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106423-0290
SIPHON VORTEX LOW
PROFILE ONE-PIECE
TOILETS
INTRODUCTION
This service instruction will help you understand the operaĆ
tion and repair of Kohler low profile oneĆpiece toilets.
The following models are included in these instructions:
K-3378-EB PILLOW TALK K-3383-EB PALARRE
K-3385-EB ROCHELLE K-3397-EB SAN RAPHAEL
K-3402-EB RIALTO K-3408-EB CABERNET
THEORY OF OPERATION
Consider how a low profile, oneĆpiece toilet differs from the
closeĆcoupled toilet. All the water in a close coupled toilet is
held in a tank that is above the rim of the bowl. Water to the
rim and jet is supplied by gravity.
On the other hand, a oneĆpiece toilet holds all the tank
water below the rim of the bowl as shown in Fig. #1.
Fig. #1
When the trip lever is actuated, water enters the supply
valve and flows to the diverter valve. At this point all line
water is diverted to the rim. The tank water is only used to
start the water action in the bowl, and to direct water to the
upleg of the trapway to start the siphonic action as illusĆ
trated in Fig. #2.
Fig. #2
After the flush is completed, the diverter valve directs water
to the rim for bowl refill, and to the tank for tank refill.
Since water which only will be directed to the jet is stored in
the tank, sufficient water to the rim must be supplied by the
supply valve as shown in Fig. #3.
Fig. #3