Yantrika DWT 300, Инструкция по эксплуатации

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"Process Instruments and Calibrators"
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6.2
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6.6
Instruction Manual
Maintenance
Cleanliness and Lubrication:
The instrument and weights should be kept scrupulously clean. A soft cloth without loose threads may be used
for the same.
The screw of the screw pump may be lubricated every few months depending on use. A few drops of 20/40
multigrade oil or a smearing of grease may be used for the same.
Adaptors/Gauge connectors:
PU/Bonded Seals at the base of the gauge connectors&adaptors may wear our with time and usage. The
washers are easily replaced from extra washers provided in the toolkit.
Screw Pump:
The 'O' rings of the screw pump may wear out with time. Spare 'O' rings are provided with the tester for
maintenance. In order to change these 'O' rings, remove the bells and carriers from the tester. Unscrew both
LP and HP columns if the tester has electrical power rotation. The columns need not be removed if the tester
does not have electrical power rotation. Now remove the sheet metal cover of the tester. Unscrew the screw
nut, which is the outermost piece in the screw pump cylinder assembly and pull the screw along with the dual
area plunger out of the tester. Replace the 'O' rings with fresh ones taking care not to introduce any wrinkles or
twisting while installing the same. Close the cover and screw the columns back to restart work.
Changing the Hydraulic Fluid:
Turn the screw pump handle clockwise until it reaches its innermost position. Atleast one gauge connector
must be left open while doing this so that no pressure is generated unintentionally. Most of the oil will get
collected in the oil cup and may be removed using a syringe or sponge. Castrol HySpin EP 22 grade oil
supplied by us is recommended for the same.
Electrical Power Rotation:
Check power lead and plug pins. Check and replace Rubber 'O' belt if broken or worn out.
Ordering of Spare Parts :
Model number as well as serial number of the machine must both be quoted when ordering spares.