Inspect inlet filter (see Section 3.5).
Every three (3) or four (4) months, 500 to 750
hours of operation, or as necessary:
See 3.1.3
and 1.5. Drain and discard oil from the hot pump.
Replace the automotive-type oil filter and refill with
fresh oil through the fill plug (see 3.1.2 through 3.2).
Every nine (9) to twelve (12) months, or as
necessary:
Replace exhaust filter elements (see
3.3).
As necessary:
Check and/or clean the standard inlet
screen. If the optional inlet filter is used, replace the fil-
ter material as practice determines.
As necessary:
The radiator (Ref. 241), fan hood
(Ref. 244) and motor cover should be inspected regu-
larly for debris. Soiling prevents cool air intake and may
lead to overheating of the pump.
3.7
Overhaul Kit/Filter Kit
An overhaul kit containing a set of gaskets and O-rings,
vanes, bearings and bearing sleeves, shaft seals and
taper pins, is available from the factory. Also, a filter kit
containing oil drain plug, gaskets, automotive type oil fil-
ter, exhaust filter and synthetic baffle strainer is avail-
able from the factory. When ordering, please specify
pump size and model (a 4-digit suffix after size), and
serial number.
4.0
TROUBLESHOOTING
4.1
Trouble
The pump does not reach "blank-off" pres-
sure which is the lowest absolute pressure
(best vacuum) when running with the inlet
closed via a blank flange or a valve; or the
pump takes too long to evacuate the system.
"Blank-off" pressure can be measured by
using a good quality capsule gauge.
Possible Cause:
Contaminated oil is by far the most
common cause of not reaching the ultimate pressure.
Remedy:
Shut off the pump, after the operating tem-
perature has been reached, drain the warm oil from
pump and exchange the automotive-type oil filter
(where applicable), if necessary. Flush and fill the
pump with new oil and take a new "blank-off" measure-
ment after operating temperature is reached (at least
20-30 minutes).
Possible Cause:
The vacuum system or vacuum
piping is not leak-tight.
Remedy:
Check the hose and pipe connections for
possible leak.
Possible Cause:
The wire mesh inlet screen is
plugged (Ref. 261).
Remedy:
Clean the wire mesh inlet screen. Install an
inlet filter if the problem repeats frequently.
Possible Cause:
No oil or not enough oil in the oil
reservoir.
Remedy:
Shut off the pump, add the necessary oil, or
if oil seems contaminated, drain the balance of the oil
from the pump, exchange the automotive oil filter, and
refill with fresh oil. Flush if necessary.
Possible Cause:
The automotive-type oil filter is dirty
9
Summary of Contents for ULTRAVAC 2100
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