FlushGun A
1. Connect hose to FlushGun A.
2. Insert FlushGun A into the top outlet side opening of the condenser (bottom outlet of the
evaporator) until it is against the back plate.
A. Tightening the compression nut clockwise until the tool cannot be removed. Open the
hand valve slowly.
B. Apply a minimum of 60 psig water pressure for ten full minutes or until all foreign particles
have been flushed.
Note: If 60 psig is not available, connect a separate pump to compensate.
FlushGun B
1. Loosen the compression nut and remove FlushGun A.
2. Change hose connection to FlushGun B.
3. Insert FlushGun B until it is at the back of the heat exchanger (Figure 3).
4. Repeat Steps A & B.
FlushGun B
1. Loosen the compression nut and pull the tool out 1 ¼”, measured at the back of the compression nut.
2. Repeat 1 ¼” increments until the entire heat exchanger has been cleaned. The 1 ¼” increments are marked on the FlushGun as 1, 2, 3, and 4.
3. Repeat Steps A & B.
FINAL CLEANING
1. Repeat each of the steps for every heat exchanger until the entire chiller has been flushed.
2. Once the chiller heat exchangers have been cleaned, take a standard garden hose sprayer and insert it into the inlet (condenser bottom/evaporator top) of
the heat exchangers and apply full water pressure until all the debris has been dispersed from the plates.
3. Remove CARTRIDGE FILTERS from headers and clean with soap and wire brush.
4. Rinse CARTRIDGE FILTERS thoroughly with clean water.
5. Remove scale from the headers with a wire brush and replace them. Attach VICTAULICS and reinstall CARTRIDGE FILTER.
6. Backflush the entire chiller with clean water to ensure particles do not break free and enter the heat exchangers.
NOTE: See MULTISTACK Maintenance Instructions for information on fouling characteristics.
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USING FLUSHGUN TO CLEAN INDIVIDUAL HEAT EXCHANGERS
FlushGun kits must be ordered separately and are available in different styles, depending on the heat exchanger model. To obtain the correct FlushGun kit, simply
provide MULTISTACK with the initial purchase order for your modular chiller. The correct kit will be sent to you.
FlushGun A, position mock up.
FlushGun B, position mock up.
Figure 3, Inserting FlushGun into heat exchanger.
NOTE:FlushGun kits must be purchased separately.
