HITROL HQ Series User manual

HQ-Series
HITROL CO., LTD. 1
HITROL CO., LTD.
HEAD OFFICE.FACTORY R & D INSTITUTE
HITROL CO., LTD. 141, Palhakgol-gil, Jori-eup
Paju-si, Gyeonggi-do, Korea
TEL.: [phone]
FAX: [phone]
www.hitrol.com
INSTRUCTION MANUAL
QUICK FLOAT TYPE LEVEL SWITCH
HQ Series
Doc. no. : HQ(HQM)_IM_Eng_Rev.2.2
Issue date: 2020. 09

HQ-Series
HITROL CO., LTD. 2
Table of Contents
Overview 3
Features 3
Mechanism 3
Mercury Switch 3
Micro Switch 3
Specifications 4
Components 5
Dimensions 6
Wiring 7
Components 7
Terminal Block 7
Operation Position Adjustment 7
Maintenance 7
Cautions for Installation 8
Cautions for Removal 9
Safety and Environment 9
Cautions for Use 9
Cautions for Wiring 9
Disposal 9
Label 9
User Training 10
Warranty and Contact 10

HQ-Series
HITROL CO., LTD. 3
Overview
Features
Mechanism
■ Its simple shape and structure ensures easy installation and long service life.
■ As it is a cable type, it enables usage in wastewater with floating matters or high-d
ensity liquid.
■ It has no exposed metal part, which makes it resistant to corrosion (except for the
SUS Float Type).
■ It is easy to adjust the operation switch locally.
The HQ-Series is a float-type level switch, which is solid and easy to use. It is designed
to control different liquid levels in boilers as well as water treatment and other
industrial facilities.
■ Mercury Switch
As the liquid level rises, the float also rises because of its buoyancy thus causing it to ti
lt. As such, the mercury inside the float flows to the terminal to connect it as a contact.
■ Micro Switch
As the liquid level rises, the float also rises because of its buoyancy thus causing it to ti
lt.
The metal ball inside presses the micro switch to make contact.
<Internal Structure of the Mercury S/W Float> <Internal Structure of the Micro S/W Float>
Mercury
Switch
Micro Switch
Metal
Ball
Cable
Packing
Float

HQ-Series
HITROL CO., LTD. 4
Specifications
Model HQ-36 HQ-66 HQ-66S HQM-77
Mounting Flange
Enclosure Weatherproof, IP54
Temperature Max. 60°C Max. 150°C Max. 60°C
Process Pressure ATM
Switch Type Mercury Switch Micro Switch
Contact Rating AC 110 V 1 A / DC 24 V 0.5 A AC 250 V 3 A
AC 250 V 5 A
Contact Form SPST SPST (Std.), SPDT SPDT
Head Material ABS (Std.), 304 SS 304 SS ABS (Std.), 304 SS
Cable Entry ABS: PF 1/2'' (F), CS, 304 SS: 20 A Cable Connector
Process Connection 80A JIS 10K FF 100A JIS 10K FF 100A JIS 10K RF 100A JIS 10K FF
Flange Material ABS (Std.), PVC 304 SS, 316L SS ABS (Std.), PVC
Float Material ABS 316L SS ABS
Cable Material NBR NBR (Std.), PUR Silicon NBR (Std.), PUR
Guide Wire Material Nylon 304 SS, 316L SS Nylon
Weight Material CS+ABS 304 SS CS+ABS
Weight Size
1, 2 F: Ø55 × 60 L
3,4F: Ø70 × 70 L
Ø76.3 × 80 L
1, 2 F: Ø55 × 60 L
3, 4 F: Ø70 × 70 L
Measuring Length 6 m (Std.)
Actuation Angle ±30˚
Application Water, wastewater
Water, wastewater
(Cable: NBR)
Oil, solvent
(Cable: PUR)
Boiler steam conden
sate
Hot wastewater
Water, wastewater
(Cable: NBR)
Oil, solvent
(Cable: PUR)
For ABS flange, the flow mark may appear in the injection process.

HQ-Series
HITROL CO., LTD. 5
Components
ABS Housing SUS Housing
Flange
ABS, PVC
Flange
ABS, PVC
Flange
304, 316 L
Float
ABS
Cable
NBR
Guide Wire
Nylon
Float
ABS
Cable
NBR, PUR
Guide Wire
Nylon
Guide Wire
304, 316 L
Cable
Silicon
Float
316 L
Weight
304
Weight
CS+ABS
Weight
CS+ABS
CS+ABS Weight (HQ-36, 66, HQM-77) SUS Weight (HQ-66S)
HQ-36 HQ-66, HQM-77 HQ-66S

HQ-Series
HITROL CO., LTD. 6
Dimensions
HQ-36
(ABS Housing)
HQ-66, HQM-77
(ABS Housing)
HQ-66S
(SUS Housing)
HQ-3 HQ-6, HQM-7 HQ-6 (SUS Type)

HQ-Series
HITROL CO., LTD. 7
■ Components
- Open the cover and insert the cable into the inlet.
- Find the contact cable (E1, E2 ...) that you want and connect it.
- Install an electrical spring connector and then use a tool to press it.
■ Terminal Block (Opt.)
- Open the cover and insert the cable into the inlet.
- Check the contact identification of the terminal block (E1, E2 …) and connect it.
Wiring
Operation Position
Adjustment
Maintenance
■ Take out the product from the container and open the cover.
■ Release the cable gland and then cut the cable tie. Try not to cause damage to th
e cable or guide wire while cutting the cable tie.
■ Adjust the cable as you want under the flange.
■ Tighten the cable gland to seal the container.
■ If the cable is too long, cut it appropriately and then connect it.
■ Tie the cable with a guide wire using a cable tie. Keep it at about 100 mm away fr
om the float or the float will not work.
The float and switches are important parts to be inspected for the HQ-Series. Their service
lives depend on the user environment and they can be optimized with regular inspection.
As such, users are advised to conduct regular inspection and maintenance at least every y
ear.
Conduct a visual inspection to find any damaged float or disconnected cable. If you find a
scale used to measure the subject, remove it to facilitate the floating motion. The switche
s can be checked using a digital multimeter as follows.
- Set the switch of digital multimeter to the buzzer. To check, connect it to a cable termi
nal.
- It is normal for the buzzer to make a sound when the float is tilted at 90˚ or more fro
m its vertical position.
- To check the contact with resistance, set the digital multimeter switch to Ω. Then, tilt th
e float to see if it is normal: if the digital multimeter indicates a 0Ω or a ∞ with the fl
oat on or off, respectively, it means that it is working fine.
For maintenance, make sure the power supply to the product has been cut off.
4-SPST/2-SPDT
※ 3-SPDT or higher is restricted for an 8P terminal block, so connect it to
contact A or B according to requirements.
Wiring Diagram ex)
2-SPDT C-1 A-1 B-1 C-2 A-2 B-2 (6P)
4-SPDT C-1 A-1 C-2 A-2 C-3 A-3 C-4 A-4 (8P)
Wire Color
C contact– Black / A Contact – White / B Contact– Red

HQ-Series
HITROL CO., LTD. 8
Installation
Cautions
If it is installed at the inlet where the measuring subj
ect flows into or where the subject is excessively shak
en, it may malfunction.
It is advisable to install it on a concret
e wall as shown in the picture.
Diameter “d” should be bigger than
those of the float and weight.
■ Use the same standard flange or screws.
■ Make sure washers are inserted between bolts and nuts to prevent loosening.
■ Make sure gaskets are inserted between flanges.
(Select the gaskets in consideration of the temperature of the content and the pressure of the
container.)
■ Make sure to install the product and the cover before supplying the power.
Make sure that it is not subject to any impact when moving it.

HQ-Series
HITROL CO., LTD. 9
Removal
Cautions
Safety and
Environment
Label
■ Make sure to check the presence and level of the subject in the container before re
moving it.
■ If the temperature is high, wear gloves to prevent burns.
■ Disconnect the power first.
■ Make sure that any O-ring or gasket is not damaged while opening or closing the
cover of the product.
■ Cautions for Use
- Make sure to connect the product and container using the required tools.
- Avoid causing large impacts to the product.
■ Cautions for Wiring
- Make sure to connect contacts with the correct terminals. (Refer to Wiring.)
■ Disposal
- Make sure to separate the terminal block and the main unit from the housing be
fore wasting it. Pay special attention to the mercury switch because it can influence
the environment.
■ Label
- The label is attached on top and side of the product housing. The label states th
e model, serial number, working temperature, working pressure, and output of the
product. The serial number is a unique manufacturing number.
<Nameplate for HQ-Series> <Sticker for HQ-Series>

HQ-Series
HITROL CO., LTD. 10
User Training
Warranty
and Contact
■ Warranty and Service
This product is subject to a two-year warranty upon shipment and free service
will be provided for any damage found under normal operating conditions. If tr
oubles that occur are not due to product failure, service charge will apply.
You can request A/S from our website or by contacting our headquarters.
■ Headquarters, Factory, and Research Center (Contacts)
Address: Hitrol, 141, Palhakgol-gil, Jori-eup, Paju-si, Gyeonggi-do, Republic of Korea
(Palhakgol-gil 98)
HITROL CO., LTD. 141, Palhakgol-gil, Jori-eup, Paju-si, Gyeonggi-do, Korea
TEL: [phone] (Headquarters and A/S)
FAX: [phone] (Headquarters and A/S)
Make sure that the temperature of the fluid does not exceed 60℃ for a norma
l container, or 150℃ for a high-temperature container. In addition, make sure t
hat the ambient temperature of the housing is kept at -20 – +60℃.