Quantech
198
Form QTC3-NM1
Issue date: 12/19/2023
Section 10: Maintenance
Necessary materials:
• 2-Part urethane mastic kit, part number:
013-04188-000).
• 1 x mixing dish.
• 3 x 3 ml droppers.
• Soft bristle paint brush.
The 2-part urethane mastic kit consists of component
A-urethane mastic (black component) and component
B-urethane mastic activator (clear component)
To touch-up the end tubes and condenser coil headers,
complete the following steps:
1. Thoroughly stir the can containing component A
(Urethane Mastic). It is important to stir the ure-
thane mastic thoroughly to ensure any settled pig-
ment is dispersed before application.
2. Gently shake the can containing component B, the
activator.
3. Mix the urethane mastic and activator in a 5:1 ra-
tio. Using one dropper, add 5 mm of component A
to the mixing dish.
4. Using the second (clean) dropper, add 1 ml of
component B to the mixing dish.
5. Mix the components well and allow the solution
in the dish to set for 30 min. Power mixing is pre-
ferred. If needed, make more amount of solution
for application.
6. Using the paint brush, apply the touch up paint to
the end tubes or coil headers as needed.
Table 36: Cleaning materials
Part number (p/n) Description
013-04185-000 Cleaner, coil, 4 gal- 1 gal
013-04185-001 Cleaner, coil, 1 gal
013-04186-000 Reducer, salt 4 gal - 1 gal
013-04186-001 Reducer, salt 1 gal
013-04187-000 Paint, touch-up 12 oz
013-04188-000 Mastic, 2-part urethane
Operating parameters
Perform regular checks on the system to ensure that
operating temperatures and pressures are within limi-
tations, and that the operating controls are set within
proper limits. See Section 8: Unit operation, Section 6:
Commissioning, and Section 4: Installation.
On-board battery backup
The Real Time Clock chip (U5) located on the 031-
02630 IPU II board that maintains the date/time and
stores customer programmed setpoints.
Do not confuse JP1 on the IPU II (031-
02630) board with JP1 on the I/O (031-
02550) board.
Thermal dispersion flow switch
Check the sensor tip for buildup regularly, because it
can affect the sensitivity of the sensor.
In case of any buildup at the sensor tip, use a soft cloth
to remove it. Use vinegar as the cleaning agent to re-
move any stubborn buildup if necessary.
Brazed plate heat exchanger
(evaporator) heater
The internal power supply to the Evapo-
rator Heater is 120 VAC. Disconnecting
120 VAC power from the unit, at or below
freezing temperatures, can result in dam-
age to the evaporator and unit as a result
of the chilled liquid freezing.
Overall unit inspection
In addition to the checks listed on this page, perform
periodic overall inspections on the unit to ensure prop-
er equipment operation. Investigate and correct imme-
diately items such as loose hardware, component op-
eration, refrigerant leaks, and unusual noises.
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