Haskris CWS Owner's manual

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Effective Date: 6 May 2022
Revision: 02
MODEL CWS & CGS

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Effective Date: 6 May 2022
Revision: 02
Table of Contents
I. Installation
Clearances......................................................................................................3
Mounting........................................................................................................3
Piping.............................................................................................................3
Electrical Power ..............................................................................................3
Filling the Unit ................................................................................................3
II. Startup
Phase Monitor (CGS only)................................................................................4
ON/OFF Switch ...............................................................................................5
Pump Priming (CGS only) ................................................................................6
III. Controller Display
Main Display ...................................................................................................7
Status Modes..................................................................................................7
Adjusting Temperature Set Point (CGS only).....................................................8
Mode Selection ...............................................................................................8
Adjusting Alarm Set Points...............................................................................9
Units of Measure...........................................................................................10
Faults...........................................................................................................11

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Effective Date: 6 May 2022
Revision: 02
I. Installation
Clearances
•A CWS must have unobstructed space above and below the unit for piping connections. 2’
(61cm) clearance on the front is required.
•A CGS must have unobstructed space above and clearance on the sides for piping and
electrical connections. 3’ (91cm) clearance on the front is required.
Mounting
•A CWS must be mounted on a wall. Use appropriate anchors to support the weight of the unit.
•A CGS must be mounted on the floor and secured to a wall. Use appropriate anchors to
prevent any risk of tipping over.
•Leveling legs are provided with the CGS. Adjust as necessary.
Piping
•Comply with local codes for proper piping.
•Use copper piping or reinforced EPDM hose and use non-ferrous materials.
•Insulate piping to minimize condensation.
•Ensure piping is clean and free of flux at solder joints.
•Connect piping to the unit according to the labels on the connections.
Electrical Power
•Contact a licensed electrician to perform the electrical installation.
•Refer to the nameplate label for electrical requirements.
•Use a dedicated service disconnect switch and circuit breaker or time delay fusing according to
the nameplate.
Filling the Unit
•With the unit switched off, run fluid from the main cooling source through the unit.

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Effective Date: 6 May 2022
Revision: 02
II. Startup
Phase Monitor (CGS only)
Purpose: Units configured for 3-phase electrical have a phase monitor to check incoming electrical
power.
Operation: The phase monitor is factory adjusted by Haskris according to the proper electrical
settings for the unit. Do not adjust the knobs on the phase monitor without discussion and approval
from Haskris.
The phase monitor will show a solid green LED if the voltage and phase from the service disconnect
is correct (Figure 1). If the phase monitor has a solid or flashing red LED, contact a licensed
electrician to correct the fault (Figure 2).
•Reversal is caused by the 3 lines being in an improper sequence. To correct a reversal, switch
any 2 of the 3 line connections. Make this switch at the disconnect, not in the unit.
•Loss/unbalance is caused by a percentage difference in voltage between the 3 lines relative to
each other.
•Undervoltage is caused by a percentage difference in voltage between the 3 lines compared to
the line-line voltage knob setting.
•Overvoltage is caused by the voltage between the 3 lines being >10% over the line-line
voltage knob setting.
Figure 1: Phase monitor
Figure 2: Phase fault LED status patterns

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Effective Date: 6 May 2022
Revision: 02
ON/OFF Switch
Location: A rotary ON/OFF switch is located on the front or side of the unit (Figure 3).
Operation: Rotate the switch to turn the unit ON or OFF. If a fault occurs, turning the switch to OFF
and then back ON will reset the fault.
Figure 3: ON/OFF switch, vertical position

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Effective Date: 6 May 2022
Revision: 02
Pump Priming (CGS only)
Purpose: All fluid is removed from the pump head prior to shipment from Haskris. When starting the
pump, it needs to be filled with fluid. This process is called priming the pump.
When the piping is full of fluid, the pump suction line is “flooded”. In some cases, this flooded suction
will automatically prime the pump. When the unit switches to city water backup, the pump will run. If
the controller display shows the pump generating pressure, then the pump is primed.
If the controller display shows a low pressure <10 psi, then the pump did not automatically prime.
Follow the procedure below.
1. Identify the priming plug on the face of the pump head (Figure 4).
2. Use a wrench or hex wrench to loosen the priming plug slightly. The plug should remain
threaded into the port, but air and liquid should be able to escape.
3. Allow air and a small amount of fluid to escape.
4. Tighten the priming plug.
Figure 4: Examples of priming plug, circled

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Effective Date: 6 May 2022
Revision: 02
III. Controller Display
Main Display
Status
Indicates the state of the unit
Supply Setpoint
Desired supply fluid temperature to the application when city
water backup is active (CGS only)
Supply Actual
Measured supply fluid temperature
Flow Rate
Fluid flow rate to the application (if applicable)
Status Modes
•OFF –This appears when the unit is off due to the ON/OFF switch. When OFF, the unit will not
switch over to city water backup.
•Startup –This appears for 60 seconds when the unit is switched ON or reset. During startup
the unit will not switch over to city water backup.
•Auto –AUTO mode is selected on the Mode Selection screen. In this mode, the unit will
automatically switch over to city water backup when the supply temperature rises to the high
temperature alarm set point, or when the flow rate falls to the low flow alarm set point or
below the activation threshold of the flow switch.
•FAILOVER –The unit has automatically switched to city water backup on a high temperature
or low flow condition.
•FORCE CWBS –Force CWBS mode is selected on the Mode Selection screen. In this mode, city
water backup is active.
•DISABLED –Disabled is selected in the Mode Selection screen. In this mode, city water backup
will not activate.
Status
Supply Setpoint (CGS only)
Supply Actual
Figure 5: Main display
Flow Rate (if applicable)

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Effective Date: 6 May 2022
Revision: 02
Adjusting Temperature Setpoint (CGS only)
Notes: Setpoint is the only adjustable value on the Main display (Figure 5). To change the setting,
follow the procedure below.
1. Press to move the blinking cursor to the value
2. Press or to adjust the value
3. Press to move the blinking cursor to the top left corner
Mode Selection
1. From the main screen, press to access the mode selection screen (figure 6).
2. Press to move the blinking cursor to Mode
3. Press or to change the mode
Figure 6: Mode selection

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Effective Date: 6 May 2022
Revision: 02
Adjusting Alarm Set Points
Purpose: When the CWS/CGS is in Auto mode, it will automatically switchover to city water backup
on high temperature and low flow. The high temperature alarm set point is the supply temperature
threshold at which switchover to city water backup is triggered. On units with a flow transducer, the
low flow alarm set point is the threshold at which switchover to city water backup is triggered.
1. Press on the controller
2. Press or to highlight Setpoints
3. Press to go into that menu section
4. To change an alarm set point value, press to move the blinking cursor to the value
5. Press or to adjust the value
6. Press to move the blinking cursor to the top left corner
7. With the blinking cursor in the top left corner, press or to navigate to additional alarm
set point screens (if applicable)

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Effective Date: 6 May 2022
Revision: 02
Units of Measure
Purpose: Several combinations of units of measure are available depending on what is most useful.
The following units of measure are available:
•CAN (°C, psi, GPM)
•UK (°C, bar, IGM)
•USA (°F, psi, GPM)
•SI (°C, bar, LPM)
To change the units of measure, follow procedure below.
1. Begin on the main display
2. Press on the controller
3. Press or to highlight Settings
4. Press to go into that menu section
5. Press or until you see Unit of Measure Zone
Figure 7: Units of measure screen
6. Press to move the blinking cursor around the screen
7. Press or to select different units of measure
8. Press several times to return to the main display