Dixon 5500 Series Wartung und Betriebsanleitung - Seite 8

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Warning: If the shoulder screws (21 and 27) break, this can cause the poppet to be left in partially

open position which may cause spill. Replace the shoulder screws (21 and 27) when they show

sign of wear or damage.

Visually examine the nose piece assembly every 12 months for significant dirt accumulation that

could cause nose piece seal leakage.

Visually examine the body (1), sleeve (4), interlocking cams (13), latch (15) and torsion springs

(14) for wear or damage every 12 months. Check the interlocking cam groove on the sleeve (4) for

wear and damage. Replace any worn or damaged parts.

Warning: If there is significant wear on the interlocking cam groove of the sleeve (4) or the

interlocking cams (13), replace the sleeve (4) or interlocking cams (13) immediately. Failure to

replace these parts can cause failure to interlock the API rack coupler.

3. SEAL REPLACEMENT

It is recommended that seals should be replaced with appropriate API rack coupler seal kit every 2

years, or at the first evidence of leakage. See Section "REPLACE SEALS" for procedures.

4. OVERHAUL

It is recommended that a complete overhaul of the API rack coupler should be performed every 4

years, or at the first evidence of leakage. Complete overhaul would involve seal inspection and

replacement, valve assembly inspection, inspection of body (1), sleeve (4), shaft (2), interlocking

cams (13), latch (15) and springs (14, 20). Replace any worn or damaged parts immediately. See

corresponding sections for procedures.

CAUTION! WHEN THE API RACK COUPLER POPPET (5.1) IS UNDER PRESSURE, THE

HANDLE (10) OF THE API RACK COUPLER MAY ROTATE VIOLENTLY.

PERSONAL INJURIES MAY RESULT IF THIS PRECAUTION IS NOT TAKEN.

INSTALL API RACK COUPLER TO LOADING ARM:

Warning: Read and understand this instruction manual before starting installation.

1. Check the API rack coupler to make sure that there is no damage.

2. Secure the loading arm. Align the TTMA 4" flange of the API rack coupler to the loading arm

end flange with TTMA 4" gasket. Insert two bolts into the top bolt holes on the flanges and

hand tighten the bolts first. Install the remaining six bolts and tighten all the bolts.

3. Make sure that all other devices for the loading arm are properly installed and ready for use.

Make sure that there is no liquid product in the line. Snap the API rack coupler onto an API

adapter. Check the followings:

• Make sure that the nose ring of API adapter is locked by the five interlocking cams (13) of

the API rack coupler.

• Make sure that the sleeve (4) moves fully forward to the outlet of the API rack coupler.

• If the sleeve (4) is in place, check the interlock by pulling back the API rack coupler or

bending the API rack coupler sideways without triggering the release (16). The API rack

coupler should be locked tightly.

• If the API rack coupler is locked tightly, fully rotate the handle (10) to the open position.

Make sure that the handle (10) can rotate freely and the poppet (5.1) of the API rack

coupler can push the poppet of the API adapter to the open position.

090140 REV5 2021/12/15

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