8. Servicing the product
8.1 Maintenance
WARNING
Electric shock
Death or serious personal injury
‐
Switch off the power supply before you start any work
on the product.
WARNING
Overhead load
Death or serious personal injury
‐
Do not attempt to lift the system or pump by the lifting
lugs or eyes of the driver or pump.
‐
No point loads must occur.
‐
Do not work under a suspended system or pump.
8.2 Maintenance schedule
To ensure satisfactory operation of the pumping equipment,
frequent inspection and periodic maintenance are required.
An inspection and maintenance log should be kept, and the
inspector must report any problems immediately. A suggested guide
for preventative maintenance for normal applications is given below.
Unusual applications with abnormal heat, moisture, dust, etc., may
require more frequent inspection and service.
Item
Action
Frequency
Packing,
packing box
Inspect for
excessive
leakage
First 150 hours of
operation, then
every 2000 hours of
operation or
quarterly
Packing,
packing box
Adjust gland and
replace packing
As necessary
Pump-motor
alignment
Check for change in
alignment
Frequently (at every
start and stop)
Vibration
Check for change in
vibration
Annually
Bearings
Lubricate (grease)
• Light Duty, approx.
10 hours/week
• Every 2000 hours
or at least once a
year
• Normal Duty,
approx. 8 hours/day
• Every 2000 hours
or at least every six
months
• Severe Duty,
approx. 24
hours/day
• Monthly
Fasteners
Check for loose
fasteners
Annually
8.2.1 Lubricant and sealant properties
For sealing low-pressure flange joints and similar applications, use
a product similar to Loctite® 515.
Lubricants with the properties mentioned in the tables below must
be selected for lubrication in standard applications.
Compon
ents
Maximu
m RPM
Ambient
operating
temperat
ure
NLGI
grade
Kinemati
c
viscosity,
ASTM D
445
Food
grade
Shaft
bearings
3600
-10 to
+250 °F
(-23 to
121 °C)
2
160 cST,
[104 °F (
40 °C)]
H-1
Inlet
manifold
bearings
Stuffing
box
packing
8.2.2 Recommended spare parts
The list of recommended spare parts will depend on factors such
as:
supplier lead times, if the pump is used for normal or severe duty
operation, and if a backup pump is available for use.
A suggested list of spare parts for intermittent or no-critical
operation:
•
stuffing box packing (13)
•
ball bearing set (16 & 18)
•
bearing seal set (47 & 169)
•
bearing cover gaskets (73B)
•
set of shaft sleeves (14 & 14A)
•
set of sleeve O-rings (14B)
•
set of volute rings (7)
•
set of impeller rings, if supplied (8)
•
Volute gasket (73A)
•
packing gland
•
studs and gland bolts.
In addition to the above list, a suggested spare part for continuous
or critical operation:
•
complete rotating element, preassembled.
8.2.3 Consumables
The following items are normally used in the maintenance of
pumping equipment:
•
lubricant (grease or oil)
•
cleaning materials
•
touch-up coating
•
hand tools
•
measuring equipment (feeler gauges, dial indicator, etc.).
Some items may vary depending on the type of unit.
18
English (US)