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5. MAINTENANCE
To avoid cooling system malfunction and cooling system failure, be sure to
vacuum debris from the enclosure before energizing. NEVER use forced air for
the removal of debris from this enclosure.
5.1 DRIVE MAINTENANCE
Periodic cleaning of the drive fan and heat sink is recommended. Removal of
the drive from the enclosure is recommended to ensure debris does not obstruct
the cooling system. Refer to the drive manufacturer's manual for additional
maintenance recommendations and specific instructions.
5.2 COOLING SYSTEM MAINTENANCE
1.
Clean pre-filter periodically. Remove pre-filter and rinse with water as needed.
2.
Clean sintered filter as needed. Use of abrasives on the explosionproof filters
may compromise the integrity of the cooling system.
3.
Clean/inspect blower intake.
4.
Perform visual, electrical and mechanical checks on all components on a
regular maintenance schedule. NFPA 70B recommends maintenance intervals
not exceeding 2 months.
5.
Visually check for any damage to the filter assemblies, flat joints, threaded
joints, journal joints and window.
6.
Visually check for evidence of excessive heating within the enclosure.
7.
Mechanically check that all parts are properly assembled and operating
mechanisms are in proper working condition.
8.
Verify airflow provisions are maintained per Section 2.1.
IF 1619 • 05/18
CAUTION
Blower intake
Copyright
5.3 PERIODIC MECHANICAL MAINTENANCE (TORQUE
VERIFICATION, PUSHBUTTON LUBRICATION,
WINDOW CLEANING)
Torque requirements
Item description
Frame R1 drive (1.5-5 HP)
Line/load
Ground
Frame R2 drive (7.5-10 HP)
Line/load
Ground
Frame R3 drive (15-30 HP)
Line/load
Line/load lugs
Ground
Frame R4 drive (40-60 HP)
Line/load
Line/load lugs
Ground
Drive control
I/O terminals
Disconnect
30 amp
60 amp
100 amp
Timer relay
Relay
Internal ground lug
External ground lug
Blower manifold
Hose clamps
Cover bolts
5.4 STATUS INDICATION -
FILTER MAINTENANCE
There are two (2) lights for the status
indicator - a GREEN light to signify RUN
and a RED light to signify STOP or ALARM
condition.
•
Solid red = power on/drive stopped/fault
•
Solid green = drive running
•
Blinking red = drive running in alarm
mode; maintenance required
•
Lights off = power off
5.5 EXPLOSIVE EVENT
REQUIRED MAINTENANCE
In the event of an explosion within the enclosure, the filter assemblies and pre-
filters must be replaced. Personnel injury or equipment damage may result from
failure to replace the filters with new filters after an explosion occurs within the
enclosure. Inspect all other components and verify that they are in proper operating
condition. Consult Eaton's Crouse-Hinds Division for replacement parts as needed.
To avoid personnel injury, allow sufficient time for the enclosure to cool prior
to servicing.
©
2018, Eaton's Crouse-Hinds Division
Wire range
Torque requirements
24-12 AWG (0.25-4 mm
)
4.4-5.3 in.-lbs. (0.5-0.6 N-m)
2
N/A
13 in.-lbs. (1.5 N-m)
20-10 AWG (0.5-6 mm
)
10.6-13.3 in.-lbs. (1.2-1.5 N-m)
2
N/A
13 in.-lbs. (1.5 N-m)
10-2/0 AWG (6-70 mm
)
11 ft.-lbs. (15 N-m)
2
N/A
25 in.-lbs. (3 N-m)
N/A
25 in.-lbs. (3 N-m)
10-2/0 AWG (6-70 mm
)
11 ft.-lbs. (15 N-m)
2
N/A
25 in.-lbs. (3 N-m)
N/A
160 in.-lbs. (18 N-m)
24-12 AWG (0.5-2.5 mm
)
5 in.-lbs. (0.5 N-m)
2
14-6 AWG (2.1-13.3 mm
)
31 in.-lbs. (3.5 N-m)
2
14-6 AWG (2.1-13.3 mm
)
31 in.-lbs. (3.5 N-m)
2
12-1 AWG (3.3-42.2 mm
)
35.4 in.-lbs. (4.0 N-m)
2
20-14 AWG (0.5-2.5 mm
)
4.4-7.0 in.-lbs. (0.5-0.8 N-m)
2
24-12 AWG
3.5-5.3 in.-lbs. (0.4-0.6 N-m)
16-2/0 AWG
120 in.-lbs. (13.5 N-m)
6-1/0 AWG
50 in.-lbs. (5.6 N-m)
N/A
20 in.-lbs. (2.3 N-m)
N/A
20 in.-lbs. (2.3 N-m)
N/A
40-45 ft.-lbs. (54.0-61.0 N-m)
WARNING: BURN HAZARD
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Page 9
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