Geareducer Fan Hub Installation | SPX Cooling Technologies HP700

Note

36 and 38 Geareducer

Fan Hub Installation

The following instructions detail the process for installing a Marley HP7000 fan on a Marley Geareducer® with a tapered fan (output) shaft utilizing a bolted fan hub retention plate or a straight fan shaft using a split taper bushing. Installation on other gear reduction units may be different. Contact your Marley sales representative for supplemental instructions if required.

If the fan installation is for a Marley 36, 38, 3600, or 4000 model Geareducer, or uses a U1 split taper bushing on a straight (out- put) shaft, refer to the applicable instructions below.

1–Remove the retention plate and hardware from the top of the Geareducer shaft. Thoroughly clean the fan shaft, fan shaft key, and the fan hub center bore to remove any debris and/or protective coatings. After cleaning, apply a coat of anti-seize compound to the top 7″ (180mm) of the fan shaft.

2–Prior to hub installation, fully seat the key in the fan shaft keyway. The key is a tight fit across the width and must never be altered.

3–Raise the fan hub above the fan shaft for installation. Slowly lower the hub onto the shaft with the keyways properly aligned. Make certain the key does not slide down during installation. Stake the key in the keyway with a center punch if necessary.

The fan shaft key should be approximately centered in the engaged portion of the hub when engaged on the shaft. Verify the center hub is fully seated by visual inspection.

4–Install the retention plate and hardware. Torque bolts to 70 ft·lbƒ (95 N·m).

36 and 38 Series Geareducers use a tapered fan shaft key. Correct key installation is imperative for proper and safe op- eration. The following instructions detail installation for these applications.

1–Remove the retention plate and hardware from the top of the Geareducer. Thoroughly clean the fan shaft, fan shaft key, and the hub center bore to remove any debris and/or protective coatings. After cleaning, apply a coat of anti-seize compound to the top 7″ (180mm) of the fan shaft.

2–Install the 36 and 38 Series Geareducer fan shaft key in the fan shaft keyway as shown in Figure 2. The key is a tight fit across the

width and must never be altered.

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HP700 specifications

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