ONE 7TS – Maintenance
DATA SHEET A[d]:
COMPRESSION HEAD
Checking wear and replacing of plungers if needed
ATTENTION:
This procedure must be performed after setting machine to maintenance mode (see paragraph 7.3.3)
RESOURCES AND EQUIPMENT
: MAINTENANCE TECHNICIAN
FREQUENCY
: EVERY 1500 HOURS
TIME REQUIRED
: 30 MINUTES
DESCRIPTION:
VISUAL INSPECTION
GENERAL
The plungers are subject to normal wear, which can increase in particular operating conditions, such as:
- insufficient lubrication water;
- washing with inadequate solutions;
- non perfect alignment, caused by loose fixing with guide piston.
The type of piston installed on the machine is indicated in the TECHNICAL DATA SHEET enclosed in chap-
ter 11 of this manual.
The chrome pistons must be replaced when they show deep scratching or peeling on the surface as this
prevent optimal seal on packings and lead to faster wearing out.
- It is absolutely necessary to avoid dry operation of the pistons even for a limited period of time; the tem-
perature generated on the surface of the piston by friction can lead to breakage when the cooling water
is opened
- Rapid passage from hot to cold fluid must be avoided also in the compression head, where the piston
moves alternatively
- The temperature of the water must be in the specified range (+10÷+25 °C).– TECHNICAL
SPECIFICATIONS enclosed in chapter 11 of this manual.
- Temperature variation over time must be of 70 °C in 15 minutes (approximately 5 °C per minute).
The use of inadequate washing solutions, or incorrect concentrations and temperatures, can lead to corrosion of pis-
ton surfaces and thus cause early wear of packings.
Piston surface damage caused by corrosion is not covered by the manufacturer’s warranty .
In case of serious wearing out or breakage of the plungers, they need to be replaced as follows:
page 7.36
This manual is property of
GEA Niro Soavi S.p.A.
and no part of it may be reproduced.
Содержание ONE 11TS
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