www.mcscontrols.com
ModelNew generation of
innovative design
Screw compressor
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M Suggestive Guidelines for Preventive Maintenance
All HANBELL screw compressors are put through strict quality and performance testing prior to shipping from the factory.Provided that terms of payment are observed, a two year (24-month) warranty is offered from the date of installation or 27 months from date of shipment.
of the second year of the warranty is subject to the maintenance of the compressor unit during
Hanbell compressors sold by MCS, which are controlled by an MCS micro controller with software and three-year (36 months) warranty
MCS may at its option, repair or replace defective products that are under warranty.
M The technicians should be familiar with the Hanbell compressor before attempting any maintenance on the unit.Periodical check and regular maintenance are very important for the long and trouble-free compressor life and for maintaining the warranty. The content here is to help the operator and service people to know how the regu-lar maintenance can be done and when the suitable time is for each item. Operators and service people should follow the instructions on these pages when working on the maintenance.Besides the regular maintenance, Technicians should check the systems working status by noting down its working parameters on a set schedule. Most of the time abnormal system conditions can be found via comparing its working parameters with its daily operating data.
Compressor unit should be stopped before doing the maintenance job.Disconnect power from unit before doing the maintenance job.Close all the isolation valves before doing the maintenance job.Wear safety equipment when doing the maintenance job.Ensure adequate ventilation before doing the maintenance job.Take safety precautions for the refrigerant used and work with care.
T MDuring commissioning period or after a few hundred hours of compressor running, the following checks and replacement shall be done in order to protect the compressor and understand the compressors working status.
The Suction strainer plays a very important role to long compressor life. In the initial commissioning, debris
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will be gathered inside the strainer to protect the compressor from rotor damage. Technicians should check the suction strainer at the . Any dirt and unwanted material should be removed during the checking. Wash the strainer basket in solvent and blow clean with air.
AAt the , oil analysis is recommended to be e ecuted at jobsite. The purpose of doing oil analysis is to understand the compressors working environment and ensure the oil quality. If moisture contamination e ists 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 . If the oil analysis shows the oil is in good condition, 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 pH . L T M
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 technicians reference and should be considered as the minimum guideline to maintain the systems nor-mal operation. Technicians still can do any e amination 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.
M 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.
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.
A
should perform this check.
Overhaul review is recommended to be done at least . It is the best time to review the internal parts
perform this review.
-
Month Maintenance ecordsSuggestive Guidelines for Preventive Maintenance
Company Technician Phone
Site nformationInstallation Site Name
Model Number Serial Number Type Oil Usednit
Check PointsMaintenance Schedule
24hrs
200hrs
1000hrs
2500hrs
5000hrs
10000hrs
15000hrs
20000hrs
25000hrs
30000hrs
Motor InsulationOil Filter Cartridge
Suction FilterPiston RingsPTC Sensors
BearingsOil Level
Oil Change Check every 2500 hrsOil Analysis Perform Oil Analysis every 6 months of constant running
Check / Clean Indicates checked or cleaned by Technicians Change - add X when completed Item should be checked every 2500 hrs for possible contamination. Item should be replaced as maintenance schedule shows on chart above.
Gen
eral
Info
rmat
ion
Com
pany
Stre
et,C
ity,S
tate
,Zip
Nam
eEm
ail
Phon
e
Site
Info
rmat
ion
exam
ple:
ABC
Ele
men
tary
Sch
ool
exam
ple:
CVH
E32,
HW
SC22
5D
Inst
alla
tion
Site
Nam
eM
odel
Num
ber
Wha
t typ
e of
oil
is b
eing
use
d?
Upo
n st
artu
p, p
leas
e co
mpl
ete
the
form
with
as
muc
h de
tail
as p
ossi
ble
em
ail t
o sa
les@
mcs
cont
rols
.com
or p
rint a
nd fa
x to
239
-694
-003
1 Mob
ile
Uni
t Inf
orm
atio
n
Dat
e
Sale
s O
rder
#
Mod
el N
umbe
rSe
rial N
umbe
rM
odel
Num
ber
Seria
l Num
ber
Uni
t 1U
nit 4
Uni
t 2U
nit 5
Uni
t 3U
nit 6
Tem
pera
ture
Rea
ding
s
Volt
/ Pre
ssur
e / A
mp
Read
ings
For Unit Information please see description above
Ambient Temp
Cond Approach Temp
Cond In Temp
Cond Out Temp
Evap In Temp
Evap Out Temp
Oil Sump Temp
Cond Sat Temp
Evap Sat Temp
Sub Cooling Temp
Suction Superheat Temp
Discharge Superheat Temp
Discharge Temp
Suction Temp
Liquid Line Temp
Motor Temp
Evaporator Approach Temp
Volts L1 to L2
Volts L2 to L3
Volts L3 to L1
Refrigerant Type
Run Hours
Oil Filter PSI
Oil PSI Differential
Discharge Pressure
Suction Pressure
Amps L1
Amps L2
Amps L3
Uni
t 1
Uni
t 2
Uni
t 3
Uni
t 4
Uni
t 5
Uni
t 6
Rem
arks
W
arra
nty
Star
t Up
/ Sta
tus
Rep
ort
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NOTES
Providing HVAC/R Control Solutions Worldwide
5580 Enterprise Pkwy. Fort Myers, FL 33905Office: (239) 694-0089
Fax: (239) 694-0031www.mcscontrols.com
SCREW TECHNOLOGY
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