Hanbell RC2-930A - Page 80

Technical Manual VERSION 2.0 -10-18-2018
80
Hanbell Maintenance Version 1.0
DQGZHOGLQJVODJPLJKW¿QGLWVZD\WRFRPSUHVVRU¶VVXFWLRQVLGH:LWKWKHKHOSRIWKHVXFWLRQVWUDLQHUGHEULV
will be gathered inside the strainer to protect the compressor from rotor damage. Technicians should check
the suction strainer at the HQGRIFRPPLVVLRQLQJDQGDIWHUKRXUVRILQLWLDOUXQQLQJ. Any dirt and
unwanted material should be removed during the checking. Wash the strainer basket in solvent and blow
clean with air.
1.2.2 Oil Analysis
At the HQGRIFRPPLVVLRQRUDIWHUKRXUVRILQLWLDOUXQQLQJ, oil analysis is recommended to be executed
at jobsite. The purpose of doing oil analysis is to understand the compressor’s working environment and
ensure the oil quality. If moisture contamination exists in the system, this will lead to changing of oil quality
and cause poor lubrication for internal moving parts which can cause severe damage to the compressor
in the future. Technicians should replace the oil immediately to protect the internal moving parts with good
lubrication and recheck the oil DJDLQDIWHUKRXUVRSHUDWLRQ. If the oil analysis shows the oil is in good
condition, UHFKHFNWKHRLOHYHU\PRQWKV to ensure the condition remains safe.
In the case of being unable to do the oil analysis periodically, consult Hanbell oil change schedule because
the interval of oil change varies by the oil type and compressor operating condition.
Check the oil acidity periodically and change the oil if the oil acidity value measures lower than pH6.
1.3. Long Term Maintenance
The information below is focusing on standard long term maintenance. Technicians should understand that
these items are not assumed to take over all the necessary routine checks. Daily check for operation conditions
is also very important to have a stable operating system.
Please refer to the recommended maintenance schedule found on the following pages. This schedule is only
for the technician’s reference and should be considered as the minimum guideline to maintain the system’s nor-
mal operation. Technicians still can do any examination by their own that will ensure a stable system
operation. In case of any irregular situation or abnormal condition that takes place on the compressor
system, Technicians should stop the compressor and contact the contractor who installed the unit.
1.3.1 Mechanical Seal
The Shaft seal leakage should be observed everyday and be inspected by removing the cover at least once
per year when doing other regular maintenance. Special attention should be given to hardening and cracking
of the O-ring, wear, scoring, material deposits, oil coke and copper plating. The purpose of checking the
mechanical seal every year is to ensure the stable operation for the following year. Wearing parts of shaft
seal are recommended to be changed with a new one.
1.3.2 Piston Sealing
The Piston is also recommended to be inspected every year to ensure the function of capacity control. If
abnormal wearing is found, the corresponding part should be replaced by a new one. Prior to replacing, the
technicians should do an inspection and determine what is causing the wearing problem.
1.3.3 Vibration Analysis
9LEUDWLRQDQDO\VLVFDQKHOSWRGHWHFWEHDULQJZHDUDQGRWKHUPHFKDQLFDOIDLOXUHV$FHUWL¿HG+DQEHOO7HFKQLFLDQ
should perform this check.
Overhaul Review
Overhaul review is recommended to be done at least HYHU\\HDUV. It is the best time to review the internal parts
DQG UHSODFH DOO ZHDULQJSDUWVIRU WKH IROORZLQJ ORQJWHUPRSHUDWLRQ$ FHUWL¿HG +DQEHOO7HFKQLFLDQ VKRXOG
perform this review.
3