Maintenance & Handling; Count/Hour Meter - Harrington ER2 SERIES Owner's Manual

6.0 Maintenance and Handling
6.1

Count/Hour Meter

A count/hour function is included in all NER2/ER2 hoists. A Count/Hour Meter is included in the single speed
hoists and a count/hour function is one of the VFD parameters in the dual speed hoists.
6.1.1 Single Speed – The Count/Hour (C/H) Meter located on the electrical control panel records the hoist's
"ON" time and number of starts. To view these values, press the button on the C/H Meter one time.
The display will then show a total of 3 values. The first value will show an "H" and a 5 digit number
which is the hoist's total "ON" time (up and down) in hours (item "1" in
display will automatically change to a 6 digit number which is the number of starts of the hoists "DOWN"
contactor, through 999,999 starts (item "2" in
change to a 4 digit number prefaced by a "C". This is the number of hoist starts through 9,999,000,000
(item "3" in
The example in
•
•
6.1.2 Contactor – The C/H Meter can be used in conjunction with the amount of jogging to estimate when the
contactor(s) should be replaced. Jogging is when the pendant control buttons are pressed quickly and
repetitively to move the hook in small increments. Refer to
Rating
Low
Medium
High
Figure 6-1).
Figure 6-1 is as follows:
Item "1" – Operating Hours: 1,089 hours
Item "3" and "2" – Number of Starts: 2,031,091 starts
Figure 6-1
Table 6-1 Criteria for Recommended Contactor Replacement
Jogging During Normal Operation
Approximate Jogging Frequency
Jogging is rare.
During 25% of operations/lifts.
During 50% or more of operations/lifts.
Figure 6-1). After 3 seconds, the display will automatically
Count/Hour Meter
Table
Change Contactor After:
39
Figure 6-1). After 3 seconds, the
6-1.
(starts)
1,000,000
500,000
200,000