Maintenance; Seal Lubrication; Cleaning The Impeller; Impeller Replacement - Jung Pumpen V1d-01 Manual De Instalación Y Del Operario

Maintenance

Maintenance
Only qualified mechanics with proper tools and
knowledge should attempt to service this pump .
Heavy parts . use lifting gear of appropriate
capacity positioned directly over lift point(s).

Seal Lubrication

oil in the seal chamber should be changed after the first
300 operating hours, then each 1000 hours thereafter or
annually. the oil fill/oil drain opening is labled "oHl".
after cleaning and sanitizing the pump, drain all oil and
residue into a clean measuring container.
• If the oil is milky in appearance, it is contaminated
with water. refill pump with clean, fresh oil, using
amounts and type shown in Maintenance. Check oil
condition again after 300 operating hours.
• If the oil is contaminated with both water and
pollutants, the main seal must be replaced and
the oil changed. recheck oil condition after
300 operating hours.
NOTICE: Whenever the main seal is being serviced,
remove oil and replace with new oil at reassembly. use
only sae 5W-15W (Iso 22-44) mineral oil.
the filling quantity is shown in Product Specifications.
NOTICE: Fill oil reservoir with the exact quantity of oil
specified. the pump will become inoperable if overfilled.

Cleaning the Impeller

Hazardous voltage, hazardous cutter, and
possible unexpected starts . disconnect the electrical
power and keep your hands away from the pump inlet
opening when working on or handling the pump for any
reason. do not use automatic reset controls with this pump.
1. disconnect the electrical power supply.
2. disconnect the discharge piping (this step is not
necessary if you have a guide-rail lift-out system).
3. Hoist the pump out of the pit using the lift-out
system or the lifting chain (not the cord) and place
the pump in a suitable area where it can be cleaned.
4. remove all scale and deposits from the pump. Check
visual appearance of all pump housing screws and
mating surfaces. tighten any loose fasteners.
Risk of infection from pathogens (such
as hepatitis) which can collect on pump during
normal operation. submerge the complete pump in
a disinfectant solution (dilute chlorine bleach) for at
least one hour before disassembly.
For parts or assistance, call Jung Pumpen Customer Service at 1-800-642-5930
5. unscrew four 5 mm allen screws attaching the
volute and remove the volute casing. It may be
necessary to tap around the parting line with a lead
or rawhide hammer to loosen the casing.
Wear protective gloves. Worn impellers
can have sharp edges that could cut or scratch.
6. Carefully clean the impeller and volute surfaces.
Inspect for obvious cracks or damage.
7. reverse step 5 to reassemble the pump.

Impeller Replacement

1. remove four 5 mm allen screws that attach the
volute and remove the volute casing. It may be
necessary to tap around the parting line with a lead
or rawhide hammer to loosen the casing.
Wear protective gloves. Worn impellers
can have sharp edges that could cut or scratch.
2. Wedge the impeller with a piece of wood and
loosen the central impeller screw located in the
impeller hub.
3. loosen the impeller by striking it gently with a lead
or rawhide hammer, then slide it off the motor shaft.
4. Clean all exposed surfaces, including motor shaft.
5. Grease the shaft cover on the inside. DO NOT use
grease containing graphite (like Molykote).
6. assemble all impeller-mounting components and
tighten finger tight.
7. slide a new impeller over impeller mount.
8. set impeller-to-motor housing gap (X) to .007"
(2 mm). see Figure 6.
Figure 6: Impeller clearance
9. Block impeller with a piece of wood and tighten
central impeller screw to 48 ft-lb (65 nm).
10. attach motor unit to volute casing. Finger tighten
four 5 mm allen screws, then torque each to
5.9 ft-lb (8 nm). the cable entry point is opposite the
discharge opening.
X
6