User guide

Maintenance and Service 19
5 Maintenance and Service
Overview
Performing the recommended maintenance and service procedures increases the life of your DJ-2100
DispenseJet and ensures high quality dispensing performance for every production run.
Safety First
Before you proceed with DispenseJet maintenance, make sure you understand the precautions in the Safety
section and adhere to the precautions during the performance of maintenance procedures.
CAUTION! Maintenance and service should be performed by trained personnel only.
Routine Maintenance Schedule
The recommended maintenance schedule for the DispenseJet is shown in Tables 5-1 and 5-2. The
frequencies are based on the average production environment. Your production environment may differ.
Table 5-1 Routine Maintenance Schedule
Task Frequency Instructions
Purge
After each syringe change
See “Purging the DispenseJet” in
the Operation section.
Prime
Performed as part of Prompted
Setup
DJ-2100 Installation
routine after cleaning and
installation or manually, as
necessary.
See “Priming the DispenseJet” in
the Operation section.
When DispenseJet is cleaned or
disassembled
As necessary to resolve
problems (inconsistent dots or
pump unable to dispense)
Clean Nozzle
Approximately every eight hours
of normal use
See “Cleaning the Nozzle” later
in this section.
Complete Cleaning
Change of Fluid Type
See “Complete Cleaning” later in
this section.
Monthly (may vary based on
curing properties of your fluid)
Troubleshooting
Complete Overhaul As required to remedy problems
See “Complete Overhaul
Service” later in this section.
Table 5-2 Parts Replacement
Maintenance Procedure Conditions Recommended Frequency
Fluid U-Cup Seal Replacement Normal Use 20-25 million cycles*
Needle, Extension Replacement Normal Use 40-50 million cycles (or higher)
Air Piston Replacement Normal Use 40-50 million cycles (or higher)
Spring, Micro-Adjustment Replacement Normal Use 40-50 million cycles (or higher)
Adjusting Air Piston Assembly Normal Use After complete cleaning
*A cycle is defined as a one-dot shot. Required maintenance is dependent on usage.