Chapter 8 - Maintenance Guidelines; Purpose Of The Maintenance Guidelines; Explanatory Notes On The Stitch- And Hour Counter; Maintenance Intervals - Bernina 330 Service And Maintenance Manual

Chapter 8 – Maintenance Guidelines

8.1 Purpose of the Maintenance Guidelines

• The technician is given guidelines for carrying out the service.
• This improves service- and repair quality.
• The dealer or service technician can calculate the expected maintenance costs for the sewing
machine user transparency.
• Calculable maintenance costs offer the opportunity for Maintenance contracts. These result in
additional business, and a degree of customer retention that should not be underestimated.
• Same service quality worldwide.
• The wear-and-tear-parts definition helps to identify (unjustified) warranty claims by the customer,
mainly in the case of intensive use.
• Defined wear-and-tear parts are subject to a charge; exempt are the parts declared in the spare-parts-
warranty extension (BERNINA warranty provision).
• Compliance with Maintenance intervals allows system functioning to be ensured and increases the
service life of the sewing and embroidery machines.
• Should the customer not comply with the Maintenance intervals, the guarantee may be limited.
The Maintenance guidelines consist of the following:
• The wear-and-tear-parts definition.
• The maintenance check list according to which mainentance work is carried out.

8.2 Explanatory notes on the stitch- and hour counter

Refer to Chapter 6 Test 5 Hour counter

8.3 Maintenance intervals

To calculate the Maintenance intervals, an average sewing speed of about 500 S.P.M. is assumed.
BERNINA International AG · Seestrasse 161 · CH-8266 Steckborn · Switzerland
in this Service and Maintenance Manual.
Maintenance Stitch counter
interval
1 1'000'000
2 2'000'000
3 3'000'000
4 4'000'000
5 5'000'000
6 6'000'000
7 7'000'000
8 8'000'000
9 9'000'000
10 10'000'000
11 11'000'000
12 12'000'000
13 13'000'000
14 14'000'000
15 15'000'000
16 16'000'000
17 17'000'000
18 18'000'000
19 19'000'000
20 20'000'000
Year
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
60