Evoqua H30 Manuale utente
MAINTENANCE MANUAL
CIRCULAR
COLLECTOR
H DRIVE
MAINTENNACE
MANUAL
Revision: Manual .081
12/22
MAINTENANCE
.081/02-15 3-0
ITEM PAGE
SAFETY PRECAUTIONS 1-1
H-DRIVE 1-4
GENERAL PRECAUTIONS 1-5
RECOMMENDED LITHIUM BASED GREASE 1-5
LUBRICATION SUMMARY 1-6
ROUTINE MAINTENANCE 1-7
TROUBLESHOOTING GUIDE 1-16
H-DRIVE BEARING CHECK POINTS 1-17
MAINTENANCE
.081/02-15 3-1
CIRCULAR COLLECTOR, H-DRIVE
SAFETY PRECAUTIONS
The primary hazards associated with maintaining circular collectors are identified below.
POWER SOURCE LOCK-OUT
Failure to lock out all sources of power during maintenance
procedures may result in serious personal injury. Following
are the steps of a typical lock-out procedure that can be used
by maintenance and repair crews:
1. Alert the operator and supervisor.
2. Identify all sources of residual energy.
3. Before starting work, place padlocks on the switch, lever or valve, locking it in the
"off' position, installing tags at such locations to indicate maintenance in progress.
4. Insure that all power sources are off and “bleed off” hydraulic or pneumatic pressure
or “bleed off” any electrical current (capacitance) as required, so machine
components will not accidentally move.
5. Test operator controls.
6. After maintenance is completed, all machine safeguards that were removed should
be replaced, secured and checked to be sure they are functioning properly.
7. Only after ascertaining that the machine is ready to perform safely should padlocks
be removed and the machine cleared for operation.
(From Concepts and Techniques of Machine Safeguarding, 1980; U.S. Dept. of Labor OSHA).
TORQUE OVERLOAD CONTROL BOX
Electrical circuits may be energized in the torque overload control box
even though the main power is off. Always check for live contacts
before making adjustments within the box.
MAINTENANCE
.081/02-15 1-2
CHAIN GUARDS
Guards cover several points on circular collectors to prevent personal
injury from moving parts. If guards must be removed during
maintenance procedures, use caution when operating equipment and
replace guards when maintenance has been completed.
OPERATING ENVIRONMENT
Circular collectors are usually exposed to the elements. The bridge
and other access points may become slippery when wet or icy.
Handrails and other safeguards must be in place when working on the
equipment. Use care when access is necessary. Do not work outside
of the bridge handrails. Wipe up grease and oil spills.
The access area for drive maintenance is below the bridge deck
level. The difference in level will depend on the bridge design. A
falling hazard exists. Use caution when in or near the access area.
VENTILATION
Noxious fumes can be generated by septic sewage. Provide forced
ventilation and exhaust facilities when workmen are in a drained tank.
MAINTENANCE
.081/02-15 1-3
FIRE
Torch cutting, welding and the use of solvents present fire hazards.
Use care in these operations and provide fire control equipment in the
working area.
NOTE: If field painting or touch-up is required, refer to "Drive Unit Protection for
Blast Cleaning" in the INSTALLATION section.
MAINTENANCE
.081/02-15 1-4
H-DRIVE
Figure 12
VENT/FILL
PLUG
MAINTENANCE
.081/02-15 1-5
GENERAL PRECAUTIONS
To obtain maximum equipment life, it is necessary to perform the preventive
maintenance services outlined in this section. Maintenance recommendations are a guide
for average operating conditions. Conditions which impose greater wear, loads or strain
on the equipment may dictate increased maintenance. If needed, develop a revised
schedule for site specific requirements. Refer to the manufacturers' bulletins for
equipment not manufactured by Evoqua. These instructions take precedence over those
in this manual should any discrepancy be noted.
The maintenance instructions incorporated throughout this manual are to be used
by qualified service personnel only. Do not attempt to adjust or repair any
components without thorough knowledge of this equipment. Read this manual
completely. Practice preventive maintenance.
RECOMMENDED LITHIUM BASED GREASE
Any major brand of Lithium based grease No. 2 is recommended unless other lubricants
are defined for specific applications in the INSTALLATION or MAINTENANCE
sections of this manual.
For vendor supplied components (i.e. reducer, motor, etc.), see VENDOR
INFORMATION section of this manual for suggested lubricant type and frequency.
MAINTENANCE
.081/02-15 1-6
LUBRICATION SUMMARY
Recommended lubricants for Evoqua upper housing (worm gear section of main drive)
and lower housing (final section of main drive):
SUMMER: 40 F. (4 C.) or higher - Mobil Co. Mobil SHC-630* or equal
WINTER: 40 F. (4 C.) or lower - Mobil Co. Mobil SHC-629** or equal
Recommended lubricants for the primary reducer are in their bulletin in the VENDOR
INFORMATION section of this manual.
Evoqua Approximate Approximate
Drive Oil Capacity Oil Capacity
Size Upper Housing Lower Housing
(Worm Gear) (Final Drive)
H30 LT & HT 3-1/2 Qts. (3.3 Ltr.) 5 Qts. (4.7 Ltr.)
H30A LT & HT 3-1/2 Qts. (3.3 Ltr.) 6 Qts. (5.6 Ltr.)
H40 LT & HT 5 Qts. (4.7 Ltr.) 4 Qts. (3.7 Ltr.)
H40A LT & HT 5 Qts. (4.7 Ltr.) 8-1/2 Qts. (8 Ltr.)
H40 HD 10-1/2 Qts. (9.9 Ltr.) 4 Qts. (3.7 Ltr.)
H60 LT & HT 6 Qts. (5.6 Ltr.) 5 Qts. (4.7 Ltr.)
H60A LT & HT 6 Qts. (5.6 Ltr.) 16 Qts. (15.1 Ltr.)
H60A HD 12 Qts. (11.3 Ltr.) 16 Qts. (15.1 Ltr.)
H80 LT & HT 6 Qts. (5.6 Ltr.) 10 Qts. (9.4 Ltr.)
H80A LT & HT 6 Qts. (5.6 Ltr.) 16 Qts. (15.1 Ltr.)
H90 LT & HT 13 Qts. (12.3 Ltr.) 19 Qts. (17.9 Ltr.)
HD90 (2 Upper 13 Qts. (12.3 Ltr.) 19 Qts. (17.9 Ltr.)
Housings and 1 (each) Upper
Lower Housing) Housing
H90A LT & HT 13 Qts. (12.3 Ltr.) 24 Qts. (22.7 Ltr.)
HD90A (2 Upper 13 Qts. (12.3 Ltr.) 24 Qts. (22.7 Ltr.)
Housings and 1 (each) Upper
Lower Housing) Housing
NOTE: Due to the viscosity of the oil, it can take several hours for a true reading
to occur at the sight gauge. Overfilling of oil will result in oil leaking into
the collector.
*Viscosity 1045/1165 SUS @ 100 F. (38 C.) ISO Viscosity Grade 220
**Viscosity: 710/790 SUS @ 100 F. (38 C.) ISO Viscosity Grade 150
MAINTENANCE
.081/02-15 1-7
ROUTINE MAINTENANCE
*Or after severe weather or wash-down procedures.
**Due to the viscosity of the oil, it can take several hours for a true reading to occur at
the sight gauge. Overfilling of oil will result in oil leaking into the collector.
D - Daily W - Weekly M - Monthly SA - Semi-Annually
ITEM DESCRIPTION INTERVAL
SURFACE
SKIMMER
Check for smooth action on scum beach and re-entry
into tank. Check for binding against scum baffle.
During winter months, when icicng becomes
prevalent, place skimmer in lock-out positon.
D
Hose off the skimmer assembly and inspect. Tighten
all loose connections, adjust for proper skimmer
assembly blade submergence (3"(76mm) below
maximum water surface or as indicated on the
General Arrangement Drawings.). The spring loaded
hinged guide should just contact the inner wall of
the scum beach.
SA
Replace any lost or worn parts such as neoprene
wiper, polywear block or springs, if necessary
SA
WORM GEAR
SUBASSEMBLY
Check oil level at sight gauge located on side of
worm gear housing.
W*
If low, check for leaking shaft seals at worm shaft
near sprockets or remove torque overload housing
cover and inspect inside for oil Replace seals as
required. Add oil to proper level.**
If high, check for evidence of condenstae (water) in
oil. Drain small amount of oil from housing and
inspect. If clear water is present, drain until oil is
draining. Refill to sight gauge wih proper grade of
oil.** Check for damaged gasket, air vent, loose or
missing cover bolts.
MAINTENANCE
.081/02-15 1-8
ITEM DESCRIPTION INTERVAL
WORM GEAR
SUB-ASSSEMBY
(Continued)
Inspect and clean, if necessary, worm gear housing air
vent.
M
Grease worm gear bearing with a Lithium based #2
grease. Two fittings are located over worm gear on
top of housing.Clean fittings, add approximately two
pumps from grease gun to each fitting.
M
Check condition of oil for condensate or other
contaminants by draining a small amount and visual
inspection.
M
If clear water is present, drain until oil becomes
present and refill oil to proper level.** Check for
damaged gasket, air vent, loose or missing cover
bolts.
If oil is milky in color, drain, flush and refill with
fresh oil.** Check for damaged gasket, air vent,
loose or missing cover bolts.
If metal contaminants are present, remove chain
guard, chain, primary gear reducer and worm gear
housing cover and inspect for damaged or worn
parts. Flush, per procedure at end of this section,
and clean housing, replace parts as necessay,
reassemble. Add oil to proper level.**
**Due to the viscosity of the oil, it can take several hours for a true reading to occur at
the sight gauge. Overfilling of oil will result in oil leaking into the collector.
D - Daily W - Weekly M - Monthly SA - Semi-Annually
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