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06

4

Maintenance

Tighten the terminals of the button on a regular basis to make sure the 

wires are connected securely.

Tighten the fixing screws of the button on a regular basis. 

Disconnect  the  power  before  regular  maintenance  to  ensure  personal 

safety.

It is recommended to conduct maintenance once a month.

See Table 7 for Analysis and Troubleshooting of Faults.

Figure 4 Assembly diagram of 

metal head type base 

Figure 5 Disassembly diagram of 

plastic head type base

Table 7 Analysis and Troubleshooting of Faults

Symptons

Cause analysis

Troubleshooting method and precautions

The button 

cannot be 

operated 
smoothly

There are foreign objects 
like dust or greasy dirt 
on the button operation 
head or pushing rod of 
contact assembly.

Remove the foreign objects like dust or greasy 
dirt on the button operation head or pushing 
rod of contact assembly, make sure the 
environment is dry and clean after installing 
the panel. Use proper lubricant at the moving 
surface of the parts if necessary.

Check if the input voltage complies with the 
rated operating voltage; check if there is any 
short circuit or disconnection in the circuit. 

The input voltage does 
not comply with the rated 
operating voltage, or 
there is short circuit or 
disconnection in the circuit.

The light 
bead is not 
bright 
enough or is 
not on at all

Summary of Contents for NP2 Series

Page 1: ...NO 2020 04 Standard IEC EN 60947 5 1 NP2 Series Pushbutton User Instruction ...

Page 2: ...n and maintenance Installation in any damp condensed phase environment with inflammable and explosive gas is forbidden When the product is being installed or maintained the power must be switched off You are prohibited from touching the conductive part when the product is operating ...

Page 3: ...onditions Altitude Pollution class installation category Rated operating voltage Ue V Rated operating current Ie mA Rated insulation voltage Ui V Conventional thermal current Ith A Rated impulse withstand voltage Uimp kV Head protection class Rated operating voltage of button with indicator Ue V Technical parameters 5 40 average temperature should not exceed 35 within 24h Relative humidity should ...

Page 4: ...meter of the mounting hole for 0 4 Φ 22 panel mounting button is 22 3 0 mm the metal head is suitable for mounting panel with thickness of 1mm 6mm the plastic head is suitable for mounting panel with thickness of 1mm 4mm Type Flat type knob type handle type key type with indicator signal light Φ22 installation dimensions Φ22 installation dimensions Direction A Direction B Mushroom type self lockin...

Page 5: ...e size Installation dimensions Φ Φ20 Φ20 20 2 Φ4 3 center to center distance 54 2 Φ4 3 center to center distance 54 68 2 Φ4 3 center to center distance 54 98 2 See Figure 2 and Figure 3 and Table 4 and Table 5 for product overall dimensions D D A B C 25 C A B 25 Figure 2 NP2 BA Figure 3 NP2 EA Unit mm ...

Page 6: ... 33 33 33 33 27 27 27 27 27 19 27 19 12 12 19 19 19 19 15 15 14 17 14 17 30 30 40 40 40 40 31 31 31 31 31 31 31 31 30 30 30 30 30 30 30 30 30 30 30 30 40 42 40 42 40 42 41 41 41 41 41 41 41 41 42 42 40 42 40 42 55 55 40 42 40 42 Note For NP2 BG NP2 EG B the dimension outside the brackets is height with key the dimension inside the brackets is height without key Table 5 Overall dimensions of pushbu...

Page 7: ...t exceed 0 25N m If the button is jammed after installation adjust the two fixing screws on the base and make sure they have the same tightness Before installing plastic head type button remove the base first insert a screwdriver into the hole on the base and pry it up as shown in Figure 5 Tighten the nuts with a torque of 1 2N m 1 8N m For NP2 B NP2 J buttons with cases there are two Φ 21mm cable...

Page 8: ...g method and precautions The button cannot be operated smoothly There are foreign objects like dust or greasy dirt on the button operation head or pushing rod of contact assembly Remove the foreign objects like dust or greasy dirt on the button operation head or pushing rod of contact assembly make sure the environment is dry and clean after installing the panel Use proper lubricant at the moving ...

Page 9: ... EN 60947 5 1 Check 31 07 In order to protect the environment the product or product parts should be disposed of according to the industrial waste treatment process or be sent to the recycling station for assortment dismantling and recycling according to local regulations 5 Environmental Protection ...

Page 10: ...es Pushbutton User Instruction Zhejiang Chint Electrics Co Ltd Add No 1 CHINT Road CHINT Industrial Zone North Baixiang Yueqing Zhejiang 325603 P R China E mail global sales chint com Website http en chint com ...

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