Viking Pump TSM288: SL Series Lobe Pumps - Manual (Page 33)

fIGURE 128
SECTION TSM 288 ISSUE A PAGE 33 OF 36
6.3 lIP-sEal sETTING
dIsTaNCEs
Pump
Model
dimension
“X” (mm)
dimension
“X” (inch)
SLAS 4 0.16
SLBL 6 0.24
SLCS 5 0.20
SLDL 6 0.24
SLES 3 0.12
SLFL 8 0.31
SLGS 7 0.28
6.4 lUbRICaNTs
The recommended lubricant for use in the SL Series is an
EP00 grade, lithium based, extreme pressure grease intended
for ‘sealed for life’ units. Suitable for operating temperatures
between –30°C and 120°C (-22°F to 266°F) and a base
viscosity in the region of 200 cSt at 40°C (104°F).
The unit is shipped as standard with the recommended grade
listed above. Refer to manufacturers recommended operating
conditions concerning limitations, servicing and application. In
case of doubt, please consult the factory for details.
SLA = 0.25 Liters .......... (0.066 US gallons)
SLB = 0.7 Liters ............ (0.184 US gallons)
SLC = 1.1 Liters ............ (0.29 US gallons)
SLD = 2.2 Liters ............ (0.58 US gallons)
SLE = 4.6 Liters ............ (1.21 US gallons)
SLF = 8.2 Liters ............ (2.16 US gallons)
SLG = 12 Liters ............ (3.16 US gallons)
During the filling operation, lubricant should be directed at the
front bearings to ensure good circulation and coverage in this
area.
Care should be taken not to overfill the gearbox.
6.5 MaTERIal sPECIfICaTION
Rotors ............................ 316L Stainless Steel
Casing ........................... 316L Stainless Steel
Shafts ............................ 316L Stainless Steel
Head .............................. 316L Stainless Steel
Rotor Retainer ............... 316L Stainless Steel
Bearing Housing ............ Grade 220 Grey Cast Iron, Coated
No
flow
Irregular
flow
Under Capacity Pump Overheats Motor Overheats Excessive Rotor W
ear
Excessive
seal W
ear
Noise / V
ibration
seizure Pump
stalls on
startup
Causes action
Incorrect Direction of Rotation Reverse Motor
Pump Not Primed Expel Gas From Suction Line / Pump Chamber & Prime
Insufficient NPSH Available Increase Suction Line & Static Suction Head Diameter. Simplify Suction
Line & Reduce Length. Reduce Pump Speed & Product Temperature Product Vaporizing in Suction Line
Air Entering Suction Line
Remake Pipework Joints
Gas in Suction Line Expel Gas From Suction Line / Pump Chamber
Insufficient Static Suction Head Raise Product Level to Increase Static Suction Head
Product Viscosity Too High Decrease Pump Speed / Increase Product Temperature
Product Viscosity Too Low Increase Pump Speed / Increase Product Temperature
Product Temperature Too High Cool Product / Pumping Chamber
Product Temperature Too Low Heat Product / Pumping Chamber
Unexpected Solids in Product Clean System / Fit Strainer on Suction Side of Pump
Discharge Pressure Too High Check for Blockages / Simplify Discharge Line
Casing Strained by Pipework Check Pipe Alignment / Support Pipework
Pump Speed Too High Decrease Pump Speed
Pump Speed Too Low Increase Pump Speed
Seal Flush Inadequate Increase Seal Flush to Required Pressure / Flow
Bearing / Timing Gear Wear Replace Worn Components
6.6 TROUblE sHOOTING