15
LONG
TERM STORAGE
Jensen recommends long term (more than 90 days) storage procedures to protect mixers from atmospheric corrosion, physical
damage and other harmful effects. Proper storage is especially important in corrosive or high humidity environments. Store and
maintain related equipment (motors, control panels and similar devices) supplied by Jensen according to manufacturers' instruc-
tions. Failure to store and protect Jensen mixers properly may void any warranty, expressed or implied.
Pre-storage Inspection
When mixers are delivered, check impellers, impeller shafts and gearbox for shipping damage. Report damage to carrier and Jen-
sen Mixers. Protect any carbon steel components from corrosion and check protective shipping coatings. Renew if necessary. Use
heavy grease with corrosion inhibitor or thick spray such as Holt Lloyd Corp. LPS-3. New gear drives do not require additional inter-
nal protective procedures if storage is less than 90 days.
Storage Locations
Each type of storage location requires different procedures.
·
Location 1 (preferred): a dry, enclosed, temperature and humidity controlled environment. Relative humidity of 40% or
lower is ideal.
·
Location 2 (acceptable): a dry, enclosed area such as a warehouse. (Marginally acceptable is an open shed with concrete
floor.)
·
Location 3 (not recommended): outdoors under waterproof covering or mounted in operating location.
Storage Preparation and Maintenance
Jensen recommends the customer store mixers mounted on factory-provided skids in original crating.
1.
Store each drive unit in its operating position, then fill gearbox to proper level with recommended lubricant. Rotate cou-
pling until drive output shaft makes two complete revolutions.
2.
Connect motor heaters, if supplied to a proper power source.
3.
On side-entering mixer drives without motors installed, cover coupling half with heavy plastic sheet or bag and secure
with cord or adhesive tape. On 500 Series mixers, wrap exposed mechanical seal with paper impregnated with corrosion
inhibitor, then overwrap with plastic sheet. Cover motors and mixers with plastic or tarpaulins; secure.
4.
Check at 30-day intervals. Rotate motor shafts and rotate couplings for three or more complete rotations of output
shafts.
5.
Store and maintain mixers according to location-specific instructions.
Location-Specific Storage Instructions
Location l. Perform preparation and maintenance step 4 above.
Location 2. Cover motor completely but do not seal off to prevent accumulation of moisture. Cover gear drive securely. Extreme
conditions may require use of portable dehumidifiers or placement of renewable desiccant bags under coverings.
Location 3. Cover motor completely but do not seal off to prevent accumulation of moisture. Cover gear drive securely. Secure
all coverings against wind and rain. Extreme conditions may require placement of renewable desiccant bags under
coverings.
Preparation for Service after long term storage:
1.
Remove all protective materials and coverings. Wipe off dirt and oil.
2.
Check greased bearings; re-grease if necessary.
3.
Pour 32oz. tank compatible lubrication fluid into air vent to pre-lubricate seal. Hand rotate mixer through three full prop
revolutions.
4.
If applicable: Drain 10 percent of storage lubricant volume to remove condensed moisture. Adjust lubricant level with
proper lubricant. Putting mixers in service with contaminant-free storage lubricant is permissible.
5.
Check alignment of motor couplings. Follow procedures in manual.
6.
Review mixer manual thoroughly and follow installation, start up and operating procedures.
Tenney Company
www.tenneyco.com
For Jensen Mixer Parts - Call 281-350-1200
