INSTALLATION, START-UP & MAINTENANCE MANUAL
SD-220 TO SD-600
REV 04 – 10 Oct 2003
Page 15 of 32
SECTION 4: MAINTENANCE
☛ Note - In order to ensure continuous and trouble-free operation, a
maintenance contract with an authorized Sullair distributor is recommended.
The following points should be checked regularly:
Daily
• Carry out a general visual check and watch out for possible disruptions during
operation.
• Check function by manually operating the automatic condensate drain on the pre-
filter.
• Do an optical color test on the blue gel indicator:
Indicator Color Approx. dew point [ °C]
Blue gel
Blue
Pink
Transparent
- 25
0
+ 15
Weekly
• Check the differential pressure on the pre-filter, which should not exceed 10
PSID. Values greater than this indicate that the filter element must be changed.
• Check the differential pressure on the after-filter, which should not exceed 10
PSID. Values greater than this indicate that the filter element must be changed.
• Check the pressure of the regenerating vessel during regeneration after
depressurization. Any backpressure caused by blocked exhaust silencers will be
show here. Backpressure on the regenerating tower should not exceed 5 psig.
• Drain inlet and exhaust valve chambers using valves
provided below the valve (photo right).
• Drain pilot air filter housing of any condensate
(photo left).
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