SeaLand TW Discharge Pump - Manual

Before installing the pump, you must consider the following:
1.
The pump should be installed horizontally (motor on top) on floor, deck or shelf. The
pump can be installed vertically (with discharge side up) or on its side, but may operate at
reduced efficiency.
2. The pump should be mounted above the holding tank to prevent waste overflow during
maintenance or repair. (See diagram.) When space prohibits installing the pump above
the holding tank, you should provide a loop in the hose that extends to the top of the
holding tank between the tank outlet and the pump inlet. This will reduce overflow during
maintenance or repair.
3. Vessels with an underwater discharge seacock or thru-hull must have a vented or anti-
siphon loop installed well above the water line between the pump outlet and the seacock or
thru-hull fitting. The vented loop should be plumbed with hose to a thru-hull fitting well above
the water line.
4. When the TW Pump is replacing a macerator-type discharge pump, you will need the 1.5-in.
x 1-in. hose coupling provided. This coupling utilizes the 1-in. seacock already installed.
Install the hose coupling in the discharge line at least 5 feet away from the pump outlet to
prevent possible plugging due to the size reduction. You will need 5 feet (1.52 m) of 1.5-in.
hose to run from the pump to the hose coupling.
Caution: This pump is not for use as a VacuFlush toilet vacuum pump. Damage to the pump and system
would result. When pump is used to discharge SanX or TDX systems, follow electrical and plumbing
instructions in your SanX or TDX owner’s manual. When using this pump with a holding tank, see illustration
below. Pumping against a closed seacock will result in damage to the duckbill valves.
Typical Discharge Application
Dimensions
Electrical Specifications
Installation Instructions
TW-Series Macerator and
Discharge Pump
Dometic Corporation, Sanitation Division
13128 State Rt. 226, P.O. Box 38 • Big Prairie, OH 44611 USA
1-800-321-9886 • Fax: 330-496-3097
www.Dometic.com
® Registered; ™ Trademark of Dometic Corporation
Model Volts (DC) Power Draw GPH (LPH) Fuse/Breaker Wire Size Lbs. (Kg)
T12 12 6 amp (avg.) 300 (1136) 10 amp
follow ABYC
recommendations
7 (3.2)
T24 24 3 amp (avg.) 300 (1136) 5 amp 7 (3.2)
Discharge/Suction Lifts – ft.(m)
Discharge 0 2 (0.6) 4 (1.2)
Suction 10 (3) 8 (2.4) 6 (1.8)
Discharge/Suction Lifts – ft.(m)
Discharge 6 (1.8) 8 (2.4) 10 (3)
Suction
4 (1.2) 2 (0.6) 0
DISCHARgE PUMP
DECK DISCHARgE
HOLDINg TANK
TANK PROBE
TOILET
SEACOCK
VENT FITTINg
TANK DISCHARgE CONTROL TANK MONITOR VENT FILTER
S
Item
Important: The TW-Pump inlet and outlet fittings have left-hand threads. Be certain that fittings have not
loosened during hose installation. To tighten fittings, turn counterclockwise. To loosen, turn clockwise.
Electrical Wiring:
Wire the pump as shown in the wiring diagram.
Use the multistranded copper wire. Protect the
wiring by installing grommets or other protective
device at holes and sharp edges. Proper fuse or
circuit breaker size is extremely important for pump
and wire protection. Overfusing this pump will result in warranty invalidation.
Caution: USCG Regulations allow overboard discharge of untreated sewage when the vessel is beyond
the 3-mile limit. However, the overboard discharge seacock or shut-off valve must be secured in the
closed position while operating within the 3-mile limit. Use of a padlock, heavy tape, non-releasable
wire tie or removal of the valve handle would be considered adequate securing of the valve.
600340678 6/13
Part No. Description
*Note: When reassembling pump, tighten screws (included with
Item 2) to 20±2lbs., or until snug. Over-tightening will cause
holes to strip.
TW-Series Discharge Pump
1
2
3
4
5
6
7
8
9
10
11
12
13
385311422
385311225
385310151
385310242
385310644
385311226
385311843
385310076
385311858
385230980
385311065
385311066
307341113
385311224
385310250
Pump Cover Kit
Pump Top Closure Kit
O-Ring Replacement Kit
Bellows Bushing
Eccentric Kit
Bellows Clamp Kit
Valve Nipple
1.5” Duckbill Valve
Pump Body
Bellows Assembly (includes item 4)
12 VDC Motor (includes item 5)
24 VDC Motor (includes item 5)
1” x 1.5” Reducing Adapter (optional)
Mounting Hardware Kit
Not Shown
Pump Assembly Less Motor
(includes items 1-9)
MANUFACTURER’S ONE-YEAR LIMITED WARRANTY
Dometic warrants, to the original purchaser only, that this waste discharge pump, if used for personal, family or household-like
purposes, is free from defects in material and workmanship for a period of one (1) year from the date of purchase.
If this Dometic product is placed in commercial or business use, it will be warranted, to the original purchaser only, to be free
of defects in material and workmanship for a period of ninety (90) days from the date of purchase.
Dometic reserves the right to replace or repair any part of this product that proves, upon inspection by Dometic, to be defec-
tive in material or workmanship. All labor and transportation costs or charges incidental to warranty service are to be borne
by the purchaser-user.
EXCLUSIONS
IN NO EVENT SHALL DOMETIC BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES, FOR DAMAGES RE-
SULTING FROM IMPROPER INSTALLATION, OR FOR DAMAGES CAUSED BY NEGLECT, ABUSE, ALTERATION, OR
USE OF UNAUTHORIZED COMPONENTS. ALL IMPLIED WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF
MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE, ARE LIMITED TO A PERIOD OF ONE (1) YEAR
FROM DATE OF PURCHASE.
IMPLIED WARRANTIES
No person is authorized to change, add to, or create any warranty or obligation other than that set forth herein. Implied warran-
ties, including those of merchantability and fitness for a particular purpose, are limited to one (1) year from the date of purchase
for products used for personal, family or household-like purposes, and ninety (90) days from the date of purchase for products
placed in commercial or business use.
OTHER RIGHTS
Some states do not allow limitations on the duration of an implied warranty, and some states do not allow exclusions or limita-
tions regarding incidental or consequential damages; so, the above limitations may not apply to you. This warranty gives you
specific legal rights, and you may have other rights which vary from state to state. To obtain warranty service, first contact your
local dealer from whom you purchased this product.