Glastender GT-30 - Manual (Page 17)

Glastender, Inc. • 5400 North Michigan Road • Saginaw, MI • 48604-9780
800.748.0423 • 989.752.4275 • Fax 989.752.4444 • www.glastender.com 15
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The GT-24 and GT-30 glasswashers have chemical pumps that automatically dispense chemicals into the machine. The
detergent and sanitizer chemicals are supplied by a chemical vendor. Since the type of chemicals and the condition of
water varies by region, the chemical pumps are not pre-set at the factory. The chemical pumps must be adjusted at start-up
to achieve the proper titration levels or the machine may not produce good wash results. Typically, the chemical vendor
is responsible for adjusting the chemical pumps.
Since detergent and sanitizer chemicals play an important role in the performance of a glasswasher, understanding how the
chemical pumps work and how to maintain them is very important. Reviewing the following information will help ensure
the proper operation of your glasswasher and its chemical pumps:
1. CAUTION: Never prime chemical pumps without water in the tanks. Undiluted chemicals can damage stainless steel.
NOTE: On models manufactured before Jan. 2003, the prime switches will only operate when the machine is filling
with water (See page 14 for more information).
2. The chemical feed line and the chemical empty sensor line must be attached and properly placed inside the appropri-
ate chemical container. Damaged chemical lines will spill chemicals on the machine and floor and create poor wash
results. Damaged or dirty chemical low-level lines will cause a false low level reading.
3. Every glasswasher requires chemical pump adjustment and titrating by a chemical vendor. Poor wash results will
occur if the chemicals are not in proper concentration (see the operation manual for proper concentration levels).
4. Glasswasher chemicals are highly caustic and will cause severe burns when they contact human skin. These same
caustic chemicals will also corrode stainless steel and destroy machine components. A glasswasher should be checked
regularly for chemical leaks and any leaks should be corrected immediately.
5. All of the chemical tubing on a glasswasher should be inspected regularly and replaced at least once per year. The
highly caustic chemicals cause the chemical tubing to get brittle, and since leaking chemicals destroy glasswasher
components, it is good preventative maintenance to replace chemical tubing often. The various tubing includes the
lower tubing assembly or main chemical feed line, the pump squeeze tube (especially susceptible to damage), and the
upper tubing assembly from the pump to the glasswasher tank.
6. A GT-24 or GT-30 glasswasher can use either Iodine or Chlorine for sanitizer. Iodine is often used in hard water
conditions, because it has a sheeting action the helps to prevent water spots. You cannot switch between these two dif-
ferent chemicals for sanitizing without re-adjusting the chemical pumps, because they require different concentration
levels.
7. Chemical vendors that deliver chemicals to your establishment are typically responsible for adjusting the chemical
levels in your glasswasher. They are also helpful for assisting you with chemical tubing inspection and replacement.
Nothing removes your responsibility for proper maintenance, but the chemical vendor will help.