Fristam Pumps FKL-150, Инструкция по эксплуатации и техническому обслуживанию, Страница: 10 / 50

Fristam Pumps
10
See the oil capacity listing on page 5.
P
ERIODIC
M
AINTENANCE
Periodically inspect the pump housing, cover and rotors for any signs of wear or damage. If wear is
present this could be a sign of over-pressurization, incorrect rotor gap or bearing wear.
T
EMPERATURE
D
IFFERNTIALS
Positive pump efficiency depends on internal clearances between the rotors and the pump housing. The
pump can withstand certain temperature changes based on the rotors. For example, if you are running
CIP solution at 180°F and your product is 50°F, that is a 130°F temperature differential. This differen-
tial is in the standard rotor range.
The temperature differential is a concern, because if there is a severe temperature change in the pump,
the shaft and rotors may expand inside the pump housing. This expansion can result in rotor to cover
or rotor to housing damage.
The clearances inside the FKL pump are extremely small, below are the recommended temperature
differentials.
FKL Temperature Differential Correct Rotor
∆
40°F standard rotors
∆
20°F high temperature rotors
Fristam recommends high temperature rotors for pumps that will be cleaned or steamed at elevated
temperatures.
C
LEANNINg RECOMMENDATIONS FOR
FKL
PUMPS
:
When you are running products or cleaning solutions with different temperatures, you need to allow
enough time for all of the wetted components inside the pump to reach a steady-state temperature
before you start the pump. If your process does not allow you to stop the pump during this transition,
you need to install rotors that provide larger clearances. Note: that the clearances inside the FKL pump
are extremely small.
Due to the use of a rotor bolt additional cleaning may be necessary if there is an o-ring failure. If one
of the following fail, rotor bolt o-ring, rotor washer o-ring, or rotor o-ring, the threaded hole on the
end of the shaft will need to be cleaned. We recommend removing the rotors and rotor bolts/washers
while the pump is being CIP’d. This will ensure that the internal threads are cleaned before production
resumes.
If the process lines are to be cleaned with the pump, use a by-pass loop around the pump during the
CIP mode to maintain pipe velocity. Once the wetted components are at a steady temperature, the
pump can be started and run around 100 RPM with a backpressure of at least 10 PSI. As the product
viscosity increases, the required backpressure may need to be increased as well.
S
EAL
R
EPLACEMENT
CAUTION! Begin all pump maintenance by disconnecting the energy source to the pump. Observe all
lock out/tag out procedures as outlined by ANSI Z44.1-198 and OSHA 1910.147 to prevent accidental
start-up and injury.
T
OOLS
R
EqUIRED FOR
S
EAL
R
EPLACEMENT
:
Soft-faced hammer
Screwdriver (flat blade)
1” diameter wooden dowel
4 mm Allen wrench
6 mm Allen wrench (FKL 400 only)
Torque wrench