Putting Into Operation; Starting The Pump - Packo AX Instruction Manual

The temperature of the quench liquid must remain
below 60 C, if it rises above this temperature a
method of cooling must be arranged or a quench
should be used. The versions I and J are con-
nected in this second way (with reservoir).
In both arrangements the pressure in the
quench chamber must never be greater than
0.2 bar!
For type P or K (fig. 3) (double pressurized seal)
quench configuration the pressure in the quench
chamber must always be at least 1 bar higher
than the pressure on the inlet of the pump for
pumps with open impeller and at least 4 bar
higher than the pressure on the inlet of the pump
for pumps with semi-open or closed impeller.

4.8. Putting into operation

Pumps that are used for pumping
foodstuffs have to be cleaned before
the first use.
If the pump has been stored for a long time,
first check by hand that the impeller turns freely.
During starting up, the direction of rotation must
be checked. For types FP, NP, CRP, IRP, 4100,
4600, KNM, 63, 66 and 68, this has to be carried
out with an empty pump. For all other types the
pump must first be filled with liquid. After filling
with liquid, close the valve in the discharge pipe
almost completely and open all the valves in the
suction pipe completely. For AX pumps, start
with all valves completely open.
For multistage pumps (FMS and NMS) the pres-
sure in the quench chamber is the same as the
pressure on the outlet of the pump. The quench
chamber is connected to the water supply at the
bottom without the throttle. A valve should be fitted
at the top of the outlet to regulate the flow rate to
at least 10 litre per hour and a pressure gauge
should be fitted between the outlet and the valve
to check the pressure in the quench chamber.
Special devices are widely available to regulate
the flow and pressure in the quench chamber and
PACKO strongly recommends that they are used.
Fig. 3
For checking direction of rotation, start the
pump and stop it immediately. Have a look to
the motor fan (never remove the fan cover!) and
notice the direction of rotation. The right direc-
tion is indicated with an arrow on the nameplate
of the pump. When the motor is running in the
wrong direction, switch off power, disconnect
two phases in the terminal box of the motor and
change them. Reconnect according procedure
described in 4.4. Recheck direction of rotation
and make sure the motor is running in the right
direction.
For pumps on pedestal with oil lubrication, regu-
late the oil level to the middle of the gauge-glass.
The oil used must have a viscosity according to
ISO VG 68. The solid stainless steel plug of the
85