Dover OPW 790CLH-0045 빠른 시작 매뉴얼 - 페이지 3

{카테고리_이름} Dover OPW 790CLH-0045에 대한 빠른 시작 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Dover OPW 790CLH-0045 4 페이지. Torsion balance

Travel Stop 788, 789, 790 Series

Upward

Snubber Block

Remove the (4) socket head screws in snubber

block, then rotate snubber block toward pivot

pin to allow for more upward travel or away

from pivot pin for less upward travel.

Replace the (4) screws and tighten.

Adjustment 788, 789 Series

When to adjust torque

NOTE: Left hand spring balance shown.

NOTE: The worm gear adjustment mechanism provides significant mechanical advantage during adjustment.

Under high load conditions (790) it is recommended that the loading arm be raised to approximately 45° above horizontal.

Under low load conditions it is possible to adjust the spring torque without raising/supporting the loading arm.

Torque

For more lifting action increase torque.

For less lifting action decrease torque.

1. Raise loading arm to highest position and secure.

2. Hold Adjusting Nut of Spring Regulator [2] with a large wrench.

3. Loosen lower Bolt of Spring Keeper and remove upper one.

Using a large screwdriver push Spring Keeper forward. With

Spring Keeper disengaged turn Spring Regulator Adjusting Nut

clockwise for more or counter clockwise for less torque.

4. With spring tension in desired position press Spring Keeper back

into position on Spring Regulator. While holding Spring Regulator

Adjusting Nut, tighten Spring Keeper Bolts [3]. Be sure Lock

Washers [4] are in place.

5. Minor adjustment can be achieved by turning the Spring Keeper

½ position. This is done by removing the 2 Keeper Bolts [3] and

turning the Spring Keeper end for end, so that the "teeth" of the

Spring Keeper will be reversed.

Pivot Pin

790 Series Counterbalance

Downward

Jam Nut

Loosen Jam Nut (located below lever arm) and

turn stop bolt in for more downward travel or

out for less downward travel. Then hold bolt

and tighten jam nut securely.

788, 789 Series

Spring Keeper Bolts

Adjusting Nut

Spring Keeper

Spring Regulator

Stop Bolt