
12
V-BELT DRIVE
Before attempting to tension the V-belt drive it is imperative that the sheaves be properly aligned. V-belts should be replaced
in sets and the sheaves should be positioned so as to allow the belts to be placed in the grooves without rolling them onto the
sheaves. The following tensioning steps can be safely followed for all belt types, cross sections, number of belts per drive, or type
of construction.
1. With belts properly in their grooves adjust the sheaves until all slack has been taken up.
2. Start the drive and continue to tension the V-belt(s) until only a slight bow on the slack side of the drive appears while operating
under load conditions.
3. After 24 to 48 hours of operation the belts will seat themselves in the sheave grooves. Further tensioning is then necessary as
described in Step 2.
The belts should not slip if they are correctly adjusted and the correct starting procedure is used. A screeching noise at start-up
may indicate the belts are too loose. Belt dressing should not be used on V-belts. Sheaves and V-belts should remain free of oil and
grease. Tension should be removed from belts if the drive is to be inactive for an extended period of time.
OIL MIST ELIMINATORS
KT-VFP Series KT Pumps are supplied with integral, dual element, high efficiency oil mist eliminators. The KT-840VFP and KT-
1350VFP have a vertically attached OME housing and elements.
The KT-840VFP and KT-1350VFP use a Suckback Kit, which uses an external flexible tube connected from the upper box of the OME
to the metering valve of the gas ballast assembly to return oil dropout from the filters to the pump.
If any of these pumps are to be run, for extended periods of time, at pressures above 150 torr, consult the factory for High Pressure
Oil Suckback Kits. These Kits allow oil to be returned directly to the pump suction.
BELT GUARD LOCK
The vacuum pumps are supplied with a hinged and locked belt guard section for ease of maintenance when changing a drive
belt or checking the belt tension. The cam type lock is operated with a 5/16” or 8mm hex wrench inserted through the grommet in
the guard, on the suction side of the pump. Rotate the wrench in a counterclockwise direction to release the lock. The door may
then be opened. The door section may be lifted off the hinges if necessary. When closing the door be sure that the alignment pins
go into their mating holes which are just above and below the lock mechanism. Rotate the hex wrench in a clockwise direction to
engage the lock and secure the door. Leave a slight gap [approx. 1/8” between the sections. Remove the hex key before starting
the pump.
CAUTION: Do Not open the belt guard while the pump is operating, or operate the pump without the door section
in place and locked.
PANEL REMOVAL AND INSTALLATION
The LP KT-LP Series Pumps are supplied with panels to cover the drive and non-drive sides of the pump, as well as a hinged door to
allow access to the oil drain valve and the gas ballast valves. The panels are secured with snap type fasteners to allow removal for
access to the drive belts and the pump itself. To remove a panel, grasp it at its lower sides and pull out to release the lower catches,
then slide your grip the sides and pull out at the top to release the upper catches. To attach a panel, align the strikes to the center
of the latches at the top of the panel and push in firmly to engage. Swing the lower part of the panel into position and push in to
engage.
CAUTION: Do Not remove the drive side panel while the pump is operating, or operate the pump without the drive
side panel in place.
DISMANTLING & REASSEMBLING
DISMANTLING
The following steps are for complete disassembly of the pump, however the pump should be disassembled only to the extent
necessary for servicing. Refer to the illustrations and parts list as needed. Note that the open head is the head through which the
shaft extends, and closed head is head on which the oil pump is mounted.
Содержание KT VFP Series
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Страница 20: ...20 KT 840VFP KT 1350VFP OIL MIST ELIMINATOR ...