Knight UniTech Warewash, Instruction Manual

Page: 7 / 24

0900591 Rev: A (07/04) Page 7 of 24
INSTALLATION — PLUMBING
Rinse & Sanitizer Plumbing
The following installation steps apply for rinse and
sanitizer pumps alike.
(1) Install the provided 1/4" tube x 1/8" NPT injection
fitting into the side or bottom of the dishwasher
rinse line between the rinse solenoid valves and the
rinse jets. If necessary, drill a 11/32" hole and tap to
1/8" NPT. Use of a saddle clamp may be desired on
copper rinse line for better support.
(2) Cut a suitable length of 1/4" OD poly tubing and
connect between the discharge (right) side of the
pump’s squeeze tube and the injection fitting.
(3) Cut a suitable length of 1/4" OD poly tubing and
connect between the suction (left) side of the
pump’s squeeze tube and the pickup tube provided.
Be sure to draw tubing through the end of the
pickup tube.
(4) Hand-tighten the compression nuts on both the
injection fitting and pickup tube. Plastic ties can be
used to cinch around the connections where the
poly tubing is inserted into the pump’s squeeze
tube.
Liquid Detergent Plumbing
(1) Install the provided bulkhead fitting through a wall
of the wash tank (above water level). If an existing
mounting hole cannot be located, cut or punch a
7/8" hole.
(2) Cut a suitable length of 1/4" OD poly tubing and
connect between the discharge (right) side of the
detergent pump’s squeeze tube and the bulkhead
fitting.
(3) Cut a suitable length of 1/4" OD poly tubing and
connect between the suction (left) side of the
detergent pump’s squeeze tube and the pickup
tube provided. Be sure to draw tubing through the
end of the pickup tube.
(4) Hand-tighten the compression nuts on both the
bulkhead fitting and pickup tube. Plastic ties can be
used to cinch around the connections where the
poly tubing is inserted into the pump’s squeeze
tube.
Dry Detergent Plumbing
(1) A powder or solid type feeder (not provided) should
be used for dispensing dry detergent products.
Follow the instructions included with the detergent
feeder for installation, and recommended water
temperature/pressure.
(2) Cut a suitable length of 1/4" OD copper tubing (not
provided) and connect between the input side of the
water solenoid and the water source. Maximum
recommended water temperature is 140°F (60°C).
(3) Cut a suitable length of 1/4" OD copper tubing (not
provided) and connect between the output of water
solenoid to a powder or solid detergent feeder.
(4) Carefully tighten the compression nuts on the water
solenoid — over tightening may cause solenoid to
leak. Tighten connections to the water source and
detergent feeder as needed.
NOTE: If there is an existing dispenser that uses dry
detergent, examine the power bowl. Make sure it is not
clogged and that the spray pressure is sufficient to
dissolve solid/powder products efficiently. Make sure the
water source is hot water. If necessary, tap into a hot
water line for a new source.