Multitech 1777.8/7-10 G3 - Manual (Page 15)

Caution
Multitec
15
Oil quality / Oil change
Quality: ISO VG 46.
The first oil change shall be carried out after 300 operating
hours, the following ones every 3000 operating hours.
Unscrew the screwed plug in the re-fill hole and in the drain hole.
Allow the bearing housing to drain completely, then plug the
drain hole again.
Fig. 16 Oil fill
Hinge down the constant-level oiler 638.
Pour in the oil through the hole after having hinged down the
reservoir of the constant-level oiler until oil appears in the
vertical portion of the connection elbow (Fig. 16). Then fill the
reservoir of the constant-level oiler with oil and snap it back into
operating position. After a short time check whether the oil level
in the reservoir has dropped.
It is important to keep the reservoir two thirds full at all times!
Lubricant quantities
Grease quantities
Pump size
Quantity per bearing unit in g
Pump size
Drive end Non-drive end
32 - -
50 / 65 15 -
100 / 125 25 15
150 40 30
Note: On some pump designs the rolling element bearings are
lubricated for life. These pumps are not provided with a
lubricating nipple on the bearing bracket.
Oil quantities
Pump size
Oil quantity in ml * )
Pump size
Drive end Non-drive end
32 330 330
50 500 330
65 490 510
100 / 125 880 920
150 1000 1040
*) oil quantity without oil fill in the reservoir of the constant-level oiler
Motor
Motors without lubricating nipple: The rolling element bearings
have been lubricated in the supplier’s factory for an operating
period of 15,000 h or 2 years under normal operating
conditions.
Motors with lubricating nipple: The rolling element bearings
must be re-lubricated at the intervals indicated on the motor
name plate (approx. 500 h).
7.2.3 Shaft seal
Mechanical seal:
The mechanical seal is maintenance-free.
Gland packing:
The nuts at the gland cover must only be tightened slightly. The
gland cover must be at right angles to the shaft. After the pump
has been primed and prior to start-up, make sure the gland
packing is set to allow a larger amount of leakage. After
approximately 1 operating hour, tighten the nuts at the gland
cover gradually until leakage has been reduced to individual
drops (approx. 7 l/H).
7.2.4 Coupling
If the flexible coupling elements begin to show signs of wear,
they must be replaced in due time and pump/motor alignment
must be checked.
7.3
Dismantling
If you need additional information or instructions please
contact KSB’s customer service !
7.3.1 General instructions
Drainage / Cleaning
If the pump was used for handling liquids posing health
hazards, see to it that there is no risk to persons or the
environment when draining the fluid. All relevant laws must be
heeded. If required, wear safety clothing and a protective mask!
The flushing liquid used and any liquid residues in the pump
must be properly collected and disposed of without posing any
risk to persons or the environment.
7.3.2 Preparations for dismantling
Make sure to switch off the pump unit before
starting any dismantling activities. Secure the
pump so as to make sure it cannot be switched on accidentally !
The shut-off valves in the inlet / suction and discharge pipes
must be closed and secured against inadvertent opening.
The pump must have cooled down to ambient temperature.
Pump pressure must have been released and the pump must
have been drained.
Noxious, explosive, hot or other hazardous fluids shall be
drained without posing any risk to persons or the environment.
We strongly recommend to flush the pump after drainage.
Flushing and cleaning the pump is an absolute necessity before
sending the pump to the workshop. In addition, the pump must
be supplied with a cleaning certificate.
After a prolonged period of operation the individual components
may be hard to pull off. We recommend to use a brand name
penetrating agent or a suitable puller.
Under no circumstances use force.
Dismantling must only be carried out in accordance with the
sectional drawings at the end of these operating instructions.
(see section 9 ”General assembly drawings”)
Heavy components must be sufficiently supported during
dismantling. The components shall be marked with their
sequence of dismantling, to make sure they will be
re-assembled in the correct sequence.
Thoroughly clean all dismantled components and check their
condition. Careful examination may help to find the cause for
pump failure, if any. If in doubt, replace the components. Always
replace parts which are subject to wear (gaskets, O-rings,
casing wear rings, rolling element bearings).