10.2 Following the maintenance plan
10.2.1 Logging maintenance work
The maintenance intervals given are those recommended for average operating conditions.
➤ In adverse conditions, perform maintenance work at shorter intervals.
Adverse conditions are, e.g.:
■ high temperatures
■ much dust
■ high number of load changes
■ low load
➤ Adjust the maintenance intervals with regard to local installation and operating condi‐
tions.
➤ Documenting all maintenance and service work
This enables the frequency of individual maintenance tasks and deviations from our recom‐
mendations to be determined.
Further information A prepared list is provided in chapter 10.19.
10.2.2 Resetting maintenance interval counters
SIGMA CONTROL BASIC is equipped with a maintenance interval counter. The maintenance in‐
terval counter counts down the operating hours to the next maintenance task.
The counting down of the maintenance interval indicator shows when the next maintenance action
is due.
Reset the counter to the original value once the task has been carried out.
1. Select parameter 2 (maintenance interval counter) with the «UP»/«DOWN» keys.
2. Depress the «Enter »key for at least 3 seconds.
3. When the cursor flashes, confirm the offered value with the «Enter» key.
10.2.3 Regular Maintenance Tasks
The table below lists maintenance tasks required.
The refrigeration circuit is a closed unit. Repairs may only be carried out by certified personnel.
➤ Take note of the controller's service messages and carry out tasks punctually, taking ambient
and operating conditions into account.
Interval Maintenance task see chapter
weekly Check belt tension. 10.9
Check the cooling oil level. 10.12
Cooler:
Check the filter mat
10.3
Control cabinet:
Check the filter mat
10.4
Check the condensate drain. 10.18.2
h = operating hours
10 Maintenance
10.2 Following the maintenance plan
60
Service Manual Screw Compressor
ASK T SIGMA CONTROL BASIC 9_5717 20 E
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