KSB Amarex KRT - Lubrication and Lubricant Change

7 Servicing/Maintenance
71 of 128
Amarex KRT
Topping up the coolant
903.34
411.34
Fig.40: Topping up the coolant
ü The pump set has been placed in a vertical position.
1. Close screw plugs 903.33 with joint ring 411.33.
2. Fill coolant through the filler opening (screw plug 903.34) until it overflows.
3. Pump off 1liter of coolant with a suction pump or drain it via screw plug
903.33.
ð The coolant level must be approximately 3cm below the filler opening.
4. Close screw plug 903.34 again, fitting a new joint ring 411.34.
Table32: Key to the symbols and codes
Symbol Description
FD
Always apply a liquid sealing agent (e.g. Hylomar SQ32M) to sealing
surfaces marked with this symbol.
7.2.3 Lubrication and lubricant change
7.2.3.1 Lubricating the mechanical seal (pump sets without cooling system only -
installation types S and P)
7.2.3.1.1 Intervals
Replace the lubricant every 8000 operating hours but at least every 2 years.
7.2.3.1.2 Lubricant quality
The lubricant chamber is filled at the factory with environmentally friendly, non-toxic
lubricant of medicinal quality (unless otherwise specified by the customer).
The following lubricants can be used to lubricate the mechanical seals:
Table33: Lubricant quality
Description Properties
Paraffin oil
or
white oil.
Alternative: motor oil
grades SAE10W to
SAE20W
Kinematic viscosity
at 104°F [40°C]
< 0.065ft/s
2
[<20mm/s
2
]
Flash point (to Cleveland) > 320°F [>160°C]
Solidification point (pour point) < -5°F [< -15°C]
Recommended lubricants:
▪ Merkur WOP 40 PB, made by SASOL
▪ Merkur white oil Pharma 40, made by DEA
▪ Thin-bodied paraffin oil No. 7174, made by Merck
▪ Equivalent brands of medical quality, non-toxic
▪ Water-glycol mixture