Xylem Z8 ZR8 Z10 ZR10 Z12 ZR12 - Manual (Page 36)

Installation, Operating and Maintenance Instruction
page 36
To ensure optimum availability, we recommend
that suitable quantities of spare parts are held in
stock, especially if these are made from special
materials because of the longer delivery times.
Number of Spare Parts
P
Spare Parts
1 - 2 3 4 5 6 - 7 8 - 9 10/more
Impeller 1 x N 1 x N 1 x N 2 x N 2 x N 3 x N 0,3 x N x P
Guide wheel or multi-stage
casing 0,5 x N 0,5 x N 0,5 x N 1 x N 1 x N 1,5 x N 0,15 x N x P
Joints for pump casing
sets 4 6 8 8 9 12 0,15 x N x P
Bearing bush sets 2 2 2 3 3 4 0,5 x N x P
Bushing (if present) 2 2 2 3 3 4 0,3 x N x P
Shaft 1 1 2 2 2 3 0,3 x N x P
Non-return valve 1 1 2 2 2 3 0,3 x N x P
Other joints sets 4 6 8 8 9 10 1 x N x P
P = Number of pumps (incl. stand-by pumps)
N = Number of steps
Ordering spare parts
When ordering spare parts, please supply the following
information:
 Type:
______________________________________________________________________
 Order no.:
_______________________________________________________________
 Sectional drawing:
__________________________________________________
 Part designation:
_____________________________________________________
All the information is given in the relevant sectional
drawing.
11.2 Reserve pumps
It is essential that a sufficient number of stand-
by pumps are kept ready for use in plants where
failure of a pump could endanger human life or
cause damage to property or high costs.
Regular checks should be carried out to ensure
that such pumps are always ready for use (see
Point 8).