Sub-Zero Mega Chill User Manual

26 27
Controller should be installed in a place
protected by vibration, water and
corrosive gases and where ambient
temperature does not exceed the values
specified in the technical data.
Probe : To give correct reading, the probe
must be installed in a place protected from
thermal influences, which may affect the
temperature to be controlled.
8. PRECAUTIONS & CARE
WARNING:
Improper wiring may cause irreparable
damage and personal injury. Kindly
ensure that wiring is done by qualified
personnel only.
CAUTION
WIRING : The probe and its
corresponding wires should never be
installed in a conduit next to control or
power supply lines. The electrical wiring
should be done as shown in the diagram.
The power supply circuit should be
connected to a protection switch. The
2
terminals admit wires of upto 2.5 mm .
Maintenance
Cleaning : Clean the surface of the
controller with a soft moist cloth. Do not
use abrasive detergents, petrol, alcohol
or solvents.
Notice : The information in this document is subject to change in order to improve reliability,
design or function without prior notice and does not represent a commitment on the part of
the company. In no event will the company be liable for direct, indirect, special, incidental or
consequential damage arising out of the use or inability to use the product or
documentation, even if advised of the possibility of such damages. No part of this manual
may be reproduced or transmitted in any form or by any means without the prior written
permission of the company.
Disclaimer : This manual & its contents remain the sole property of A.S.Controls Pvt.Ltd.,
India and shall not be reproduced or distributed without authorization. Although great care
has been taken in the preparations of this document, the company or its vendors in no event
will be liable for direct, indirect, special, incidental or consequential damage arising out of
the use or inability to use the product or documentation, even if advised of the possibility of
such damages. No part of this manual may be reproduced or transmitted in any form or by
any means without the prior written permission of the company. A.S.Controls Pvt.Ltd.
reserves the right to make and changes or improvements without prior notice.
Warranty : This product is warranted against defects in materials and workmanship for a
period of one year from the date of purchase. During the warranty period, product
determined by us to be defective in form or function will be repaired or, at our option,
replaced at no charge. This warranty does not apply if the product has been damaged by
accident, abuse, and misuse or as a result of service or modification other than by the
company. This warranty is in lieu of any other warranty expressed or implied. In no event
shall the company be held liable for incidental or consequential damages, such as lost
revenue or lost business opportunity arising from the purchase of this product.
1. Analog Inputs
a) Sensor type : Japanese NTC
thermistors.
0
b) Specification : 10K @ 25 C
0
c) Resolution : 0.5 C
0
d) Accuracy : +/- 1 C
Controlling Temp. Range
0 0
a) -30 C to + 50 C
2) Digital Inputs
(Potential Contacts)
a) Max continuous input
voltage : 230 Vac
b) Input current (closed
contract): 10 mA
3) Digital Output (Relay)
a) Type : SPDT
b) Contacts : C & NO
(C,No, NC for compressor)
c) Rating : 250 Vac, 5A(resi)
All digital outputs are fused
4) Operating Temperature
(User Interface & Relay Board)
0 0
A) -50 C to +50 C
(Non-condensing)
5) Storage Temperature
(User interface & Relay Board)
0 0
a) -20 C to + 70 C
(non-condensing)
6) Operating Humidity
Max 80% (non-condensing)
7) Storage Humidity
Max 80% (non-condensing)
8) Mounting
a) User interface :
Panel mounting
b) Relay Board :
Panel mounting
9) I.P. Standards
a) Probe - IP68
b) Mega Chill User Interface -
If buzzer hole is sealed, rating
is IP65 for front. Silicon
sealant should be applied
along the perimeter of the
panel cut out before the unit is
fitted to obtain IP65 grade.
c) I/O Board - Not Applicable
10) Min. Cable Section
(Screw terminal relay board)
2
0.5 mm
11) Max. Cable Section
(Screw terminal relay board)
2
2.5 mm
12) Fuse 1.5A
13) Transformer Torroidal type
Primary Input : 230Vac, 50Hz
Output :
Secondary 1: 9Vac, 350mA
Secondary 2: 10Vac, 500mA
7.TECHNICAL SPECIFICATIONS
2 COMPRESSOR2 COMPRESSOR
04 / 04.07.13

Sub-Zero Mega Chill Specifications

Operating Environment

operating temperature	-50 C to +50 C0
storage temperature	-20 C to + 70 C
operating humidity	Max 80% (non-condensing)
storage humidity	Max 80% (non-condensing)

Power

max continuous input voltage	230 Vac
input current (closed contact)	10 mA
transformer primary input	230Vac, 50Hz
transformer secondary output 1	9Vac, 350mA
transformer secondary output 2	10Vac, 500mA

Digital Output (Relay)

type	SPDT
contacts	C & NO (C, No, NC for compressor)
rating	250 Vac, 5A(resi)

Analog Inputs

sensor type	Japanese NTC thermistors
specification	10K @ 25 C0
resolution	0.5 C0
accuracy	+/- 1 C0