EBARA EFQT-2 - Manual (Page 35)

EBARA Fluid Handling 34
Bearings
(Figure 2)
The bearing housing was fully lubricated when
shipped from the factory. Check the oil level
regularly through the sight gauge. When lubrication
is required, add SAE No. 30 non-detergent-oil
through the hole for the air vent (11). Do not over-
lubricate. Over-lubrication can cause the bearings
to overheat, resulting in premature bearing failure.
NOTE
The white reflector in the sight gauge must be
positioned horizontally to provide proper
drainage.
Under normal conditions, drain the bearing
housing once each year and refill with
approximately 28 ounces (0.8 liters) clean oil.
Change the oil more frequently if the pump is
operated continuously or installed in an
environment with rapid temperature change.
CAUTION!
Monitor the condition of the bearing lubricant
regularly for evidence of rust or moisture
condensation. This is especially important in areas
where variable and cold temperatures are
common.
For cold weather operation, consult the factory or a
lubricant supplier for the recommended grade of
oil.
Power Source
Consult the literature supplied with the power
source, or contact your local power source
representative.
Periodically, the valve should be removed for
inspection and cleaning. When reinstalling the relief
valve, apply ‘Loctite Pipe Sealant with Teflon No.
592’, or equivalent compound, on the relief valve
threads. Position the valve as shown in Figure 1
with the discharge port pointing down.
Final Pump Assembly
(Figure 1)
Install the shaft key (16, Figure 2) and reconnect the
power source. Be sure to install any guards used
over the rotating members.
DANGER!
Do not operate the pump without the guards in
place over the rotating parts. Exposed rotating
parts can catch clothing, fingers, or tools,
causing severe injury to personnel.
Install the suction and discharge lines and open all
valves. Make certain that all piping connections are
tight, properly supported and secure.
Be sure the pump and power source have been
properly lubricated, see LUBRICATION.
Remove the fill cover assembly and fill the pump
casing with clean liquid. Reinstall the fill cover and
tighten it. Refer to OPERATION, Section C, before
putting the pump back into service.
LUBRICATION
Seal Assembly
(Figure 2)
Before starting the pump, remove the vented plug
(8) and fill the seal cavity with approximately 20
ounces (0.6 liters) of SAE No. 30 non-detergent oil,
or to a level just below the tapped vented plug hole.
Clean and reinstall the vented plug. Maintain the oil
at this level.