Jet 131000 1ss-3c-10 - 1-ton capacity 10-ft 3-phase electric chain hoist User Guide
17
Inspection and Maintenance
All repairs and adjustments are to be performed by trained and experienced personnel
using procedures that are approved for the hoist system being serviced. All safety-related deficiencies
discovered in the inspection are to be corrected before hoist is placed back in service. Check for
internal damage whenever external damage has occurred.
discovered in the inspection are to be corrected before hoist is placed back in service. Check for
internal damage whenever external damage has occurred.
Read and follow the ANSI Inspection and Maintenance instructions. Know the meaning of Frequent Inspection,
Periodic Inspection, Normal Service, Heavy Service, and Severe Service. It is the customer’s responsibility to
understand and follow all ANSI and JET inspection and maintenance instructions.
Periodic Inspection, Normal Service, Heavy Service, and Severe Service. It is the customer’s responsibility to
understand and follow all ANSI and JET inspection and maintenance instructions.
The following items are to be inspected by appointed personnel at the time interval noted below. Dated
inspection and repair reports must be maintained. Copies of all reports must be available to service personnel.
inspection and repair reports must be maintained. Copies of all reports must be available to service personnel.
Inspection Schedule A
Service Interval:
Normal Service – Monthly
Heavy Service – Weekly to Monthly
Severe Service – Daily to Weekly
1. Check brake for slippage.
2. Check that pushbutton controls operate
properly.
3. Check that limit switches function properly.
Without load, operate up button control while
observing stopper spring. If stopper spring
becomes compressed and motor does not
stop, STOP operation immediately. Limit
switch is not operating properly. Repeat test
with down button control.
observing stopper spring. If stopper spring
becomes compressed and motor does not
stop, STOP operation immediately. Limit
switch is not operating properly. Repeat test
with down button control.
4. Check top hook and load hook for deformation,
chemical damage, and cracks.
5. Check that load chain is clean and lightly
lubricated, free of excessive wear or
deformation at the contact points between
links and link and hook. This hoist uses special
alloy hoisting chain and does not interchange
with any other manufacturer. All replacement
chain must be purchased from your JET
distributor or from Walter Meier
(Manufacturing) Inc., directly by calling 800-
274-6848.
deformation at the contact points between
links and link and hook. This hoist uses special
alloy hoisting chain and does not interchange
with any other manufacturer. All replacement
chain must be purchased from your JET
distributor or from Walter Meier
(Manufacturing) Inc., directly by calling 800-
274-6848.
6. Check that the chain passes through all
sprockets smoothly while under load.
7. Check entire hoist system for signs of damage
and loss of integrity.
Inspection Schedule B
Service Interval:
Normal Service – Yearly
Heavy Service – Semi-Annually
Severe Service – Quarterly
1. Do all of the Schedule A items.
2. Check entire unit for loose screws, bolts, nuts
and pins.
3. Check for evidence of excessive wear,
corrosion, cracks, or distortion in the following
parts: hook parts, chain attachments,
suspension bolts and shafts, gears, bearings,
pins, rollers, and locking and clamping
devices.
parts: hook parts, chain attachments,
suspension bolts and shafts, gears, bearings,
pins, rollers, and locking and clamping
devices.
4. Check for evidence of damage to hook parts
including hook retaining nuts and collars and
pins and hook holding frame and parts used to
secure the frame.
pins and hook holding frame and parts used to
secure the frame.
5. Check for evidence of damage or excessive
wear of load gear, sheave and sprocket wheel.
If the pockets are too deep, the chain may jam
with corresponding failure of engagement
between chain and sprocket or sheave.
If the pockets are too deep, the chain may jam
with corresponding failure of engagement
between chain and sprocket or sheave.
6. Check for evidence of excessive load brake
wear. Inspect clearance between brake
components, and adjust if needed.
components, and adjust if needed.
7. Check for evidence of pitting or other
deterioration of visible controller contacts.
8. Check for evidence of deterioration of
supporting structures and trolleys.
9. Check for visible deformation of limit switch
coil springs.
10. Check that all warning labels are present and
readable.