Cleaning Instructions - WEG CFW11W G2 Series User Manual

Troubleshooting and Maintenance
ATTENTION!
Electronic boards have components sensitive to electrostatic discharges.
Do not touch the components or connectors directly. If necessary, first touch the grounded metallic
frame or wear a ground strap.
When installed in proper environment and operating conditions, the inverters require little maintenance.
on page 6-12 presents the main procedures and time intervals for preventive maintenance.
6-12 contains the recommended inspections to be performed every 6 months after the start-up.
Maintenance
HMI battery replacement
Cleaning the cooling system and changing
the coolant
Monthly inspection
Refill 1.5 % of Inhibitor CorteC VpCI-649
6
The following refrigeration system parameters must be registered annually:
Measure the ethylene glycol concentration using a refractometer. If the concentration is below the recommended
„
level, ethylene glycol must be replaced in the system.
Measure the pH of the solution. The pH of the solution should be between 8.2 ... 10. If the pH is outside this
„
range, a complete fluid change must be made.
Component
Terminals, connectors
Printed circuit boards
Power module/Power connections
Power resistors

6.5.1 Cleaning Instructions

When it is necessary to clean the inverter, follow the instructions below:
Electronic boards:
1. Disconnect the power supply of the inverter and wait for 10 minutes.
2. Remove the dust accumulated on the boards using an anti-static brush or ion compressed air gun (Example:
Charges Burtes Ion Gun (non-nuclear) reference A6030-6DESCO).
3. If necessary, remove the boards from the inverter.
4. Always wear a grounding strap.
6-12 | CFW-11W G2
Do not execute any applied potential test on the inverter!
If necessary, contact WEG.
Table 6.3: Preventive maintenance
Every 10 years
Every 5 years
Once a month
Once a year
Table 6.4: Periodic inspections every six months
Anomalies
Loose Screws
Loose Connectors
Buildup of dust, oil, moisture, etc.
Buildup of dust, oil, moisture, etc.
Loose connection screws
Discoloration
Interval
Open the panel and check for leaks. If
Smell
Smell
Table 6.3
Table 6.4 on page
Instructions
See Chapter 4 HMI on page 4-1
Contact WEG
present, it must be corrected
Contact WEG
Corrective Action
Tighten
Cleaning
Replace
Cleaning
Tighten
Replace