FLK Gas Sampling System - MPIP - Free

SQ256 Retraction Device
• Tighten the threaded bolt and nut (15).
• Traverse the carriage forwards and backwards. The carriage must not move jerkingly.
Note:
When setting, it must be ensured that the play between the chain wheel and chain is not too small.
Otherwise there will be increased wear on the chain wheel.
If the chain wheel has the appearance of high wear, then it must be changed.
To replace the chain wheel, the valve combination and the drive motor must be removed.
4.4 Three-phase squirrel-cage induction motor with worm drive
4.4.1 Three-phase squirrel-cage induction motor
Three-phase motors in IP65 protection conforming to DIN 40050 are completely enclosed, dust-proof and hoseproof.
The three-phase motor is provided with a durable paint coating for protection against corrosion when sited
outdoors.
The fresh-air intake must not be obstructed by dirt. Therefore, the motor should be frequently cleaned with
compressed air.
The ring bolt should be retightened if it has become loose during transport.
The maintenance periods for the rolling bearings are different depending on the speed, ambient temperature,
loading, etc.
During regreasing the bearings should be cleaned thoroughly after disassembly (e.g. with cleaning-grade gasoline
or clean petroleum) and dried. Then they are lubricated with a quality rolling bearing grease. About half the air
space between the rollers should be filled with grease.
Note:
With larger quantities of grease there is the danger of increased bearing heating.
4.4.2 Worm drive with splash lubrication
Due to its design, the worm drive is dust-proof and hose-proof. The three-phase motor is provided with a durable
paint coating for protection against corrosion when sited outdoors. The gearbox with splash lubrication is supplied
with lubricant ready for operation. With normal operating conditions and a lubricant temperature below about 80°C
the lubricant should be replaced after about 10,000 operating hours.
Irrespective of the operating period, the lubricant should be replaced at the latest after 2 to 3 years.
The gearbox has filling and drain screws. These enable the lubricant to be checked and also replaced without
disassembly.
If required, flushing oil (e.g. spindle oil - no petroleum or trichloroethylene) can be added to the old lubricant. After
a few minutes of running on no load, the mixture can be drained. When flushed a number of times with the
gearbox on no load, preferably with changes of direction of rotation, the residues of the old lubricant can be
collected and drained off. The new lubricant is added with the motor stationary. It is recommended that when
changing the lubricant, the consumable parts (bearings and seals) are checked and replaced if necessary.
For lubrication of the gearbox, soft and extensible gearbox oils C-LP ISO VG 220 to DIN 51502 and DIN51517
with good EP characteristics are suitable.
The lubricant must enable low friction and almost wear-free continuous operation. The damage level during the
gear rig test by the FZG-method to DIN 51354 should be above Level 12 and the specific wear below 0.27
mg/kWh. The lubricant should not froth, should protect against corrosion and not attack the rolling bearings, gears
and seals. Lubricants of different sorts must not be mixed, because otherwise the lubricating characteristics can
be impaired. A long service life is only ensured when the following listed lubricants or their certified equivalents
are used. The original lubricant can also be supplied from the factory in small drums (5 and 10 kg).
Protective EP gearbox oils as in the following table have been proven for gearbox operation:
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