Overview, Functional Description; Versions Of The Qls System; Qls 301; Qls 401 - SKF QLS 301 Assembly Instructions Manual

3 Overview, functional
description

3.1 Versions of the QLS system

In the following you will find an overview of the most
important functions and equipment features of the pump
versions for the QLS system.

3.1.1 QLS 301

QLS 301 (with and without control)
• With follower plate
• With and without control
• With 12 VDC or 24 VDC
• With 120 V AC or 230 V AC
• With rear- or bottom-mounted SSV metering device
• With external SSV metering device.

3.1.2 QLS 401

QLS 401 (with and without control)
• With and without control
• With 12 VDC or 24 VDC
• With 120 V AC or 230 V AC
• With rear- or bottom-mounted SSV metering device
• With external SSV metering device
• With rear-mounted SSVDV metering device.
Fig. 3
Front and rear view
Legend to Figure 5:
1 Emergency lubrication nipple
Used to supply the connected lubrication points with
lubricant in the event of a pump fault or other difficulties.
2 Reservoir ventilation
This is used for bleeding the reservoir when filling with
lubricant and for ventilation of the reservoir during
operation.
3 Pump elements
The pump can be equipped with up to max. 2 pump
elements. Each pump element must be secured with a
suitable pressure limiting valve. Use plug screws to close
off unneeded outlets.
4 Metering device
Used for metering and distributing the lubricant, and also
for switching off the pump when the work cycles are
completed, by means of an indicator pin and a proximity
switch. There are different SSV and SSVDV metering
devices available for different applications.
5 Signal line
Fig. 4 Used for connecting the pump to an external control
device or signaling device.
6 Power supply
Used for connecting the pump to an external power
supply.
7 Pump housing
This contains the motor and (depending on the pump
version) various control circuit boards and possible
connections (rectangular/bayonet connector).
8 Membrane keypad
For displaying operational and error messages, and for
modifying parameters (programming) on pumps with a
control.
9 Filler nipple
Used to fill the reservoir with clean and suitable lubricant.
10 Reservoir
The reservoir stores the lubricant. Different reservoir
designs and reservoir sizes exist in accordance with the
pump variant.
14
Fig. 5