DFD6361-Maintenance - 第668页
F-98 5-1. Re placing the Consumable Parts of the Spinne r High-Pressu re Pump Safety ite ms for repl acing the c onsumable par ts of the spi nner hig h-pressure p ump CAUTION W he n y ou perform mai ntenance wi th the ou…
F-97
5. Consumables Whose Replacement Intervals
Differ Depending on the Machine Use
Conditions
Summary of this section
This section describes the consumables whose replacement intervals differ
depending on the machine use conditions.
Section No. Title Contents
5-1 Replacing the
Consumable Parts of the
Spinner High-Pressure
Pump
- Procedures for replacing the cap
seal
- Procedures for replacing the U-
packing
- Procedures for replacing the
wear ring
5-2 Replacing the Fluorescent
Lamp
- Procedures for replacing the
fluorescent lamp
5-3 Replacing the UV
Irradiation Lamp
[Optional Accessory]
- Procedures for replacing the UV
irradiation lamp
5-4 Replacing the Controller
for Wheel Coolant Water
Flow Rate
- Procedures for replacing the
controller for wheel coolant
water flow rate
5-5 Replacing the Circuit
Board of Electrical
System due to Battery
Life End
- Replacement of the circuit board
of electrical system must be
performed by Disco Service
engineers.
F-98
5-1. Replacing the Consumable Parts of the Spinner
High-Pressure Pump
Safety items for replacing the consumable parts of the spinner high-pressure pump
CAUTION
When you perform maintenance with the outer cover removed,
observe the following precaution. If you stand the removed outer
cover against the machine, you may receive injury by the cover if it is
toppled by the earthquake or like that.
After taking off the outer cover for maintenance purposes, store it
sufficiently away from the working area.
NOTICE
When the pump pressure does not increase even after replacing its
consumable parts (cap seal, U-packing and wear ring), the metal
parts such as a piston may be worn. In this case, the spinner high-
pressure pump needs an overhaul. Please make contact with Disco's
sales representative.
F-99
Replacement timing of consumable parts of the spinner high-pressure pump
When the spinner high-pressure pump is used for a long time, the cap seal, U-
packing and wear ring of the pump become worn and causes a degradation of
pressurization effect.
In this case, it is necessary to replace the cap seal, U-packing and wear ring as
the consumable parts.
To know the standard replacement timing, calculate the hours and days of use
as follows.
[Standard replacement timing (hours)]
Obtain the standard replacement timing after use in hours, h, using the
following expression (5.1.1).
p
h
6280
= .........................................................(5.1.1)
h: Hours of use (h)
p: Discharge pressure of the pump (MPa)
If the hours of spinner cleaning reaches h, replace the cap seal, U-packing and
wear ring.
[Standard replacement timing (days)]
If the cleaning time for one workpiece is constant, you can obtain the standard
replacement timing after use in days, d, using the following expression (5.1.2).
nH
h
d
×
=
........................................................(5.1.2)
d:Daysofuse(d)
H: Hours required for cleaning one workpiece (h)
n: Number of workpieces cleaned a day (pcs)
If the number of days of the machine operation accompanied with spinner
cleaning reaches d, replace the cap seal, U-packing and wear ring.