How much power does the Crown Head use?

Is the centrifugal discharge series Crown Head quieter than earlier units?

Can an older model Standard Crown Head be used with Lectra/San?

Is the Crown Head available with a bigger bowl and seat?

Crown Head suddenly will not pump out solids or paper. What's wrong?

How do I install a replacement discharge pump wall (CH120)? Do you have instructions? It is too big to fit inside the housing.

My Crown Head won't bring in enough water to flush. What's wrong?

My Crown Head is noisy; what do I do about it?

How can I convert my Crown Head to pressurized fresh water flush?

Water backs up into the deodorant tank, causing it to overflow. What can I do?

How do I winterize my Crown Head?

No water stands in the bowl, why not?

Is the Crown Head available with a bigger bowl and seat?

The Crown Head is available with two bowl and seat sizes:

1) Standard marine/RV size, identified by a round bowl.

2) Hi-boy (household size), identified by an oval bowl.

The standard bowl and seat may be upgraded to the Hi-boy size, contact Raritan Technical Support for details. Bowls are interchangeable.

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Crown Head suddenly will not pump out solids or paper. What's wrong?

In units manufactured after late 1985, problem is usually CH120 discharge pump wall. Replacing it should restore the head to proper operation. Older, pre-late 1985 units (usually deep draft models) were very voltage-sensitive. If batteries aren't in excellent condition, or if corrosion exists at wire joints and terminals - voltage drop may cause head to run slow and not discharge properly. Also, CH119D1 discharge impeller may require replacement.

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How do I install a replacement discharge pump wall (CH120)? Do you have instructions? It is too big to fit inside the housing.

Instructions are available, literature #L290. Contact Customer Service. CH120 snaps into a groove behind the macerating teeth inside the housing. Bend it, stuff it in, then snap into position.

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My Crown Head won't bring in enough water to flush. What's wrong?

1.) Be sure intake sea cock is fully open and that through hull fitting is not clogged (barnacles, etc.) and that strainer is clean, then do the following:

2.) Intake check ball may be stuck or have debris caught in it. Remove intake hose and pump plug (CH5VW), and poke eraser end of pencil into the intake nozzle to free up check ball and clean out any debris, reconnect the hose and plug and test.

3.) Inlet pump impeller (G13W) may be bad or have taken "set". Remove and examine it; if the vanes are bent in one direction replace it. Also check inner pump cavity for scoring and indications that pump has run dry. If inside of pump cavity is black and rough, replace pump housing (CH2 or CH2A).

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My Crown Head is noisy; what do I do about it?

Older standard and deep draft models were very audible due to their design. These can be exchanged for newer Centrifugal Discharge Series models which are quieter.

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How can I convert my Crown Head to pressurized fresh water flush?

A. 1) Remove hose at rear of head, going from intake pump to bowl elbow. Open intake pump and remove pump impeller. Replace pump cover.

2) Purchase a nominal 1/2" electrically operated solenoid valve (Raritan part #CWPS or equivalent) in the same operating voltage as the Crown Head. Mount the solenoid valve to the bowl elbow, using two short plastic pipe nipples, a short length of 3/4" hose and hose clamps. Connect the two wires from the solenoid valve to the two electrical motor lugs on the Crown Head, so that valve opens when head runs and closes when head stops.

3). Purchase a nominal 1/2" vacuum break (anti-siphon valve), WATTS #288A or equivalent. Loop the pressure water supply line at least 12" higher than the top of the toilet bowl and install the vacuum break at the top of this loop, using plastic pipe nipples and hose clamps. The direction of flow arrows should point toward the head.

4) Purchase a nominal 1/2" shutoff valve, either globe valve or ball valve and install in the water supply line between the water source and the vacuum break, using plastic nipples and hose clamps. This will allow you to regulate the water flow into the bowl, and also to shut off the water for servicing, etc.

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Water backs up into the deodorant tank, causing it to overflow. What can I do?

Disassemble and clean the in-line check valve (CH37E). Reinstall, being sure the arrow points toward the toilet and not toward the deodorant tank. If problem persists, replace the check valve, again being sure that arrow points to the toilet and not toward the deodorant tank.

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