Harrington Hoists and Cranes TCR Hoist - (1/4-6 Ton) User Manual

Page 30

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5.5

Occasionally Used Hoists

5.5.1

Hoists that are used infrequently shall be inspected as follows prior to placing in service:

Hoist Idle More Than 1 Month, Less Than 1 Year: Inspect per FREQUENT Inspection criteria of

Section 5.3

above.

Hoist Idle More Than 1 Year: Inspect per PERIODIC Inspection criteria of

Section 5.4

above.

5.6

Inspection Records

5.6.1

Dated inspection reports and records should be maintained at time intervals corresponding to those
that apply for the hoist’s PERIODIC interval per

Section 5.2.4

. These records should be stored where

they are available to personnel involved with the inspection, maintenance, or operation of the hoist.

5.6.2

A long range chain inspection program should be established and should include records of
examination of chains removed from service so a relationship can be established between visual
observation and actual condition of the chain.

5.7

Inspection Methods and Criteria

5.7.1

This section covers the inspection of specific items. The list of items in this section is based on those
listed in ANSI/ASME B30.16 for the Frequent and Periodic Inspection. In accordance with ANSI/ASME
B30.16, these inspections are not intended to involve disassembly of the hoist. Rather, disassembly for
further inspection would be required if frequent or periodic inspection results so indicate. Such
disassembly and further inspection should only be performed by a qualified person trained in the
disassembly and re-assembly of the hoist.

Table 5-3

Hoist Inspection Methods and Criteria

Item

Method

Criteria

Action

Functional operating
mechanisms.

Visual, Auditory

Mechanisms should be properly adjusted and
should not produce unusual sounds when
operated.

Repair or replace
as required.

Limit Switch

Function

Proper operation. Actuation of limit switch should
stop hoist.

Repair or replace
as required.

Chain Lever/Limit
Lever Assembly

Visual, Function

Lever should not be bent or significantly worn and
should be able to move freely.

Replace.

Braking System

Function

Braking distance should not exceed
approximately five chain links.

Repair or replace
as required.

Hooks - Surface
Condition

Visual

Should be free of significant rust, weld splatter,
deep nicks, or gouges.

Replace.

Hooks - Fretting
wear

Measure

The “u” dimension should not be less than
minimum value listed in

Table 5-6

.

Replace.

Hooks - Stretch

Measure

The “K” dimension should not exceed the
maximum value for replacement from

Table 5-6

(See

Section 3.12

).

Replace.

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