Coffing Hoists EC Series, Руководство по эксплуатации, техническому обслуживанию и каталог запасных частей

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P/N EC680-7 April 2017
Order # 5041558-0 & 5041679-0
INSPECTOR’S REPORT
Item Remarks (List Deficiencies and Recommended Action
Inspector’s Signature Date Inspected Approved By Date
FIGURE 4-2. RECOMMENDED INSPECTOR’S REPORT
4-4. LOAD BRAKE FUNCTION CHECK
To check the functioning of the mechanical load brake, proceed as
follows:
a. Attach a light load to the hoist and lift it several inches.
b. DISCONNECT HOIST FROM POWER SUPPLY and remove
short end brake cover (see Figure 8-2, Index No. 1)
c. Referring to Figure 4-3 and Figure 8-9, place screwdrivers No.1
and No.2 behind the plate and armature assembly and prepare
to pry against the transmission cover.
Note
Do not allow either screwdriver to contact brake disc
(see Figure 8-9, Index No. 7).
d. Carefully pry open motor brake (close solenoid gap) and observe
action of load. If the load accelerated, the mechanical load brake
is malfunctioning and must be repaired.
FIGURE 4-3. LOAD BRAKE FUNCTION
4-5 CHAIN INSPECTION
Chain inspection and lubrication are the more important aspects of
hoist maintenance. Removal of the chain from the hoist usually is not
necessary, but the chain should be run through the hoist enough that
every link is made visible for inspection.
a. Check each link for gouges, nicks, weld spatter, corrosion
and distortion.
b. Inspect each link for wear to the diameter of the link (see Figure
4-4). The nominal link diameter is 0.250 inch for chain on models
up to EC-2008 and 0.281 inch for models EC-2012 and above. If
the diameter of any link of 0.250 chain is worn to less than 0.200,
or the diameter of any link of 0.281 chain is less than 0.225, the
entire chain must be replaced.
FI GURE 4-4. LINK WEAR